8 use Socket
qw(AF_INET6 inet_ntop inet_pton);
10 use PVE
::Exception
qw(raise raise_param_exc);
11 use PVE
::JSONSchema
qw(register_standard_option get_standard_option);
14 use PVE
::Tools
qw($IPV4RE $IPV6RE);
19 use PVE
::Tools
qw(run_command lock_file dir_glob_foreach);
22 my $hostfw_conf_filename = "/etc/pve/local/host.fw";
23 my $pvefw_conf_dir = "/etc/pve/firewall";
24 my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
26 # dynamically include PVE::QemuServer and PVE::LXC
27 # to avoid dependency problems
30 require PVE
::QemuServer
;
31 $have_qemu_server = 1;
41 my $pve_fw_status_dir = "/var/lib/pve-firewall";
43 mkdir $pve_fw_status_dir; # make sure this exists
45 my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
46 my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
47 our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
49 my $max_alias_name_length = 64;
50 my $max_ipset_name_length = 64;
51 my $max_group_name_length = 20;
53 PVE
::JSONSchema
::register_format
('IPorCIDR', \
&pve_verify_ip_or_cidr
);
54 sub pve_verify_ip_or_cidr
{
55 my ($cidr, $noerr) = @_;
57 if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
58 return $cidr if Net
::IP-
>new($cidr);
59 return undef if $noerr;
60 die Net
::IP
::Error
() . "\n";
62 return undef if $noerr;
63 die "value does not look like a valid IP address or CIDR network\n";
66 PVE
::JSONSchema
::register_format
('IPorCIDRorAlias', \
&pve_verify_ip_or_cidr_or_alias
);
67 sub pve_verify_ip_or_cidr_or_alias
{
68 my ($cidr, $noerr) = @_;
70 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
72 return pve_verify_ip_or_cidr
($cidr, $noerr);
75 PVE
::JSONSchema
::register_standard_option
('ipset-name', {
76 description
=> "IP set name.",
78 pattern
=> $ipset_name_pattern,
80 maxLength
=> $max_ipset_name_length,
83 PVE
::JSONSchema
::register_standard_option
('pve-fw-alias', {
84 description
=> "Alias name.",
86 pattern
=> $ip_alias_pattern,
88 maxLength
=> $max_alias_name_length,
91 PVE
::JSONSchema
::register_standard_option
('pve-fw-loglevel' => {
92 description
=> "Log level.",
94 enum
=> ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
98 PVE
::JSONSchema
::register_standard_option
('pve-security-group-name', {
99 description
=> "Security Group name.",
101 pattern
=> $security_group_name_pattern,
103 maxLength
=> $max_group_name_length,
106 my $feature_ipset_nomatch = 0;
108 my (undef, undef, $release) = POSIX
::uname
();
109 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
110 my ($major, $minor) = ($1, $2);
111 $feature_ipset_nomatch = 1 if ($major > 3) ||
112 ($major == 3 && $minor >= 7);
117 my $nodename = PVE
::INotify
::nodename
();
119 my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
121 my $default_log_level = 'nolog'; # avoid logs by default
123 my $log_level_hash = {
134 # we need to overwrite some macros for ipv6
135 my $pve_ipv6fw_macros = {
137 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'echo-request' },
139 'NeighborDiscovery' => [
140 "IPv6 neighbor solicitation, neighbor and router advertisement",
141 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'router-solicitation' },
142 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'router-advertisement' },
143 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'neighbor-solicitation' },
144 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'neighbor-advertisement' },
147 { action
=> 'PARAM', proto
=> 'udp', dport
=> '546:547', sport
=> '546:547' },
150 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
151 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'echo-request' },
155 # imported/converted from: /usr/share/shorewall/macro.*
156 my $pve_fw_macros = {
159 { action
=> 'PARAM', proto
=> 'udp', dport
=> '10080' },
160 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10080' },
163 "Auth (identd) traffic",
164 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '113' },
167 "Border Gateway Protocol traffic",
168 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '179' },
171 "BitTorrent traffic for BitTorrent 3.1 and earlier",
172 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6889' },
173 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
176 "BitTorrent traffic for BitTorrent 3.2 and later",
177 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6999' },
178 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
181 "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)",
182 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6789' },
183 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6800:7300' },
186 "Concurrent Versions System pserver traffic",
187 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2401' },
190 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
191 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1494' },
192 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1604' },
193 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2598' },
196 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
197 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3689' },
198 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3689' },
201 "Distributed Checksum Clearinghouse spam filtering mechanism",
202 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6277' },
205 "Forwarded DHCP traffic",
206 { action
=> 'PARAM', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
209 "Domain Name System traffic (upd and tcp)",
210 { action
=> 'PARAM', proto
=> 'udp', dport
=> '53' },
211 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '53' },
214 "Distributed Compiler service",
215 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3632' },
218 "File Transfer Protocol",
219 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '21' },
222 "Finger protocol (RFC 742)",
223 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '79' },
226 "GNUnet secure peer-to-peer networking traffic",
227 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2086' },
228 { action
=> 'PARAM', proto
=> 'udp', dport
=> '2086' },
229 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1080' },
230 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1080' },
233 "Generic Routing Encapsulation tunneling protocol",
234 { action
=> 'PARAM', proto
=> '47' },
237 "Git distributed revision control traffic",
238 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9418' },
241 "OpenPGP HTTP keyserver protocol traffic",
242 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '11371' },
245 "Hypertext Transfer Protocol (WWW)",
246 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
249 "Hypertext Transfer Protocol (WWW) over SSL",
250 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
253 "Internet Cache Protocol V2 (Squid) traffic",
254 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3130' },
257 "AOL Instant Messenger traffic",
