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Commit | Line | Data |
---|---|---|
b6360c3f DM |
1 | package PVE::Firewall; |
2 | ||
3 | use warnings; | |
4 | use strict; | |
585ede43 | 5 | |
09d5f68e | 6 | use Digest::SHA; |
0fd61594 TL |
7 | use Encode; |
8 | use File::Basename; | |
9 | use File::Path; | |
10 | use IO::File; | |
11 | use Net::IP; | |
12 | use POSIX; | |
06208a01 | 13 | use Socket qw(AF_INET AF_INET6 inet_ntop inet_pton); |
0fd61594 TL |
14 | use Storable qw(dclone); |
15 | ||
16 | use PVE::Cluster; | |
06208a01 | 17 | use PVE::Corosync; |
7ca36671 | 18 | use PVE::Exception qw(raise raise_param_exc); |
0fd61594 | 19 | use PVE::INotify; |
e74a87f5 | 20 | use PVE::JSONSchema qw(register_standard_option get_standard_option); |
2e1ae6b9 | 21 | use PVE::Network; |
0fd61594 | 22 | use PVE::ProcFSTools; |
eedcb564 | 23 | use PVE::SafeSyslog; |
0fd61594 | 24 | use PVE::Tools qw($IPV4RE $IPV6RE); |
1a301a8d | 25 | use PVE::Tools qw(run_command lock_file dir_glob_foreach); |
ecbea048 | 26 | |
21053409 DM |
27 | my $pvefw_conf_dir = "/etc/pve/firewall"; |
28 | my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw"; | |
fca39c2c | 29 | |
fdefeeab | 30 | # dynamically include PVE::QemuServer and PVE::LXC |
d9fee004 DM |
31 | # to avoid dependency problems |
32 | my $have_qemu_server; | |
33 | eval { | |
34 | require PVE::QemuServer; | |
b5a16dd3 | 35 | require PVE::QemuConfig; |
d9fee004 DM |
36 | $have_qemu_server = 1; |
37 | }; | |
38 | ||
3b4882dc AG |
39 | my $have_lxc; |
40 | eval { | |
41 | require PVE::LXC; | |
42 | $have_lxc = 1; | |
43 | }; | |
44 | ||
259db1e6 DM |
45 | my $pve_fw_status_dir = "/var/lib/pve-firewall"; |
46 | ||
47 | mkdir $pve_fw_status_dir; # make sure this exists | |
48 | ||
351052d1 DM |
49 | my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; |
50 | my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; | |
f9792937 | 51 | our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; |
351052d1 DM |
52 | |
53 | my $max_alias_name_length = 64; | |
54 | my $max_ipset_name_length = 64; | |
5c53cde4 | 55 | my $max_group_name_length = 18; |
351052d1 | 56 | |
48e3963e WB |
57 | my $PROTOCOLS_WITH_PORTS = { |
58 | udp => 1, 17 => 1, | |
59 | udplite => 1, 136 => 1, | |
60 | tcp => 1, 6 => 1, | |
61 | dccp => 1, 33 => 1, | |
62 | sctp => 1, 132 => 1, | |
63 | }; | |
64 | ||
ae029a88 DM |
65 | PVE::JSONSchema::register_format('IPorCIDR', \&pve_verify_ip_or_cidr); |
66 | sub pve_verify_ip_or_cidr { | |
009ee3ac DM |
67 | my ($cidr, $noerr) = @_; |
68 | ||
70e524eb | 69 | if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) { |
e34d0e58 | 70 | return $cidr if Net::IP->new($cidr); |
7c619bbb DM |
71 | return undef if $noerr; |
72 | die Net::IP::Error() . "\n"; | |
73 | } | |
74 | return undef if $noerr; | |
75 | die "value does not look like a valid IP address or CIDR network\n"; | |
76 | } | |
77 | ||
ae029a88 DM |
78 | PVE::JSONSchema::register_format('IPorCIDRorAlias', \&pve_verify_ip_or_cidr_or_alias); |
79 | sub pve_verify_ip_or_cidr_or_alias { | |
7c619bbb DM |
80 | my ($cidr, $noerr) = @_; |
81 | ||
82 | return if $cidr =~ m/^(?:$ip_alias_pattern)$/; | |
83 | ||
ae029a88 | 84 | return pve_verify_ip_or_cidr($cidr, $noerr); |
009ee3ac DM |
85 | } |
86 | ||
e74a87f5 DM |
87 | PVE::JSONSchema::register_standard_option('ipset-name', { |
88 | description => "IP set name.", | |
89 | type => 'string', | |
351052d1 | 90 | pattern => $ipset_name_pattern, |
387d0ffc | 91 | minLength => 2, |
351052d1 | 92 | maxLength => $max_ipset_name_length, |
387d0ffc DM |
93 | }); |
94 | ||
81d574a7 DM |
95 | PVE::JSONSchema::register_standard_option('pve-fw-alias', { |
96 | description => "Alias name.", | |
97 | type => 'string', | |
351052d1 | 98 | pattern => $ip_alias_pattern, |
81d574a7 | 99 | minLength => 2, |
351052d1 | 100 | maxLength => $max_alias_name_length, |
81d574a7 DM |
101 | }); |
102 | ||
6302c41f DM |
103 | PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => { |
104 | description => "Log level.", | |
e34d0e58 | 105 | type => 'string', |
6302c41f DM |
106 | enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'], |
107 | optional => 1, | |
108 | }); | |
109 | ||
387d0ffc DM |
110 | PVE::JSONSchema::register_standard_option('pve-security-group-name', { |
111 | description => "Security Group name.", | |
112 | type => 'string', | |
44be8ceb | 113 | pattern => $security_group_name_pattern, |
387d0ffc | 114 | minLength => 2, |
351052d1 | 115 | maxLength => $max_group_name_length, |
e74a87f5 | 116 | }); |
009ee3ac | 117 | |
cbb5d6f3 DM |
118 | my $feature_ipset_nomatch = 0; |
119 | eval { | |
120 | my (undef, undef, $release) = POSIX::uname(); | |
121 | if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) { | |
122 | my ($major, $minor) = ($1, $2); | |
123 | $feature_ipset_nomatch = 1 if ($major > 3) || | |
124 | ($major == 3 && $minor >= 7); | |
125 | } | |
126 | ||
127 | }; | |
128 | ||
c8301d63 | 129 | my $nodename = PVE::INotify::nodename(); |
c1f17287 | 130 | my $hostfw_conf_filename = "/etc/pve/nodes/$nodename/host.fw"; |
c8301d63 | 131 | |
06320eb0 DM |
132 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
133 | ||
56f313f7 | 134 | my $default_log_level = 'nolog'; # avoid logs by default |
cc37e000 TL |
135 | my $global_log_ratelimit = '--limit 1/sec'; |
136 | ||
2d404ffc DM |
137 | my $log_level_hash = { |
138 | debug => 7, | |
139 | info => 6, | |
140 | notice => 5, | |
141 | warning => 4, | |
142 | err => 3, | |
143 | crit => 2, | |
144 | alert => 1, | |
145 | emerg => 0, | |
146 | }; | |
147 | ||
40af93c4 TL |
148 | my $verbose = 0; |
149 | sub set_verbose { | |
150 | $verbose = shift; | |
151 | } | |
152 | ||
044409e5 TW |
153 | # %rule |
154 | # | |
155 | # name => optional | |
30c390f9 | 156 | # enable => [0|1] |
044409e5 TW |
157 | # action => |
158 | # proto => | |
30c390f9 TW |
159 | # sport => port[,port[,port]].. or port:port |
160 | # dport => port[,port[,port]].. or port:port | |
044409e5 TW |
161 | # log => optional, loglevel |
162 | # logmsg => optional, logmsg - overwrites default | |
30c390f9 TW |
163 | # iface_in => incomin interface |
164 | # iface_out => outgoing interface | |
044409e5 TW |
165 | # match => optional, overwrites generation of match |
166 | # target => optional, overwrites action | |
167 | ||
35d1d6da DM |
168 | # we need to overwrite some macros for ipv6 |
169 | my $pve_ipv6fw_macros = { | |
170 | 'Ping' => [ | |
171 | { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' }, | |
172 | ], | |
b3d75afb WB |
173 | 'NeighborDiscovery' => [ |
174 | "IPv6 neighbor solicitation, neighbor and router advertisement", | |
c71cdd44 | 175 | { action => 'PARAM', proto => 'icmpv6', dport => 'router-solicitation' }, |
b3d75afb WB |
176 | { action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' }, |
177 | { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' }, | |
178 | { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' }, | |
179 | ], | |
a42e9763 | 180 | 'DHCPv6' => [ |
24dd51c2 | 181 | "DHCPv6 traffic", |
a42e9763 WB |
182 | { action => 'PARAM', proto => 'udp', dport => '546:547', sport => '546:547' }, |
183 | ], | |
35d1d6da DM |
184 | 'Trcrt' => [ |
185 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, | |
186 | { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' }, | |
187 | ], | |
188 | }; | |
189 | ||
857f62c8 | 190 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 191 | my $pve_fw_macros = { |
857f62c8 | 192 | 'Amanda' => [ |
ebd54ae9 | 193 | "Amanda Backup", |
857f62c8 DM |
194 | { action => 'PARAM', proto => 'udp', dport => '10080' }, |
195 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
196 | ], | |
197 | 'Auth' => [ | |
ebd54ae9 | 198 | "Auth (identd) traffic", |
857f62c8 DM |
199 | { action => 'PARAM', proto => 'tcp', dport => '113' }, |
200 | ], | |
201 | 'BGP' => [ | |
ebd54ae9 | 202 | "Border Gateway Protocol traffic", |
857f62c8 DM |
203 | { action => 'PARAM', proto => 'tcp', dport => '179' }, |
204 | ], | |
205 | 'BitTorrent' => [ | |
ebd54ae9 | 206 | "BitTorrent traffic for BitTorrent 3.1 and earlier", |
961b4928 | 207 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
208 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
209 | ], | |
210 | 'BitTorrent32' => [ | |
ebd54ae9 | 211 | "BitTorrent traffic for BitTorrent 3.2 and later", |
857f62c8 DM |
212 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, |
213 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
214 | ], | |
06ba9c44 | 215 | 'Ceph' => [ |
e1bfce94 | 216 | "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Daemons)", |
a44539a3 | 217 | # Legacy port for protocol v1 |
06ba9c44 | 218 | { action => 'PARAM', proto => 'tcp', dport => '6789' }, |
a44539a3 CE |
219 | # New port for protocol v2 |
220 | { action => 'PARAM', proto => 'tcp', dport => '3300' }, | |
06ba9c44 AG |
221 | { action => 'PARAM', proto => 'tcp', dport => '6800:7300' }, |
222 | ], | |
857f62c8 | 223 | 'CVS' => [ |
ebd54ae9 | 224 | "Concurrent Versions System pserver traffic", |
857f62c8 DM |
225 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, |
226 | ], | |
227 | 'Citrix' => [ | |
ebd54ae9 | 228 | "Citrix/ICA traffic (ICA, ICA Browser, CGP)", |
857f62c8 DM |
229 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, |
230 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
231 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
232 | ], | |
233 | 'DAAP' => [ | |
ebd54ae9 | 234 | "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)", |
857f62c8 DM |
235 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, |
236 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
237 | ], | |
238 | 'DCC' => [ | |
ebd54ae9 | 239 | "Distributed Checksum Clearinghouse spam filtering mechanism", |
857f62c8 DM |
240 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, |
241 | ], | |
242 | 'DHCPfwd' => [ | |
d2c3266d | 243 | "Forwarded DHCP traffic", |
857f62c8 | 244 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, |
857f62c8 DM |
245 | ], |
246 | 'DNS' => [ | |
ebd54ae9 | 247 | "Domain Name System traffic (upd and tcp)", |
857f62c8 DM |
248 | { action => 'PARAM', proto => 'udp', dport => '53' }, |
249 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
250 | ], | |
251 | 'Distcc' => [ | |
ebd54ae9 | 252 | "Distributed Compiler service", |
857f62c8 DM |
253 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, |
254 | ], | |
857f62c8 | 255 | 'FTP' => [ |
ebd54ae9 | 256 | "File Transfer Protocol", |
857f62c8 DM |
257 | { action => 'PARAM', proto => 'tcp', dport => '21' }, |
258 | ], | |
259 | 'Finger' => [ | |
ebd54ae9 | 260 | "Finger protocol (RFC 742)", |
857f62c8 DM |
261 | { action => 'PARAM', proto => 'tcp', dport => '79' }, |
262 | ], | |
263 | 'GNUnet' => [ | |
ebd54ae9 | 264 | "GNUnet secure peer-to-peer networking traffic", |
857f62c8 DM |
265 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, |
266 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
267 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
268 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
269 | ], | |
270 | 'GRE' => [ | |
d2c3266d | 271 | "Generic Routing Encapsulation tunneling protocol", |
857f62c8 | 272 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
273 | ], |
274 | 'Git' => [ | |
ebd54ae9 | 275 | "Git distributed revision control traffic", |
857f62c8 DM |
276 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, |
277 | ], | |
857f62c8 | 278 | 'HKP' => [ |
e1bfce94 | 279 | "OpenPGP HTTP key server protocol traffic", |
857f62c8 DM |
280 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, |
281 | ], | |
282 | 'HTTP' => [ | |
ebd54ae9 | 283 | "Hypertext Transfer Protocol (WWW)", |
961b4928 DM |
284 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
285 | ], | |
857f62c8 | 286 | 'HTTPS' => [ |
ebd54ae9 | 287 | "Hypertext Transfer Protocol (WWW) over SSL", |
857f62c8 DM |
288 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
289 | ], | |
290 | 'ICPV2' => [ | |
ebd54ae9 | 291 | "Internet Cache Protocol V2 (Squid) traffic", |
857f62c8 DM |
292 | { action => 'PARAM', proto => 'udp', dport => '3130' }, |
293 | ], | |
294 | 'ICQ' => [ | |
ebd54ae9 | 295 | "AOL Instant Messenger traffic", |
857f62c8 DM |
296 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, |
297 | ], | |
298 | 'IMAP' => [ | |
ebd54ae9 | 299 | "Internet Message Access Protocol", |
857f62c8 DM |
300 | { action => 'PARAM', proto => 'tcp', dport => '143' }, |
301 | ], | |
302 | 'IMAPS' => [ | |
ebd54ae9 | 303 | "Internet Message Access Protocol over SSL", |
857f62c8 DM |
304 | { action => 'PARAM', proto => 'tcp', dport => '993' }, |
305 | ], | |
306 | 'IPIP' => [ | |
d2c3266d | 307 | "IPIP capsulation traffic", |
857f62c8 | 308 | { action => 'PARAM', proto => '94' }, |
857f62c8 | 309 | ], |
857f62c8 | 310 | 'IPsec' => [ |
d2c3266d | 311 | "IPsec traffic", |
857f62c8 DM |
312 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
313 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
314 | ], |
315 | 'IPsecah' => [ | |
d2c3266d | 316 | "IPsec authentication (AH) traffic", |
857f62c8 DM |
317 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
318 | { action => 'PARAM', proto => '51' }, | |
857f62c8 DM |
319 | ], |
320 | 'IPsecnat' => [ | |
d2c3266d | 321 | "IPsec traffic and Nat-Traversal", |
857f62c8 DM |
322 | { action => 'PARAM', proto => 'udp', dport => '500' }, |
323 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
324 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
325 | ], |
326 | 'IRC' => [ | |
ebd54ae9 | 327 | "Internet Relay Chat traffic", |
857f62c8 DM |
328 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, |
329 | ], | |
857f62c8 | 330 | 'Jetdirect' => [ |
ebd54ae9 | 331 | "HP Jetdirect printing", |
857f62c8 DM |
332 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, |
333 | ], | |
334 | 'L2TP' => [ | |
ebd54ae9 | 335 | "Layer 2 Tunneling Protocol traffic", |
857f62c8 | 336 | { action => 'PARAM', proto => 'udp', dport => '1701' }, |
857f62c8 DM |
337 | ], |
338 | 'LDAP' => [ | |
ebd54ae9 | 339 | "Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
340 | { action => 'PARAM', proto => 'tcp', dport => '389' }, |
341 | ], | |
342 | 'LDAPS' => [ | |
ebd54ae9 | 343 | "Secure Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
344 | { action => 'PARAM', proto => 'tcp', dport => '636' }, |
345 | ], | |
346 | 'MSNP' => [ | |
ebd54ae9 | 347 | "Microsoft Notification Protocol", |
857f62c8 DM |
348 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, |
349 | ], | |
350 | 'MSSQL' => [ | |
ebd54ae9 | 351 | "Microsoft SQL Server", |
857f62c8 DM |
352 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, |
353 | ], | |
354 | 'Mail' => [ | |
ebd54ae9 | 355 | "Mail traffic (SMTP, SMTPS, Submission)", |
857f62c8 DM |
356 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
357 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
358 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
359 | ], | |
7831e1e3 EK |
360 | 'MDNS' => [ |
361 | "Multicast DNS", | |
362 | { action => 'PARAM', proto => 'udp', dport => '5353' }, | |
363 | ], | |
857f62c8 | 364 | 'Munin' => [ |
ebd54ae9 | 365 | "Munin networked resource monitoring traffic", |
857f62c8 DM |
366 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, |
367 | ], | |
368 | 'MySQL' => [ | |
ebd54ae9 | 369 | "MySQL server", |
857f62c8 DM |
370 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, |
371 | ], | |
372 | 'NNTP' => [ | |
ebd54ae9 | 373 | "NNTP traffic (Usenet).", |
857f62c8 DM |
374 | { action => 'PARAM', proto => 'tcp', dport => '119' }, |
375 | ], | |
376 | 'NNTPS' => [ | |
ebd54ae9 | 377 | "Encrypted NNTP traffic (Usenet)", |
857f62c8 DM |
378 | { action => 'PARAM', proto => 'tcp', dport => '563' }, |
379 | ], | |
380 | 'NTP' => [ | |
ebd54ae9 | 381 | "Network Time Protocol (ntpd)", |
857f62c8 DM |
382 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
383 | ], | |
857f62c8 | 384 | 'OSPF' => [ |
ebd54ae9 | 385 | "OSPF multicast traffic", |
857f62c8 DM |
386 | { action => 'PARAM', proto => '89' }, |
387 | ], | |
388 | 'OpenVPN' => [ | |
ebd54ae9 | 389 | "OpenVPN traffic", |
857f62c8 DM |
390 | { action => 'PARAM', proto => 'udp', dport => '1194' }, |
391 | ], | |
392 | 'PCA' => [ | |
ebd54ae9 | 393 | "Symantec PCAnywere (tm)", |
857f62c8 DM |
394 | { action => 'PARAM', proto => 'udp', dport => '5632' }, |
395 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
396 | ], | |
870223fd CE |
397 | 'PMG' => [ |
398 | "Proxmox Mail Gateway web interface", | |
399 | { action => 'PARAM', proto => 'tcp', dport => '8006' }, | |
400 | ], | |
857f62c8 | 401 | 'POP3' => [ |
ebd54ae9 | 402 | "POP3 traffic", |
857f62c8 DM |
403 | { action => 'PARAM', proto => 'tcp', dport => '110' }, |
404 | ], | |
405 | 'POP3S' => [ | |
ebd54ae9 | 406 | "Encrypted POP3 traffic", |
857f62c8 DM |
407 | { action => 'PARAM', proto => 'tcp', dport => '995' }, |
408 | ], | |
409 | 'PPtP' => [ | |
ebd54ae9 | 410 | "Point-to-Point Tunneling Protocol", |
857f62c8 | 411 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
412 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, |
413 | ], | |
414 | 'Ping' => [ | |
ebd54ae9 | 415 | "ICMP echo request", |
269d4f13 | 416 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
417 | ], |
418 | 'PostgreSQL' => [ | |
ebd54ae9 | 419 | "PostgreSQL server", |
857f62c8 DM |
420 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, |
421 | ], | |
422 | 'Printer' => [ | |
ebd54ae9 | 423 | "Line Printer protocol printing", |
857f62c8 DM |
424 | { action => 'PARAM', proto => 'tcp', dport => '515' }, |
425 | ], | |
426 | 'RDP' => [ | |
ebd54ae9 | 427 | "Microsoft Remote Desktop Protocol traffic", |
857f62c8 DM |
428 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, |
429 | ], | |
d2c3266d | 430 | 'RIP' => [ |
ebd54ae9 | 431 | "Routing Information Protocol (bidirectional)", |
857f62c8 | 432 | { action => 'PARAM', proto => 'udp', dport => '520' }, |
857f62c8 DM |
433 | ], |
434 | 'RNDC' => [ | |
ebd54ae9 | 435 | "BIND remote management protocol", |
857f62c8 DM |
436 | { action => 'PARAM', proto => 'tcp', dport => '953' }, |
437 | ], | |
438 | 'Razor' => [ | |
ebd54ae9 | 439 | "Razor Antispam System", |
056f9211 | 440 | { action => 'PARAM', proto => 'tcp', dport => '2703' }, |
857f62c8 DM |
441 | ], |
442 | 'Rdate' => [ | |
ebd54ae9 | 443 | "Remote time retrieval (rdate)", |
857f62c8 DM |
444 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
445 | ], | |
446 | 'Rsync' => [ | |
ebd54ae9 | 447 | "Rsync server", |
857f62c8 DM |
448 | { action => 'PARAM', proto => 'tcp', dport => '873' }, |
449 | ], | |
450 | 'SANE' => [ | |
ebd54ae9 | 451 | "SANE network scanning", |
857f62c8 DM |
452 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, |
453 | ], | |
454 | 'SMB' => [ | |
ebd54ae9 | 455 | "Microsoft SMB traffic", |
857f62c8 DM |
456 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
457 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
458 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
459 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
460 | ], | |
857f62c8 | 461 | 'SMBswat' => [ |
ebd54ae9 | 462 | "Samba Web Administration Tool", |
857f62c8 DM |
463 | { action => 'PARAM', proto => 'tcp', dport => '901' }, |
464 | ], | |
465 | 'SMTP' => [ | |
ebd54ae9 | 466 | "Simple Mail Transfer Protocol", |
857f62c8 DM |
467 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
468 | ], | |
469 | 'SMTPS' => [ | |
ebd54ae9 | 470 | "Encrypted Simple Mail Transfer Protocol", |
857f62c8 DM |
471 | { action => 'PARAM', proto => 'tcp', dport => '465' }, |
472 | ], | |
473 | 'SNMP' => [ | |
ebd54ae9 | 474 | "Simple Network Management Protocol", |
857f62c8 DM |
475 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, |
476 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
477 | ], | |
478 | 'SPAMD' => [ | |
ebd54ae9 | 479 | "Spam Assassin SPAMD traffic", |
857f62c8 DM |
480 | { action => 'PARAM', proto => 'tcp', dport => '783' }, |
481 | ], | |
482 | 'SSH' => [ | |
ebd54ae9 | 483 | "Secure shell traffic", |
857f62c8 DM |
484 | { action => 'PARAM', proto => 'tcp', dport => '22' }, |
485 | ], | |
486 | 'SVN' => [ | |
ebd54ae9 | 487 | "Subversion server (svnserve)", |
857f62c8 DM |
488 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, |
489 | ], | |
490 | 'SixXS' => [ | |
ebd54ae9 | 491 | "SixXS IPv6 Deployment and Tunnel Broker", |
857f62c8 DM |
492 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, |
493 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
494 | { action => 'PARAM', proto => '41' }, | |
495 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
496 | ], | |
b3b7974f OB |
497 | 'SPICE' => [ |
498 | "SPICE display proxy traffic", | |
499 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, | |
500 | ], | |
857f62c8 | 501 | 'Squid' => [ |
ebd54ae9 | 502 | "Squid web proxy traffic", |
857f62c8 DM |
503 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, |
504 | ], | |
505 | 'Submission' => [ | |
ebd54ae9 | 506 | "Mail message submission traffic", |
857f62c8 DM |
507 | { action => 'PARAM', proto => 'tcp', dport => '587' }, |
508 | ], | |
509 | 'Syslog' => [ | |
ebd54ae9 | 510 | "Syslog protocol (RFC 5424) traffic", |
857f62c8 DM |
511 | { action => 'PARAM', proto => 'udp', dport => '514' }, |
512 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
513 | ], | |
514 | 'TFTP' => [ | |
ebd54ae9 | 515 | "Trivial File Transfer Protocol traffic", |
857f62c8 DM |
516 | { action => 'PARAM', proto => 'udp', dport => '69' }, |
517 | ], | |
518 | 'Telnet' => [ | |
ebd54ae9 | 519 | "Telnet traffic", |
857f62c8 DM |
520 | { action => 'PARAM', proto => 'tcp', dport => '23' }, |
521 | ], | |
522 | 'Telnets' => [ | |
ebd54ae9 | 523 | "Telnet over SSL", |
857f62c8 DM |
524 | { action => 'PARAM', proto => 'tcp', dport => '992' }, |
525 | ], | |
526 | 'Time' => [ | |
ebd54ae9 | 527 | "RFC 868 Time protocol", |
857f62c8 DM |
528 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
529 | ], | |
530 | 'Trcrt' => [ | |
ebd54ae9 | 531 | "Traceroute (for up to 30 hops) traffic", |
857f62c8 | 532 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, |
269d4f13 | 533 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
534 | ], |
535 | 'VNC' => [ | |
93be4333 DM |
536 | "VNC traffic for VNC display's 0 - 99", |
537 | { action => 'PARAM', proto => 'tcp', dport => '5900:5999' }, | |
857f62c8 DM |
538 | ], |
539 | 'VNCL' => [ | |
ebd54ae9 | 540 | "VNC traffic from Vncservers to Vncviewers in listen mode", |
857f62c8 DM |
541 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, |
542 | ], | |
543 | 'Web' => [ | |
ebd54ae9 | 544 | "WWW traffic (HTTP and HTTPS)", |
857f62c8 | 545 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
961b4928 DM |
546 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
547 | ], | |
857f62c8 | 548 | 'Webcache' => [ |
ebd54ae9 | 549 | "Web Cache/Proxy traffic (port 8080)", |
857f62c8 DM |
550 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, |
551 | ], | |
552 | 'Webmin' => [ | |
ebd54ae9 | 553 | "Webmin traffic", |
857f62c8 DM |
554 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, |
555 | ], | |
556 | 'Whois' => [ | |
ebd54ae9 | 557 | "Whois (nicname, RFC 3912) traffic", |
857f62c8 DM |
558 | { action => 'PARAM', proto => 'tcp', dport => '43' }, |
559 | ], | |
961b4928 DM |
560 | }; |
561 | ||
562 | my $pve_fw_parsed_macros; | |
ebd54ae9 | 563 | my $pve_fw_macro_descr; |
21a18e53 | 564 | my $pve_fw_macro_ipversion = {}; |
961b4928 | 565 | my $pve_fw_preferred_macro_names = {}; |
3a616aa0 | 566 | |
fe3d79b4 WB |
567 | my $FWACCEPTMARK_ON = "0x80000000/0x80000000"; |
568 | my $FWACCEPTMARK_OFF = "0x00000000/0x80000000"; | |
