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