258 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5190' },
261 "Internet Message Access Protocol",
262 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '143' },
265 "Internet Message Access Protocol over SSL",
266 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '993' },
269 "IPIP capsulation traffic",
270 { action
=> 'PARAM', proto
=> '94' },
274 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
275 { action
=> 'PARAM', proto
=> '50' },
278 "IPsec authentication (AH) traffic",
279 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
280 { action
=> 'PARAM', proto
=> '51' },
283 "IPsec traffic and Nat-Traversal",
284 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500' },
285 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4500' },
286 { action
=> 'PARAM', proto
=> '50' },
289 "Internet Relay Chat traffic",
290 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6667' },
293 "HP Jetdirect printing",
294 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9100' },
297 "Layer 2 Tunneling Protocol traffic",
298 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1701' },
301 "Lightweight Directory Access Protocol traffic",
302 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '389' },
305 "Secure Lightweight Directory Access Protocol traffic",
306 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '636' },
309 "Microsoft Notification Protocol",
310 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1863' },
313 "Microsoft SQL Server",
314 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1433' },
317 "Mail traffic (SMTP, SMTPS, Submission)",
318 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
319 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
320 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
323 "Munin networked resource monitoring traffic",
324 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4949' },
328 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3306' },
331 "NNTP traffic (Usenet).",
332 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '119' },
335 "Encrypted NNTP traffic (Usenet)",
336 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '563' },
339 "Network Time Protocol (ntpd)",
340 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
343 "OSPF multicast traffic",
344 { action
=> 'PARAM', proto
=> '89' },
348 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1194' },
351 "Symantec PCAnywere (tm)",
352 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5632' },
353 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5631' },
357 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '110' },
360 "Encrypted POP3 traffic",
361 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '995' },
364 "Point-to-Point Tunneling Protocol",
365 { action
=> 'PARAM', proto
=> '47' },
366 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1723' },
370 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
374 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5432' },
377 "Line Printer protocol printing",
378 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '515' },
381 "Microsoft Remote Desktop Protocol traffic",
382 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3389' },
385 "Routing Information Protocol (bidirectional)",
386 { action
=> 'PARAM', proto
=> 'udp', dport
=> '520' },
389 "BIND remote management protocol",
390 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '953' },
393 "Razor Antispam System",
394 { action
=> 'ACCEPT', proto
=> 'tcp', dport
=> '2703' },
397 "Remote time retrieval (rdate)",
398 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
402 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '873' },
405 "SANE network scanning",
406 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6566' },
409 "Microsoft SMB traffic",
410 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
411 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
412 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
413 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
416 "Samba Web Administration Tool",
417 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '901' },
420 "Simple Mail Transfer Protocol",
421 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
424 "Encrypted Simple Mail Transfer Protocol",
425 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
428 "Simple Network Management Protocol",
429 { action
=> 'PARAM', proto
=> 'udp', dport
=> '161:162' },
430 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '161' },
433 "Spam Assassin SPAMD traffic",
434 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '783' },
437 "Secure shell traffic",
438 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '22' },
441 "Subversion server (svnserve)",
442 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3690' },
445 "SixXS IPv6 Deployment and Tunnel Broker",
446 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3874' },
447 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3740' },
448 { action
=> 'PARAM', proto
=> '41' },
449 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5072,8374' },
452 "Squid web proxy traffic",
453 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3128' },
456 "Mail message submission traffic",
457 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
460 "Syslog protocol (RFC 5424) traffic",
461 { action
=> 'PARAM', proto
=> 'udp', dport
=> '514' },
462 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '514' },
465 "Trivial File Transfer Protocol traffic",
466 { action
=> 'PARAM', proto
=> 'udp', dport
=> '69' },
470 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '23' },
474 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '992' },
477 "RFC 868 Time protocol",
478 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
481 "Traceroute (for up to 30 hops) traffic",
482 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
483 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
486 "VNC traffic for VNC display's 0 - 99",
487 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5900:5999' },
490 "VNC traffic from Vncservers to Vncviewers in listen mode",
491 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5500' },
494 "WWW traffic (HTTP and HTTPS)",
495 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
496 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
499 "Web Cache/Proxy traffic (port 8080)",
500 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '8080' },
504 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10000' },
507 "Whois (nicname, RFC 3912) traffic",
508 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '43' },
512 my $pve_fw_parsed_macros;
513 my $pve_fw_macro_descr;
514 my $pve_fw_macro_ipversion = {};
515 my $pve_fw_preferred_macro_names = {};
517 my $pve_std_chains = {};
518 $pve_std_chains->{4} = {
519 'PVEFW-SET-ACCEPT-MARK' => [
520 "-j MARK --set-mark 1",