569 | ||
5547adf7 | 570 | my $pve_std_chains = {}; |
cfd7cd9c TW |
571 | my $pve_std_chains_conf = {}; |
572 | $pve_std_chains_conf->{4} = { | |
d8f2505e | 573 | 'PVEFW-SET-ACCEPT-MARK' => [ |
044409e5 | 574 | { target => "-j MARK --set-mark $FWACCEPTMARK_ON" }, |
d8f2505e | 575 | ], |
79929d9c DM |
576 | 'PVEFW-DropBroadcast' => [ |
577 | # same as shorewall 'Broadcast' | |
578 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
579 | # we can use this to reduce logging | |
580 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
581 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
582 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
cbb5d6f3 | 583 | { action => 'DROP', dest => '224.0.0.0/4' }, |
79929d9c DM |
584 | ], |
585 | 'PVEFW-reject' => [ | |
586 | # same as shorewall 'reject' | |
587 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
cbb5d6f3 | 588 | { action => 'DROP', source => '224.0.0.0/4' }, |
79929d9c | 589 | { action => 'DROP', proto => 'icmp' }, |
044409e5 TW |
590 | { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' }, |
591 | { match => '-p udp', target => '-j REJECT --reject-with icmp-port-unreachable' }, | |
592 | { match => '-p icmp', target => '-j REJECT --reject-with icmp-host-unreachable' }, | |
593 | { target => '-j REJECT --reject-with icmp-host-prohibited' }, | |
79929d9c DM |
594 | ], |
595 | 'PVEFW-Drop' => [ | |
cbb5d6f3 | 596 | # same as shorewall 'Drop', which is equal to DROP, |
79929d9c DM |
597 | # but REJECT/DROP some packages to reduce logging, |
598 | # and ACCEPT critical ICMP types | |
79929d9c DM |
599 | # we are not interested in BROADCAST/MULTICAST/ANYCAST |
600 | { action => 'PVEFW-DropBroadcast' }, | |
601 | # ACCEPT critical ICMP types | |
602 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
603 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
604 | # Drop packets with INVALID state | |
044409e5 | 605 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, |
79929d9c | 606 | # Drop Microsoft SMB noise |
e4882cff TW |
607 | { action => 'DROP', proto => 'udp', dport => '135,445' }, |
608 | { action => 'DROP', proto => 'udp', dport => '137:139' }, | |
79929d9c | 609 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, |
e4882cff | 610 | { action => 'DROP', proto => 'tcp', dport => '135,139,445' }, |
79929d9c DM |
611 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
612 | # Drop new/NotSyn traffic so that it doesn't get logged | |
044409e5 | 613 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, |
79929d9c DM |
614 | # Drop DNS replies |
615 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
616 | ], | |
617 | 'PVEFW-Reject' => [ | |
cbb5d6f3 | 618 | # same as shorewall 'Reject', which is equal to Reject, |
79929d9c DM |
619 | # but REJECT/DROP some packages to reduce logging, |
620 | # and ACCEPT critical ICMP types | |
79929d9c DM |
621 | # we are not interested in BROADCAST/MULTICAST/ANYCAST |
622 | { action => 'PVEFW-DropBroadcast' }, | |
623 | # ACCEPT critical ICMP types | |
624 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
625 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
626 | # Drop packets with INVALID state | |
044409e5 | 627 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, |
79929d9c | 628 | # Drop Microsoft SMB noise |
e4882cff | 629 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' }, |
79929d9c DM |
630 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, |
631 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
e4882cff | 632 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' }, |
79929d9c DM |
633 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
634 | # Drop new/NotSyn traffic so that it doesn't get logged | |
044409e5 | 635 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, |
79929d9c DM |
636 | # Drop DNS replies |
637 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
638 | ], | |
d86659ef DM |
639 | 'PVEFW-tcpflags' => [ |
640 | # same as shorewall tcpflags action. | |
e1bfce94 | 641 | # Packets arriving on this interface are checked for some illegal combinations of TCP flags |
044409e5 TW |
642 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' }, |
643 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' }, | |
644 | { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' }, | |
645 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' }, | |
646 | { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' }, | |
d86659ef | 647 | ], |
bee633ab DM |
648 | 'PVEFW-smurfs' => [ |
649 | # same as shorewall smurfs action | |
650 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
044409e5 TW |
651 | { match => '-s 0.0.0.0/32', target => '-j RETURN' }, # allow DHCP |
652 | { match => '-m addrtype --src-type BROADCAST', target => '-g PVEFW-smurflog' }, | |
653 | { match => '-s 224.0.0.0/4', target => '-g PVEFW-smurflog' }, | |
654 | ], | |
655 | 'PVEFW-smurflog' => [ | |
656 | { action => 'DROP', logmsg => 'DROP: ' }, | |
657 | ], | |
658 | 'PVEFW-logflags' => [ | |
659 | { action => 'DROP', logmsg => 'DROP: ' }, | |
bee633ab | 660 | ], |
d8f2505e DM |
661 | }; |
662 | ||
cfd7cd9c | 663 | $pve_std_chains_conf->{6} = { |
47a79ff2 | 664 | 'PVEFW-SET-ACCEPT-MARK' => [ |
044409e5 | 665 | { target => "-j MARK --set-mark $FWACCEPTMARK_ON" }, |
47a79ff2 AD |
666 | ], |
667 | 'PVEFW-DropBroadcast' => [ | |
044409e5 TW |
668 | # same as shorewall 'Broadcast' |
669 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
670 | # we can use this to reduce logging | |
671 | #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6 | |
649cd835 DM |
672 | # ipv6 addrtype does not work with kernel 2.6.32 |
673 | #{ action => 'DROP', dsttype => 'MULTICAST' }, | |
044409e5 TW |
674 | #{ action => 'DROP', dsttype => 'ANYCAST' }, |
675 | { action => 'DROP', dest => 'ff00::/8' }, | |
676 | #{ action => 'DROP', dest => '224.0.0.0/4' }, | |
47a79ff2 AD |
677 | ], |
678 | 'PVEFW-reject' => [ | |
649cd835 | 679 | { action => 'DROP', proto => 'icmpv6' }, |
044409e5 | 680 | { match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' }, |
58ca8ec0 AD |
681 | { match => '-p udp', target => '-j REJECT --reject-with icmp6-port-unreachable' }, |
682 | { target => '-j REJECT --reject-with icmp6-adm-prohibited' }, | |
47a79ff2 AD |
683 | ], |
684 | 'PVEFW-Drop' => [ | |
044409e5 TW |
685 | # same as shorewall 'Drop', which is equal to DROP, |
686 | # but REJECT/DROP some packages to reduce logging, | |
687 | # and ACCEPT critical ICMP types | |
649cd835 | 688 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' |
044409e5 TW |
689 | # we are not interested in BROADCAST/MULTICAST/ANYCAST |
690 | { action => 'PVEFW-DropBroadcast' }, | |
691 | # ACCEPT critical ICMP types | |
692 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' }, | |
693 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' }, | |
694 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' }, | |
695 | # Drop packets with INVALID state | |
696 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, | |
697 | # Drop Microsoft SMB noise | |
e4882cff | 698 | { action => 'DROP', proto => 'udp', dport => '135,445' }, |
649cd835 DM |
699 | { action => 'DROP', proto => 'udp', dport => '137:139'}, |
700 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
e4882cff | 701 | { action => 'DROP', proto => 'tcp', dport => '135,139,445' }, |
649cd835 | 702 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
044409e5 TW |
703 | # Drop new/NotSyn traffic so that it doesn't get logged |
704 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, | |
705 | # Drop DNS replies | |
649cd835 | 706 | { action => 'DROP', proto => 'udp', sport => 53 }, |
47a79ff2 AD |
707 | ], |
708 | 'PVEFW-Reject' => [ | |
044409e5 TW |
709 | # same as shorewall 'Reject', which is equal to Reject, |
710 | # but REJECT/DROP some packages to reduce logging, | |
711 | # and ACCEPT critical ICMP types | |
712 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
713 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
714 | { action => 'PVEFW-DropBroadcast' }, | |
715 | # ACCEPT critical ICMP types | |
716 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' }, | |
717 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' }, | |
718 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' }, | |
719 | # Drop packets with INVALID state | |
720 | { action => 'DROP', match => '-m conntrack --ctstate INVALID', }, | |
721 | # Drop Microsoft SMB noise | |
e4882cff TW |
722 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445' }, |
723 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139' }, | |
044409e5 | 724 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, |
e4882cff | 725 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445' }, |
044409e5 TW |
726 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP |
727 | # Drop new/NotSyn traffic so that it doesn't get logged | |
728 | { action => 'DROP', match => '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' }, | |
729 | # Drop DNS replies | |
730 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
47a79ff2 AD |
731 | ], |
732 | 'PVEFW-tcpflags' => [ | |
044409e5 | 733 | # same as shorewall tcpflags action. |
e1bfce94 | 734 | # Packets arriving on this interface are checked for some illegal combinations of TCP flags |
044409e5 TW |
735 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' }, |
736 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' }, | |
737 | { match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' }, | |
738 | { match => '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target => '-g PVEFW-logflags' }, | |
739 | { match => '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target => '-g PVEFW-logflags' }, | |
740 | ], | |
741 | 'PVEFW-logflags' => [ | |
742 | { action => 'DROP', logmsg => 'DROP: ' }, | |
47a79ff2 | 743 | ], |
47a79ff2 AD |
744 | }; |
745 | ||
4b586518 DM |
746 | # iptables -p icmp -h |
747 | my $icmp_type_names = { | |
748 | any => 1, | |
749 | 'echo-reply' => 1, | |
750 | 'destination-unreachable' => 1, | |
751 | 'network-unreachable' => 1, | |
752 | 'host-unreachable' => 1, | |
753 | 'protocol-unreachable' => 1, | |
754 | 'port-unreachable' => 1, | |
755 | 'fragmentation-needed' => 1, | |
756 | 'source-route-failed' => 1, | |
757 | 'network-unknown' => 1, | |
758 | 'host-unknown' => 1, | |
759 | 'network-prohibited' => 1, | |
760 | 'host-prohibited' => 1, | |
761 | 'TOS-network-unreachable' => 1, | |
762 | 'TOS-host-unreachable' => 1, | |
763 | 'communication-prohibited' => 1, | |
764 | 'host-precedence-violation' => 1, | |
765 | 'precedence-cutoff' => 1, | |
766 | 'source-quench' => 1, | |
767 | 'redirect' => 1, | |
768 | 'network-redirect' => 1, | |
769 | 'host-redirect' => 1, | |
770 | 'TOS-network-redirect' => 1, | |
771 | 'TOS-host-redirect' => 1, | |
772 | 'echo-request' => 1, | |
773 | 'router-advertisement' => 1, | |
774 | 'router-solicitation' => 1, | |
775 | 'time-exceeded' => 1, | |
776 | 'ttl-zero-during-transit' => 1, | |
777 | 'ttl-zero-during-reassembly' => 1, | |
778 | 'parameter-problem' => 1, | |
779 | 'ip-header-bad' => 1, | |
780 | 'required-option-missing' => 1, | |
781 | 'timestamp-request' => 1, | |
782 | 'timestamp-reply' => 1, | |
783 | 'address-mask-request' => 1, | |
784 | 'address-mask-reply' => 1, | |
785 | }; | |
786 | ||
041b9277 DM |
787 | # ip6tables -p icmpv6 -h |
788 | ||
789 | my $icmpv6_type_names = { | |
041b9277 DM |
790 | 'destination-unreachable' => 1, |
791 | 'no-route' => 1, | |
792 | 'communication-prohibited' => 1, | |
d676aa18 | 793 | 'beyond-scope' => 1, |
041b9277 DM |
794 | 'address-unreachable' => 1, |
795 | 'port-unreachable' => 1, | |
d676aa18 ML |
796 | 'failed-policy' => 1, |
797 | 'reject-route' => 1, | |
041b9277 DM |
798 | 'packet-too-big' => 1, |
799 | 'time-exceeded' => 1, | |
800 | 'ttl-zero-during-transit' => 1, | |
801 | 'ttl-zero-during-reassembly' => 1, | |
802 | 'parameter-problem' => 1, | |
803 | 'bad-header' => 1, | |
804 | 'unknown-header-type' => 1, | |
805 | 'unknown-option' => 1, | |
806 | 'echo-request' => 1, | |
807 | 'echo-reply' => 1, | |
808 | 'router-solicitation' => 1, | |
809 | 'router-advertisement' => 1, | |
593604cc | 810 | 'neighbor-solicitation' => 1, |
041b9277 | 811 | 'neighbour-solicitation' => 1, |
593604cc | 812 | 'neighbor-advertisement' => 1, |
041b9277 DM |
813 | 'neighbour-advertisement' => 1, |
814 | 'redirect' => 1, | |
815 | }; | |
816 | ||
0588bf2a TL |
817 | my $is_valid_icmp_type = sub { |
818 | my ($type, $valid_types) = @_; | |
819 | ||
820 | if ($type =~ m/^\d+$/) { | |
821 | # values for icmp-type range between 0 and 255 (8 bit field) | |
822 | die "invalid icmp-type '$type'\n" if $type > 255; | |
823 | } else { | |
824 | die "unknown icmp-type '$type'\n" if !defined($valid_types->{$type}); | |
825 | } | |
826 | }; | |
827 | ||
54cd19a8 | 828 | sub init_firewall_macros { |
6158271d | 829 | |
961b4928 | 830 | $pve_fw_parsed_macros = {}; |
9aab3127 | 831 | |
21a18e53 WB |
832 | my $parse = sub { |
833 | my ($k, $macro) = @_; | |
e5076eee | 834 | my $lc_name = lc($k); |
21a18e53 WB |
835 | $pve_fw_macro_ipversion->{$k} = 0; |
836 | while (!ref($macro->[0])) { | |
837 | my $desc = shift @$macro; | |
838 | if ($desc eq 'ipv4only') { | |
839 | $pve_fw_macro_ipversion->{$k} = 4; | |
840 | } elsif ($desc eq 'ipv6only') { | |
841 | $pve_fw_macro_ipversion->{$k} = 6; | |
842 | } else { | |
843 | $pve_fw_macro_descr->{$k} = $desc; | |
844 | } | |
ebd54ae9 | 845 | } |
e5076eee DM |
846 | $pve_fw_preferred_macro_names->{$lc_name} = $k; |
847 | $pve_fw_parsed_macros->{$k} = $macro; | |
21a18e53 WB |
848 | }; |
849 | ||
850 | foreach my $k (keys %$pve_fw_macros) { | |
851 | &$parse($k, $pve_fw_macros->{$k}); | |
852 | } | |
853 | ||
854 | foreach my $k (keys %$pve_ipv6fw_macros) { | |
855 | next if $pve_fw_parsed_macros->{$k}; | |
856 | &$parse($k, $pve_ipv6fw_macros->{$k}); | |
857 | $pve_fw_macro_ipversion->{$k} = 6; | |
961b4928 | 858 | } |
9aab3127 DM |
859 | } |
860 | ||
54cd19a8 DM |
861 | init_firewall_macros(); |
862 | ||
ebd54ae9 DM |
863 | sub get_macros { |
864 | return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros; | |
865 | } | |
866 | ||
fcba0beb DM |
867 | my $etc_services; |
868 | ||
869 | sub get_etc_services { | |
870 | ||
871 | return $etc_services if $etc_services; | |
872 | ||
873 | my $filename = "/etc/services"; | |
874 | ||
875 | my $fh = IO::File->new($filename, O_RDONLY); | |
876 | if (!$fh) { | |
877 | warn "unable to read '$filename' - $!\n"; | |
878 | return {}; | |
879 | } | |
880 | ||
881 | my $services = {}; | |
882 | ||
883 | while (my $line = <$fh>) { | |
884 | chomp ($line); | |
885 | next if $line =~m/^#/; | |
886 | next if ($line =~m/^\s*$/); | |
887 | ||
d50f24ea | 888 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp|sctp).*$!) { |
fcba0beb | 889 | $services->{byid}->{$2}->{name} = $1; |
35b66e9d | 890 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
891 | $services->{byid}->{$2}->{$3} = 1; |
892 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
893 | } | |
894 | } | |
895 | ||
896 | close($fh); | |
897 | ||
6158271d DM |
898 | $etc_services = $services; |
899 | ||
3a616aa0 | 900 | |
fcba0beb DM |
901 | return $etc_services; |
902 | } | |
903 | ||
58bc569d WB |
904 | sub parse_protocol_file { |
905 | my ($filename) = @_; | |
fcba0beb DM |
906 | |
907 | my $fh = IO::File->new($filename, O_RDONLY); | |
908 | if (!$fh) { | |
909 | warn "unable to read '$filename' - $!\n"; | |
910 | return {}; | |
911 | } | |
912 | ||
913 | my $protocols = {}; | |
914 | ||
915 | while (my $line = <$fh>) { | |
916 | chomp ($line); | |
917 | next if $line =~m/^#/; | |
918 | next if ($line =~m/^\s*$/); | |
919 | ||
d6dd6e96 | 920 | if ($line =~ m!^(\S+)\s+(\d+)(?:\s+.*)?$!) { |
fcba0beb DM |
921 | $protocols->{byid}->{$2}->{name} = $1; |
922 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
923 | } | |
924 | } | |
925 | ||
926 | close($fh); | |
927 | ||
58bc569d WB |
928 | return $protocols; |
929 | } | |
930 | ||
931 | my $etc_protocols; | |
932 | ||
933 | sub get_etc_protocols { | |
934 | return $etc_protocols if $etc_protocols; | |
935 | ||
936 | my $protocols = parse_protocol_file('/etc/protocols'); | |
937 | ||
041b9277 DM |
938 | # add special case for ICMP v6 |
939 | $protocols->{byid}->{icmpv6}->{name} = "icmpv6"; | |
940 | $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6}; | |
941 | ||
fcba0beb DM |
942 | $etc_protocols = $protocols; |
943 | ||
944 | return $etc_protocols; | |
945 | } | |
946 | ||
b452ea10 WB |
947 | my $etc_ethertypes; |
948 | ||
949 | sub get_etc_ethertypes { | |
950 | $etc_ethertypes = parse_protocol_file('/etc/ethertypes') | |
951 | if !$etc_ethertypes; | |
952 | return $etc_ethertypes; | |
953 | } | |
954 | ||
525778d7 | 955 | my $__local_network; |
93be4333 | 956 | |
525778d7 | 957 | sub local_network { |
ac633d30 | 958 | my ($new_value) = @_; |
93be4333 | 959 | |
525778d7 | 960 | $__local_network = $new_value if defined($new_value); |
ac633d30 | 961 | |
525778d7 | 962 | return $__local_network if defined($__local_network); |
93be4333 DM |
963 | |
964 | eval { | |
965 | my $nodename = PVE::INotify::nodename(); | |
966 | ||
967 | my $ip = PVE::Cluster::remote_node_ip($nodename); | |
968 | ||
969 | my $testip = Net::IP->new($ip); | |
bfc488f6 | 970 | |
5dc356af WB |
971 | my $isv6 = $testip->version == 6; |
972 | my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route() | |
973 | : PVE::ProcFSTools::read_proc_net_route(); | |
93be4333 | 974 | foreach my $entry (@$routes) { |
5dc356af WB |
975 | my $mask; |
976 | if ($isv6) { | |
977 | $mask = $entry->{prefix}; | |
15c80000 | 978 | next if !$mask; # skip the default route... |
5dc356af | 979 | } else { |
2e1ae6b9 | 980 | $mask = $PVE::Network::ipv4_mask_hash_localnet->{$entry->{mask}}; |
5dc356af WB |
981 | next if !defined($mask); |
982 | } | |
93be4333 DM |
983 | my $cidr = "$entry->{dest}/$mask"; |
984 | my $testnet = Net::IP->new($cidr); | |
15c80000 WB |
985 | my $overlap = $testnet->overlaps($testip); |
986 | if ($overlap == $Net::IP::IP_B_IN_A_OVERLAP || | |
987 | $overlap == $Net::IP::IP_IDENTICAL) | |
988 | { | |
525778d7 | 989 | $__local_network = $cidr; |
93be4333 DM |
990 | return; |
991 | } | |
992 | } | |
993 | }; | |
994 | warn $@ if $@; | |
995 | ||
525778d7 | 996 | return $__local_network; |
93be4333 DM |
997 | } |
998 | ||
6d959e3f | 999 | # ipset names are limited to 31 characters, |
75a12a9d TL |
1000 | # and we use '-v4' or '-v6' to indicate IP versions, |
1001 | # and we use '_swap' suffix for atomic update, | |
6d959e3f | 1002 | # for example PVEFW-${VMID}-${ipset_name}_swap |
30150dca | 1003 | |
88c26d5e | 1004 | my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap"); |
708ba714 DM |
1005 | |
1006 | sub compute_ipset_chain_name { | |
88c26d5e | 1007 | my ($vmid, $ipset_name, $ipversion) = @_; |
708ba714 DM |
1008 | |
1009 | $vmid = 0 if !defined($vmid); | |
1010 | ||
88c26d5e | 1011 | my $id = "$vmid-${ipset_name}-v$ipversion"; |
708ba714 | 1012 | |
88c26d5e | 1013 | if (length($id) > $max_iptables_ipset_name_length) { |
708ba714 DM |
1014 | $id = PVE::Tools::fnv31a_hex($id); |
1015 | } | |
1016 | ||
1017 | return "PVEFW-$id"; | |
1018 | } | |
1019 | ||
b692f42c DM |
1020 | sub compute_ipfilter_ipset_name { |
1021 | my ($iface) = @_; | |
1022 | ||
1023 | return "ipfilter-$iface"; | |
1024 | } | |
1025 | ||
ecbea048 DM |
1026 | sub parse_address_list { |
1027 | my ($str) = @_; | |
1028 | ||
e2c62733 DM |
1029 | if ($str =~ m/^(\+)(\S+)$/) { # ipset ref |
1030 | die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1); | |
1031 | return; | |
1032 | } | |
1033 | ||
1034 | if ($str =~ m/^${ip_alias_pattern}$/) { | |
1035 | die "alias name too long\n" if length($str) > $max_alias_name_length; | |
1036 | return; | |
1037 | } | |
d72beb8e | 1038 | |
3162af6b DM |
1039 | my $count = 0; |
1040 | my $iprange = 0; | |
a589b6ac | 1041 | my $ipversion; |
7697c041 | 1042 | |
55b47371 WB |
1043 | my @elements = split(/,/, $str); |
1044 | die "extraneous commas in list\n" if $str ne join(',', @elements); | |
1045 | foreach my $elem (@elements) { | |
3162af6b | 1046 | $count++; |
c344e509 DM |
1047 | my $ip = Net::IP->new($elem); |
1048 | if (!$ip) { | |
ecbea048 DM |
1049 | my $err = Net::IP::Error(); |
1050 | die "invalid IP address: $err\n"; | |
1051 | } | |
3162af6b | 1052 | $iprange = 1 if $elem =~ m/-/; |
a589b6ac | 1053 | |
c344e509 | 1054 | my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4; |
a589b6ac DM |
1055 | |
1056 | die "detected mixed ipv4/ipv6 addresses in address list '$str'\n" | |
006490cb | 1057 | if $ipversion && ($new_ipversion != $ipversion); |
a589b6ac DM |
1058 | |
1059 | $ipversion = $new_ipversion; | |
ecbea048 | 1060 | } |
e34d0e58 | 1061 | |
5163367b | 1062 | die "you can't use a range in a list\n" if $iprange && $count > 1; |
a589b6ac | 1063 | |
7697c041 | 1064 | return $ipversion; |
ecbea048 | 1065 | } |
dddd9413 | 1066 | |
fcba0beb | 1067 | sub parse_port_name_number_or_range { |
a1c04f71 | 1068 | my ($str, $dport) = @_; |
fcba0beb DM |
1069 | |
1070 | my $services = PVE::Firewall::get_etc_services(); | |
7ca36671 | 1071 | my $count = 0; |
041b7e8e DM |
1072 | my $icmp_port = 0; |
1073 | ||
55b47371 WB |
1074 | my @elements = split(/,/, $str); |
1075 | die "extraneous commas in list\n" if $str ne join(',', @elements); | |
1076 | foreach my $item (@elements) { | |
aced7e7d | 1077 | if ($item =~ m/^([0-9]+):([0-9]+)$/) { |
6a241ca7 | 1078 | $count += 2; |
7ca36671 DM |
1079 | my ($port1, $port2) = ($1, $2); |
1080 | die "invalid port '$port1'\n" if $port1 > 65535; | |
1081 | die "invalid port '$port2'\n" if $port2 > 65535; | |
12be0dfe | 1082 | die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2; |
aced7e7d | 1083 | } elsif ($item =~ m/^([0-9]+)$/) { |
6a241ca7 | 1084 | $count += 1; |
7ca36671 DM |
1085 | my $port = $1; |
1086 | die "invalid port '$port'\n" if $port > 65535; | |
1087 | } else { | |
a1c04f71 | 1088 | if ($dport && $icmp_type_names->{$item}) { |
041b7e8e | 1089 | $icmp_port = 1; |
a1c04f71 | 1090 | } elsif ($dport && $icmpv6_type_names->{$item}) { |
041b9277 | 1091 | $icmp_port = 1; |
041b7e8e | 1092 | } else { |
e34d0e58 | 1093 | die "invalid port '$item'\n" if !$services->{byname}->{$item}; |
041b7e8e | 1094 | } |
fcba0beb DM |
1095 | } |
1096 | } | |
1097 | ||
1978585a | 1098 | die "ICMP ports not allowed in port range\n" if $icmp_port && $count > 0; |
6a241ca7 WB |
1099 | |
1100 | # I really don't like to use the word number here, but it's the only thing | |
1101 | # that makes sense in a literal way. The range 1:100 counts as 2, not as | |
1102 | # one and not as 100... | |
1103 | die "too many entries in port list (> 15 numbers)\n" | |
1104 | if $count > 15; | |
041b7e8e | 1105 | |
f776d6de | 1106 | return (scalar(@elements) > 1); |
fcba0beb DM |
1107 | } |
1108 | ||
a1c04f71 WB |
1109 | PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec); |
1110 | sub pve_fw_verify_sport_spec { | |
1111 | my ($portstr) = @_; | |
1112 | ||
1113 | parse_port_name_number_or_range($portstr, 0); | |
1114 | ||
1115 | return $portstr; | |
1116 | } | |
1117 | ||
1118 | PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec); | |
1119 | sub pve_fw_verify_dport_spec { | |
54cd19a8 DM |
1120 | my ($portstr) = @_; |
1121 | ||
a1c04f71 | 1122 | parse_port_name_number_or_range($portstr, 1); |
54cd19a8 DM |
1123 | |
1124 | return $portstr; | |
1125 | } | |
1126 | ||
d31689ee DM |
1127 | PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec); |
1128 | sub pve_fw_verify_addr_spec { | |
54cd19a8 DM |
1129 | my ($list) = @_; |
1130 | ||