522 'PVEFW-DropBroadcast' => [
523 # same as shorewall 'Broadcast'
524 # simply DROP BROADCAST/MULTICAST/ANYCAST
525 # we can use this to reduce logging
526 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
527 { action
=> 'DROP', dsttype
=> 'MULTICAST' },
528 { action
=> 'DROP', dsttype
=> 'ANYCAST' },
529 { action
=> 'DROP', dest
=> '224.0.0.0/4' },
532 # same as shorewall 'reject'
533 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
534 { action
=> 'DROP', source
=> '224.0.0.0/4' },
535 { action
=> 'DROP', proto
=> 'icmp' },
536 "-p tcp -j REJECT --reject-with tcp-reset",
537 "-p udp -j REJECT --reject-with icmp-port-unreachable",
538 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
539 "-j REJECT --reject-with icmp-host-prohibited",
542 # same as shorewall 'Drop', which is equal to DROP,
543 # but REJECT/DROP some packages to reduce logging,
544 # and ACCEPT critical ICMP types
545 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
546 # we are not interested in BROADCAST/MULTICAST/ANYCAST
547 { action
=> 'PVEFW-DropBroadcast' },
548 # ACCEPT critical ICMP types
549 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
550 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
551 # Drop packets with INVALID state
552 "-m conntrack --ctstate INVALID -j DROP",
553 # Drop Microsoft SMB noise
554 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
555 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
556 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
557 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
558 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
559 # Drop new/NotSyn traffic so that it doesn't get logged
560 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
562 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
565 # same as shorewall 'Reject', which is equal to Reject,
566 # but REJECT/DROP some packages to reduce logging,
567 # and ACCEPT critical ICMP types
568 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
569 # we are not interested in BROADCAST/MULTICAST/ANYCAST
570 { action
=> 'PVEFW-DropBroadcast' },
571 # ACCEPT critical ICMP types
572 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
573 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
574 # Drop packets with INVALID state
575 "-m conntrack --ctstate INVALID -j DROP",
576 # Drop Microsoft SMB noise
577 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
578 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
579 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
580 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
581 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
582 # Drop new/NotSyn traffic so that it doesn't get logged
583 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
585 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
587 'PVEFW-tcpflags' => [
588 # same as shorewall tcpflags action.
589 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
590 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
591 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
592 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
593 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
594 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
597 # same as shorewall smurfs action
598 # Filter packets for smurfs (packets with a broadcast address as the source).
599 "-s 0.0.0.0/32 -j RETURN", # allow DHCP
600 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
601 "-s 224.0.0.0/4 -g PVEFW-smurflog",
605 $pve_std_chains->{6} = {
606 'PVEFW-SET-ACCEPT-MARK' => [
607 "-j MARK --set-mark 1",
609 'PVEFW-DropBroadcast' => [
610 # same as shorewall 'Broadcast'
611 # simply DROP BROADCAST/MULTICAST/ANYCAST
612 # we can use this to reduce logging
613 #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
614 # ipv6 addrtype does not work with kernel 2.6.32
615 #{ action => 'DROP', dsttype => 'MULTICAST' },
616 #{ action => 'DROP', dsttype => 'ANYCAST' },
617 { action
=> 'DROP', dest
=> 'ff00::/8' },
618 #{ action => 'DROP', dest => '224.0.0.0/4' },
621 # same as shorewall 'reject'
622 #{ action => 'DROP', dsttype => 'BROADCAST' },
623 #{ action => 'DROP', source => '224.0.0.0/4' },
624 { action
=> 'DROP', proto
=> 'icmpv6' },
625 "-p tcp -j REJECT --reject-with tcp-reset",
626 #"-p udp -j REJECT --reject-with icmp-port-unreachable",
627 #"-p icmp -j REJECT --reject-with icmp-host-unreachable",
628 #"-j REJECT --reject-with icmp-host-prohibited",
631 # same as shorewall 'Drop', which is equal to DROP,
632 # but REJECT/DROP some packages to reduce logging,
633 # and ACCEPT critical ICMP types
634 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
635 # we are not interested in BROADCAST/MULTICAST/ANYCAST
636 { action
=> 'PVEFW-DropBroadcast' },
637 # ACCEPT critical ICMP types
638 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'destination-unreachable' },
639 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'time-exceeded' },
640 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'packet-too-big' },
642 # Drop packets with INVALID state
643 "-m conntrack --ctstate INVALID -j DROP",
644 # Drop Microsoft SMB noise
645 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
646 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
647 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
648 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
649 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
650 # Drop new/NotSyn traffic so that it doesn't get logged
651 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
653 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
656 # same as shorewall 'Reject', which is equal to Reject,
657 # but REJECT/DROP some packages to reduce logging,
658 # and ACCEPT critical ICMP types
659 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
660 # we are not interested in BROADCAST/MULTICAST/ANYCAST
661 { action
=> 'PVEFW-DropBroadcast' },
662 # ACCEPT critical ICMP types
663 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'destination-unreachable' },
664 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'time-exceeded' },
665 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'packet-too-big' },
667 # Drop packets with INVALID state
668 "-m conntrack --ctstate INVALID -j DROP",
669 # Drop Microsoft SMB noise
670 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
671 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
672 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
673 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
674 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
675 # Drop new/NotSyn traffic so that it doesn't get logged
676 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
678 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
680 'PVEFW-tcpflags' => [
681 # same as shorewall tcpflags action.
682 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
683 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
684 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
685 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
686 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
687 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
691 # iptables -p icmp -h
692 my $icmp_type_names = {
695 'destination-unreachable' => 1,
696 'network-unreachable' => 1,
697 'host-unreachable' => 1,
698 'protocol-unreachable' => 1,
699 'port-unreachable' => 1,
700 'fragmentation-needed' => 1,
701 'source-route-failed' => 1,
702 'network-unknown' => 1,
704 'network-prohibited' => 1,
705 'host-prohibited' => 1,
706 'TOS-network-unreachable' => 1,
707 'TOS-host-unreachable' => 1,
708 'communication-prohibited' => 1,
709 'host-precedence-violation' => 1,
710 'precedence-cutoff' => 1,
711 'source-quench' => 1,
713 'network-redirect' => 1,
714 'host-redirect' => 1,
715 'TOS-network-redirect' => 1,
716 'TOS-host-redirect' => 1,
718 'router-advertisement' => 1,
719 'router-solicitation' => 1,
720 'time-exceeded' => 1,
721 'ttl-zero-during-transit' => 1,
722 'ttl-zero-during-reassembly' => 1,
723 'parameter-problem' => 1,
724 'ip-header-bad' => 1,
725 'required-option-missing' => 1,
726 'timestamp-request' => 1,
727 'timestamp-reply' => 1,
728 'address-mask-request' => 1,
729 'address-mask-reply' => 1,
732 # ip6tables -p icmpv6 -h
734 my $icmpv6_type_names = {
736 'destination-unreachable' => 1,
738 'communication-prohibited' => 1,
739 'address-unreachable' => 1,
740 'port-unreachable' => 1,
741 'packet-too-big' => 1,
742 'time-exceeded' => 1,
743 'ttl-zero-during-transit' => 1,
744 'ttl-zero-during-reassembly' => 1,
745 'parameter-problem' => 1,
747 'unknown-header-type' => 1,
748 'unknown-option' => 1,
751 'router-solicitation' => 1,
752 'router-advertisement' => 1,
753 'neighbor-solicitation' => 1,
754 'neighbour-solicitation' => 1,
755 'neighbor-advertisement' => 1,
756 'neighbour-advertisement' => 1,
760 sub init_firewall_macros
{
762 $pve_fw_parsed_macros = {};
765 my ($k, $macro) = @_;
766 my $lc_name = lc($k);
767 $pve_fw_macro_ipversion->{$k} = 0;
768 while (!ref($macro->[0])) {
769 my $desc = shift @$macro;
770 if ($desc eq 'ipv4only') {
771 $pve_fw_macro_ipversion->{$k} = 4;
772 } elsif ($desc eq 'ipv6only') {
773 $pve_fw_macro_ipversion->{$k} = 6;
775 $pve_fw_macro_descr->{$k} = $desc;
778 $pve_fw_preferred_macro_names->{$lc_name} = $k;
779 $pve_fw_parsed_macros->{$k} = $macro;
782 foreach my $k (keys %$pve_fw_macros) {
783 &$parse($k, $pve_fw_macros->{$k});
786 foreach my $k (keys %$pve_ipv6fw_macros) {
787 next if $pve_fw_parsed_macros->{$k};
788 &$parse($k, $pve_ipv6fw_macros->{$k});
789 $pve_fw_macro_ipversion->{$k} = 6;
793 init_firewall_macros
();
796 return wantarray ?
($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
801 sub get_etc_services
{
803 return $etc_services if $etc_services;
805 my $filename = "/etc/services";
807 my $fh = IO
::File-
>new($filename, O_RDONLY
);
809 warn "unable to read '$filename' - $!\n";
815 while (my $line = <$fh>) {
817 next if $line =~m/^#/;
818 next if ($line =~m/^\s*$/);
820 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
821 $services->{byid
}->{$2}->{name
} = $1;
822 $services->{byid
}->{$2}->{port
} = $2;
823 $services->{byid
}->{$2}->{$3} = 1;
824 $services->{byname
}->{$1} = $services->{byid
}->{$2};
830 $etc_services = $services;
833 return $etc_services;
838 sub get_etc_protocols
{
839 return $etc_protocols if $etc_protocols;
841 my $filename = "/etc/protocols";
843 my $fh = IO
::File-
>new($filename, O_RDONLY
);
845 warn "unable to read '$filename' - $!\n";
851 while (my $line = <$fh>) {
853 next if $line =~m/^#/;
854 next if ($line =~m/^\s*$/);
856 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
857 $protocols->{byid
}->{$2}->{name
} = $1;
858 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
864 # add special case for ICMP v6
865 $protocols->{byid
}->{icmpv6
}->{name
} = "icmpv6";
866 $protocols->{byname
}->{icmpv6
} = $protocols->{byid
}->{icmpv6
};
868 $etc_protocols = $protocols;
870 return $etc_protocols;
873 my $ipv4_mask_hash_localnet = {
875 '255.255.128.0' => 17,
876 '255.255.192.0' => 18,
877 '255.255.224.0' => 19,
878 '255.255.240.0' => 20,
879 '255.255.248.0' => 21,
880 '255.255.252.0' => 22,
881 '255.255.254.0' => 23,
882 '255.255.255.0' => 24,
883 '255.255.255.128' => 25,
884 '255.255.255.192' => 26,
885 '255.255.255.224' => 27,
886 '255.255.255.240' => 28,
887 '255.255.255.248' => 29,
888 '255.255.255.252' => 30,
894 my ($new_value) = @_;