1131 | parse_address_list($list); | |
1132 | ||
1133 | return $list; | |
1134 | } | |
1135 | ||
1136 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
1137 | sub pve_fw_verify_protocol_spec { | |
1138 | my ($proto) = @_; | |
1139 | ||
1140 | my $protocols = get_etc_protocols(); | |
1141 | ||
1142 | die "unknown protocol '$proto'\n" if $proto && | |
1143 | !(defined($protocols->{byname}->{$proto}) || | |
1144 | defined($protocols->{byid}->{$proto})); | |
1145 | ||
1146 | return $proto; | |
1147 | } | |
1148 | ||
72194c7c ML |
1149 | PVE::JSONSchema::register_format('pve-fw-icmp-type-spec', \&pve_fw_verify_icmp_type_spec); |
1150 | sub pve_fw_verify_icmp_type_spec { | |
1151 | my ($icmp_type) = @_; | |
1152 | ||
1153 | if ($icmp_type_names->{$icmp_type} || $icmpv6_type_names->{$icmp_type}) { | |
1154 | return $icmp_type; | |
1155 | } | |
1156 | ||
1157 | die "invalid icmp-type value '$icmp_type'\n" if $icmp_type ne ''; | |
1158 | ||
1159 | return $icmp_type; | |
1160 | } | |
1161 | ||
54cd19a8 | 1162 | |
d1c53b3e | 1163 | # helper function for API |
d1c53b3e | 1164 | |
5d38d64f DM |
1165 | sub copy_opject_with_digest { |
1166 | my ($object) = @_; | |
1167 | ||
1168 | my $sha = Digest::SHA->new('sha1'); | |
1169 | ||
1170 | my $res = {}; | |
1171 | foreach my $k (sort keys %$object) { | |
1172 | my $v = $object->{$k}; | |
0365eb68 | 1173 | next if !defined($v); |
5d38d64f DM |
1174 | $res->{$k} = $v; |
1175 | $sha->add($k, ':', $v, "\n"); | |
1176 | } | |
1177 | ||
55e686c7 | 1178 | my $digest = $sha->hexdigest; |
5d38d64f DM |
1179 | |
1180 | $res->{digest} = $digest; | |
1181 | ||
1182 | return wantarray ? ($res, $digest) : $res; | |
1183 | } | |
1184 | ||
1185 | sub copy_list_with_digest { | |
1186 | my ($list) = @_; | |
1187 | ||
1188 | my $sha = Digest::SHA->new('sha1'); | |
1189 | ||
1190 | my $res = []; | |
1191 | foreach my $entry (@$list) { | |
1192 | my $data = {}; | |
1193 | foreach my $k (sort keys %$entry) { | |
1194 | my $v = $entry->{$k}; | |
0365eb68 | 1195 | next if !defined($v); |
5d38d64f | 1196 | $data->{$k} = $v; |
6d9246e7 | 1197 | # Note: digest ignores refs ($rule->{errors}) |
e83f0d00 DC |
1198 | # since Digest::SHA expects a series of bytes, |
1199 | # we have to encode the value here to prevent errors when | |
1200 | # using utf8 characters (eg. in comments) | |
1201 | $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ; | |
5d38d64f DM |
1202 | } |
1203 | push @$res, $data; | |
1204 | } | |
1205 | ||
55e686c7 | 1206 | my $digest = $sha->hexdigest; |
5d38d64f DM |
1207 | |
1208 | foreach my $entry (@$res) { | |
1209 | $entry->{digest} = $digest; | |
1210 | } | |
1211 | ||
1212 | return wantarray ? ($res, $digest) : $res; | |
1213 | } | |
1214 | ||
e313afe0 DM |
1215 | our $cluster_option_properties = { |
1216 | enable => { | |
1217 | description => "Enable or disable the firewall cluster wide.", | |
1218 | type => 'integer', | |
1219 | minimum => 0, | |
1220 | optional => 1, | |
1221 | }, | |
2549e7ef SI |
1222 | ebtables => { |
1223 | description => "Enable ebtables rules cluster wide.", | |
1224 | type => 'boolean', | |
1225 | default => 1, | |
1226 | optional => 1, | |
1227 | }, | |
e313afe0 DM |
1228 | policy_in => { |
1229 | description => "Input policy.", | |
1230 | type => 'string', | |
1231 | optional => 1, | |
1232 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1233 | }, | |
1234 | policy_out => { | |
1235 | description => "Output policy.", | |
1236 | type => 'string', | |
1237 | optional => 1, | |
1238 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1239 | }, | |
cc37e000 TL |
1240 | log_ratelimit => { |
1241 | description => "Log ratelimiting settings", | |
1242 | type => 'string', format => { | |
1243 | enable => { | |
1244 | default_key => 1, | |
1245 | description => 'Enable or disable log rate limiting', | |
1246 | type => 'boolean', | |
1247 | default => '1', | |
1248 | }, | |
1249 | rate => { | |
1250 | type => 'string', | |
1251 | description => 'Frequency with which the burst bucket gets refilled', | |
1252 | optional => 1, | |
1253 | pattern => '[1-9][0-9]*\/(second|minute|hour|day)', | |
1254 | format_description => 'rate', | |
1255 | default => '1/second', | |
1256 | }, | |
1257 | burst => { | |
1258 | type => 'integer', | |
1259 | minimum => 0, | |
1260 | optional => 1, | |
cf051802 | 1261 | description => 'Initial burst of packages which will always get logged before the rate is applied', |
cc37e000 TL |
1262 | default => 5, |
1263 | }, | |
1264 | }, | |
1265 | optional => 1, | |
1266 | }, | |
e313afe0 DM |
1267 | }; |
1268 | ||
1269 | our $host_option_properties = { | |
1270 | enable => { | |
1271 | description => "Enable host firewall rules.", | |
1272 | type => 'boolean', | |
1273 | optional => 1, | |
1274 | }, | |
1275 | log_level_in => get_standard_option('pve-fw-loglevel', { | |
1276 | description => "Log level for incoming traffic." }), | |
1277 | log_level_out => get_standard_option('pve-fw-loglevel', { | |
1278 | description => "Log level for outgoing traffic." }), | |
1279 | tcp_flags_log_level => get_standard_option('pve-fw-loglevel', { | |
1280 | description => "Log level for illegal tcp flags filter." }), | |
1281 | smurf_log_level => get_standard_option('pve-fw-loglevel', { | |
1282 | description => "Log level for SMURFS filter." }), | |
1283 | nosmurfs => { | |
1284 | description => "Enable SMURFS filter.", | |
1285 | type => 'boolean', | |
1286 | optional => 1, | |
1287 | }, | |
1288 | tcpflags => { | |
1289 | description => "Filter illegal combinations of TCP flags.", | |
1290 | type => 'boolean', | |
e1639957 | 1291 | default => 0, |
e313afe0 DM |
1292 | optional => 1, |
1293 | }, | |
1294 | nf_conntrack_max => { | |
1295 | description => "Maximum number of tracked connections.", | |
1296 | type => 'integer', | |
1297 | optional => 1, | |
b2ec31cc | 1298 | default => 262144, |
e313afe0 DM |
1299 | minimum => 32768, |
1300 | }, | |
1301 | nf_conntrack_tcp_timeout_established => { | |
1302 | description => "Conntrack established timeout.", | |
1303 | type => 'integer', | |
1304 | optional => 1, | |
e1639957 | 1305 | default => 432000, |
e313afe0 DM |
1306 | minimum => 7875, |
1307 | }, | |
ac5dd88e AD |
1308 | nf_conntrack_tcp_timeout_syn_recv => { |
1309 | description => "Conntrack syn recv timeout.", | |
1310 | type => 'integer', | |
1311 | optional => 1, | |
1312 | default => 60, | |
1313 | minimum => 30, | |
1314 | maximum => 60, | |
1315 | }, | |
e313afe0 | 1316 | ndp => { |
e1639957 | 1317 | description => "Enable NDP (Neighbor Discovery Protocol).", |
e313afe0 | 1318 | type => 'boolean', |
e1639957 | 1319 | default => 0, |
e313afe0 DM |
1320 | optional => 1, |
1321 | }, | |
27c49e25 CE |
1322 | nf_conntrack_allow_invalid => { |
1323 | description => "Allow invalid packets on connection tracking.", | |
1324 | type => 'boolean', | |
1325 | default => 0, | |
1326 | optional => 1, | |
1327 | }, | |
ac5dd88e AD |
1328 | protection_synflood => { |
1329 | description => "Enable synflood protection", | |
1330 | type => 'boolean', | |
1331 | default => 0, | |
1332 | optional => 1, | |
1333 | }, | |
1334 | protection_synflood_rate => { | |
1335 | description => "Synflood protection rate syn/sec by ip src.", | |
1336 | type => 'integer', | |
1337 | optional => 1, | |
1338 | default => 200, | |
1339 | }, | |
1340 | protection_synflood_burst => { | |
1341 | description => "Synflood protection rate burst by ip src.", | |
1342 | type => 'integer', | |
1343 | optional => 1, | |
1344 | default => 1000, | |
1345 | }, | |
e17d3eec ML |
1346 | log_nf_conntrack => { |
1347 | description => "Enable logging of conntrack information.", | |
1348 | type => 'boolean', | |
1349 | default => 0, | |
1350 | optional => 1 | |
1351 | }, | |
e313afe0 DM |
1352 | }; |
1353 | ||
1354 | our $vm_option_properties = { | |
1355 | enable => { | |
1356 | description => "Enable/disable firewall rules.", | |
1357 | type => 'boolean', | |
e1639957 | 1358 | default => 0, |
e313afe0 DM |
1359 | optional => 1, |
1360 | }, | |
1361 | macfilter => { | |
1362 | description => "Enable/disable MAC address filter.", | |
1363 | type => 'boolean', | |
2038e26b | 1364 | default => 1, |
e313afe0 DM |
1365 | optional => 1, |
1366 | }, | |
1367 | dhcp => { | |
1368 | description => "Enable DHCP.", | |
1369 | type => 'boolean', | |
e1639957 | 1370 | default => 0, |
e313afe0 DM |
1371 | optional => 1, |
1372 | }, | |
1373 | ndp => { | |
e1639957 | 1374 | description => "Enable NDP (Neighbor Discovery Protocol).", |
e313afe0 | 1375 | type => 'boolean', |
e1639957 | 1376 | default => 0, |
e313afe0 DM |
1377 | optional => 1, |
1378 | }, | |
1379 | radv => { | |
1380 | description => "Allow sending Router Advertisement.", | |
1381 | type => 'boolean', | |
1382 | optional => 1, | |
1383 | }, | |
1384 | ipfilter => { | |
1385 | description => "Enable default IP filters. " . | |
1386 | "This is equivalent to adding an empty ipfilter-net<id> ipset " . | |
1387 | "for every interface. Such ipsets implicitly contain sane default " . | |
1388 | "restrictions such as restricting IPv6 link local addresses to " . | |
1389 | "the one derived from the interface's MAC address. For containers " . | |
1390 | "the configured IP addresses will be implicitly added.", | |
1391 | type => 'boolean', | |
1392 | optional => 1, | |
1393 | }, | |
1394 | policy_in => { | |
1395 | description => "Input policy.", | |
1396 | type => 'string', | |
1397 | optional => 1, | |
1398 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1399 | }, | |
1400 | policy_out => { | |
1401 | description => "Output policy.", | |
1402 | type => 'string', | |
1403 | optional => 1, | |
1404 | enum => ['ACCEPT', 'REJECT', 'DROP'], | |
1405 | }, | |
1406 | log_level_in => get_standard_option('pve-fw-loglevel', { | |
1407 | description => "Log level for incoming traffic." }), | |
1408 | log_level_out => get_standard_option('pve-fw-loglevel', { | |
1409 | description => "Log level for outgoing traffic." }), | |
1410 | ||
1411 | }; | |
1412 | ||
fb060a52 | 1413 | |
7a332151 | 1414 | my $addr_list_descr = "This can refer to a single IP address, an IP set ('+ipsetname') or an IP alias definition. You can also specify an address range like '20.34.101.207-201.3.9.99', or a list of IP addresses and networks (entries are separated by comma). Please do not mix IPv4 and IPv6 addresses inside such lists."; |
fb060a52 | 1415 | |
7a332151 | 1416 | my $port_descr = "You can use service names or simple numbers (0-65535), as defined in '/etc/services'. Port ranges can be specified with '\\d+:\\d+', for example '80:85', and you can use comma separated list to match several ports or ranges."; |
fb060a52 | 1417 | |
9c7e0858 DM |
1418 | my $rule_properties = { |
1419 | pos => { | |
1420 | description => "Update rule at position <pos>.", | |
1421 | type => 'integer', | |
1422 | minimum => 0, | |
1423 | optional => 1, | |
1424 | }, | |
c71e785f | 1425 | digest => get_standard_option('pve-config-digest'), |
9c7e0858 | 1426 | type => { |
e50429af | 1427 | description => "Rule type.", |
9c7e0858 DM |
1428 | type => 'string', |
1429 | optional => 1, | |
1430 | enum => ['in', 'out', 'group'], | |
1431 | }, | |
1432 | action => { | |
c14dacdf | 1433 | description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.", |
9c7e0858 DM |
1434 | type => 'string', |
1435 | optional => 1, | |
44be8ceb | 1436 | pattern => $security_group_name_pattern, |
c14dacdf DM |
1437 | maxLength => 20, |
1438 | minLength => 2, | |
9c7e0858 | 1439 | }, |
e5076eee | 1440 | macro => { |
e50429af | 1441 | description => "Use predefined standard macro.", |
e5076eee DM |
1442 | type => 'string', |
1443 | optional => 1, | |
54cd19a8 | 1444 | maxLength => 128, |
e5076eee | 1445 | }, |
fb060a52 | 1446 | iface => get_standard_option('pve-iface', { |
7ccaa5f1 | 1447 | description => "Network interface name. You have to use network configuration key names for VMs and containers ('net\\d+'). Host related rules can use arbitrary strings.", |
fb060a52 DM |
1448 | optional => 1 |
1449 | }), | |
9c7e0858 | 1450 | source => { |
fb060a52 | 1451 | description => "Restrict packet source address. $addr_list_descr", |
d31689ee | 1452 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 | 1453 | optional => 1, |
12d3b75f | 1454 | maxLength => 512, |
9c7e0858 DM |
1455 | }, |
1456 | dest => { | |
fb060a52 | 1457 | description => "Restrict packet destination address. $addr_list_descr", |
d31689ee | 1458 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 | 1459 | optional => 1, |
12d3b75f | 1460 | maxLength => 512, |
9c7e0858 DM |
1461 | }, |
1462 | proto => { | |
fb060a52 | 1463 | description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.", |
54cd19a8 | 1464 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
1465 | optional => 1, |
1466 | }, | |
1467 | enable => { | |
e50429af | 1468 | description => "Flag to enable/disable a rule.", |
72d055fc AG |
1469 | type => 'integer', |
1470 | minimum => 0, | |
9c7e0858 DM |
1471 | optional => 1, |
1472 | }, | |
3489f8a2 CE |
1473 | log => get_standard_option('pve-fw-loglevel', { |
1474 | description => "Log level for firewall rule.", | |
1475 | }), | |
9c7e0858 | 1476 | sport => { |
fb060a52 | 1477 | description => "Restrict TCP/UDP source port. $port_descr", |
a1c04f71 | 1478 | type => 'string', format => 'pve-fw-sport-spec', |
9c7e0858 DM |
1479 | optional => 1, |
1480 | }, | |
1481 | dport => { | |
fb060a52 | 1482 | description => "Restrict TCP/UDP destination port. $port_descr", |
a1c04f71 | 1483 | type => 'string', format => 'pve-fw-dport-spec', |
9c7e0858 DM |
1484 | optional => 1, |
1485 | }, | |
1486 | comment => { | |
e50429af | 1487 | description => "Descriptive comment.", |
9c7e0858 DM |
1488 | type => 'string', |
1489 | optional => 1, | |
1490 | }, | |
72194c7c ML |
1491 | 'icmp-type' => { |
1492 | description => "Specify icmp-type. Only valid if proto equals 'icmp'.", | |
1493 | type => 'string', format => 'pve-fw-icmp-type-spec', | |
1494 | optional => 1, | |
1495 | }, | |
9c7e0858 DM |
1496 | }; |
1497 | ||
1498 | sub add_rule_properties { | |
1499 | my ($properties) = @_; | |
1500 | ||
1501 | foreach my $k (keys %$rule_properties) { | |
3655b01f DM |
1502 | my $h = $rule_properties->{$k}; |
1503 | # copy data, so that we can modify later without side effects | |
1504 | foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; } | |
9c7e0858 | 1505 | } |
cbb5d6f3 | 1506 | |
9c7e0858 DM |
1507 | return $properties; |
1508 | } | |
1509 | ||
5b7974df DM |
1510 | sub delete_rule_properties { |
1511 | my ($rule, $delete_str) = @_; | |
e34d0e58 | 1512 | |
5b7974df DM |
1513 | foreach my $opt (PVE::Tools::split_list($delete_str)) { |
1514 | raise_param_exc({ 'delete' => "no such property ('$opt')"}) | |
1515 | if !defined($rule_properties->{$opt}); | |
1516 | raise_param_exc({ 'delete' => "unable to delete required property '$opt'"}) | |
1517 | if $opt eq 'type' || $opt eq 'action'; | |
1518 | delete $rule->{$opt}; | |
1519 | } | |
1520 | ||
1521 | return $rule; | |
1522 | } | |
1523 | ||
9a2745a0 | 1524 | my $apply_macro = sub { |
35d1d6da | 1525 | my ($macro_name, $param, $verify, $ipversion) = @_; |
9a2745a0 DM |
1526 | |
1527 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
1528 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
1529 | ||
35d1d6da DM |
1530 | if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) { |
1531 | $macro_rules = $pve_ipv6fw_macros->{$macro_name}; | |
1532 | } | |
1533 | ||
21a18e53 | 1534 | # skip macros which are specific to another ipversion |
ff5d050e AG |
1535 | if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) { |
1536 | return if $ipversion != $required; | |
1537 | } | |
21a18e53 | 1538 | |
9a2745a0 DM |
1539 | my $rules = []; |
1540 | ||
1541 | foreach my $templ (@$macro_rules) { | |
1542 | my $rule = {}; | |
1543 | my $param_used = {}; | |
1544 | foreach my $k (keys %$templ) { | |
1545 | my $v = $templ->{$k}; | |
1546 | if ($v eq 'PARAM') { | |
1547 | $v = $param->{$k}; | |
1548 | $param_used->{$k} = 1; | |
1549 | } elsif ($v eq 'DEST') { | |
1550 | $v = $param->{dest}; | |
1551 | $param_used->{dest} = 1; | |
1552 | } elsif ($v eq 'SOURCE') { | |
1553 | $v = $param->{source}; | |
1554 | $param_used->{source} = 1; | |
1555 | } | |
1556 | ||
1557 | if (!defined($v)) { | |
1558 | my $msg = "missing parameter '$k' in macro '$macro_name'"; | |
e34d0e58 | 1559 | raise_param_exc({ macro => $msg }) if $verify; |
9a2745a0 DM |
1560 | die "$msg\n"; |
1561 | } | |
1562 | $rule->{$k} = $v; | |
1563 | } | |
1564 | foreach my $k (keys %$param) { | |
1565 | next if $k eq 'macro'; | |
1566 | next if !defined($param->{$k}); | |
1567 | next if $param_used->{$k}; | |
1568 | if (defined($rule->{$k})) { | |
1569 | if ($rule->{$k} ne $param->{$k}) { | |
1570 | my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')"; | |
e34d0e58 | 1571 | raise_param_exc({ $k => $msg }) if $verify; |
9a2745a0 DM |
1572 | die "$msg\n"; |
1573 | } | |
1574 | } else { | |
1575 | $rule->{$k} = $param->{$k}; | |
1576 | } | |
1577 | } | |
1578 | push @$rules, $rule; | |
1579 | } | |
1580 | ||
1581 | return $rules; | |
1582 | }; | |
1583 | ||
b6b8e6ad DM |
1584 | my $rule_env_iface_lookup = { |
1585 | 'ct' => 1, | |
1586 | 'vm' => 1, | |
1587 | 'group' => 0, | |
1588 | 'cluster' => 1, | |
1589 | 'host' => 1, | |
1590 | }; | |
1591 | ||
7ca36671 | 1592 | sub verify_rule { |
a523e057 | 1593 | my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_; |
b6b8e6ad DM |
1594 | |
1595 | my $allow_groups = $rule_env eq 'group' ? 0 : 1; | |
bfc488f6 | 1596 | |
b6b8e6ad DM |
1597 | my $allow_iface = $rule_env_iface_lookup->{$rule_env}; |
1598 | die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen | |
7ca36671 | 1599 | |
a523e057 DM |
1600 | my $errors = $rule->{errors} || {}; |
1601 | ||
6d9246e7 | 1602 | my $error_count = 0; |
7ca36671 | 1603 | |
6d9246e7 DM |
1604 | my $add_error = sub { |
1605 | my ($param, $msg) = @_; | |
d4cda423 | 1606 | chomp $msg; |
6d9246e7 DM |
1607 | raise_param_exc({ $param => $msg }) if !$noerr; |
1608 | $error_count++; | |
1609 | $errors->{$param} = $msg if !$errors->{$param}; | |
1610 | }; | |
1611 | ||
eea9d2a1 DM |
1612 | my $ipversion; |
1613 | my $set_ip_version = sub { | |
1614 | my $vers = shift; | |
1615 | if ($vers) { | |
e1bfce94 | 1616 | die "detected mixed ipv4/ipv6 addresses in rule\n" |
eea9d2a1 DM |
1617 | if $ipversion && ($vers != $ipversion); |
1618 | $ipversion = $vers; | |
1619 | } | |
1620 | }; | |
1621 | ||
a523e057 | 1622 | my $check_ipset_or_alias_property = sub { |
ae029a88 | 1623 | my ($name, $expected_ipversion) = @_; |
a523e057 DM |
1624 | |
1625 | if (my $value = $rule->{$name}) { | |
1626 | if ($value =~ m/^\+/) { | |
4dfe04e6 | 1627 | if ($value =~ m/^\+(${ipset_name_pattern})$/) { |
bfc488f6 | 1628 | &$add_error($name, "no such ipset '$1'") |
a523e057 | 1629 | if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1})); |
bfc488f6 | 1630 | |
a523e057 | 1631 | } else { |
351052d1 | 1632 | &$add_error($name, "invalid ipset name '$value'"); |
a523e057 DM |
1633 | } |
1634 | } elsif ($value =~ m/^${ip_alias_pattern}$/){ | |
1635 | my $alias = lc($value); | |
bfc488f6 | 1636 | &$add_error($name, "no such alias '$value'") |
70e524eb | 1637 | if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias})); |
04f5088f | 1638 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
70e524eb AD |
1639 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; |
1640 | ||
eea9d2a1 | 1641 | &$set_ip_version($e->{ipversion}); |
a523e057 DM |
1642 | } |
1643 | } | |
1644 | }; | |
1645 | ||
6d9246e7 DM |
1646 | my $type = $rule->{type}; |
1647 | my $action = $rule->{action}; | |
bfc488f6 | 1648 | |
6d9246e7 DM |
1649 | &$add_error('type', "missing property") if !$type; |
1650 | &$add_error('action', "missing property") if !$action; | |
1651 | ||
1652 | if ($type) { | |
1653 | if ($type eq 'in' || $type eq 'out') { | |
1654 | &$add_error('action', "unknown action '$action'") | |
1655 | if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/); | |
1656 | } elsif ($type eq 'group') { | |
1657 | &$add_error('type', "security groups not allowed") | |
1658 | if !$allow_groups; | |
1659 | &$add_error('action', "invalid characters in security group name") | |
1660 | if $action && ($action !~ m/^${security_group_name_pattern}$/); | |
1661 | } else { | |
1662 | &$add_error('type', "unknown rule type '$type'"); | |
1663 | } | |
7ca36671 | 1664 | } |
e34d0e58 | 1665 | |
dba740a9 | 1666 | if ($rule->{iface}) { |
bfc488f6 | 1667 | &$add_error('type', "parameter -i not allowed for this rule type") |
b6b8e6ad | 1668 | if !$allow_iface; |
dba740a9 | 1669 | eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); }; |
6d9246e7 | 1670 | &$add_error('iface', $@) if $@; |
fdefeeab | 1671 | if ($rule_env eq 'vm' || $rule_env eq 'ct') { |
b6b8e6ad DM |
1672 | &$add_error('iface', "value does not match the regex pattern 'net\\d+'") |
1673 | if $rule->{iface} !~ m/^net(\d+)$/; | |
b6b8e6ad DM |
1674 | } |
1675 | } | |
7ca36671 DM |
1676 | |
1677 | if ($rule->{macro}) { | |
6d9246e7 DM |
1678 | if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) { |
1679 | $rule->{macro} = $preferred_name; | |
1680 | } else { | |
1681 | &$add_error('macro', "unknown macro '$rule->{macro}'"); | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | if ($rule->{proto}) { | |
1686 | eval { pve_fw_verify_protocol_spec($rule->{proto}); }; | |
1687 | &$add_error('proto', $@) if $@; | |
041b9277 | 1688 | &$set_ip_version(4) if $rule->{proto} eq 'icmp'; |
72194c7c ML |
1689 | &$set_ip_version(6) if $rule->{proto} eq 'icmpv6'; |
1690 | &$set_ip_version(6) if $rule->{proto} eq 'ipv6-icmp'; | |
6d9246e7 | 1691 | } |
7ca36671 DM |
1692 | |
1693 | if ($rule->{dport}) { | |
a1c04f71 | 1694 | eval { parse_port_name_number_or_range($rule->{dport}, 1); }; |
6d9246e7 | 1695 | &$add_error('dport', $@) if $@; |
48e3963e | 1696 | my $proto = $rule->{proto}; |
6d9246e7 | 1697 | &$add_error('proto', "missing property - 'dport' requires this property") |
48e3963e WB |
1698 | if !$proto; |
1699 | &$add_error('dport', "protocol '$proto' does not support ports") | |
1700 | if !$PROTOCOLS_WITH_PORTS->{$proto} && | |
1701 | $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases | |
6d9246e7 | 1702 | } |
7ca36671 | 1703 | |
72194c7c ML |
1704 | if (my $icmp_type = $rule ->{'icmp-type'}) { |
1705 | my $proto = $rule->{proto}; | |
1706 | &$add_error('proto', "missing property - 'icmp-type' requires this property") | |
1707 | if $proto ne 'icmp' && $proto ne 'icmpv6' && $proto ne 'ipv6-icmp'; | |
1708 | &$add_error('icmp-type', "'icmp-type' cannot be specified together with 'dport'") | |
1709 | if $rule->{dport}; | |
1710 | if ($proto eq 'icmp' && !$icmp_type_names->{$icmp_type}) { | |
1711 | &$add_error('icmp-type', "invalid icmp-type '$icmp_type' for proto 'icmp'"); | |
1712 | } elsif (($proto eq 'icmpv6' || $proto eq 'ipv6-icmp') && !$icmpv6_type_names->{$icmp_type}) { | |
1713 | &$add_error('icmp-type', "invalid icmp-type '$icmp_type' for proto '$proto'"); | |
1714 | } | |
1715 | } | |
1716 | ||
7ca36671 | 1717 | if ($rule->{sport}) { |
a1c04f71 | 1718 | eval { parse_port_name_number_or_range($rule->{sport}, 0); }; |
6d9246e7 | 1719 | &$add_error('sport', $@) if $@; |
48e3963e | 1720 | my $proto = $rule->{proto}; |
6d9246e7 | 1721 | &$add_error('proto', "missing property - 'sport' requires this property") |
48e3963e WB |
1722 | if !$proto; |
1723 | &$add_error('sport', "protocol '$proto' does not support ports") | |
1724 | if !$PROTOCOLS_WITH_PORTS->{$proto}; | |
7ca36671 DM |
1725 | } |
1726 | ||
1727 | if ($rule->{source}) { | |
75a12a9d | 1728 | eval { |