896 $__local_network = $new_value if defined($new_value);
898 return $__local_network if defined($__local_network);
901 my $nodename = PVE
::INotify
::nodename
();
903 my $ip = PVE
::Cluster
::remote_node_ip
($nodename);
905 my $testip = Net
::IP-
>new($ip);
907 my $isv6 = $testip->version == 6;
908 my $routes = $isv6 ? PVE
::ProcFSTools
::read_proc_net_ipv6_route
()
909 : PVE
::ProcFSTools
::read_proc_net_route
();
910 foreach my $entry (@$routes) {
913 $mask = $entry->{prefix
};
915 $mask = $ipv4_mask_hash_localnet->{$entry->{mask
}};
916 next if !defined($mask);
918 my $cidr = "$entry->{dest}/$mask";
919 my $testnet = Net
::IP-
>new($cidr);
920 if ($testnet->overlaps($testip) == $Net::IP
::IP_B_IN_A_OVERLAP
) {
921 $__local_network = $cidr;
928 return $__local_network;
931 # ipset names are limited to 31 characters,
932 # and we use '-v4' or '-v6' to indicate IP versions,
933 # and we use '_swap' suffix for atomic update,
934 # for example PVEFW-${VMID}-${ipset_name}_swap
936 my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
938 sub compute_ipset_chain_name
{
939 my ($vmid, $ipset_name, $ipversion) = @_;
941 $vmid = 0 if !defined($vmid);
943 my $id = "$vmid-${ipset_name}-v$ipversion";
945 if (length($id) > $max_iptables_ipset_name_length) {
946 $id = PVE
::Tools
::fnv31a_hex
($id);
952 sub compute_ipfilter_ipset_name
{
955 return "ipfilter-$iface";
958 sub parse_address_list
{
961 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
962 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
966 if ($str =~ m/^${ip_alias_pattern}$/) {
967 die "alias name too long\n" if length($str) > $max_alias_name_length;
975 foreach my $elem (split(/,/, $str)) {
977 my $ip = Net
::IP-
>new($elem);
979 my $err = Net
::IP
::Error
();
980 die "invalid IP address: $err\n";
982 $iprange = 1 if $elem =~ m/-/;
984 my $new_ipversion = Net
::IP
::ip_is_ipv6
($ip->ip()) ?
6 : 4;
986 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
987 if $ipversion && ($new_ipversion != $ipversion);
989 $ipversion = $new_ipversion;
992 die "you can't use a range in a list\n" if $iprange && $count > 1;
997 sub parse_port_name_number_or_range
{
998 my ($str, $dport) = @_;
1000 my $services = PVE
::Firewall
::get_etc_services
();
1004 foreach my $item (split(/,/, $str)) {
1006 if ($item =~ m/^(\d+):(\d+)$/) {
1007 my ($port1, $port2) = ($1, $2);
1008 die "invalid port '$port1'\n" if $port1 > 65535;
1009 die "invalid port '$port2'\n" if $port2 > 65535;
1010 } elsif ($item =~ m/^(\d+)$/) {
1012 die "invalid port '$port'\n" if $port > 65535;
1014 if ($dport && $icmp_type_names->{$item}) {
1016 } elsif ($dport && $icmpv6_type_names->{$item}) {
1019 die "invalid port '$item'\n" if !$services->{byname
}->{$item};
1024 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
1029 PVE
::JSONSchema
::register_format
('pve-fw-sport-spec', \
&pve_fw_verify_sport_spec
);
1030 sub pve_fw_verify_sport_spec
{
1033 parse_port_name_number_or_range
($portstr, 0);
1038 PVE
::JSONSchema
::register_format
('pve-fw-dport-spec', \
&pve_fw_verify_dport_spec
);
1039 sub pve_fw_verify_dport_spec
{
1042 parse_port_name_number_or_range
($portstr, 1);
1047 PVE
::JSONSchema
::register_format
('pve-fw-addr-spec', \
&pve_fw_verify_addr_spec
);
1048 sub pve_fw_verify_addr_spec
{
1051 parse_address_list
($list);
1056 PVE
::JSONSchema
::register_format
('pve-fw-protocol-spec', \
&pve_fw_verify_protocol_spec
);
1057 sub pve_fw_verify_protocol_spec
{
1060 my $protocols = get_etc_protocols
();
1062 die "unknown protocol '$proto'\n" if $proto &&
1063 !(defined($protocols->{byname
}->{$proto}) ||
1064 defined($protocols->{byid
}->{$proto}));
1070 # helper function for API
1072 sub copy_opject_with_digest
{
1075 my $sha = Digest
::SHA-
>new('sha1');
1078 foreach my $k (sort keys %$object) {
1079 my $v = $object->{$k};
1080 next if !defined($v);
1082 $sha->add($k, ':', $v, "\n");
1085 my $digest = $sha->hexdigest;
1087 $res->{digest
} = $digest;
1089 return wantarray ?
($res, $digest) : $res;
1092 sub copy_list_with_digest
{
1095 my $sha = Digest
::SHA-
>new('sha1');
1098 foreach my $entry (@$list) {
1100 foreach my $k (sort keys %$entry) {
1101 my $v = $entry->{$k};
1102 next if !defined($v);
1104 # Note: digest ignores refs ($rule->{errors})
1105 # since Digest::SHA expects a series of bytes,
1106 # we have to encode the value here to prevent errors when
1107 # using utf8 characters (eg. in comments)
1108 $sha->add($k, ':', encode_utf8
($v), "\n") if !ref($v); ;
1113 my $digest = $sha->hexdigest;
1115 foreach my $entry (@$res) {
1116 $entry->{digest
} = $digest;
1119 return wantarray ?
($res, $digest) : $res;
1122 my $rule_properties = {
1124 description
=> "Update rule at position <pos>.",
1129 digest
=> get_standard_option
('pve-config-digest'),
1133 enum
=> ['in', 'out', 'group'],
1136 description
=> "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
1139 pattern
=> $security_group_name_pattern,
1148 iface
=> get_standard_option
('pve-iface', { optional
=> 1 }),
1150 type
=> 'string', format
=> 'pve-fw-addr-spec',
1154 type
=> 'string', format
=> 'pve-fw-addr-spec',
1158 type
=> 'string', format
=> 'pve-fw-protocol-spec',
1167 type
=> 'string', format
=> 'pve-fw-sport-spec',
1171 type
=> 'string', format
=> 'pve-fw-dport-spec',
1180 sub add_rule_properties
{
1181 my ($properties) = @_;
1183 foreach my $k (keys %$rule_properties) {
1184 my $h = $rule_properties->{$k};
1185 # copy data, so that we can modify later without side effects
1186 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
1192 sub delete_rule_properties
{
1193 my ($rule, $delete_str) = @_;
1195 foreach my $opt (PVE
::Tools
::split_list
($delete_str)) {
1196 raise_param_exc
({ 'delete' => "no such property ('$opt')"})
1197 if !defined($rule_properties->{$opt});
1198 raise_param_exc
({ 'delete' => "unable to delete required property '$opt'"})
1199 if $opt eq 'type' || $opt eq 'action';
1200 delete $rule->{$opt};
1206 my $apply_macro = sub {
1207 my ($macro_name, $param, $verify, $ipversion) = @_;
1209 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1210 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1212 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1213 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1216 # skip macros which are specific to another ipversion
1217 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1218 return if $ipversion != $required;
1223 foreach my $templ (@$macro_rules) {
1225 my $param_used = {};
1226 foreach my $k (keys %$templ) {
1227 my $v = $templ->{$k};
1228 if ($v eq 'PARAM') {
1230 $param_used->{$k} = 1;
1231 } elsif ($v eq 'DEST') {
1232 $v = $param->{dest
};
1233 $param_used->{dest
} = 1;
1234 } elsif ($v eq 'SOURCE') {
1235 $v = $param->{source
};
1236 $param_used->{source
} = 1;
1240 my $msg = "missing parameter '$k' in macro '$macro_name'";
1241 raise_param_exc
({ macro => $msg }) if $verify;
1246 foreach my $k (keys %$param) {
1247 next if $k eq 'macro';
1248 next if !defined($param->{$k});
1249 next if $param_used->{$k};
1250 if (defined($rule->{$k})) {
1251 if ($rule->{$k} ne $param->{$k}) {
1252 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
1253 raise_param_exc
({ $k => $msg }) if $verify;
1257 $rule->{$k} = $param->{$k};
1260 push @$rules, $rule;
1266 my $rule_env_iface_lookup = {
1275 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
1277 my $allow_groups = $rule_env eq 'group' ?
0 : 1;
1279 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1280 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
1282 my $errors = $rule->{errors
} || {};
1284 my $error_count = 0;
1286 my $add_error = sub {
1287 my ($param, $msg) = @_;
1289 raise_param_exc
({ $param => $msg }) if !$noerr;
1291 $errors->{$param} = $msg if !$errors->{$param};
1295 my $set_ip_version = sub {
1298 die "detected mixed ipv4/ipv6 adresses in rule\n"
1299 if $ipversion && ($vers != $ipversion);
1304 my $check_ipset_or_alias_property = sub {
1305 my ($name, $expected_ipversion) = @_;
1307 if (my $value = $rule->{$name}) {
1308 if ($value =~ m/^\+/) {
1309 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
1310 &$add_error($name, "no such ipset '$1'")
1311 if !($cluster_conf->{ipset
}->{$1} || ($fw_conf && $fw_conf->{ipset
}->{$1}));
1314 &$add_error($name, "invalid ipset name '$value'");
1316 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1317 my $alias = lc($value);
1318 &$add_error($name, "no such alias '$value'")
1319 if !($cluster_conf->{aliases
}->{$alias} || ($fw_conf && $fw_conf->{aliases
}->{$alias}));
1320 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1321 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1323 &$set_ip_version($e->{ipversion
});
1328 my $type = $rule->{type
};
1329 my $action = $rule->{action
};
1331 &$add_error('type', "missing property") if !$type;
1332 &$add_error('action', "missing property") if !$action;
1335 if ($type eq 'in' || $type eq 'out') {
1336 &$add_error('action', "unknown action '$action'")
1337 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1338 } elsif ($type eq 'group') {
1339 &$add_error('type', "security groups not allowed")
1341 &$add_error('action', "invalid characters in security group name")
1342 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1344 &$add_error('type', "unknown rule type '$type'");
1348 if ($rule->{iface
}) {
1349 &$add_error('type', "parameter -i not allowed for this rule type")
1351 eval { PVE
::JSONSchema