041b9277 DM |
1729 | my $source_ipversion = parse_address_list($rule->{source}); |
1730 | &$set_ip_version($source_ipversion); | |
1731 | }; | |
6d9246e7 | 1732 | &$add_error('source', $@) if $@; |
ae029a88 | 1733 | &$check_ipset_or_alias_property('source', $ipversion); |
7ca36671 DM |
1734 | } |
1735 | ||
1736 | if ($rule->{dest}) { | |
75a12a9d TL |
1737 | eval { |
1738 | my $dest_ipversion = parse_address_list($rule->{dest}); | |
041b9277 | 1739 | &$set_ip_version($dest_ipversion); |
9e2205e5 | 1740 | }; |
6d9246e7 | 1741 | &$add_error('dest', $@) if $@; |
ae029a88 | 1742 | &$check_ipset_or_alias_property('dest', $ipversion); |
7ca36671 DM |
1743 | } |
1744 | ||
35d1d6da DM |
1745 | $rule->{ipversion} = $ipversion if $ipversion; |
1746 | ||
a523e057 | 1747 | if ($rule->{macro} && !$error_count) { |
35d1d6da | 1748 | eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); }; |
6d9246e7 DM |
1749 | if (my $err = $@) { |
1750 | if (ref($err) eq "PVE::Exception" && $err->{errors}) { | |
1751 | my $eh = $err->{errors}; | |
1752 | foreach my $p (keys %$eh) { | |
1753 | &$add_error($p, $eh->{$p}); | |
1754 | } | |
1755 | } else { | |
1756 | &$add_error('macro', "$err"); | |
1757 | } | |
1758 | } | |
9a2745a0 DM |
1759 | } |
1760 | ||
6d9246e7 DM |
1761 | $rule->{errors} = $errors if $error_count; |
1762 | ||
7ca36671 DM |
1763 | return $rule; |
1764 | } | |
1765 | ||
9c7e0858 DM |
1766 | sub copy_rule_data { |
1767 | my ($rule, $param) = @_; | |
1768 | ||
1769 | foreach my $k (keys %$rule_properties) { | |
1770 | if (defined(my $v = $param->{$k})) { | |
1771 | if ($v eq '' || $v eq '-') { | |
1772 | delete $rule->{$k}; | |
1773 | } else { | |
1774 | $rule->{$k} = $v; | |
1775 | } | |
9c7e0858 DM |
1776 | } |
1777 | } | |
7ca36671 | 1778 | |
9c7e0858 DM |
1779 | return $rule; |
1780 | } | |
1781 | ||
9f6845cf DM |
1782 | sub rules_modify_permissions { |
1783 | my ($rule_env) = @_; | |
1784 | ||
1785 | if ($rule_env eq 'host') { | |
1786 | return { | |
1787 | check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]], | |
1788 | }; | |
1789 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1790 | return { | |
1791 | check => ['perm', '/', [ 'Sys.Modify' ]], | |
1792 | }; | |
3b4882dc | 1793 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { |
9f6845cf DM |
1794 | return { |
1795 | check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]], | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | return undef; | |
1800 | } | |
1801 | ||
1802 | sub rules_audit_permissions { | |
1803 | my ($rule_env) = @_; | |
1804 | ||
1805 | if ($rule_env eq 'host') { | |
1806 | return { | |
1807 | check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]], | |
1808 | }; | |
1809 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1810 | return { | |
1811 | check => ['perm', '/', [ 'Sys.Audit' ]], | |
1812 | }; | |
3b4882dc | 1813 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { |
9f6845cf DM |
1814 | return { |
1815 | check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]], | |
1816 | } | |
1817 | } | |
1818 | ||
1819 | return undef; | |
1820 | } | |
1821 | ||
9c7e0858 | 1822 | # core functions |
780bcc0f DM |
1823 | |
1824 | sub enable_bridge_firewall { | |
1825 | ||
780bcc0f | 1826 | |
5f0a912c DM |
1827 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
1828 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 1829 | |
6a8a75db DM |
1830 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
1831 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
1832 | ||
780bcc0f DM |
1833 | } |
1834 | ||
b16e818e | 1835 | sub iptables_restore_cmdlist { |
64e0adf4 | 1836 | my ($cmdlist, $table) = @_; |
3a616aa0 | 1837 | |
64e0adf4 AD |
1838 | $table = 'filter' if !$table; |
1839 | run_command(['iptables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist"); | |
3a616aa0 AD |
1840 | } |
1841 | ||
17da5c0f | 1842 | sub ip6tables_restore_cmdlist { |
64e0adf4 | 1843 | my ($cmdlist, $table) = @_; |
17da5c0f | 1844 | |
64e0adf4 AD |
1845 | $table = 'filter' if !$table; |
1846 | run_command(['ip6tables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist"); | |
17da5c0f AD |
1847 | } |
1848 | ||
34cdedfa AD |
1849 | sub ipset_restore_cmdlist { |
1850 | my ($cmdlist) = @_; | |
1851 | ||
bb6ebf3b | 1852 | run_command(['ipset', 'restore'], input => $cmdlist, errmsg => "ipset_restore_cmdlist"); |
34cdedfa AD |
1853 | } |
1854 | ||
151c209e AD |
1855 | sub ebtables_restore_cmdlist { |
1856 | my ($cmdlist) = @_; | |
1857 | ||
c1031ab1 | 1858 | run_command(['ebtables-restore'], input => $cmdlist, errmsg => "ebtables_restore_cmdlist"); |
151c209e AD |
1859 | } |
1860 | ||
de2a57cd | 1861 | sub iptables_get_chains { |
64e0adf4 | 1862 | my ($iptablescmd, $t) = @_; |
17da5c0f AD |
1863 | |
1864 | $iptablescmd = "iptables" if !$iptablescmd; | |
64e0adf4 | 1865 | $t = 'filter' if !$t; |
de2a57cd DM |
1866 | |
1867 | my $res = {}; | |
1868 | ||
1869 | # check what chains we want to track | |
1870 | my $is_pvefw_chain = sub { | |
1871 | my $name = shift; | |
1872 | ||
dec84fcd DM |
1873 | return 1 if $name =~ m/^PVEFW-\S+$/; |
1874 | ||
a3ded5cd | 1875 | return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/; |
954f24b1 | 1876 | |
a3ded5cd | 1877 | return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/; |
954f24b1 | 1878 | |
a3ded5cd | 1879 | return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/; |
a89dfcc6 | 1880 | return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/; |
de2a57cd DM |
1881 | |
1882 | return undef; | |
1883 | }; | |
1884 | ||
1885 | my $table = ''; | |
1886 | ||
c4a2e5ae DM |
1887 | my $hooks = {}; |
1888 | ||
de2a57cd DM |
1889 | my $parser = sub { |
1890 | my $line = shift; | |
1891 | ||
1892 | return if $line =~ m/^#/; | |
1893 | return if $line =~ m/^\s*$/; | |
1894 | ||
1895 | if ($line =~ m/^\*(\S+)$/) { | |
1896 | $table = $1; | |
1897 | return; | |
1898 | } | |
1899 | ||
64e0adf4 | 1900 | return if $table ne $t; |
de2a57cd DM |
1901 | |
1902 | if ($line =~ m/^:(\S+)\s/) { | |
1903 | my $chain = $1; | |
1904 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 1905 | $res->{$chain} = "unknown"; |
09d5f68e | 1906 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 1907 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 1908 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 1909 | $res->{$chain} = $sig; |
64e0adf4 | 1910 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD|PREROUTING)\s+-j\s+PVEFW-\1$/) { |
c4a2e5ae | 1911 | $hooks->{$1} = 1; |
de2a57cd DM |
1912 | } else { |
1913 | # simply ignore the rest | |
1914 | return; | |
1915 | } | |
1916 | }; | |
1917 | ||
c1031ab1 | 1918 | run_command(["$iptablescmd-save"], outfunc => $parser); |
de2a57cd | 1919 | |
c4a2e5ae | 1920 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
1921 | } |
1922 | ||
9bf7d929 DM |
1923 | sub iptables_chain_digest { |
1924 | my ($rules) = @_; | |
1925 | my $digest = Digest::SHA->new('sha1'); | |
1926 | foreach my $rule (@$rules) { # order is important | |
1927 | $digest->add($rule); | |
1928 | } | |
1929 | return $digest->b64digest; | |
1930 | } | |
1931 | ||
3f95d14a DM |
1932 | sub ipset_chain_digest { |
1933 | my ($rules) = @_; | |
4bd0a9c4 | 1934 | |
3f95d14a DM |
1935 | my $digest = Digest::SHA->new('sha1'); |
1936 | foreach my $rule (sort @$rules) { # note: sorted | |
1937 | $digest->add($rule); | |
1938 | } | |
1939 | return $digest->b64digest; | |
1940 | } | |
1941 | ||
34cdedfa AD |
1942 | sub ipset_get_chains { |
1943 | ||
1944 | my $res = {}; | |
1945 | my $chains = {}; | |
1946 | ||
1947 | my $parser = sub { | |
1948 | my $line = shift; | |
1949 | ||
1950 | return if $line =~ m/^#/; | |
1951 | return if $line =~ m/^\s*$/; | |
4b96e877 | 1952 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 | 1953 | my $chain = $1; |
1bf4d1d6 TL |
1954 | # ignore initval from ipset v7.7+, won't set that yet so it'd mess up change detection |
1955 | $line =~ s/\binitval 0x[0-9a-f]+//; | |
81a0bf43 DM |
1956 | $line =~ s/\s+$//; # delete trailing white space |
1957 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
1958 | } else { |
1959 | # simply ignore the rest | |
1960 | return; | |
1961 | } | |
1962 | }; | |
1963 | ||
c1031ab1 | 1964 | run_command(['ipset', 'save'], outfunc => $parser); |
34cdedfa | 1965 | |
3f95d14a DM |
1966 | # compute digest for each chain |
1967 | foreach my $chain (keys %$chains) { | |
1968 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
1969 | } |
1970 | ||
1971 | return $res; | |
1972 | } | |
1973 | ||
151c209e AD |
1974 | sub ebtables_get_chains { |
1975 | ||
1976 | my $res = {}; | |
1977 | my $chains = {}; | |
a1f5aa00 | 1978 | my $table; |
151c209e AD |
1979 | my $parser = sub { |
1980 | my $line = shift; | |
1981 | return if $line =~ m/^#/; | |
1982 | return if $line =~ m/^\s*$/; | |
a1f5aa00 FG |
1983 | if ($line =~ m/^\*(\S+)$/) { |
1984 | $table = $1; | |
1985 | return; | |
1986 | } | |
1987 | ||
1988 | return if $table ne "filter"; | |
1989 | ||
e410833b | 1990 | if ($line =~ m/^:(\S+)\s(ACCEPT|DROP|RETURN)$/) { |
fc1f1de9 WB |
1991 | # Make sure we know chains exist even if they're empty. |
1992 | $chains->{$1} //= []; | |
e410833b | 1993 | $res->{$1}->{policy} = $2; |
84025e99 | 1994 | } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) { |
151c209e AD |
1995 | my $chain = $1; |
1996 | $line =~ s/\s+$//; | |
1997 | push @{$chains->{$chain}}, $line; | |
1998 | } else { | |
1999 | # simply ignore the rest | |
2000 | return; | |
2001 | } | |
2002 | }; | |
2003 | ||
c1031ab1 | 2004 | run_command(['ebtables-save'], outfunc => $parser); |
84025e99 | 2005 | # compute digest for each chain and store rules as well |
151c209e | 2006 | foreach my $chain (keys %$chains) { |
84025e99 SI |
2007 | $res->{$chain}->{rules} = $chains->{$chain}; |
2008 | $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain}); | |
151c209e AD |
2009 | } |
2010 | return $res; | |
2011 | } | |
2012 | ||
e1bfce94 | 2013 | # substitute action of rule according to action hash |
180da76c TW |
2014 | sub rule_substitude_action { |
2015 | my ($rule, $actions) = @_; | |
2016 | ||
2017 | if (my $action = $rule->{action}) { | |
2018 | $rule->{action} = $actions->{$action} if defined($actions->{$action}); | |
2019 | } | |
2020 | } | |
2021 | ||
a44cb745 TW |
2022 | # generate a src or dst match |
2023 | # $dir(ection) is either d or s | |
2024 | sub ipt_gen_src_or_dst_match { | |
2025 | my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_; | |
2026 | ||
2027 | my $srcdst; | |
2028 | if ($dir eq 's') { | |
2029 | $srcdst = "src"; | |
2030 | } elsif ($dir eq 'd') { | |
2031 | $srcdst = "dst"; | |
2032 | } else { | |
2033 | die "ipt_gen_src_or_dst_match: invalid direction $dir \n"; | |
2034 | } | |
2035 | ||
2036 | my $match; | |
2037 | if ($adr =~ m/^\+/) { | |
2038 | if ($adr =~ m/^\+(${ipset_name_pattern})$/) { | |
2039 | my $name = $1; | |
2040 | my $ipset_chain; | |
2041 | if ($fw_conf && $fw_conf->{ipset}->{$name}) { | |
2042 | $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion); | |
2043 | } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) { | |
2044 | $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion); | |
2045 | } else { | |
2046 | die "no such ipset '$name'\n"; | |
2047 | } | |
2048 | $match = "-m set --match-set ${ipset_chain} ${srcdst}"; | |
2049 | } else { | |
2050 | die "invalid security group name '$adr'\n"; | |
2051 | } | |
2052 | } elsif ($adr =~ m/^${ip_alias_pattern}$/){ | |
2053 | my $alias = lc($adr); | |
2054 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; | |
2055 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; | |
2056 | die "no such alias '$adr'\n" if !$e; | |
2057 | $match = "-${dir} $e->{cidr}"; | |
2058 | } elsif ($adr =~ m/\-/){ | |
2059 | $match = "-m iprange --${srcdst}-range $adr"; | |
2060 | } else { | |
2061 | $match = "-${dir} $adr"; | |
2062 | } | |
2063 | ||
2064 | return $match; | |
2065 | } | |
2066 | ||
30c390f9 TW |
2067 | # convert a %rule to an array of iptables commands |
2068 | sub ipt_rule_to_cmds { | |
2069 | my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_; | |
2070 | ||
2071 | die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen | |
2072 | ||
2073 | my @match = (); | |
2074 | ||
2075 | if (defined $rule->{match}) { | |
2076 | push @match, $rule->{match}; | |
2077 | } else { | |
2078 | push @match, "-i $rule->{iface_in}" if $rule->{iface_in}; | |
2079 | push @match, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
2080 | ||
2081 | if ($rule->{source}) { | |
2082 | push @match, ipt_gen_src_or_dst_match($rule->{source}, 's', $ipversion, $cluster_conf, $fw_conf); | |
2083 | } | |
2084 | if ($rule->{dest}) { | |
2085 | push @match, ipt_gen_src_or_dst_match($rule->{dest}, 'd', $ipversion, $cluster_conf, $fw_conf); | |
2086 | } | |
2087 | ||
2088 | if (my $proto = $rule->{proto}) { | |
2089 | push @match, "-p $proto"; | |
2090 | ||
f776d6de WB |
2091 | my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1); |
2092 | my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0); | |
30c390f9 | 2093 | |
f776d6de | 2094 | my $add_dport = sub { |
88614d72 | 2095 | return if !defined($rule->{dport}); |
3dffed4c | 2096 | |
0588bf2a | 2097 | # NOTE: we re-use dport to store --icmp-type for icmp* protocol |
30c390f9 | 2098 | if ($proto eq 'icmp') { |
0588bf2a | 2099 | $is_valid_icmp_type->($rule->{dport}, $icmp_type_names); |
30c390f9 TW |
2100 | push @match, "-m icmp --icmp-type $rule->{dport}"; |
2101 | } elsif ($proto eq 'icmpv6') { | |
0588bf2a | 2102 | $is_valid_icmp_type->($rule->{dport}, $icmpv6_type_names); |
30c390f9 TW |
2103 | push @match, "-m icmpv6 --icmpv6-type $rule->{dport}"; |
2104 | } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) { | |
2105 | die "protocol $proto does not have ports\n"; | |
f776d6de WB |
2106 | } elsif ($multidport) { |
2107 | push @match, "--match multiport", "--dports $rule->{dport}"; | |
30c390f9 | 2108 | } else { |
88614d72 | 2109 | return if !$rule->{dport}; |
f776d6de | 2110 | push @match, "--dport $rule->{dport}"; |
30c390f9 | 2111 | } |
f776d6de | 2112 | }; |
30c390f9 | 2113 | |
f776d6de WB |
2114 | my $add_sport = sub { |
2115 | return if !$rule->{sport}; | |
3dffed4c | 2116 | |
30c390f9 TW |
2117 | die "protocol $proto does not have ports\n" |
2118 | if !$PROTOCOLS_WITH_PORTS->{$proto}; | |
f776d6de WB |
2119 | if ($multisport) { |
2120 | push @match, "--match multiport", "--sports $rule->{sport}"; | |
30c390f9 TW |
2121 | } else { |
2122 | push @match, "--sport $rule->{sport}"; | |
2123 | } | |
f776d6de WB |
2124 | }; |
2125 | ||
72194c7c ML |
2126 | my $add_icmp_type = sub { |
2127 | return if !defined($rule->{'icmp-type'}) || $rule->{'icmp-type'} eq ''; | |
2128 | ||
2129 | die "'icmp-type' can only be set if 'icmp', 'icmpv6' or 'ipv6-icmp' is specified\n" | |
2130 | if ($proto ne 'icmp') && ($proto ne 'icmpv6') && ($proto ne 'ipv6-icmp'); | |
2131 | my $type = $proto eq 'icmp' ? 'icmp-type' : 'icmpv6-type'; | |
2132 | ||
2133 | push @match, "-m $proto --$type $rule->{'icmp-type'}"; | |
2134 | }; | |
2135 | ||
3dffed4c | 2136 | # order matters - single port before multiport! |
72194c7c | 2137 | $add_icmp_type->(); |
f776d6de WB |
2138 | $add_dport->() if $multisport; |
2139 | $add_sport->(); | |
2140 | $add_dport->() if !$multisport; | |
30c390f9 TW |
2141 | } elsif ($rule->{dport} || $rule->{sport}) { |
2142 | die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport}; | |
2143 | die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport}; | |
2144 | } | |
2145 | ||
2146 | push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; | |
2147 | } | |
2148 | my $matchstr = scalar(@match) ? join(' ', @match) : ""; | |
2149 | ||
2150 | my $targetstr; | |
2151 | if (defined $rule->{target}) { | |
2152 | $targetstr = $rule->{target}; | |
2153 | } else { | |
2154 | my $action = (defined $rule->{action}) ? $rule->{action} : ""; | |
2155 | my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK'; | |
2156 | $targetstr = ($goto) ? "-g $action" : "-j $action"; | |
2157 | } | |
2158 | ||
2159 | my @iptcmds; | |
2db2b6aa TL |
2160 | my $log = $rule->{log}; |
2161 | if (defined($log) && $log ne 'nolog') { | |
3489f8a2 CE |
2162 | my $loglevel = $log_level_hash->{$log}; |
2163 | my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel); | |
30c390f9 TW |
2164 | push @iptcmds, "-A $chain $matchstr $logaction"; |
2165 | } | |
2166 | push @iptcmds, "-A $chain $matchstr $targetstr"; | |
2167 | return @iptcmds; | |
2168 | } | |
2169 | ||
eba0fb64 | 2170 | sub ruleset_generate_rule { |
3489f8a2 | 2171 | my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_; |
eba0fb64 | 2172 | |
e5076eee DM |
2173 | my $rules; |
2174 | ||
2175 | if ($rule->{macro}) { | |
35d1d6da | 2176 | $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion); |
e5076eee DM |
2177 | } else { |
2178 | $rules = [ $rule ]; | |
2179 | } | |
2180 | ||
30c390f9 TW |
2181 | # update all or nothing |
2182 | my @ipt_rule_cmds; | |
2183 | foreach my $r (@$rules) { | |
3489f8a2 | 2184 | push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid); |
30c390f9 TW |
2185 | } |
2186 | foreach my $c (@ipt_rule_cmds) { | |
2187 | ruleset_add_ipt_cmd($ruleset, $chain, $c); | |
2188 | } | |
2189 | } | |
2190 | ||
3fa83edf DM |
2191 | sub ruleset_create_chain { |
2192 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 2193 | |
d050c724 | 2194 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 2195 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 2196 | |
3fa83edf DM |
2197 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
2198 | ||
2199 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
2200 | } |
2201 | ||
3fa83edf DM |
2202 | sub ruleset_chain_exist { |
2203 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 2204 | |
3fa83edf DM |
2205 | return $ruleset->{$chain} ? 1 : undef; |
2206 | } | |
3a616aa0 | 2207 | |
30c390f9 TW |
2208 | # add an iptables command (like generated by ipt_rule_to_cmds) to a chain |
2209 | sub ruleset_add_ipt_cmd { | |
2210 | my ($ruleset, $chain, $iptcmd) = @_; | |
2211 | ||
2212 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; | |
2213 | ||
2214 | push @{$ruleset->{$chain}}, $iptcmd; | |
2215 | } | |
2216 | ||
1e9c5070 | 2217 | sub ruleset_addrule { |
3489f8a2 | 2218 | my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_; |
1e9c5070 | 2219 | |
3489f8a2 | 2220 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
1e9c5070 | 2221 | |
3489f8a2 CE |
2222 | if ($log) { |
2223 | my $loglevel = $log_level_hash->{$log}; | |
2224 | my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel); | |
7f7930f8 | 2225 | push @{$ruleset->{$chain}}, "-A $chain $match $logaction"; |
3489f8a2 CE |
2226 | } |
2227 | # for stable ebtables digests avoid double-spaces to match ebtables-save output | |
2228 | $match .= ' ' if length($match); | |
2229 | push @{$ruleset->{$chain}}, "-A $chain ${match}$action"; | |
1e9c5070 TW |
2230 | } |
2231 | ||
3fa83edf | 2232 | sub ruleset_insertrule { |
1e9c5070 | 2233 | my ($ruleset, $chain, $match, $action, $log) = @_; |
3a616aa0 | 2234 | |
3fa83edf | 2235 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 2236 | |
1e9c5070 | 2237 | unshift @{$ruleset->{$chain}}, "-A $chain $match $action"; |
3fa83edf | 2238 | } |
3a616aa0 | 2239 | |
782c4cde DM |
2240 | sub get_log_rule_base { |
2241 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 2242 | |
782c4cde | 2243 | $vmid = 0 if !defined($vmid); |
7f7930f8 | 2244 | $msg = "" if !defined($msg); |
782c4cde | 2245 | |
cc37e000 TL |
2246 | my $rlimit = ''; |
2247 | if (defined($global_log_ratelimit)) { | |
2248 | $rlimit = "-m limit $global_log_ratelimit "; | |
2249 | } | |
2250 | ||
cbb5d6f3 | 2251 | # Note: we use special format for prefix to pass further |
7f7930f8 | 2252 | # info to log daemon (VMID, LOGLEVEL and CHAIN) |
cc37e000 | 2253 | return "${rlimit}-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; |
782c4cde DM |
2254 | } |
2255 | ||
ead850e8 | 2256 | sub ruleset_add_chain_policy { |
88c26d5e | 2257 | my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
2258 | |
2259 | if ($policy eq 'ACCEPT') { | |
2260 | ||
180da76c TW |
2261 | my $rule = { action => 'ACCEPT' }; |
2262 | rule_substitude_action($rule, { ACCEPT => $accept_action}); | |
2263 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule); | |
ead850e8 DM |
2264 | |
2265 | } elsif ($policy eq 'DROP') { | |
2266 | ||
1e9c5070 | 2267 | ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop"); |
ead850e8 | 2268 | |
7f7930f8 | 2269 | ruleset_addrule($ruleset, $chain, "", "-j DROP", $loglevel, "policy $policy: ", $vmid); |
ead850e8 | 2270 | } elsif ($policy eq 'REJECT') { |
1e9c5070 | 2271 | ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject"); |
ead850e8 | 2272 | |
d8d4dd67 | 2273 | ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid); |
ead850e8 DM |
2274 | } else { |
2275 | # should not happen | |
2276 | die "internal error: unknown policy '$policy'"; | |
2277 | } | |
2278 | } | |
2279 | ||
a83abe93 | 2280 | sub ruleset_chain_add_ndp { |
e8415920 | 2281 | my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_; |
a83abe93 WB |
2282 | return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp}); |
2283 | ||
1e9c5070 | 2284 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation", $accept); |
d7aa51ac | 2285 | if ($direction ne 'OUT' || $options->{radv}) { |
1e9c5070 | 2286 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", $accept); |
d7aa51ac | 2287 | } |
1e9c5070 TW |
2288 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation", $accept); |
2289 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement", $accept); | |
a83abe93 WB |
2290 | } |
2291 | ||
e2943485 | 2292 | sub ruleset_chain_add_conn_filters { |
27c49e25 | 2293 | my ($ruleset, $chain, $allow_invalid, $accept) = @_; |
e2943485 | 2294 | |
27c49e25 CE |
2295 | if (!$allow_invalid) { |
2296 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP"); | |
2297 | } | |
1e9c5070 | 2298 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept"); |
e2943485 DM |
2299 | } |
2300 | ||
2301 | sub ruleset_chain_add_input_filters { | |
88c26d5e | 2302 | my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_; |
2428e394 AD |
2303 | |
2304 | if ($cluster_conf->{ipset}->{blacklist}){ | |
b5831a0d AD |
2305 | if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) { |
2306 | ruleset_create_chain($ruleset, "PVEFW-blacklist"); | |
3489f8a2 | 2307 | ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0); |
b5831a0d | 2308 | } |
88c26d5e | 2309 | my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion); |
1e9c5070 | 2310 | ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist"); |
2428e394 | 2311 | } |
e2943485 DM |
2312 | |
2313 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { | |
5b5c42b1 | 2314 | if ($ipversion == 4) { |
1e9c5070 | 2315 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW", "-j PVEFW-smurfs"); |
5b5c42b1 | 2316 | } |
e2943485 DM |
2317 | } |
2318 | ||
2319 | if ($options->{tcpflags}) { | |
1e9c5070 | 2320 | ruleset_addrule($ruleset, $chain, "-p tcp", "-j PVEFW-tcpflags"); |
e2943485 DM |
2321 | } |
2322 | } | |
2323 | ||
9e15114a | 2324 | sub ruleset_create_vm_chain { |
88c26d5e | 2325 | my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_; |
3a616aa0 | 2326 | |
9e15114a | 2327 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 2328 | my $accept = generate_nfqueue($options); |
3a616aa0 | 2329 | |
ce15d90b | 2330 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
dcafc5fb WB |
2331 | if ($ipversion == 4) { |
2332 | if ($direction eq 'OUT') { | |