::pve_verify_iface
($rule->{iface
}); };
1352 &$add_error('iface', $@) if $@;
1353 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
1354 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1355 if $rule->{iface
} !~ m/^net(\d+)$/;
1359 if ($rule->{macro}) {
1360 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1361 $rule->{macro} = $preferred_name;
1363 &$add_error('macro', "unknown macro '$rule->{macro}'");
1367 if ($rule->{proto
}) {
1368 eval { pve_fw_verify_protocol_spec
($rule->{proto
}); };
1369 &$add_error('proto', $@) if $@;
1370 &$set_ip_version(4) if $rule->{proto
} eq 'icmp';
1371 &$set_ip_version(6) if $rule->{proto
} eq 'icmpv6';
1374 if ($rule->{dport
}) {
1375 eval { parse_port_name_number_or_range
($rule->{dport
}, 1); };
1376 &$add_error('dport', $@) if $@;
1377 &$add_error('proto', "missing property - 'dport' requires this property")
1381 if ($rule->{sport
}) {
1382 eval { parse_port_name_number_or_range
($rule->{sport
}, 0); };
1383 &$add_error('sport', $@) if $@;
1384 &$add_error('proto', "missing property - 'sport' requires this property")
1388 if ($rule->{source
}) {
1390 my $source_ipversion = parse_address_list
($rule->{source
});
1391 &$set_ip_version($source_ipversion);
1393 &$add_error('source', $@) if $@;
1394 &$check_ipset_or_alias_property('source', $ipversion);
1397 if ($rule->{dest
}) {
1399 my $dest_ipversion = parse_address_list
($rule->{dest
});
1400 &$set_ip_version($dest_ipversion);
1402 &$add_error('dest', $@) if $@;
1403 &$check_ipset_or_alias_property('dest', $ipversion);
1406 $rule->{ipversion
} = $ipversion if $ipversion;
1408 if ($rule->{macro} && !$error_count) {
1409 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
1411 if (ref($err) eq "PVE::Exception" && $err->{errors
}) {
1412 my $eh = $err->{errors
};
1413 foreach my $p (keys %$eh) {
1414 &$add_error($p, $eh->{$p});
1417 &$add_error('macro', "$err");
1422 $rule->{errors
} = $errors if $error_count;
1427 sub copy_rule_data
{
1428 my ($rule, $param) = @_;
1430 foreach my $k (keys %$rule_properties) {
1431 if (defined(my $v = $param->{$k})) {
1432 if ($v eq '' || $v eq '-') {
1443 sub rules_modify_permissions
{
1444 my ($rule_env) = @_;
1446 if ($rule_env eq 'host') {
1448 check
=> ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1450 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1452 check
=> ['perm', '/', [ 'Sys.Modify' ]],
1454 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1456 check
=> ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1463 sub rules_audit_permissions
{
1464 my ($rule_env) = @_;
1466 if ($rule_env eq 'host') {
1468 check
=> ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1470 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1472 check
=> ['perm', '/', [ 'Sys.Audit' ]],
1474 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1476 check
=> ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1484 my $bridge_firewall_enabled = 0;
1486 sub enable_bridge_firewall
{
1488 return if $bridge_firewall_enabled; # only once
1490 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1491 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
1493 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1494 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/ipv4/tcp_syncookies", "1");
1496 $bridge_firewall_enabled = 1;
1499 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
1501 sub iptables_restore_cmdlist
{
1504 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist, errmsg
=> "iptables_restore_cmdlist");
1507 sub ip6tables_restore_cmdlist
{
1510 run_command
("/sbin/ip6tables-restore -n", input
=> $cmdlist, errmsg
=> "iptables_restore_cmdlist");
1513 sub ipset_restore_cmdlist
{
1516 run_command
("/sbin/ipset restore", input
=> $cmdlist, errmsg
=> "ipset_restore_cmdlist");
1519 sub iptables_get_chains
{
1520 my ($iptablescmd) = @_;
1522 $iptablescmd = "iptables" if !$iptablescmd;
1526 # check what chains we want to track
1527 my $is_pvefw_chain = sub {
1530 return 1 if $name =~ m/^PVEFW-\S+$/;
1532 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
1534 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
1536 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
1537 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
1549 return if $line =~ m/^#/;
1550 return if $line =~ m/^\s*$/;
1552 if ($line =~ m/^\*(\S+)$/) {
1557 return if $table ne 'filter';
1559 if ($line =~ m/^:(\S+)\s/) {
1561 return if !&$is_pvefw_chain($chain);
1562 $res->{$chain} = "unknown";
1563 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
1564 my ($chain, $sig) = ($1, $2);
1565 return if !&$is_pvefw_chain($chain);
1566 $res->{$chain} = $sig;
1567 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1570 # simply ignore the rest
1575 run_command
("/sbin/$iptablescmd-save", outfunc
=> $parser);
1577 return wantarray ?