75a12a9d | 2333 | ruleset_generate_rule($ruleset, $chain, $ipversion, |
dcafc5fb WB |
2334 | { action => 'PVEFW-SET-ACCEPT-MARK', |
2335 | proto => 'udp', sport => 68, dport => 67 }); | |
2336 | } else { | |
2337 | ruleset_generate_rule($ruleset, $chain, $ipversion, | |
2338 | { action => 'ACCEPT', | |
2339 | proto => 'udp', sport => 67, dport => 68 }); | |
2340 | } | |
2341 | } elsif ($ipversion == 6) { | |
2342 | if ($direction eq 'OUT') { | |
2343 | ruleset_generate_rule($ruleset, $chain, $ipversion, | |
2344 | { action => 'PVEFW-SET-ACCEPT-MARK', | |
2345 | proto => 'udp', sport => 546, dport => 547 }); | |
2346 | } else { | |
2347 | ruleset_generate_rule($ruleset, $chain, $ipversion, | |
2348 | { action => 'ACCEPT', | |
2349 | proto => 'udp', sport => 547, dport => 546 }); | |
2350 | } | |
76a2d1e7 | 2351 | } |
dcafc5fb | 2352 | |
ce15d90b DM |
2353 | } |
2354 | ||
b21aca2c DM |
2355 | if ($direction eq 'OUT') { |
2356 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
1e9c5070 | 2357 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr", "-j DROP"); |
b21aca2c | 2358 | } |
d7aa51ac | 2359 | if ($ipversion == 6 && !$options->{radv}) { |
1e9c5070 | 2360 | ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement", "-j DROP"); |
d7aa51ac | 2361 | } |
808d711d | 2362 | if ($ipfilter_ipset) { |
1e9c5070 | 2363 | ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src", "-j DROP"); |
808d711d | 2364 | } |
1e9c5070 | 2365 | ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark |
c29f55c9 | 2366 | } |
e8415920 WB |
2367 | |
2368 | my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept"; | |
2369 | ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action); | |
9e15114a DM |
2370 | } |
2371 | ||
4bc6b5ac | 2372 | sub ruleset_add_group_rule { |
aedde2c2 | 2373 | my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_; |
4bc6b5ac DM |
2374 | |
2375 | my $group = $rule->{action}; | |
2376 | my $group_chain = "GROUP-$group-$direction"; | |
2377 | if(!ruleset_chain_exist($ruleset, $group_chain)){ | |
aedde2c2 | 2378 | generate_group_rules($ruleset, $cluster_conf, $group, $ipversion); |
4bc6b5ac | 2379 | } |
bfc488f6 | 2380 | |
f8b12fff | 2381 | if ($direction eq 'OUT' && $rule->{iface_out}) { |
1e9c5070 | 2382 | ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out}", "-j $group_chain"); |
f8b12fff | 2383 | } elsif ($direction eq 'IN' && $rule->{iface_in}) { |
1e9c5070 | 2384 | ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in}", "-j $group_chain"); |
4bc6b5ac | 2385 | } else { |
1e9c5070 | 2386 | ruleset_addrule($ruleset, $chain, "", "-j $group_chain"); |
4bc6b5ac DM |
2387 | } |
2388 | ||
1e9c5070 | 2389 | ruleset_addrule($ruleset, $chain, "-m mark --mark $FWACCEPTMARK_ON", "-j $action"); |
4bc6b5ac DM |
2390 | } |
2391 | ||
9e15114a | 2392 | sub ruleset_generate_vm_rules { |
3489f8a2 | 2393 | my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_; |
9e15114a DM |
2394 | |
2395 | my $lc_direction = lc($direction); | |
c29f55c9 | 2396 | |
6b8ca015 DM |
2397 | my $in_accept = generate_nfqueue($options); |
2398 | ||
92e976b3 DM |
2399 | foreach my $rule (@$rules) { |
2400 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
b7ab6989 | 2401 | next if !$rule->{enable} || $rule->{errors}; |
006490cb | 2402 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
84870b1a | 2403 | |
92e976b3 | 2404 | if ($rule->{type} eq 'group') { |
4bc6b5ac | 2405 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction, |
aedde2c2 | 2406 | $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion); |
92e976b3 DM |
2407 | } else { |
2408 | next if $rule->{type} ne $lc_direction; | |
921dfb33 | 2409 | eval { |
3489f8a2 | 2410 | $rule->{logmsg} = "$rule->{action}: "; |
921dfb33 | 2411 | if ($direction eq 'OUT') { |
180da76c | 2412 | rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }); |
3489f8a2 | 2413 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid); |
921dfb33 | 2414 | } else { |
180da76c | 2415 | rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" }); |
3489f8a2 | 2416 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid); |
921dfb33 DM |
2417 | } |
2418 | }; | |
2419 | warn $@ if $@; | |
4e6112f9 | 2420 | } |
3a616aa0 | 2421 | } |
9e15114a DM |
2422 | } |
2423 | ||
b47ecc88 AD |
2424 | sub generate_nfqueue { |
2425 | my ($options) = @_; | |
2426 | ||
73089769 DM |
2427 | if ($options->{ips}) { |
2428 | my $action = "NFQUEUE"; | |
2429 | if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
2430 | if (defined($3) && defined($1)) { | |
b47ecc88 | 2431 | $action .= " --queue-balance $1:$3"; |
73089769 | 2432 | } elsif (defined($1)) { |
b47ecc88 AD |
2433 | $action .= " --queue-num $1"; |
2434 | } | |
2435 | } | |
8dc92812 | 2436 | $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10 |
73089769 DM |
2437 | return $action; |
2438 | } else { | |
2439 | return "ACCEPT"; | |
b47ecc88 | 2440 | } |
b47ecc88 AD |
2441 | } |
2442 | ||
da6fc60b | 2443 | sub ruleset_generate_vm_ipsrules { |
a01c32c7 | 2444 | my ($ruleset, $options, $direction, $iface) = @_; |
da6fc60b AD |
2445 | |
2446 | if ($options->{ips} && $direction eq 'IN') { | |
2447 | my $nfqueue = generate_nfqueue($options); | |
2448 | ||
a01c32c7 | 2449 | if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) { |
da6fc60b AD |
2450 | ruleset_create_chain($ruleset, "PVEFW-IPS"); |
2451 | } | |
2452 | ||
1e9c5070 | 2453 | ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged", "-j $nfqueue"); |
da6fc60b AD |
2454 | } |
2455 | } | |
2456 | ||
9e15114a | 2457 | sub generate_tap_rules_direction { |
84870b1a | 2458 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_; |
9e15114a DM |
2459 | |
2460 | my $lc_direction = lc($direction); | |
2461 | ||
2462 | my $rules = $vmfw_conf->{rules}; | |
2463 | ||
2464 | my $options = $vmfw_conf->{options}; | |
2465 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
2466 | ||
2467 | my $tapchain = "$iface-$direction"; | |
2468 | ||
b692f42c | 2469 | my $ipfilter_name = compute_ipfilter_ipset_name($netid); |
88c26d5e | 2470 | my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion) |
74601077 | 2471 | if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name}; |
808d711d | 2472 | |
a34cfdd0 | 2473 | if ($options->{enable}) { |
033a15b3 ML |
2474 | # create chain with mac and ip filter |
2475 | ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction); | |
2476 | ||
3489f8a2 | 2477 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid); |
3a616aa0 | 2478 | |
a34cfdd0 | 2479 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface); |
da6fc60b | 2480 | |
a34cfdd0 DM |
2481 | # implement policy |
2482 | my $policy; | |
ccae0b50 | 2483 | |
a34cfdd0 DM |
2484 | if ($direction eq 'OUT') { |
2485 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
2486 | } else { | |
76448f08 | 2487 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
a34cfdd0 | 2488 | } |
ccae0b50 | 2489 | |
a34cfdd0 DM |
2490 | my $accept = generate_nfqueue($options); |
2491 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
88c26d5e | 2492 | ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action); |
a34cfdd0 DM |
2493 | } else { |
2494 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT'; | |
88c26d5e | 2495 | ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action); |
a34cfdd0 | 2496 | } |
3a616aa0 | 2497 | |
3fa83edf | 2498 | # plug the tap chain to bridge chain |
3cc81077 | 2499 | if ($direction eq 'IN') { |
a01c32c7 | 2500 | ruleset_addrule($ruleset, "PVEFW-FWBR-IN", |
8f3aa9cc | 2501 | "-m physdev --physdev-is-bridged --physdev-out $iface", "-j $tapchain"); |
3cc81077 | 2502 | } else { |
a01c32c7 | 2503 | ruleset_addrule($ruleset, "PVEFW-FWBR-OUT", |
8f3aa9cc | 2504 | "-m physdev --physdev-is-bridged --physdev-in $iface", "-j $tapchain"); |
3cc81077 | 2505 | } |
3a616aa0 AD |
2506 | } |
2507 | ||
d18c1e2b | 2508 | sub enable_host_firewall { |
06208a01 | 2509 | my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf) = @_; |
0bd5f137 | 2510 | |
92e976b3 | 2511 | my $options = $hostfw_conf->{options}; |
63324b09 | 2512 | my $cluster_options = $cluster_conf->{options}; |
92e976b3 | 2513 | my $rules = $hostfw_conf->{rules}; |
35f0c37e | 2514 | my $cluster_rules = $cluster_conf->{rules}; |
178a63be | 2515 | |
06208a01 SR |
2516 | # corosync preparation |
2517 | my $corosync_rule = "-p udp --dport 5404:5405"; | |
2518 | my $corosync_local_addresses = {}; | |
eacd4748 | 2519 | my $multicast_enabled; |
06208a01 SR |
2520 | my $local_hostname = PVE::INotify::nodename(); |
2521 | if (defined($corosync_conf)) { | |
2522 | PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub { | |
2523 | my ($node_name, $node_ip, $node_ipversion, $key) = @_; | |
2524 | ||
2525 | if ($node_name eq $local_hostname) { | |
2526 | $corosync_local_addresses->{$key} = $node_ip; | |
2527 | } | |
2528 | }); | |
eacd4748 SR |
2529 | |
2530 | # allow multicast only if enabled in config | |
81a0a9ff FG |
2531 | my $corosync_transport = $corosync_conf->{main}->{totem}->{transport}; |
2532 | $multicast_enabled = defined($corosync_transport) && $corosync_transport eq 'udp'; | |
06208a01 SR |
2533 | } |
2534 | ||
3fa83edf | 2535 | # host inbound firewall |
dec84fcd DM |
2536 | my $chain = "PVEFW-HOST-IN"; |
2537 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 2538 | |
178a63be DM |
2539 | my $loglevel = get_option_log_level($options, "log_level_in"); |
2540 | ||
1e9c5070 | 2541 | ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT"); |
4ac863a6 | 2542 | |
27c49e25 | 2543 | ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT'); |
e8415920 | 2544 | ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN'); |
88c26d5e | 2545 | ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel); |
fb424a00 | 2546 | |
23e888f8 DM |
2547 | # we use RETURN because we need to check also tap rules |
2548 | my $accept_action = 'RETURN'; | |
2549 | ||
1e9c5070 | 2550 | ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast |
cc8dc02f | 2551 | |
35f0c37e DM |
2552 | # add host rules first, so that cluster wide rules can be overwritten |
2553 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 | 2554 | next if !$rule->{enable} || $rule->{errors}; |
35d1d6da | 2555 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
bfc488f6 | 2556 | |
f8b12fff | 2557 | $rule->{iface_in} = $rule->{iface} if $rule->{iface}; |
5383df39 | 2558 | |
1a9978ed | 2559 | eval { |
4fed896b | 2560 | $rule->{logmsg} = "$rule->{action}: "; |
1a9978ed | 2561 | if ($rule->{type} eq 'group') { |
aedde2c2 | 2562 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion); |
1a9978ed | 2563 | } elsif ($rule->{type} eq 'in') { |
180da76c | 2564 | rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }); |
3489f8a2 | 2565 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0); |
1a9978ed DM |
2566 | } |
2567 | }; | |
2568 | warn $@ if $@; | |
f8b12fff | 2569 | delete $rule->{iface_in}; |
0bd5f137 | 2570 | } |
eb399cef DM |
2571 | |
2572 | # allow standard traffic for management ipset (includes cluster network) | |
88c26d5e | 2573 | my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion); |
708ba714 | 2574 | my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src"; |
1e9c5070 TW |
2575 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006", "-j $accept_action"); # PVE API |
2576 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console | |
2577 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy | |
2578 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH | |
94e4ec75 | 2579 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 60000:60050", "-j $accept_action"); # Migration |
bfc488f6 | 2580 | |
06208a01 SR |
2581 | # corosync inbound rules |
2582 | if (defined($corosync_conf)) { | |
eacd4748 SR |
2583 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action") |
2584 | if $multicast_enabled; | |
3bc79f87 | 2585 | |
06208a01 SR |
2586 | PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub { |
2587 | my ($node_name, $node_ip, $node_ipversion, $key) = @_; | |
a9c463ce | 2588 | my $destination = $corosync_local_addresses->{$key}; |
06208a01 | 2589 | |
a9c463ce | 2590 | if ($node_name ne $local_hostname && defined($destination)) { |
06208a01 | 2591 | # accept only traffic on same ring |
a9c463ce | 2592 | ruleset_addrule($ruleset, $chain, "-d $destination -s $node_ip $corosync_rule", "-j $accept_action"); |
06208a01 SR |
2593 | } |
2594 | }); | |
3bc79f87 | 2595 | } |
0bd5f137 | 2596 | |
23e888f8 | 2597 | # implement input policy |
63324b09 | 2598 | my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default |
88c26d5e | 2599 | ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 2600 | |
3fa83edf | 2601 | # host outbound firewall |
aadd745e | 2602 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
2603 | ruleset_create_chain($ruleset, $chain); |
2604 | ||
178a63be DM |
2605 | $loglevel = get_option_log_level($options, "log_level_out"); |
2606 | ||
1e9c5070 | 2607 | ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT"); |
e2943485 | 2608 | |
27c49e25 | 2609 | ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT'); |
e2943485 | 2610 | |
23e888f8 DM |
2611 | # we use RETURN because we may want to check other thigs later |
2612 | $accept_action = 'RETURN'; | |
e8415920 | 2613 | ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action"); |
23e888f8 | 2614 | |
1e9c5070 | 2615 | ruleset_addrule($ruleset, $chain, "-p igmp", "-j $accept_action"); # important for multicast |
cc8dc02f | 2616 | |
35f0c37e DM |
2617 | # add host rules first, so that cluster wide rules can be overwritten |
2618 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 | 2619 | next if !$rule->{enable} || $rule->{errors}; |
35d1d6da | 2620 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
5383df39 | 2621 | |
f8b12fff | 2622 | $rule->{iface_out} = $rule->{iface} if $rule->{iface}; |
1a9978ed | 2623 | eval { |
3489f8a2 | 2624 | $rule->{logmsg} = "$rule->{action}: "; |
1a9978ed | 2625 | if ($rule->{type} eq 'group') { |
aedde2c2 | 2626 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion); |
1a9978ed | 2627 | } elsif ($rule->{type} eq 'out') { |
180da76c | 2628 | rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }); |
3489f8a2 | 2629 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0); |
1a9978ed DM |
2630 | } |
2631 | }; | |
2632 | warn $@ if $@; | |
f8b12fff | 2633 | delete $rule->{iface_out}; |
0bd5f137 AD |
2634 | } |
2635 | ||
3bc79f87 | 2636 | # allow standard traffic on cluster network |
06208a01 SR |
2637 | my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; |
2638 | my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion}; | |
2639 | ||
35d1d6da | 2640 | if ($localnet && ($ipversion == $localnet_ver)) { |
1e9c5070 TW |
2641 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API |
2642 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH | |
2643 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console | |
2644 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy | |
06208a01 | 2645 | } |
bfc488f6 | 2646 | |
06208a01 SR |
2647 | # corosync outbound rules |
2648 | if (defined($corosync_conf)) { | |
eacd4748 SR |
2649 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action") |
2650 | if $multicast_enabled; | |
06208a01 SR |
2651 | |
2652 | PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub { | |
2653 | my ($node_name, $node_ip, $node_ipversion, $key) = @_; | |
a9c463ce | 2654 | my $source = $corosync_local_addresses->{$key}; |
06208a01 | 2655 | |
a9c463ce | 2656 | if ($node_name ne $local_hostname && defined($source)) { |
06208a01 | 2657 | # accept only traffic on same ring |
a9c463ce | 2658 | ruleset_addrule($ruleset, $chain, "-s $source -d $node_ip $corosync_rule", "-j $accept_action"); |
06208a01 SR |
2659 | } |
2660 | }); | |
3bc79f87 DM |
2661 | } |
2662 | ||
23e888f8 | 2663 | # implement output policy |
63324b09 | 2664 | $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default |
88c26d5e | 2665 | ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action); |
6158271d | 2666 | |
1e9c5070 TW |
2667 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "", "-j PVEFW-HOST-OUT"); |
2668 | ruleset_addrule($ruleset, "PVEFW-INPUT", "", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
2669 | } |
2670 | ||
2671 | sub generate_group_rules { | |
aedde2c2 | 2672 | my ($ruleset, $cluster_conf, $group, $ipversion) = @_; |
9d31b418 | 2673 | |
c6f5cc88 | 2674 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 2675 | |
b4deedab DM |
2676 | if (!$rules) { |
2677 | warn "no such security group '$group'\n"; | |
2678 | $rules = []; # create empty chain | |
2679 | } | |
2680 | ||
3fa83edf | 2681 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 2682 | |
3fa83edf | 2683 | ruleset_create_chain($ruleset, $chain); |
1e9c5070 | 2684 | ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark |
9d31b418 | 2685 | |
92e976b3 DM |
2686 | foreach my $rule (@$rules) { |
2687 | next if $rule->{type} ne 'in'; | |
7a5a402b | 2688 | next if !$rule->{enable} || $rule->{errors}; |
aedde2c2 | 2689 | next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion; |
180da76c | 2690 | rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }); |
2dc0a26e | 2691 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf); |
9d31b418 AD |
2692 | } |
2693 | ||
3fa83edf | 2694 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 2695 | |
3fa83edf | 2696 | ruleset_create_chain($ruleset, $chain); |
1e9c5070 | 2697 | ruleset_addrule($ruleset, $chain, "", "-j MARK --set-mark $FWACCEPTMARK_OFF"); # clear mark |
9d31b418 | 2698 | |
92e976b3 DM |
2699 | foreach my $rule (@$rules) { |
2700 | next if $rule->{type} ne 'out'; | |
7a5a402b | 2701 | next if !$rule->{enable} || $rule->{errors}; |
aedde2c2 | 2702 | next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion; |
92e976b3 DM |
2703 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to |
2704 | # check also other tap rules later | |
180da76c | 2705 | rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }); |
2dc0a26e | 2706 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf); |
9d31b418 | 2707 | } |
9d31b418 AD |
2708 | } |
2709 | ||
51bae274 DM |
2710 | my $MAX_NETS = 32; |
2711 | my $valid_netdev_names = {}; | |
2712 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
2713 | $valid_netdev_names->{"net$i"} = 1; | |
2714 | } | |
5e1267a5 | 2715 | |
fe3d79b4 WB |
2716 | sub get_mark_values { |
2717 | my ($value, $mask) = @_; | |
2718 | $value = hex($value) if $value =~ /^0x/; | |
2719 | $mask = hex($mask) if defined($mask) && $mask =~ /^0x/; | |
2720 | $mask = 0xffffffff if !defined($mask); | |
2721 | return ($value, $mask); | |
2722 | } | |
2723 | ||
51bae274 | 2724 | sub parse_fw_rule { |
40af93c4 | 2725 | my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env) = @_; |
5e1267a5 | 2726 | |
d4cda423 DM |
2727 | my $orig_line = $line; |
2728 | ||
6d9246e7 DM |
2729 | my $rule = {}; |
2730 | ||
11bac5c2 | 2731 | # we can add single line comments to the end of the rule |
6d9246e7 DM |
2732 | if ($line =~ s/#\s*(.*?)\s*$//) { |
2733 | $rule->{comment} = decode('utf8', $1); | |
2734 | } | |
11bac5c2 DM |
2735 | |
2736 | # we can disable a rule when prefixed with '|' | |
ea9e5116 | 2737 | |
6d9246e7 | 2738 | $rule->{enable} = $line =~ s/^\|// ? 0 : 1; |
51bae274 | 2739 | |
dba740a9 DM |
2740 | $line =~ s/^(\S+)\s+(\S+)\s*// || |
2741 | die "unable to parse rule: $line\n"; | |
6d9246e7 DM |
2742 | |
2743 | $rule->{type} = lc($1); | |
2744 | $rule->{action} = $2; | |
2745 | ||
2746 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2747 | if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
2748 | $rule->{macro} = $1; | |
2749 | $rule->{action} = $2; | |
92e976b3 | 2750 | } |
51bae274 DM |
2751 | } |
2752 | ||
dba740a9 DM |
2753 | while (length($line)) { |
2754 | if ($line =~ s/^-i (\S+)\s*//) { | |
6d9246e7 | 2755 | $rule->{iface} = $1; |
dba740a9 DM |
2756 | next; |
2757 | } | |
51bae274 | 2758 | |
6d9246e7 | 2759 | last if $rule->{type} eq 'group'; |
51bae274 | 2760 | |
ab9a6ae6 | 2761 | if ($line =~ s/^(?:-p|--?proto) (\S+)\s*//) { |
6d9246e7 | 2762 | $rule->{proto} = $1; |
dba740a9 DM |
2763 | next; |
2764 | } | |
6d9246e7 | 2765 | |
ab9a6ae6 | 2766 | if ($line =~ s/^--?dport (\S+)\s*//) { |
6d9246e7 | 2767 | $rule->{dport} = $1; |
dba740a9 DM |
2768 | next; |
2769 | } | |
6d9246e7 | 2770 | |
ab9a6ae6 | 2771 | if ($line =~ s/^--?sport (\S+)\s*//) { |
6d9246e7 | 2772 | $rule->{sport} = $1; |
dba740a9 DM |
2773 | next; |
2774 | } | |
ab9a6ae6 | 2775 | if ($line =~ s/^--?source (\S+)\s*//) { |
6d9246e7 | 2776 | $rule->{source} = $1; |
dba740a9 DM |
2777 | next; |
2778 | } | |
ab9a6ae6 | 2779 | if ($line =~ s/^--?dest (\S+)\s*//) { |
6d9246e7 | 2780 | $rule->{dest} = $1; |
dba740a9 DM |
2781 | next; |
2782 | } | |
ab9a6ae6 | 2783 | if ($line =~ s/^--?log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) { |
3489f8a2 CE |
2784 | $rule->{log} = $1; |
2785 | next; | |
2786 | } | |
ab9a6ae6 | 2787 | if ($line =~ s/^--?icmp-type (\S+)\s*//) { |
72194c7c ML |
2788 | $rule->{'icmp-type'} = $1; |
2789 | next; | |
2790 | } | |
51bae274 | 2791 | |
dba740a9 DM |
2792 | last; |
2793 | } | |
ba791b1f | 2794 | |
dba740a9 | 2795 | die "unable to parse rule parameters: $line\n" if length($line); |
51bae274 | 2796 | |
a523e057 | 2797 | $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1); |
eedcb564 WB |
2798 | if ($rule->{errors}) { |
2799 | # The verbose flag really means we're running from the CLI and want | |
2800 | # output on the console - in the other case we really want such errors | |
2801 | # to go into the syslog instead. | |
2802 | my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) }; | |
2803 | $log->("$prefix - errors in rule parameters: $orig_line\n"); | |
d4cda423 | 2804 | foreach my $p (keys %{$rule->{errors}}) { |
eedcb564 | 2805 | $log->(" $p: $rule->{errors}->{$p}\n"); |
d4cda423 DM |
2806 | } |
2807 | } | |
6d9246e7 DM |
2808 | |
2809 | return $rule; | |
51bae274 DM |
2810 | } |
2811 | ||
c5e8b008 AD |
2812 | sub verify_ethertype { |
2813 | my ($value) = @_; | |
2814 | my $types = get_etc_ethertypes(); | |
2815 | die "unknown ethernet protocol type: $value\n" | |
2816 | if !defined($types->{byname}->{$value}) && | |
2817 | !defined($types->{byid}->{$value}); | |
2818 | } | |
2819 | ||
2d404ffc | 2820 | sub parse_vmfw_option { |
85c6eaed DM |
2821 | my ($line) = @_; |
2822 | ||
2823 | my ($opt, $value); | |
2824 | ||
178a63be DM |
2825 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
2826 | ||
74601077 | 2827 | if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
2828 | $opt = lc($1); |
2829 | $value = int($2); | |
178a63be DM |
2830 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
2831 | $opt = lc($1); | |
2832 | $value = $2 ? lc($3) : ''; | |
72f63fde | 2833 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
2834 | $opt = lc($1); |
2835 | $value = uc($3); | |
b47ecc88 AD |
2836 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
2837 | $opt = lc($1); | |
2838 | $value = $2; | |
c5e8b008 AD |
2839 | } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) { |
2840 | $opt = lc($1); | |
2841 | $value = $2; | |
2842 | verify_ethertype($_) foreach split(/\s*,\s*/, $value); | |
9c6b6efd | 2843 | } else { |
85c6eaed DM |
2844 | die "can't parse option '$line'\n" |
2845 | } | |
2846 | ||
2847 | return ($opt, $value); | |
2848 | } | |
2849 | ||
2d404ffc DM |
2850 | sub parse_hostfw_option { |
2851 | my ($line) = @_; | |
2852 | ||
2853 | my ($opt, $value); | |
2854 | ||
2855 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
2856 | ||
ac5dd88e | 2857 | if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood):\s*(0|1)\s*$/i) { |
2d404ffc DM |
2858 | $opt = lc($1); |
2859 | $value = int($2); | |
178a63be | 2860 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
2861 | $opt = lc($1); |
2862 | $value = $2 ? lc($3) : ''; | |
ac5dd88e | 2863 | } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established|nf_conntrack_tcp_timeout_syn_recv|protection_synflood_rate|protection_synflood_burst|protection_limit):\s*(\d+)\s*$/i) { |
490cdead DM |
2864 | $opt = lc($1); |
2865 | $value = int($2); | |
2d404ffc | 2866 | } else { |
2d404ffc DM |
2867 | die "can't parse option '$line'\n" |
2868 | } | |
2869 | ||
2870 | return ($opt, $value); | |
2871 | } | |
2872 | ||
c6f5cc88 DM |
2873 | sub parse_clusterfw_option { |
2874 | my ($line) = @_; | |
2875 | ||
2876 | my ($opt, $value); | |
2877 | ||
72d055fc | 2878 | if ($line =~ m/^(enable):\s*(\d+)\s*$/i) { |
c6f5cc88 DM |
2879 | $opt = lc($1); |
2880 | $value = int($2); | |
72d055fc AG |
2881 | if (($value > 1) && ((time() - $value) > 60)) { |
2882 | $value = 0 | |
2883 | } | |
2549e7ef | 2884 | } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) { |
84025e99 SI |
2885 | $opt = lc($1); |
2886 | $value = int($2); | |
63324b09 DM |
2887 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2888 | $opt = lc($1); | |
2889 | $value = uc($3); | |
cc37e000 TL |
2890 | } elsif ($line =~ m/^(log_ratelimit):\s*(\S+)\s*$/) { |
2891 | $opt = lc($1); | |
2892 | $value = $2; | |
c6f5cc88 | 2893 | } else { |
c6f5cc88 DM |
2894 | die "can't parse option '$line'\n" |
2895 | } | |
2896 | ||
2897 | return ($opt, $value); | |
2898 | } | |
2899 | ||
6c221576 DM |
2900 | sub resolve_alias { |
2901 | my ($clusterfw_conf, $fw_conf, $cidr) = @_; | |
2902 | ||
6d959e3f | 2903 | my $alias = lc($cidr); |
04f5088f | 2904 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
6d959e3f | 2905 | $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf; |
6c221576 | 2906 | |
6d959e3f DM |
2907 | die "no such alias '$cidr'\n" if !$e;; |
2908 | ||
2909 | return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr}; | |
6c221576 DM |
2910 | } |
2911 | ||
ae029a88 DM |
2912 | sub parse_ip_or_cidr { |
2913 | my ($cidr) = @_; | |
2914 | ||
2915 | my $ipversion; | |
75a12a9d | 2916 | |
ae029a88 DM |
2917 | if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) { |
2918 | $cidr =~ s|/128$||; | |
2919 | $ipversion = 6; | |
2920 | } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) { | |
2921 | $cidr =~ s|/32$||; | |
2922 | $ipversion = 4; | |
2923 | } else { | |
2924 | die "value does not look like a valid IP address or CIDR network\n"; | |
2925 | } | |
2926 | ||
2927 | return wantarray ? ($cidr, $ipversion) : $cidr; | |
2928 | } | |
2929 | ||
e76a9f53 | 2930 | sub parse_alias { |
92e1209b AD |
2931 | my ($line) = @_; |
2932 | ||
81d574a7 DM |
2933 | # we can add single line comments to the end of the line |
2934 | my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//; | |
2935 | ||
92e1209b | 2936 | if ($line =~ m/^(\S+)\s(\S+)$/) { |
81d574a7 | 2937 | my ($name, $cidr) = ($1, $2); |
ae029a88 DM |
2938 | my $ipversion; |
2939 | ||
2940 | ($cidr, $ipversion) = parse_ip_or_cidr($cidr); | |
2941 | ||
81d574a7 DM |
2942 | my $data = { |
2943 | name => $name, | |
2944 | cidr => $cidr, | |
70e524eb | 2945 | ipversion => $ipversion, |
81d574a7 DM |
2946 | }; |
2947 | $data->{comment} = $comment if $comment; | |
2948 | return $data; | |
92e1209b AD |
2949 | } |
2950 | ||
81d574a7 | 2951 | return undef; |
92e1209b AD |
2952 | } |
2953 | ||
e5cd1ee0 | 2954 | sub generic_fw_config_parser { |
585ede43 TL |
2955 | my ($filename, $cluster_conf, $empty_conf, $rule_env) = @_; |
2956 | ||
51bae274 DM |
2957 | my $section; |
2958 | my $group; | |
2959 | ||
1210ae94 | 2960 | my $res = $empty_conf; |
6158271d | 2961 | |
0dbef530 TL |
2962 | my $raw; |
2963 | if ($filename =~ m!^/etc/pve/(.*)$!) { | |
2964 | $raw = PVE::Cluster::get_config($1); | |
2965 | } else { | |
2966 | $raw = eval { PVE::Tools::file_get_contents($filename) }; # ignore errors | |
2967 | } | |
2968 | return {} if !$raw; | |
2969 | ||
644b5fc9 FG |
2970 | my $curr_group_keys = {}; |
2971 | ||
0dbef530 TL |
2972 | my $linenr = 0; |
2973 | while ($raw =~ /^\h*(.*?)\h*$/gm) { | |
2974 | my $line = $1; | |
2975 | $linenr++; | |
51bae274 DM |
2976 | next if $line =~ m/^#/; |
2977 | next if $line =~ m/^\s*$/; | |
c8c534f7 DM |
2978 | chomp $line; |
2979 | ||
961b4928 DM |
2980 | my $prefix = "$filename (line $linenr)"; |
2981 | ||
1210ae94 | 2982 | if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) { |
c6f5cc88 DM |
2983 | $section = 'options'; |
2984 | next; | |
2985 | } | |
2986 | ||
1210ae94 | 2987 | if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) { |
92e1209b AD |
2988 | $section = 'aliases'; |
2989 | next; | |
2990 | } | |
2991 | ||
1210ae94 | 2992 | if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
c6f5cc88 | 2993 | $section = 'groups'; |
92e976b3 | 2994 | $group = lc($1); |
0d22acb3 | 2995 | my $comment = $2; |
351052d1 DM |
2996 | eval { |
2997 | die "security group name too long\n" if length($group) > $max_group_name_length; | |
2998 | die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/; | |
2999 | }; | |
3000 | if (my $err = $@) { | |
3001 | ($section, $group, $comment) = undef; | |
3002 | warn "$prefix: $err"; | |
3003 | next; | |
3004 | } | |
75a12a9d | 3005 | |
c85c87f9 | 3006 | $res->{$section}->{$group} = []; |
649e4d57 DM |
3007 | $res->{group_comments}->{$group} = decode('utf8', $comment) |
3008 | if $comment; | |
51bae274 DM |
3009 | next; |
3010 | } | |
34cdedfa | 3011 | |
1210ae94 | 3012 | if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) { |
c6f5cc88 DM |
3013 | $section = 'rules'; |
3014 | next; | |
3015 | } | |
cbb5d6f3 | 3016 | |
1210ae94 | 3017 | if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
34cdedfa AD |
3018 | $section = 'ipset'; |
3019 | $group = lc($1); | |
d72c631c | 3020 | my $comment = $2; |
75a12a9d | 3021 | eval { |
351052d1 DM |
3022 | die "ipset name too long\n" if length($group) > $max_ipset_name_length; |
3023 | die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/; | |
3024 | }; | |
3025 | if (my $err = $@) { | |
3026 | ($section, $group, $comment) = undef; | |
3027 | warn "$prefix: $err"; | |
3028 | next; | |
3029 | } | |
3030 | ||
c85c87f9 | 3031 | $res->{$section}->{$group} = []; |
644b5fc9 FG |
3032 | $curr_group_keys = {}; |
3033 | ||
e34d0e58 | 3034 | $res->{ipset_comments}->{$group} = decode('utf8', $comment) |
649e4d57 | 3035 | if $comment; |
34cdedfa AD |
3036 | next; |
3037 | } | |
3038 | ||
c6f5cc88 | 3039 | if (!$section) { |
cbb5d6f3 | 3040 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
3041 | next; |
3042 | } | |
3043 | ||
c6f5cc88 DM |
3044 | if ($section eq 'options') { |
3045 | eval { | |
1210ae94 DM |
3046 | my ($opt, $value); |
3047 | if ($rule_env eq 'cluster') { | |
3048 | ($opt, $value) = parse_clusterfw_option($line); | |
3049 | } elsif ($rule_env eq 'host') { | |
3050 | ($opt, $value) = parse_hostfw_option($line); | |
3051 | } else { | |
3052 | ($opt, $value) = parse_vmfw_option($line); | |
3053 | } | |
c6f5cc88 DM |
3054 | $res->{options}->{$opt} = $value; |
3055 | }; | |
3056 | warn "$prefix: $@" if $@; | |
92e1209b AD |
3057 | } elsif ($section eq 'aliases') { |
3058 | eval { | |
e76a9f53 | 3059 | my $data = parse_alias($line); |
81d574a7 | 3060 | $res->{aliases}->{lc($data->{name})} = $data; |
92e1209b AD |
3061 | }; |
3062 | warn "$prefix: $@" if $@; | |
c6f5cc88 DM |
3063 | } elsif ($section eq 'rules') { |
3064 | my $rule; | |
40af93c4 | 3065 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env); }; |
c6f5cc88 DM |
3066 | if (my $err = $@) { |
3067 | warn "$prefix: $err"; | |
3068 | next; | |
3069 | } | |
3070 | push @{$res->{$section}}, $rule; | |
3071 | } elsif ($section eq 'groups') { | |
34cdedfa | 3072 | my $rule; |
40af93c4 | 3073 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group'); }; |
34cdedfa AD |
3074 | if (my $err = $@) { |
3075 | warn "$prefix: $err"; | |
3076 | next; | |
3077 | } | |
3f95d14a | 3078 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a | 3079 | } elsif ($section eq 'ipset') { |
9d6f90e6 DM |
3080 | # we can add single line comments to the end of the rule |
3081 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; | |
3082 | ||
30f1b100 | 3083 | $line =~ m/^(\!)?\s*(\S+)\s*$/; |
2a052ee3 | 3084 | my $nomatch = $1; |
9d6f90e6 | 3085 | my $cidr = $2; |
d46b1ef6 DM |
3086 | my $errors; |
3087 | ||
3088 | if ($nomatch && !$feature_ipset_nomatch) { | |
3089 | $errors->{nomatch} = "nomatch not supported by kernel"; | |
3090 | } | |
2a052ee3 | 3091 | |
75a12a9d | 3092 | eval { |
4803b296 DM |
3093 | if ($cidr =~ m/^${ip_alias_pattern}$/) { |
3094 | resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists | |
3095 | } else { | |
ae029a88 | 3096 | $cidr = parse_ip_or_cidr($cidr); |
92e1209b | 3097 | } |
644b5fc9 FG |
3098 | die "duplicate ipset entry for '$cidr'\n" |
3099 | if defined($curr_group_keys->{$cidr}); | |
4803b296 DM |
3100 | }; |
3101 | if (my $err = $@) { | |
c8c534f7 | 3102 | chomp $err; |
d46b1ef6 | 3103 | $errors->{cidr} = $err; |
2a052ee3 | 3104 | } |
2a052ee3 | 3105 | |
b14db52f WB |
3106 | if ($cidr =~ m!/0+$!) { |
3107 | $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n"; | |
3108 | } | |
3109 | ||
e34d0e58 | 3110 | my $entry = { cidr => $cidr }; |
9d6f90e6 DM |
3111 | $entry->{nomatch} = 1 if $nomatch; |
3112 | $entry->{comment} = $comment if $comment; | |
d46b1ef6 | 3113 | $entry->{errors} = $errors if $errors; |
e34d0e58 | 3114 | |
c8c534f7 | 3115 | if ($verbose && $errors) { |
9a3061c7 | 3116 | warn "$prefix - errors in ipset '$group': $line\n"; |
c8c534f7 DM |
3117 | foreach my $p (keys %{$errors}) { |
3118 | warn " $p: $errors->{$p}\n"; | |
3119 | } | |
3120 | } | |
3121 | ||
9d6f90e6 | 3122 | push @{$res->{$section}->{$group}}, $entry; |
644b5fc9 | 3123 | $curr_group_keys->{$cidr} = 1; |
1210ae94 DM |
3124 | } else { |
3125 | warn "$prefix: skip line - unknown section\n"; | |
3126 | next; | |
51bae274 | 3127 | } |
5e1267a5 DM |
3128 | } |
3129 | ||
3130 | return $res; | |
3131 | } | |
3132 | ||
fab41100 FG |
3133 | # this is only used to prevent concurrent runs of rule compilation/application |
3134 | # see lock_*_conf for cfs locks protectiong config modification | |
06320eb0 DM |
3135 | sub run_locked { |
3136 | my ($code, @param) = @_; | |
3137 | ||
3138 | my $timeout = 10; | |
3139 | ||
3140 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
3141 | ||
3142 | die $@ if $@; | |
3143 | ||
3144 | return $res; | |
3145 | } | |
3146 | ||
5e1267a5 DM |
3147 | sub read_local_vm_config { |
3148 | ||
5e1267a5 | 3149 | my $qemu = {}; |
3b4882dc | 3150 | my $lxc = {}; |
5e1267a5 | 3151 | |
fdefeeab | 3152 | my $vmdata = { qemu => $qemu, lxc => $lxc }; |
5e1267a5 | 3153 | |
c8301d63 DM |
3154 | my $vmlist = PVE::Cluster::get_vmlist(); |
3155 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
3156 | my $ids = $vmlist->{ids}; | |
3157 | ||
3158 | foreach my $vmid (keys %$ids) { | |
3159 | next if !$vmid; # skip VE0 | |
3160 | my $d = $ids->{$vmid}; | |
3161 | next if !$d->{node} || $d->{node} ne $nodename; | |
3162 | next if !$d->{type}; | |
fdefeeab | 3163 | if ($d->{type} eq 'qemu') { |
d9fee004 | 3164 | if ($have_qemu_server) { |
b5a16dd3 | 3165 | my $cfspath = PVE::QemuConfig->cfs_config_path($vmid); |
d9fee004 DM |
3166 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { |
3167 | $qemu->{$vmid} = $conf; | |
3168 | } | |
c8301d63 | 3169 | } |
3b4882dc | 3170 | } elsif ($d->{type} eq 'lxc') { |
4a626429 TL |
3171 | if ($have_lxc) { |
3172 | my $cfspath = PVE::LXC::Config->cfs_config_path($vmid); | |
3173 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
3174 | $lxc->{$vmid} = $conf; | |
3175 | } | |
3176 | } | |
3177 | } | |
5e1267a5 | 3178 | } |
d9fee004 | 3179 | |
5e1267a5 DM |
3180 | return $vmdata; |
3181 | }; | |
3182 | ||
fab41100 FG |
3183 | sub lock_vmfw_conf { |
3184 | my ($vmid, $timeout, $code, @param) = @_; | |
3185 | ||
3186 | die "can't lock VM firewall config for undefined VMID\n" | |
3187 | if !defined($vmid); | |
3188 | ||
3189 | my $res = PVE::Cluster::cfs_lock_firewall("vm-$vmid", $timeout, $code, @param); | |
3190 | die $@ if $@; | |
3191 | ||
3192 | return $res; | |
3193 | } | |
3194 | ||
e7b35711 | 3195 | sub load_vmfw_conf { |
40af93c4 | 3196 | my ($cluster_conf, $rule_env, $vmid, $dir) = @_; |
e7b35711 | 3197 | |
21053409 | 3198 | $dir = $pvefw_conf_dir if !defined($dir); |
8aef5177 | 3199 | my $filename = "$dir/$vmid.fw"; |
585ede43 TL |
3200 | |
3201 | my $empty_conf = { | |
3202 | rules => [], | |
3203 | options => {}, | |
3204 | aliases => {}, | |
3205 | ipset => {} , | |
3206 | ipset_comments => {}, | |
3207 | }; | |
3208 | ||
3209 | my $vmfw_conf = generic_fw_config_parser($filename, $cluster_conf, $empty_conf, $rule_env); | |
3210 | $vmfw_conf->{vmid} = $vmid; | |
e7b35711 DM |
3211 | |
3212 | return $vmfw_conf; | |
3213 | } | |
3214 | ||
464f933e | 3215 | my $format_rules = sub { |
dba740a9 | 3216 | my ($rules, $allow_iface) = @_; |
464f933e DM |
3217 | |
3218 | my $raw = ''; | |
3219 | ||
3220 | foreach my $rule (@$rules) { | |
c14dacdf | 3221 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') { |
464f933e DM |
3222 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; |
3223 | $raw .= uc($rule->{type}); | |
7ca36671 DM |
3224 | if ($rule->{macro}) { |
3225 | $raw .= " $rule->{macro}($rule->{action})"; | |
3226 | } else { | |
3227 | $raw .= " " . $rule->{action}; | |
3228 | } | |
dba740a9 DM |
3229 | if ($allow_iface && $rule->{iface}) { |
3230 | $raw .= " -i $rule->{iface}"; | |
3231 | } | |
c14dacdf DM |
3232 | |
3233 | if ($rule->{type} ne 'group') { | |
dba740a9 DM |
3234 | $raw .= " -source $rule->{source}" if $rule->{source}; |
3235 | $raw .= " -dest $rule->{dest}" if $rule->{dest}; | |
3236 | $raw .= " -p $rule->{proto}" if $rule->{proto}; | |
3237 | $raw .= " -dport $rule->{dport}" if $rule->{dport}; | |
3238 | $raw .= " -sport $rule->{sport}" if $rule->{sport}; | |
3489f8a2 | 3239 | $raw .= " -log $rule->{log}" if $rule->{log}; |
72194c7c | 3240 | $raw .= " -icmp-type $rule->{'icmp-type'}" if defined($rule->{'icmp-type'}) && $rule->{'icmp-type'} ne ''; |
c14dacdf DM |
3241 | } |
3242 | ||
cbb5d6f3 | 3243 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
3244 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
3245 | $raw .= "\n"; | |
3246 | } else { | |
c14dacdf | 3247 | die "unknown rule type '$rule->{type}'"; |
464f933e DM |
3248 | } |
3249 | } | |
3250 | ||
3251 | return $raw; | |
3252 | }; | |
3253 | ||
3254 | my $format_options = sub { | |
68c90e21 DM |
3255 | my ($options) = @_; |
3256 | ||
3257 | my $raw = ''; | |
464f933e DM |
3258 | |
3259 | $raw .= "[OPTIONS]\n\n"; | |
3260 | foreach my $opt (keys %$options) { | |
3261 | $raw .= "$opt: $options->{$opt}\n"; | |
3262 | } | |
3263 | $raw .= "\n"; | |
68c90e21 DM |
3264 | |
3265 | return $raw; | |
464f933e DM |
3266 | }; |
3267 | ||
0d5f0a0f DM |
3268 | my $format_aliases = sub { |
3269 | my ($aliases) = @_; | |
3270 | ||
3271 | my $raw = ''; | |
3272 | ||
3273 | $raw .= "[ALIASES]\n\n"; | |
3274 | foreach my $k (keys %$aliases) { | |
81d574a7 DM |
3275 | my $e = $aliases->{$k}; |
3276 | $raw .= "$e->{name} $e->{cidr}"; | |
3277 | $raw .= " # " . encode('utf8', $e->{comment}) | |
3278 | if $e->{comment} && $e->{comment} !~ m/^\s*$/; | |
3279 | $raw .= "\n"; | |
0d5f0a0f DM |
3280 | } |
3281 | $raw .= "\n"; | |
3282 | ||
3283 | return $raw; | |
3284 | }; | |
3285 | ||
1210ae94 DM |
3286 | my $format_ipsets = sub { |
3287 | my ($fw_conf) = @_; | |
75a12a9d | 3288 | |
9d6f90e6 DM |
3289 | my $raw = ''; |
3290 | ||
1210ae94 DM |
3291 | foreach my $ipset (sort keys %{$fw_conf->{ipset}}) { |
3292 | if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) { | |
3293 | my $utf8comment = encode('utf8', $comment); | |
3294 | $raw .= "[IPSET $ipset] # $utf8comment\n\n"; | |
3295 | } else { | |
3296 | $raw .= "[IPSET $ipset]\n\n"; | |
3297 | } | |
3298 | my $options = $fw_conf->{ipset}->{$ipset}; | |
6e299ae3 | 3299 | |
1210ae94 DM |
3300 | my $nethash = {}; |
3301 | foreach my $entry (@$options) { | |
644b5fc9 FG |
3302 | my $cidr = $entry->{cidr}; |
3303 | if (defined($nethash->{$cidr})) { | |
3304 | warn "ignoring duplicate ipset entry '$cidr'\n"; | |
3305 | next; | |
3306 | } | |
3307 | ||
3308 | $nethash->{$cidr} = $entry; | |
1210ae94 DM |
3309 | } |
3310 | ||
3311 | foreach my $cidr (sort keys %$nethash) { | |
3312 | my $entry = $nethash->{$cidr}; | |
3313 | my $line = $entry->{nomatch} ? '!' : ''; | |
3314 | $line .= $entry->{cidr}; | |
3315 | $line .= " # " . encode('utf8', $entry->{comment}) | |
3316 | if $entry->{comment} && $entry->{comment} !~ m/^\s*$/; | |
3317 | $raw .= "$line\n"; | |
3318 | } | |
3319 | ||
3320 | $raw .= "\n"; | |
9d6f90e6 | 3321 | } |
e34d0e58 | 3322 | |
9d6f90e6 DM |
3323 | return $raw; |
3324 | }; | |
3325 | ||
464f933e DM |
3326 | sub save_vmfw_conf { |
3327 | my ($vmid, $vmfw_conf) = @_; | |
3328 | ||
3329 | my $raw = ''; | |
3330 | ||
3331 | my $options = $vmfw_conf->{options}; | |
89ea63c8 | 3332 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 3333 | |
e76a9f53 | 3334 | my $aliases = $vmfw_conf->{aliases}; |
89ea63c8 | 3335 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e76a9f53 | 3336 | |
89ea63c8 | 3337 | $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset}; |
1210ae94 | 3338 | |
8824b2f0 | 3339 | my $rules = $vmfw_conf->{rules} || []; |
89ea63c8 | 3340 | if ($rules && scalar(@$rules)) { |
464f933e DM |
3341 | $raw .= "[RULES]\n\n"; |
3342 | $raw .= &$format_rules($rules, 1); | |
3343 | $raw .= "\n"; | |
3344 | } | |
3345 | ||
21053409 | 3346 | my $filename = "$pvefw_conf_dir/$vmid.fw"; |
c32e04e6 FG |
3347 | if ($raw) { |
3348 | mkdir $pvefw_conf_dir; | |
3349 | PVE::Tools::file_set_contents($filename, $raw); | |
3350 | } else { | |
3351 | unlink $filename; | |
3352 | } | |
464f933e DM |
3353 | } |
3354 | ||
edee9035 AG |
3355 | sub remove_vmfw_conf { |
3356 | my ($vmid) = @_; | |
3357 | ||
3358 | my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw"; | |
3359 | ||
3360 | unlink $vmfw_conffile; | |
3361 | } | |
3362 | ||
5471ff7c AG |
3363 | sub clone_vmfw_conf { |
3364 | my ($vmid, $newid) = @_; | |
3365 | ||
3366 | my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw"; | |
3367 | my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw"; | |
3368 | ||
9388a8f4 FG |
3369 | lock_vmfw_conf($newid, 10, sub { |
3370 | if (-f $clonevm_conffile) { | |
3371 | unlink $clonevm_conffile; | |
3372 | } | |
3373 | if (-f $sourcevm_conffile) { | |
3374 | my $data = PVE::Tools::file_get_contents($sourcevm_conffile); | |
3375 | PVE::Tools::file_set_contents($clonevm_conffile, $data); | |
3376 | } | |
3377 | }); | |
5471ff7c AG |
3378 | } |
3379 | ||
6fc63ffd | 3380 | sub read_vm_firewall_configs { |
40af93c4 | 3381 | my ($cluster_conf, $vmdata, $dir) = @_; |
8aef5177 | 3382 | |
6fc63ffd | 3383 | my $vmfw_configs = {}; |
c8301d63 | 3384 | |
b6b8e6ad | 3385 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
40af93c4 | 3386 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir); |
75a12a9d | 3387 | next if !$vmfw_conf->{options}; # skip if file does not exist |
b6b8e6ad DM |
3388 | $vmfw_configs->{$vmid} = $vmfw_conf; |
3389 | } | |
3b4882dc | 3390 | foreach my $vmid (keys %{$vmdata->{lxc}}) { |
40af93c4 | 3391 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir); |
75a12a9d | 3392 | next if !$vmfw_conf->{options}; # skip if file does not exist |
3b4882dc AG |
3393 | $vmfw_configs->{$vmid} = $vmfw_conf; |
3394 | } | |
5e1267a5 | 3395 | |
6fc63ffd | 3396 | return $vmfw_configs; |
5e1267a5 DM |
3397 | } |
3398 | ||
2d404ffc DM |
3399 | sub get_option_log_level { |
3400 | my ($options, $k) = @_; | |
3401 | ||
3402 | my $v = $options->{$k}; | |
178a63be | 3403 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
3404 | |
3405 | return undef if $v eq '' || $v eq 'nolog'; | |
3406 | ||
3489f8a2 | 3407 | return $v if defined($log_level_hash->{$v}); |
2d404ffc DM |
3408 | |
3409 | warn "unknown log level ($k = '$v')\n"; | |
3410 | ||
3411 | return undef; | |
3412 | } | |
3413 | ||
d8f2505e | 3414 | sub generate_std_chains { |
db8a955f DM |
3415 | my ($ruleset, $options, $ipversion) = @_; |
3416 | ||
3417 | my $std_chains = $pve_std_chains->{$ipversion} || die "internal error"; | |
cbb5d6f3 | 3418 | |
2d404ffc | 3419 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
044409e5 TW |
3420 | my $chain = 'PVEFW-smurflog'; |
3421 | if ( $std_chains->{$chain} ) { | |
3422 | foreach my $r (@{$std_chains->{$chain}}) { | |
3423 | $r->{log} = $loglevel; | |
3424 | } | |
db8a955f | 3425 | } |
2d404ffc DM |
3426 | |
3427 | # same as shorewall logflags action. | |
3428 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde | 3429 | $chain = 'PVEFW-logflags'; |
044409e5 TW |
3430 | if ( $std_chains->{$chain} ) { |
3431 | foreach my $r (@{$std_chains->{$chain}}) { | |
3432 | $r->{log} = $loglevel; | |
3433 | } | |
3434 | } | |
d8f2505e | 3435 | |
db8a955f | 3436 | foreach my $chain (keys %$std_chains) { |
d8f2505e | 3437 | ruleset_create_chain($ruleset, $chain); |
db8a955f | 3438 | foreach my $rule (@{$std_chains->{$chain}}) { |
d8f2505e | 3439 | if (ref($rule)) { |
3489f8a2 | 3440 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0); |
d8f2505e | 3441 | } else { |
044409e5 | 3442 | die "rule $rule as string - should not happen"; |
d8f2505e DM |
3443 | } |
3444 | } | |
3445 | } | |
3446 | } | |
3447 | ||
34cdedfa | 3448 | sub generate_ipset_chains { |
74601077 | 3449 | my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_; |
34cdedfa | 3450 | |
74601077 | 3451 | foreach my $ipset (keys %{$ipsets}) { |
34cdedfa | 3452 | |
74601077 | 3453 | my $options = $ipsets->{$ipset}; |
34cdedfa | 3454 | |
ebf72e49 WB |
3455 | if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) { |
3456 | if (my $ips = $device_ips->{$1}) { | |
3457 | $options = [@$options, @$ips]; | |
3458 | } | |
3459 | } | |
3460 | ||
88c26d5e DM |
3461 | # remove duplicates |
3462 | my $nethash = {}; | |
3463 | foreach my $entry (@$options) { | |
3464 | next if $entry->{errors}; # skip entries with errors | |
3465 | eval { | |
3466 | my ($cidr, $ver); | |
3467 | if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) { | |
3468 | ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr}); | |
3469 | } else { | |
3470 | ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr}); | |
3471 | } | |
3472 | #http://backreference.org/2013/03/01/ipv6-address-normalization/ | |
3473 | if ($ver == 6) { | |
e0a9139f WB |
3474 | # ip_compress_address takes an address only, no CIDR |
3475 | my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@); | |
3476 | $cidr = lc(Net::IP::ip_compress_address($addr, 6)); | |
3477 | $cidr .= $prefix_len if defined($prefix_len); | |
88c26d5e DM |
3478 | $cidr =~ s|/128$||; |
3479 | } else { | |
3480 | $cidr =~ s|/32$||; | |
3481 | } | |
34cdedfa | 3482 | |
88c26d5e DM |
3483 | $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} }; |
3484 | }; | |
3485 | warn $@ if $@; | |
3486 | } | |
6d959e3f | 3487 | |
88c26d5e DM |
3488 | foreach my $ipversion (4, 6) { |
3489 | my $data = $nethash->{$ipversion}; | |
30f1b100 | 3490 | |
88c26d5e | 3491 | my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion); |
6d959e3f | 3492 | |
88c26d5e DM |
3493 | my $hashsize = scalar(@$options); |
3494 | if ($hashsize <= 64) { | |
3495 | $hashsize = 64; | |
3496 | } else { | |
3497 | $hashsize = round_powerof2($hashsize); | |
3498 | } | |
6d959e3f | 3499 | |
1bf4d1d6 TL |
3500 | my $bucketsize = 12; # lower than the default of 14, faster but slightly more memory use |
3501 | ||
88c26d5e | 3502 | my $family = $ipversion == "6" ? "inet6" : "inet"; |
30f1b100 | 3503 | |
1bf4d1d6 TL |
3504 | $ipset_ruleset->{$name} = [ |
3505 | "create $name hash:net family $family hashsize $hashsize maxelem $hashsize bucketsize $bucketsize" | |
3506 | ]; | |
6d959e3f | 3507 | |
88c26d5e DM |
3508 | foreach my $cidr (sort keys %$data) { |
3509 | my $entry = $data->{$cidr}; | |
6d959e3f | 3510 | |
88c26d5e DM |
3511 | my $cmd = "add $name $cidr"; |
3512 | if ($entry->{nomatch}) { | |
3513 | if ($feature_ipset_nomatch) { | |
3514 | push @{$ipset_ruleset->{$name}}, "$cmd nomatch"; | |
3515 | } else { | |
3516 | warn "ignore !$cidr - nomatch not supported by kernel\n"; | |
3517 | } | |
6d959e3f | 3518 | } else { |
88c26d5e | 3519 | push @{$ipset_ruleset->{$name}}, $cmd; |
6d959e3f | 3520 | } |
9d6f90e6 | 3521 | } |
9d6f90e6 | 3522 | } |
34cdedfa | 3523 | } |
2a052ee3 AD |
3524 | } |
3525 | ||
3526 | sub round_powerof2 { | |
dd7a13fd | 3527 | my ($int) = @_; |
2a052ee3 | 3528 | |
dd7a13fd DM |
3529 | $int--; |
3530 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
3531 | return ++$int; | |
34cdedfa AD |
3532 | } |
3533 | ||
cc37e000 TL |
3534 | my $set_global_log_ratelimit = sub { |
3535 | my $cluster_opts = shift; | |
3536 | ||
3537 | $global_log_ratelimit = '--limit 1/sec'; | |
3538 | if (defined(my $log_rlimit = $cluster_opts->{log_ratelimit})) { | |
3539 | my $ll_format = $cluster_option_properties->{log_ratelimit}->{format}; | |
3540 | my $limit = PVE::JSONSchema::parse_property_string($ll_format, $log_rlimit); | |
3541 | ||
3542 | if ($limit->{enable}) { | |
3543 | if (my $rate = $limit->{rate}) { | |
3544 | $global_log_ratelimit = "--limit $rate"; | |
3545 | } | |
3546 | if (my $burst = $limit->{burst}) { | |
3547 | $global_log_ratelimit .= " --limit-burst $burst"; | |
3548 | } | |
3549 | } else { | |
3550 | $global_log_ratelimit = undef; | |
3551 | } | |
3552 | } | |
3553 | }; | |
3554 | ||
fab41100 FG |
3555 | sub lock_clusterfw_conf { |
3556 | my ($timeout, $code, @param) = @_; | |
3557 | ||
3558 | my $res = PVE::Cluster::cfs_lock_firewall("cluster", $timeout, $code, @param); | |
3559 | die $@ if $@; | |
3560 | ||
3561 | return $res; | |
3562 | } | |
3563 | ||
fca39c2c | 3564 | sub load_clusterfw_conf { |
40af93c4 | 3565 | my ($filename) = @_; |
8aef5177 DM |
3566 | |
3567 | $filename = $clusterfw_conf_filename if !defined($filename); | |
585ede43 TL |
3568 | my $empty_conf = { |
3569 | rules => [], | |
3570 | options => {}, | |
3571 | aliases => {}, | |
3572 | groups => {}, | |
3573 | group_comments => {}, | |
3574 | ipset => {} , | |
3575 | ipset_comments => {}, | |
3576 | }; | |
530c005e | 3577 | |
585ede43 TL |
3578 | my $cluster_conf = generic_fw_config_parser($filename, $empty_conf, $empty_conf, 'cluster'); |
3579 | $set_global_log_ratelimit->($cluster_conf->{options}); | |
5e1267a5 | 3580 | |
fca39c2c | 3581 | return $cluster_conf; |
e5d76bde DM |
3582 | } |
3583 | ||
fca39c2c DM |
3584 | sub save_clusterfw_conf { |
3585 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
3586 | |
3587 | my $raw = ''; | |
9c7e0858 | 3588 | |
c6f5cc88 | 3589 | my $options = $cluster_conf->{options}; |
89ea63c8 | 3590 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
9c7e0858 | 3591 | |
0d5f0a0f | 3592 | my $aliases = $cluster_conf->{aliases}; |
89ea63c8 | 3593 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e34d0e58 | 3594 | |
89ea63c8 | 3595 | $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset}; |
75a12a9d | 3596 | |
c6f5cc88 | 3597 | my $rules = $cluster_conf->{rules}; |
89ea63c8 | 3598 | if ($rules && scalar(@$rules)) { |
c6f5cc88 | 3599 | $raw .= "[RULES]\n\n"; |
63c91681 | 3600 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
3601 | $raw .= "\n"; |
3602 | } | |
3603 | ||
89ea63c8 DM |
3604 | if ($cluster_conf->{groups}) { |
3605 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
3606 | my $rules = $cluster_conf->{groups}->{$group}; | |
3607 | if (my $comment = $cluster_conf->{group_comments}->{$group}) { | |
3608 | my $utf8comment = encode('utf8', $comment); | |
3609 | $raw .= "[group $group] # $utf8comment\n\n"; | |
3610 | } else { | |
3611 | $raw .= "[group $group]\n\n"; | |
3612 | } | |
0d22acb3 | 3613 | |
89ea63c8 DM |
3614 | $raw .= &$format_rules($rules, 0); |
3615 | $raw .= "\n"; | |
3616 | } | |
9c7e0858 DM |
3617 | } |
3618 | ||
c32e04e6 FG |
3619 | if ($raw) { |
3620 | mkdir $pvefw_conf_dir; | |
3621 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); | |
3622 | } else { | |
3623 | unlink $clusterfw_conf_filename; | |
3624 | } | |
9c7e0858 DM |
3625 | } |
3626 | ||
fab41100 FG |
3627 | sub lock_hostfw_conf { |
3628 | my ($timeout, $code, @param) = @_; | |
3629 | ||
3630 | my $res = PVE::Cluster::cfs_lock_firewall("host-$nodename", $timeout, $code, @param); | |
3631 | die $@ if $@; | |
3632 | ||
3633 | return $res; | |
3634 | } | |
3635 | ||
8b27beb9 | 3636 | sub load_hostfw_conf { |
40af93c4 | 3637 | my ($cluster_conf, $filename) = @_; |
8aef5177 DM |
3638 | |
3639 | $filename = $hostfw_conf_filename if !defined($filename); | |
8b27beb9 | 3640 | |
585ede43 TL |
3641 | my $empty_conf = { rules => [], options => {}}; |
3642 | return generic_fw_config_parser($filename, $cluster_conf, $empty_conf, 'host'); | |
8b27beb9 DM |
3643 | } |
3644 | ||
63c91681 DM |
3645 | sub save_hostfw_conf { |
3646 | my ($hostfw_conf) = @_; | |
3647 | ||
3648 | my $raw = ''; | |
3649 | ||
3650 | my $options = $hostfw_conf->{options}; | |
89ea63c8 | 3651 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 3652 | |
63c91681 | 3653 | my $rules = $hostfw_conf->{rules}; |
89ea63c8 | 3654 | if ($rules && scalar(@$rules)) { |
63c91681 DM |
3655 | $raw .= "[RULES]\n\n"; |
3656 | $raw .= &$format_rules($rules, 1); | |
3657 | $raw .= "\n"; | |
3658 | } | |
3659 | ||
c32e04e6 FG |
3660 | if ($raw) { |
3661 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
3662 | } else { | |
3663 | unlink $hostfw_conf_filename; | |
3664 | } | |
63c91681 DM |
3665 | } |
3666 | ||
e5d76bde | 3667 | sub compile { |
06208a01 | 3668 | my ($cluster_conf, $hostfw_conf, $vmdata, $corosync_conf) = @_; |
3dfa8a7f | 3669 | |
8aef5177 DM |
3670 | my $vmfw_configs; |
3671 | ||
cfd7cd9c TW |
3672 | # fixme: once we read standard chains from config this needs to be put in test/standard cases below |
3673 | $pve_std_chains = dclone($pve_std_chains_conf); | |
3674 | ||
8aef5177 DM |
3675 | if ($vmdata) { # test mode |
3676 | my $testdir = $vmdata->{testdir} || die "no test directory specified"; | |
3677 | my $filename = "$testdir/cluster.fw"; | |
40af93c4 | 3678 | $cluster_conf = load_clusterfw_conf($filename); |
8aef5177 DM |
3679 | |
3680 | $filename = "$testdir/host.fw"; | |
40af93c4 | 3681 | $hostfw_conf = load_hostfw_conf($cluster_conf, $filename); |
8aef5177 | 3682 | |
40af93c4 | 3683 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir); |
8aef5177 | 3684 | } else { # normal operation |
40af93c4 | 3685 | $cluster_conf = load_clusterfw_conf(undef) if !$cluster_conf; |
8aef5177 | 3686 | |
40af93c4 | 3687 | $hostfw_conf = load_hostfw_conf($cluster_conf, undef) if !$hostfw_conf; |
8aef5177 | 3688 | |
06208a01 | 3689 | # cfs_update is handled by daemon or API |
328d1e87 SR |
3690 | $corosync_conf = PVE::Cluster::cfs_read_file("corosync.conf") |
3691 | if !defined($corosync_conf) && PVE::Corosync::check_conf_exists(1); | |
06208a01 | 3692 | |
8aef5177 | 3693 | $vmdata = read_local_vm_config(); |
40af93c4 | 3694 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef); |
8aef5177 | 3695 | } |
3dfa8a7f | 3696 | |
84025e99 | 3697 | return ({},{},{},{}) if !$cluster_conf->{options}->{enable}; |
9268573a | 3698 | |
525778d7 DM |
3699 | my $localnet; |
3700 | if ($cluster_conf->{aliases}->{local_network}) { | |
3701 | $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; | |
3702 | } else { | |
afcd29b3 DM |
3703 | my $localnet_ver; |
3704 | ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8'); | |
3705 | ||
84025e99 | 3706 | $cluster_conf->{aliases}->{local_network} = { |
afcd29b3 | 3707 | name => 'local_network', cidr => $localnet, ipversion => $localnet_ver }; |
525778d7 DM |
3708 | } |
3709 | ||
3710 | push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet }; | |
bfc488f6 | 3711 | |
64e0adf4 AD |
3712 | my $ruleset = {}; |
3713 | my $rulesetv6 = {}; | |
3714 | $ruleset->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4); | |
3715 | $ruleset->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4); | |
3716 | $rulesetv6->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6); | |
3717 | $rulesetv6->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6); | |
40af93c4 | 3718 | my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata); |
147dd882 WB |
3719 | my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata); |
3720 | ||
c5e8b008 | 3721 | return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset); |
147dd882 WB |
3722 | } |
3723 | ||
64e0adf4 AD |
3724 | sub compile_iptables_raw { |
3725 | my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_; | |
3726 | ||
3727 | my $ruleset = {}; | |
3728 | ||
ac5dd88e AD |
3729 | my $hostfw_options = $hostfw_conf->{options} || {}; |
3730 | my $protection_synflood = $hostfw_options->{protection_synflood} || 0; | |
3731 | ||
3732 | if($protection_synflood) { | |
3733 | ||
3734 | my $protection_synflood_rate = $hostfw_options->{protection_synflood_rate} ? $hostfw_options->{protection_synflood_rate} : 200; | |
3735 | my $protection_synflood_burst = $hostfw_options->{protection_synflood_burst} ? $hostfw_options->{protection_synflood_burst} : 1000; | |
3736 | my $protection_synflood_limit = $hostfw_options->{protection_synflood_limit} ? $hostfw_options->{protection_synflood_limit} : 3000; | |
3737 | my $protection_synflood_expire = $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} ? $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} : 60; | |
3738 | $protection_synflood_expire = $protection_synflood_expire * 1000; | |
3739 | my $protection_synflood_mask = $ipversion == 4 ? 32 : 64; | |
3740 | ||
3741 | ruleset_create_chain($ruleset, "PVEFW-PREROUTING"); | |
3742 | ruleset_addrule($ruleset, "PVEFW-PREROUTING", "-p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m hashlimit --hashlimit-above $protection_synflood_rate/sec --hashlimit-burst $protection_synflood_burst --hashlimit-mode srcip --hashlimit-name syn --hashlimit-htable-size 2097152 --hashlimit-srcmask $protection_synflood_mask --hashlimit-htable-expire $protection_synflood_expire", "-j DROP"); | |
3743 | } | |
3744 | ||
64e0adf4 AD |
3745 | return $ruleset; |
3746 | } | |
3747 | ||
147dd882 | 3748 | sub compile_iptables_filter { |
06208a01 | 3749 | my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_; |
085fd492 | 3750 | |
3fa83edf DM |
3751 | my $ruleset = {}; |
3752 | ||
dec84fcd DM |
3753 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
3754 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 3755 | |
fadb13dd | 3756 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
e34d0e58 | 3757 | |
8b27beb9 | 3758 | my $hostfw_options = $hostfw_conf->{options} || {}; |
fadb13dd | 3759 | |
88733a74 AD |
3760 | # fixme: what log level should we use here? |
3761 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
3762 | ||
b409c8a8 TL |
3763 | my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0; |
3764 | ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT"); | |
88733a74 | 3765 | |
e2943485 | 3766 | ruleset_create_chain($ruleset, "PVEFW-FWBR-IN"); |
88c26d5e | 3767 | ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel); |
e2943485 | 3768 | |
1e9c5070 | 3769 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN"); |
e2943485 DM |
3770 | |
3771 | ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT"); | |
1e9c5070 | 3772 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT"); |
e2943485 | 3773 | |
db8a955f | 3774 | generate_std_chains($ruleset, $hostfw_options, $ipversion); |
fadb13dd | 3775 | |
6d2ab017 | 3776 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 3777 | |
35d1d6da | 3778 | if ($hostfw_enable) { |
06208a01 | 3779 | eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf); }; |
1a9978ed DM |
3780 | warn $@ if $@; # just to be sure - should not happen |
3781 | } | |
3fa83edf | 3782 | |
6158271d | 3783 | # generate firewall rules for QEMU VMs |
0a0ba19e | 3784 | foreach my $vmid (sort keys %{$vmdata->{qemu}}) { |
1a9978ed DM |
3785 | eval { |
3786 | my $conf = $vmdata->{qemu}->{$vmid}; | |
3787 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
bd60a824 | 3788 | return if !$vmfw_conf || !$vmfw_conf->{options}->{enable}; |
1a9978ed | 3789 | |
0a0ba19e | 3790 | foreach my $netid (sort keys %$conf) { |
1a9978ed DM |
3791 | next if $netid !~ m/^net(\d+)$/; |
3792 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
3793 | next if !$net->{firewall}; | |
1a9978ed | 3794 | |
ad722fb4 | 3795 | my $iface = "tap${vmid}i$1"; |
1a9978ed DM |
3796 | my $macaddr = $net->{macaddr}; |
3797 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
ad722fb4 | 3798 | $vmfw_conf, $vmid, 'IN', $ipversion); |
1a9978ed | 3799 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
ad722fb4 | 3800 | $vmfw_conf, $vmid, 'OUT', $ipversion); |
1a9978ed DM |
3801 | } |
3802 | }; | |
3803 | warn $@ if $@; # just to be sure - should not happen | |
3fa83edf | 3804 | } |
c8301d63 | 3805 | |
3b4882dc | 3806 | # generate firewall rules for LXC containers |
0a0ba19e | 3807 | foreach my $vmid (sort keys %{$vmdata->{lxc}}) { |
ad722fb4 FG |
3808 | eval { |
3809 | my $conf = $vmdata->{lxc}->{$vmid}; | |
3810 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3811 | return if !$vmfw_conf || !$vmfw_conf->{options}->{enable}; | |
3812 | ||
3813 | foreach my $netid (sort keys %$conf) { | |
3814 | next if $netid !~ m/^net(\d+)$/; | |
3815 | my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid}); | |
3816 | next if !$net->{firewall}; | |
3817 | ||
3818 | my $iface = "veth${vmid}i$1"; | |
3819 | my $macaddr = $net->{hwaddr}; | |
3820 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
3821 | $vmfw_conf, $vmid, 'IN', $ipversion); | |
3822 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
3823 | $vmfw_conf, $vmid, 'OUT', $ipversion); | |
3824 | } | |
3825 | }; | |
3826 | warn $@ if $@; # just to be sure - should not happen | |
3b4882dc AG |
3827 | } |
3828 | ||
ad722fb4 | 3829 | if (ruleset_chain_exist($ruleset, "PVEFW-IPS")){ |
1e9c5070 | 3830 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS"); |
097820b0 AD |
3831 | } |
3832 | ||
147dd882 WB |
3833 | return $ruleset; |
3834 | } | |
3835 | ||
ebf72e49 WB |
3836 | sub mac_to_linklocal { |
3837 | my ($macaddr) = @_; | |
3838 | my @parts = split(/:/, $macaddr); | |
3839 | # The standard link local address uses the fe80::/64 prefix with the | |
3840 | # modified EUI-64 identifier derived from the MAC address by flipping the | |
3841 | # universal/local bit and inserting FF:FE in the middle. | |
3842 | # See RFC 4291. | |
3843 | $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02); | |
3844 | my @meui64 = (@parts[0,1,2], 'ff', 'fe', @parts[3,4,5]); | |
3845 | return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]"; | |
3846 | } | |
3847 | ||
147dd882 WB |
3848 | sub compile_ipsets { |
3849 | my ($cluster_conf, $vmfw_configs, $vmdata) = @_; | |
3850 | ||
3851 | my $localnet; | |
3852 | if ($cluster_conf->{aliases}->{local_network}) { | |
3853 | $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; | |
3854 | } else { | |
3855 | my $localnet_ver; | |
3856 | ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8'); | |
3857 | ||
75a12a9d | 3858 | $cluster_conf->{aliases}->{local_network} = { |
147dd882 WB |
3859 | name => 'local_network', cidr => $localnet, ipversion => $localnet_ver }; |
3860 | } | |
3861 | ||
3862 | push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet }; | |
3863 | ||
3864 | ||
3865 | my $ipset_ruleset = {}; | |
3866 | ||
3867 | # generate ipsets for QEMU VMs | |
3868 | foreach my $vmid (keys %{$vmdata->{qemu}}) { | |
3869 | eval { | |
3870 | my $conf = $vmdata->{qemu}->{$vmid}; | |
3871 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3872 | return if !$vmfw_conf; | |
3873 | ||
74601077 | 3874 | # When the 'ipfilter' option is enabled every device for which there |
e1bfce94 | 3875 | # is no 'ipfilter-netX' ipset defined gets an implicit empty default |
74601077 WB |
3876 | # ipset. |
3877 | # The reason is that ipfilter ipsets are always filled with standard | |
3878 | # IPv6 link-local filters. | |
3879 | my $ipsets = $vmfw_conf->{ipset}; | |
3880 | my $implicit_sets = {}; | |
3881 | ||
ebf72e49 WB |
3882 | my $device_ips = {}; |
3883 | foreach my $netid (keys %$conf) { | |
3884 | next if $netid !~ m/^net(\d+)$/; | |
3885 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
3886 | next if !$net->{firewall}; | |
3887 | ||
74601077 WB |
3888 | if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) { |
3889 | $implicit_sets->{"ipfilter-$netid"} = []; | |
3890 | } | |
3891 | ||
ebf72e49 WB |
3892 | my $macaddr = $net->{macaddr}; |
3893 | my $linklocal = mac_to_linklocal($macaddr); | |
3894 | $device_ips->{$netid} = [ | |
3895 | { cidr => $linklocal }, | |
3896 | { cidr => 'fe80::/10', nomatch => 1 } | |
3897 | ]; | |
3898 | } | |
3899 | ||
74601077 WB |
3900 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets); |
3901 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets); | |
147dd882 WB |
3902 | }; |
3903 | warn $@ if $@; # just to be sure - should not happen | |
3904 | } | |
3905 | ||
3906 | # generate firewall rules for LXC containers | |
3907 | foreach my $vmid (keys %{$vmdata->{lxc}}) { | |
aa229652 WB |
3908 | eval { |
3909 | my $conf = $vmdata->{lxc}->{$vmid}; | |
3910 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3911 | return if !$vmfw_conf; | |
147dd882 | 3912 | |
74601077 | 3913 | # When the 'ipfilter' option is enabled every device for which there |
e1bfce94 | 3914 | # is no 'ipfilter-netX' ipset defined gets an implicit empty default |
74601077 WB |
3915 | # ipset. |
3916 | # The reason is that ipfilter ipsets are always filled with standard | |
383fe679 WB |
3917 | # IPv6 link-local filters, as well as the IP addresses configured |
3918 | # for the container. | |
74601077 WB |
3919 | my $ipsets = $vmfw_conf->{ipset}; |
3920 | my $implicit_sets = {}; | |
3921 | ||
ebf72e49 WB |
3922 | my $device_ips = {}; |
3923 | foreach my $netid (keys %$conf) { | |
3924 | next if $netid !~ m/^net(\d+)$/; | |
a7c85d56 | 3925 | my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid}); |
ebf72e49 WB |
3926 | next if !$net->{firewall}; |
3927 | ||
74601077 WB |
3928 | if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) { |
3929 | $implicit_sets->{"ipfilter-$netid"} = []; | |
3930 | } | |
3931 | ||
ebf72e49 WB |
3932 | my $macaddr = $net->{hwaddr}; |
3933 | my $linklocal = mac_to_linklocal($macaddr); | |
383fe679 | 3934 | my $set = $device_ips->{$netid} = [ |
ebf72e49 WB |
3935 | { cidr => $linklocal }, |
3936 | { cidr => 'fe80::/10', nomatch => 1 } | |
3937 | ]; | |
37ef1ce1 | 3938 | if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) { |
383fe679 WB |
3939 | push @$set, { cidr => $1 }; |
3940 | } | |
37ef1ce1 | 3941 | if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) { |
383fe679 WB |
3942 | push @$set, { cidr => $1 }; |
3943 | } | |
ebf72e49 WB |
3944 | } |
3945 | ||
74601077 WB |
3946 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets); |
3947 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets); | |
aa229652 WB |
3948 | }; |
3949 | warn $@ if $@; # just to be sure - should not happen | |
147dd882 WB |
3950 | } |
3951 | ||
74601077 | 3952 | generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset}); |
27083984 | 3953 | |
147dd882 | 3954 | return $ipset_ruleset; |
3fa83edf DM |
3955 | } |
3956 | ||
c5e8b008 | 3957 | sub compile_ebtables_filter { |
40af93c4 | 3958 | my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata) = @_; |
c5e8b008 | 3959 | |
2549e7ef | 3960 | if (!($cluster_conf->{options}->{ebtables} // 1)) { |
84025e99 SI |
3961 | return {}; |
3962 | } | |
c5e8b008 AD |
3963 | |
3964 | my $ruleset = {}; | |
3965 | ||
3966 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); | |
3967 | ||
c5e8b008 AD |
3968 | ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT"); |
3969 | #for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED', to speedup rules | |
3970 | ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv4', '-j ACCEPT'); | |
3971 | ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv6', '-j ACCEPT'); | |
3972 | ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-o fwln+', '-j PVEFW-FWBR-OUT'); | |
3973 | ||
3974 | # generate firewall rules for QEMU VMs | |
2e30c5c7 | 3975 | foreach my $vmid (sort keys %{$vmdata->{qemu}}) { |
c5e8b008 AD |
3976 | eval { |
3977 | my $conf = $vmdata->{qemu}->{$vmid}; | |
3978 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
60ab67f5 | 3979 | return if !$vmfw_conf || !$vmfw_conf->{options}->{enable}; |
401c141b | 3980 | my $ipsets = $vmfw_conf->{ipset}; |
c5e8b008 | 3981 | |
4a1072dd | 3982 | foreach my $netid (sort keys %$conf) { |
c5e8b008 AD |
3983 | next if $netid !~ m/^net(\d+)$/; |
3984 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
3985 | next if !$net->{firewall}; | |
3986 | my $iface = "tap${vmid}i$1"; | |
3987 | my $macaddr = $net->{macaddr}; | |
401c141b AD |
3988 | my $arpfilter = []; |
3989 | if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) { | |
3990 | foreach my $ipaddr (@$ipset) { | |
3991 | my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr}); | |
3992 | next if !$ip || ($version && $version != 4); | |
3993 | push(@$arpfilter, $ip); | |
3994 | } | |
3995 | } | |
3996 | generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter); | |
c5e8b008 AD |
3997 | } |
3998 | }; | |
3999 | warn $@ if $@; # just to be sure - should not happen | |
4000 | } | |
4001 | ||
4002 | # generate firewall rules for LXC containers | |
2e30c5c7 | 4003 | foreach my $vmid (sort keys %{$vmdata->{lxc}}) { |
c5e8b008 AD |
4004 | eval { |
4005 | my $conf = $vmdata->{lxc}->{$vmid}; | |
4006 | ||
4007 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
4008 | return if !$vmfw_conf || !$vmfw_conf->{options}->{enable}; | |
401c141b | 4009 | my $ipsets = $vmfw_conf->{ipset}; |
c5e8b008 | 4010 | |
4a1072dd | 4011 | foreach my $netid (sort keys %$conf) { |
c5e8b008 AD |
4012 | next if $netid !~ m/^net(\d+)$/; |
4013 | my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid}); | |
4014 | next if !$net->{firewall}; | |
4015 | my $iface = "veth${vmid}i$1"; | |
4016 | my $macaddr = $net->{hwaddr}; | |
401c141b AD |
4017 | my $arpfilter = []; |
4018 | if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) { | |
4019 | foreach my $ipaddr (@$ipset) { | |
4020 | my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr}); | |
4021 | next if !$ip || ($version && $version != 4); | |
4022 | push(@$arpfilter, $ip); | |
4023 | } | |
4024 | } | |
03984808 | 4025 | if (defined(my $ip = $net->{ip}) && $vmfw_conf->{options}->{ipfilter}) { |
a9068b2d TL |
4026 | # ebtables changes this to a .0/MASK network but we just |
4027 | # want the address here, no network - see #2193 | |
255698f6 | 4028 | $ip =~ s|/(\d+)$||; |
c5a10084 ML |
4029 | if ($ip ne 'dhcp') { |
4030 | push @$arpfilter, $ip; | |
4031 | } | |
556ae5c1 | 4032 | } |
401c141b | 4033 | generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter); |
c5e8b008 AD |
4034 | } |
4035 | }; | |
4036 | warn $@ if $@; # just to be sure - should not happen | |
4037 | } | |
4038 | ||
4039 | return $ruleset; | |
4040 | } | |
4041 | ||
4042 | sub generate_tap_layer2filter { | |
401c141b | 4043 | my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_; |
c5e8b008 AD |
4044 | my $options = $vmfw_conf->{options}; |
4045 | ||
4046 | my $tapchain = $iface."-OUT"; | |
4047 | ||
4048 | # ebtables remove zeros from mac pairs | |
4049 | $macaddr =~ s/0([0-9a-f])/$1/ig; | |
4050 | $macaddr = lc($macaddr); | |
4051 | ||
4052 | ruleset_create_chain($ruleset, $tapchain); | |
4053 | ||
4054 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
4a626429 | 4055 | ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP'); |
c5e8b008 AD |
4056 | } |
4057 | ||
401c141b AD |
4058 | if (@$arpfilter){ |
4059 | my $arpchain = $tapchain."-ARP"; | |
4060 | ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain"); | |
4061 | ruleset_create_chain($ruleset, $arpchain); | |
4062 | ||
4063 | foreach my $ip (@{$arpfilter}) { | |
4064 | ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN'); | |
4065 | } | |
4066 | ruleset_addrule($ruleset, $arpchain, '', '-j DROP'); | |
4067 | } | |
4068 | ||
c5e8b008 | 4069 | if (defined($options->{layer2_protocols})){ |
33efd363 AD |
4070 | my $protochain = $tapchain."-PROTO"; |
4071 | ruleset_addrule($ruleset, $tapchain, '', "-j $protochain"); | |
4072 | ruleset_create_chain($ruleset, $protochain); | |
4073 | ||
c5e8b008 | 4074 | foreach my $proto (split(/,/, $options->{layer2_protocols})) { |
33efd363 | 4075 | ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN'); |
c5e8b008 | 4076 | } |
33efd363 | 4077 | ruleset_addrule($ruleset, $protochain, '', '-j DROP'); |
c5e8b008 AD |
4078 | } |
4079 | ||
33efd363 AD |
4080 | ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT'); |
4081 | ||
c5e8b008 AD |
4082 | ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT', "-i $iface", "-j $tapchain"); |
4083 | } | |
4084 | ||
84025e99 SI |
4085 | # the parameter $change_only_regex changes two things if defined: |
4086 | # * all chains not matching it will be left intact | |
4087 | # * both the $active_chains hash and the returned status_hash have different | |
4088 | # structure (they contain a key named 'rules'). | |
3fa83edf | 4089 | sub get_ruleset_status { |
40af93c4 | 4090 | my ($ruleset, $active_chains, $digest_fn, $change_only_regex) = @_; |
3fa83edf DM |
4091 | |
4092 | my $statushash = {}; | |
4093 | ||
4094 | foreach my $chain (sort keys %$ruleset) { | |
84025e99 SI |
4095 | my $rules = $ruleset->{$chain}; |
4096 | my $sig = &$digest_fn($rules); | |
4097 | my $oldsig; | |
9bf7d929 | 4098 | |
3fa83edf | 4099 | $statushash->{$chain}->{sig} = $sig; |
84025e99 SI |
4100 | if (defined($change_only_regex)) { |
4101 | $oldsig = $active_chains->{$chain}->{sig}; | |
4102 | $statushash->{$chain}->{rules} = $rules; | |
4103 | } else { | |
4104 | $oldsig = $active_chains->{$chain}; | |
4105 | } | |
3fa83edf DM |
4106 | if (!defined($oldsig)) { |
4107 | $statushash->{$chain}->{action} = 'create'; | |
4108 | } else { | |
4109 | if ($oldsig eq $sig) { | |
4110 | $statushash->{$chain}->{action} = 'exists'; | |
4111 | } else { | |
4112 | $statushash->{$chain}->{action} = 'update'; | |
4113 | } | |
4114 | } | |
84025e99 SI |
4115 | if ($verbose) { |
4116 | print "$statushash->{$chain}->{action} $chain ($sig)\n"; | |
4117 | foreach my $cmd (@{$rules}) { | |
4118 | print "\t$cmd\n"; | |
4119 | } | |
3fa83edf DM |
4120 | } |
4121 | } | |
4122 | ||
4123 | foreach my $chain (sort keys %$active_chains) { | |
84025e99 SI |
4124 | next if defined($ruleset->{$chain}); |
4125 | my $action = 'delete'; | |
d9551052 | 4126 | my $sig = $active_chains->{$chain}; |
84025e99 SI |
4127 | if (defined($change_only_regex)) { |
4128 | $action = 'ignore' if ($chain !~ m/$change_only_regex/); | |
4129 | $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules}; | |
e410833b | 4130 | $statushash->{$chain}->{policy} = $active_chains->{$chain}->{policy}; |
d9551052 | 4131 | $sig = $sig->{sig}; |
84025e99 | 4132 | } |
84025e99 SI |
4133 | $statushash->{$chain}->{action} = $action; |
4134 | $statushash->{$chain}->{sig} = $sig; | |
4135 | print "$action $chain ($sig)\n" if $verbose; | |
6158271d | 4136 | } |
2a052ee3 | 4137 | |
3fa83edf DM |
4138 | return $statushash; |
4139 | } | |
4140 | ||
3fa83edf DM |
4141 | sub print_sig_rule { |
4142 | my ($chain, $sig) = @_; | |
4143 | ||
09d5f68e DM |
4144 | # We just use this to store a SHA1 checksum used to detect changes |
4145 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
4146 | } |
4147 | ||
df7cb349 | 4148 | sub get_ruleset_cmdlist { |
64e0adf4 | 4149 | my ($ruleset, $iptablescmd, $table) = @_; |
3fa83edf | 4150 | |
64e0adf4 | 4151 | $table = 'filter' if !$table; |
cbb5d6f3 | 4152 | |
64e0adf4 AD |
4153 | my $cmdlist = "*$table\n"; # we pass this to iptables-restore; |
4154 | ||
4155 | my ($active_chains, $hooks) = iptables_get_chains($iptablescmd, $table); | |
40af93c4 | 4156 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest); |
3fa83edf DM |
4157 | |
4158 | # create missing chains first | |
4159 | foreach my $chain (sort keys %$ruleset) { | |
4160 | my $stat = $statushash->{$chain}; | |
4161 | die "internal error" if !$stat; | |
4162 | next if $stat->{action} ne 'create'; | |
886aba9c | 4163 | |
3fa83edf DM |
4164 | $cmdlist .= ":$chain - [0:0]\n"; |
4165 | } | |
4166 | ||
64e0adf4 | 4167 | foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) { |
55fad3b7 DM |
4168 | my $chain = "PVEFW-$h"; |
4169 | if ($ruleset->{$chain} && !$hooks->{$h}) { | |
4170 | $cmdlist .= "-A $h -j $chain\n"; | |
4bd0a9c4 | 4171 | } |
3fa83edf DM |
4172 | } |
4173 | ||
4174 | foreach my $chain (sort keys %$ruleset) { | |
4175 | my $stat = $statushash->{$chain}; | |
4176 | die "internal error" if !$stat; | |
4177 | ||
4178 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
4179 | $cmdlist .= "-F $chain\n"; | |
4180 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
4181 | $cmdlist .= "$cmd\n"; | |
4182 | } | |
4183 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
4184 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 4185 | die "internal error"; # this should not happen |
3fa83edf DM |
4186 | } elsif ($stat->{action} eq 'exists') { |
4187 | # do nothing | |
4188 | } else { | |
4189 | die "internal error - unknown status '$stat->{action}'"; | |
4190 | } | |
4191 | } | |
4192 | ||
f5d28682 DM |
4193 | foreach my $chain (keys %$statushash) { |
4194 | next if $statushash->{$chain}->{action} ne 'delete'; | |
4195 | $cmdlist .= "-F $chain\n"; | |
4196 | } | |
4197 | foreach my $chain (keys %$statushash) { | |
4198 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
4199 | next if $chain eq 'PVEFW-INPUT'; |
4200 | next if $chain eq 'PVEFW-OUTPUT'; | |
4201 | next if $chain eq 'PVEFW-FORWARD'; | |
64e0adf4 | 4202 | next if $chain eq 'PVEFW-PREROUTING'; |
f5d28682 DM |
4203 | $cmdlist .= "-X $chain\n"; |
4204 | } | |
4205 | ||
64e0adf4 | 4206 | my $changes = $cmdlist ne "*$table\n" ? 1 : 0; |
4bd0a9c4 | 4207 | |
3fa83edf DM |
4208 | $cmdlist .= "COMMIT\n"; |
4209 | ||
3f95d14a | 4210 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
4211 | } |
4212 | ||
d4a23c88 | 4213 | my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/; |
84025e99 | 4214 | |
151c209e | 4215 | sub get_ebtables_cmdlist { |
40af93c4 | 4216 | my ($ruleset) = @_; |
151c209e AD |
4217 | |
4218 | my $changes = 0; | |
4219 | my $cmdlist = "*filter\n"; | |
4220 | ||
84025e99 SI |
4221 | my $active_chains = ebtables_get_chains(); |
4222 | my $statushash = get_ruleset_status($ruleset, $active_chains, | |
40af93c4 | 4223 | \&iptables_chain_digest, |
84025e99 | 4224 | $pve_ebtables_chainname_regex); |
151c209e | 4225 | |
84025e99 SI |
4226 | # create chains first and make sure PVE rules are evaluated if active |
4227 | my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD'; | |
4228 | my $pve_include = 0; | |
4229 | foreach my $chain (sort keys %$statushash) { | |
4230 | next if ($statushash->{$chain}->{action} eq 'delete'); | |
e410833b SI |
4231 | my $policy = $statushash->{$chain}->{policy} // 'ACCEPT'; |
4232 | $cmdlist .= ":$chain $policy\n"; | |
84025e99 | 4233 | $pve_include = 1 if ($chain eq 'PVEFW-FORWARD'); |
151c209e AD |
4234 | } |
4235 | ||
84025e99 | 4236 | foreach my $chain (sort keys %$statushash) { |
151c209e | 4237 | my $stat = $statushash->{$chain}; |
84025e99 | 4238 | $changes = 1 if ($stat->{action} !~ 'ignore|exists'); |
defdf28e | 4239 | next if ($stat->{action} eq 'delete'); |
151c209e | 4240 | |
84025e99 SI |
4241 | foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) { |
4242 | if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) { | |
4243 | next if ! $pve_include; | |
4244 | $pve_include = 0; | |
4245 | } | |
151c209e AD |
4246 | $cmdlist .= "$cmd\n"; |
4247 | } | |
4248 | } | |
84025e99 | 4249 | $cmdlist .= "$append_pve_to_forward\n" if $pve_include; |
151c209e AD |
4250 | |
4251 | return wantarray ? ($cmdlist, $changes) : $cmdlist; | |
4252 | } | |
4253 | ||
34cdedfa | 4254 | sub get_ipset_cmdlist { |
40af93c4 | 4255 | my ($ruleset) = @_; |
34cdedfa AD |
4256 | |
4257 | my $cmdlist = ""; | |
4258 | ||
dd7a13fd DM |
4259 | my $delete_cmdlist = ""; |
4260 | ||
4bd0a9c4 | 4261 | my $active_chains = ipset_get_chains(); |
40af93c4 | 4262 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest); |
34cdedfa | 4263 | |
e34d0e58 | 4264 | # remove stale _swap chains |
30f1b100 DM |
4265 | foreach my $chain (keys %$active_chains) { |
4266 | if ($chain =~ m/^PVEFW-\S+_swap$/) { | |
4267 | $cmdlist .= "destroy $chain\n"; | |
4268 | } | |
4269 | } | |
4270 | ||
c69cf614 | 4271 | foreach my $chain (keys %$ruleset) { |
c69cf614 DM |
4272 | my $stat = $statushash->{$chain}; |
4273 | die "internal error" if !$stat; | |
4274 | ||
4275 | if ($stat->{action} eq 'create') { | |
4276 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
4277 | $cmdlist .= "$cmd\n"; | |
4278 | } | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | foreach my $chain (keys %$ruleset) { | |
6d959e3f DM |
4283 | my $stat = $statushash->{$chain}; |
4284 | die "internal error" if !$stat; | |
34cdedfa | 4285 | |
dd7a13fd DM |
4286 | if ($stat->{action} eq 'update') { |
4287 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 4288 | |
dd7a13fd DM |
4289 | foreach my $cmd (@{$ruleset->{$chain}}) { |
4290 | $cmd =~ s/$chain/$chain_swap/; | |
4291 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 4292 | } |
dd7a13fd DM |
4293 | $cmdlist .= "swap $chain_swap $chain\n"; |
4294 | $cmdlist .= "flush $chain_swap\n"; | |
4295 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 4296 | } |
dd7a13fd | 4297 | } |
3f95d14a | 4298 | |
88c26d5e | 4299 | # the remove unused chains |
c69cf614 | 4300 | foreach my $chain (keys %$statushash) { |
dd7a13fd | 4301 | next if $statushash->{$chain}->{action} ne 'delete'; |
2a052ee3 | 4302 | |
dd7a13fd DM |
4303 | $delete_cmdlist .= "flush $chain\n"; |
4304 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
4305 | } |
4306 | ||
dd7a13fd | 4307 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 4308 | |
dd7a13fd | 4309 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
4310 | } |
4311 | ||
6b9f68a2 | 4312 | sub apply_ruleset { |
40af93c4 | 4313 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = @_; |
6b9f68a2 DM |
4314 | |
4315 | enable_bridge_firewall(); | |
4316 | ||
cbb5d6f3 | 4317 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
40af93c4 | 4318 | get_ipset_cmdlist($ipset_ruleset); |
6b9f68a2 | 4319 | |
64e0adf4 AD |
4320 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset->{filter}); |
4321 | my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6->{filter}, "ip6tables"); | |
40af93c4 | 4322 | my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset); |
64e0adf4 AD |
4323 | my ($cmdlist_raw, $changes_raw) = get_ruleset_cmdlist($ruleset->{raw}, undef, 'raw'); |
4324 | my ($cmdlistv6_raw, $changesv6_raw) = get_ruleset_cmdlist($rulesetv6->{raw}, "ip6tables", 'raw'); | |
2a052ee3 | 4325 | |
81a0bf43 DM |
4326 | if ($verbose) { |
4327 | if ($ipset_changes) { | |
4328 | print "ipset changes:\n"; | |
4329 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
4330 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
4331 | } | |
3f95d14a | 4332 | |
81a0bf43 DM |
4333 | if ($changes) { |
4334 | print "iptables changes:\n"; | |
4335 | print $cmdlist; | |
4336 | } | |
17da5c0f AD |
4337 | |
4338 | if ($changesv6) { | |
4339 | print "ip6tables changes:\n"; | |
4340 | print $cmdlistv6; | |
4341 | } | |
151c209e | 4342 | |
64e0adf4 AD |
4343 | if ($changes_raw) { |
4344 | print "iptables table raw changes:\n"; | |
4345 | print $cmdlist_raw; | |
4346 | } | |
4347 | ||
4348 | if ($changesv6_raw) { | |
4349 | print "ip6tables table raw changes:\n"; | |
4350 | print $cmdlistv6_raw; | |
4351 | } | |
4352 | ||
151c209e AD |
4353 | if ($ebtables_changes) { |
4354 | print "ebtables changes:\n"; | |
4355 | print $ebtables_cmdlist; | |
4356 | } | |
81a0bf43 | 4357 | } |
3fa83edf | 4358 | |
259db1e6 DM |
4359 | my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1"; |
4360 | PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || ''); | |
4361 | ||
2a052ee3 | 4362 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 4363 | |
259db1e6 DM |
4364 | $tmpfile = "$pve_fw_status_dir/ip4cmdlist"; |
4365 | PVE::Tools::file_set_contents($tmpfile, $cmdlist || ''); | |
4366 | ||
3fa83edf | 4367 | iptables_restore_cmdlist($cmdlist); |
259db1e6 | 4368 | |
64e0adf4 AD |
4369 | $tmpfile = "$pve_fw_status_dir/ip4cmdlistraw"; |
4370 | PVE::Tools::file_set_contents($tmpfile, $cmdlist_raw || ''); | |
4371 | ||
4372 | iptables_restore_cmdlist($cmdlist_raw, 'raw'); | |
4373 | ||
259db1e6 DM |
4374 | $tmpfile = "$pve_fw_status_dir/ip6cmdlist"; |
4375 | PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || ''); | |
4376 | ||
17da5c0f | 4377 | ip6tables_restore_cmdlist($cmdlistv6); |
3fa83edf | 4378 | |
64e0adf4 AD |
4379 | $tmpfile = "$pve_fw_status_dir/ip6cmdlistraw"; |
4380 | PVE::Tools::file_set_contents($tmpfile, $cmdlistv6_raw || ''); | |
4381 | ||
4382 | ip6tables_restore_cmdlist($cmdlistv6_raw, 'raw'); | |
4383 | ||
259db1e6 DM |
4384 | $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2"; |
4385 | PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || ''); | |
4386 | ||
dd7a13fd | 4387 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 4388 | |
151c209e AD |
4389 | ebtables_restore_cmdlist($ebtables_cmdlist); |
4390 | ||
4391 | $tmpfile = "$pve_fw_status_dir/ebtablescmdlist"; | |
4392 | PVE::Tools::file_set_contents($tmpfile, $ebtables_cmdlist || ''); | |
4393 | ||
6158271d | 4394 | # test: re-read status and check if everything is up to date |
64e0adf4 | 4395 | my $ruleset_filter = $ruleset->{filter}; |
4bd0a9c4 | 4396 | my $active_chains = iptables_get_chains(); |
64e0adf4 | 4397 | my $statushash = get_ruleset_status($ruleset_filter, $active_chains, \&iptables_chain_digest); |
3fa83edf DM |
4398 | |
4399 | my $errors; | |
64e0adf4 | 4400 | foreach my $chain (sort keys %$ruleset_filter) { |
3fa83edf DM |
4401 | my $stat = $statushash->{$chain}; |
4402 | if ($stat->{action} ne 'exists') { | |
4403 | warn "unable to update chain '$chain'\n"; | |
4404 | $errors = 1; | |
4405 | } | |
4406 | } | |
b6360c3f | 4407 | |
64e0adf4 | 4408 | my $rulesetv6_filter = $rulesetv6->{filter}; |
17da5c0f | 4409 | my $active_chainsv6 = iptables_get_chains("ip6tables"); |
64e0adf4 | 4410 | my $statushashv6 = get_ruleset_status($rulesetv6_filter, $active_chainsv6, \&iptables_chain_digest); |
17da5c0f | 4411 | |
64e0adf4 | 4412 | foreach my $chain (sort keys %$rulesetv6_filter) { |
17da5c0f AD |
4413 | my $stat = $statushashv6->{$chain}; |
4414 | if ($stat->{action} ne 'exists') { | |
4415 | warn "unable to update chain '$chain'\n"; | |
4416 | $errors = 1; | |
4417 | } | |
4418 | } | |
4419 | ||
64e0adf4 AD |
4420 | my $ruleset_raw = $ruleset->{raw}; |
4421 | my $active_chains_raw = iptables_get_chains(undef, 'raw'); | |
4422 | my $statushash_raw = get_ruleset_status($ruleset_raw, $active_chains_raw, \&iptables_chain_digest); | |
4423 | ||
4424 | foreach my $chain (sort keys %$ruleset_raw) { | |
4425 | my $stat = $statushash_raw->{$chain}; | |
4426 | if ($stat->{action} ne 'exists') { | |
4427 | warn "unable to update chain '$chain'\n"; | |
4428 | $errors = 1; | |
4429 | } | |
4430 | } | |
4431 | ||
4432 | my $rulesetv6_raw = $rulesetv6->{raw}; | |
4433 | my $active_chainsv6_raw = iptables_get_chains("ip6tables", 'raw'); | |
4434 | my $statushashv6_raw = get_ruleset_status($rulesetv6_raw, $active_chainsv6_raw, \&iptables_chain_digest); | |
4435 | ||
4436 | foreach my $chain (sort keys %$rulesetv6_raw) { | |
4437 | my $stat = $statushashv6_raw->{$chain}; | |
4438 | if ($stat->{action} ne 'exists') { | |
4439 | warn "unable to update chain '$chain'\n"; | |
4440 | $errors = 1; | |
4441 | } | |
4442 | } | |
4443 | ||
151c209e | 4444 | my $active_ebtables_chains = ebtables_get_chains(); |
84025e99 SI |
4445 | my $ebtables_statushash = get_ruleset_status($ebtables_ruleset, |
4446 | $active_ebtables_chains, \&iptables_chain_digest, | |
40af93c4 | 4447 | $pve_ebtables_chainname_regex); |
151c209e AD |
4448 | |
4449 | foreach my $chain (sort keys %$ebtables_ruleset) { | |
4450 | my $stat = $ebtables_statushash->{$chain}; | |
4451 | if ($stat->{action} ne 'exists') { | |
4452 | warn "ebtables : unable to update chain '$chain'\n"; | |
4453 | $errors = 1; | |
4454 | } | |
4455 | } | |
4456 | ||
3fa83edf | 4457 | die "unable to apply firewall changes\n" if $errors; |
46a2ac1f AD |
4458 | |
4459 | update_nf_conntrack_max($hostfw_conf); | |
4460 | ||
4461 | update_nf_conntrack_tcp_timeout_established($hostfw_conf); | |
4462 | ||
ac5dd88e AD |
4463 | update_nf_conntrack_tcp_timeout_syn_recv($hostfw_conf); |
4464 | ||
6c27f4f3 | 4465 | update_nf_conntrack_logging($hostfw_conf); |
b6360c3f DM |
4466 | } |
4467 | ||
490cdead DM |
4468 | sub update_nf_conntrack_max { |
4469 | my ($hostfw_conf) = @_; | |
4470 | ||
b2ec31cc | 4471 | my $max = 262144; # reasonable default (2^16 * 4), see nf_conntrack-sysctl docs |
490cdead DM |
4472 | |
4473 | my $options = $hostfw_conf->{options} || {}; | |
4474 | ||
4475 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
4476 | $max = $options->{nf_conntrack_max}; | |
4477 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
4478 | } | |
4479 | ||
4480 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
4481 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
4482 | ||
4483 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
4484 | ||
4485 | if ($current != $max) { | |
4486 | my $hashsize = int($max/4); | |
4487 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
4488 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
4489 | } | |
4490 | } | |
4491 | ||
28c082a1 AD |
4492 | sub update_nf_conntrack_tcp_timeout_established { |
4493 | my ($hostfw_conf) = @_; | |
4494 | ||
4495 | my $options = $hostfw_conf->{options} || {}; | |
4496 | ||
4497 | my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000; | |
4498 | ||
4499 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value); | |
4500 | } | |
4501 | ||
ac5dd88e AD |
4502 | sub update_nf_conntrack_tcp_timeout_syn_recv { |
4503 | my ($hostfw_conf) = @_; | |
4504 | ||
4505 | my $options = $hostfw_conf->{options} || {}; | |
4506 | ||
4507 | my $value = defined($options->{nf_conntrack_tcp_timeout_syn_recv}) ? $options->{nf_conntrack_tcp_timeout_syn_recev} : 60; | |
4508 | ||
4509 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_syn_recv", $value); | |
4510 | } | |
4511 | ||
6c27f4f3 DL |
4512 | my $log_nf_conntrack_enabled = undef; |
4513 | sub update_nf_conntrack_logging { | |
4514 | my ($hostfw_conf) = @_; | |
4515 | ||
4516 | my $options = $hostfw_conf->{options} || {}; | |
4517 | my $value = $options->{log_nf_conntrack} || 0; | |
4518 | if (!defined($log_nf_conntrack_enabled) | |
4519 | || $value != $log_nf_conntrack_enabled) | |
4520 | { | |
4521 | my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack"; | |
4522 | PVE::Tools::file_set_contents($tmpfile, $value); | |
4523 | ||
c1031ab1 | 4524 | run_command([qw(systemctl try-reload-or-restart pvefw-logger.service)]); |
6c27f4f3 DL |
4525 | $log_nf_conntrack_enabled = $value; |
4526 | } | |
4527 | } | |
4528 | ||
c4a2e5ae DM |
4529 | sub remove_pvefw_chains { |
4530 | ||
7b7b2654 AD |
4531 | PVE::Firewall::remove_pvefw_chains_iptables("iptables"); |
4532 | PVE::Firewall::remove_pvefw_chains_iptables("ip6tables"); | |
64e0adf4 AD |
4533 | PVE::Firewall::remove_pvefw_chains_iptables("iptables", "raw"); |
4534 | PVE::Firewall::remove_pvefw_chains_iptables("ip6tables", "raw"); | |
7b7b2654 | 4535 | PVE::Firewall::remove_pvefw_chains_ipset(); |
0e8af63d | 4536 | PVE::Firewall::remove_pvefw_chains_ebtables(); |
7b7b2654 AD |
4537 | |
4538 | } | |
4539 | ||
4540 | sub remove_pvefw_chains_iptables { | |
64e0adf4 | 4541 | my ($iptablescmd, $table) = @_; |
7b7b2654 | 4542 | |
64e0adf4 AD |
4543 | $table = 'filter' if !$table; |
4544 | ||
4545 | my ($chash, $hooks) = iptables_get_chains($iptablescmd, $table); | |
4546 | my $cmdlist = "*$table\n"; | |
c4a2e5ae | 4547 | |
64e0adf4 | 4548 | foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) { |
c4a2e5ae DM |
4549 | if ($hooks->{$h}) { |
4550 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
4551 | } | |
4552 | } | |
cbb5d6f3 | 4553 | |
c4a2e5ae DM |
4554 | foreach my $chain (keys %$chash) { |
4555 | $cmdlist .= "-F $chain\n"; | |
4556 | } | |
4557 | ||
4558 | foreach my $chain (keys %$chash) { | |
4559 | $cmdlist .= "-X $chain\n"; | |
4560 | } | |
4561 | $cmdlist .= "COMMIT\n"; | |
4562 | ||
7b7b2654 | 4563 | if($iptablescmd eq "ip6tables") { |
64e0adf4 | 4564 | ip6tables_restore_cmdlist($cmdlist, $table); |
7b7b2654 | 4565 | } else { |
64e0adf4 | 4566 | iptables_restore_cmdlist($cmdlist, $table); |
7b7b2654 AD |
4567 | } |
4568 | } | |
4569 | ||
4570 | sub remove_pvefw_chains_ipset { | |
55fad3b7 DM |
4571 | |
4572 | my $ipset_chains = ipset_get_chains(); | |
4573 | ||
7b7b2654 | 4574 | my $cmdlist = ""; |
75a12a9d | 4575 | |
55fad3b7 | 4576 | foreach my $chain (keys %$ipset_chains) { |
88c26d5e DM |
4577 | $cmdlist .= "flush $chain\n"; |
4578 | $cmdlist .= "destroy $chain\n"; | |
55fad3b7 DM |
4579 | } |
4580 | ||
7b7b2654 | 4581 | ipset_restore_cmdlist($cmdlist) if $cmdlist; |
c4a2e5ae DM |
4582 | } |
4583 | ||
0e8af63d FG |
4584 | sub remove_pvefw_chains_ebtables { |
4585 | # apply empty ruleset = remove all our chains | |
4586 | ebtables_restore_cmdlist(get_ebtables_cmdlist({})); | |
4587 | } | |
4588 | ||
8b453a09 DM |
4589 | sub init { |
4590 | my $cluster_conf = load_clusterfw_conf(); | |
4591 | my $cluster_options = $cluster_conf->{options}; | |
4592 | my $enable = $cluster_options->{enable}; | |
4593 | ||
4594 | return if !$enable; | |
4595 | ||
4596 | # load required modules here | |
4597 | } | |
4598 | ||
6b9f68a2 | 4599 | sub update { |
6b9f68a2 | 4600 | my $code = sub { |
3dfa8a7f DM |
4601 | |
4602 | my $cluster_conf = load_clusterfw_conf(); | |
4603 | my $cluster_options = $cluster_conf->{options}; | |
4604 | ||
55fad3b7 | 4605 | if (!$cluster_options->{enable}) { |
b22130d3 | 4606 | PVE::Firewall::remove_pvefw_chains(); |
3dfa8a7f DM |
4607 | return; |
4608 | } | |
4609 | ||
50f9a28d | 4610 | my $hostfw_conf = load_hostfw_conf($cluster_conf); |
3dfa8a7f | 4611 | |
c5e8b008 | 4612 | my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile($cluster_conf, $hostfw_conf); |
490cdead | 4613 | |
151c209e | 4614 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset); |
6b9f68a2 DM |
4615 | }; |
4616 | ||
4617 | run_locked($code); | |
4618 | } | |
4619 | ||
b6360c3f | 4620 | 1; |