($res, $hooks) : $res;
1580 sub iptables_chain_digest
{
1582 my $digest = Digest
::SHA-
>new('sha1');
1583 foreach my $rule (@$rules) { # order is important
1584 $digest->add($rule);
1586 return $digest->b64digest;
1589 sub ipset_chain_digest
{
1592 my $digest = Digest
::SHA-
>new('sha1');
1593 foreach my $rule (sort @$rules) { # note: sorted
1594 $digest->add($rule);
1596 return $digest->b64digest;
1599 sub ipset_get_chains
{
1607 return if $line =~ m/^#/;
1608 return if $line =~ m/^\s*$/;
1609 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
1611 $line =~ s/\s+$//; # delete trailing white space
1612 push @{$chains->{$chain}}, $line;
1614 # simply ignore the rest
1619 run_command
("/sbin/ipset save", outfunc
=> $parser);
1621 # compute digest for each chain
1622 foreach my $chain (keys %$chains) {
1623 $res->{$chain} = ipset_chain_digest
($chains->{$chain});
1629 sub ruleset_generate_cmdstr
{
1630 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
1632 return if defined($rule->{enable
}) && !$rule->{enable
};
1633 return if $rule->{errors
};
1635 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1637 my $nbdport = defined($rule->{dport
}) ? parse_port_name_number_or_range
($rule->{dport
}, 1) : 0;
1638 my $nbsport = defined($rule->{sport
}) ? parse_port_name_number_or_range
($rule->{sport
}, 0) : 0;
1642 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in
};
1643 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out
};
1645 my $source = $rule->{source
};
1646 my $dest = $rule->{dest
};
1649 if ($source =~ m/^\+/) {
1650 if ($source =~ m/^\+(${ipset_name_pattern})$/) {
1652 if ($fw_conf && $fw_conf->{ipset
}->{$name}) {
1653 my $ipset_chain = compute_ipset_chain_name
($fw_conf->{vmid
}, $name, $ipversion);
1654 push @cmd, "-m set --match-set ${ipset_chain} src";
1655 } elsif ($cluster_conf && $cluster_conf->{ipset
}->{$name}) {
1656 my $ipset_chain = compute_ipset_chain_name
(0, $name, $ipversion);
1657 push @cmd, "-m set --match-set ${ipset_chain} src";
1659 die "no such ipset '$name'\n";
1662 die "invalid security group name '$source'\n";
1664 } elsif ($source =~ m/^${ip_alias_pattern}$/){
1665 my $alias = lc($source);
1666 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1667 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1668 die "no such alias '$source'\n" if !$e;
1669 push @cmd, "-s $e->{cidr}";
1670 } elsif ($source =~ m/\-/){
1671 push @cmd, "-m iprange --src-range $source";
1673 push @cmd, "-s $source";
1678 if ($dest =~ m/^\+/) {
1679 if ($dest =~ m/^\+(${ipset_name_pattern})$/) {
1681 if ($fw_conf && $fw_conf->{ipset
}->{$name}) {
1682 my $ipset_chain = compute_ipset_chain_name
($fw_conf->{vmid
}, $name, $ipversion);
1683 push @cmd, "-m set --match-set ${ipset_chain} dst";
1684 } elsif ($cluster_conf && $cluster_conf->{ipset
}->{$name}) {
1685 my $ipset_chain = compute_ipset_chain_name
(0, $name, $ipversion);
1686 push @cmd, "-m set --match-set ${ipset_chain} dst";
1688 die "no such ipset '$name'\n";
1691 die "invalid security group name '$dest'\n";
1693 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
1694 my $alias = lc($dest);
1695 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1696 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1697 die "no such alias '$dest'\n" if !$e;
1698 push @cmd, "-d $e->{cidr}";
1699 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
1700 push @cmd, "-m iprange --dst-range $dest";
1702 push @cmd, "-d $dest";
1706 if ($rule->{proto
}) {
1707 push @cmd, "-p $rule->{proto}";
1710 $multiport++ if $nbdport > 1;
1711 $multiport++ if $nbsport > 1;
1713 push @cmd, "--match multiport" if $multiport;
1715 die "multiport: option '--sports' cannot be used together with '--dports'\n"
1716 if ($multiport == 2) && ($rule->{dport
} ne $rule->{sport
});
1718 if ($rule->{dport
}) {
1719 if ($rule->{proto
} && $rule->{proto
} eq 'icmp') {
1720 # Note: we use dport to store --icmp-type
1721 die "unknown icmp-type '$rule->{dport}'\n"
1722 if $rule->{dport
} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport
}});
1723 push @cmd, "-m icmp --icmp-type $rule->{dport}";
1724 } elsif ($rule->{proto
} && $rule->{proto
} eq 'icmpv6') {
1725 # Note: we use dport to store --icmpv6-type
1726 die "unknown icmpv6-type '$rule->{dport}'\n"
1727 if $rule->{dport
} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport
}});
1728 push @cmd, "-m icmpv6 --icmpv6-type $rule->{dport}";
1731 if ($multiport == 2) {
1732 push @cmd, "--ports $rule->{dport}";
1734 push @cmd, "--dports $rule->{dport}";
1737 push @cmd, "--dport $rule->{dport}";
1742 if ($rule->{sport
}) {
1744 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
1746 push @cmd, "--sport $rule->{sport}";
1749 } elsif ($rule->{dport
} || $rule->{sport
}) {
1750 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport
};
1751 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport
};
1754 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
1756 if (my $action = $rule->{action
}) {
1757 $action = $actions->{$action} if defined($actions->{$action});
1758 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
1759 push @cmd, $goto ?
"-g $action" : "-j $action";
1762 return scalar(@cmd) ?
join(' ', @cmd) : undef;
1765 sub ruleset_generate_rule
{
1766 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
1770 if ($rule->{macro}) {
1771 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
1776 # update all or nothing
1779 foreach my $tmp (@$rules) {
1780 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $ipversion, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
1781 push @cmds, $cmdstr;
1785 foreach my $cmdstr (@cmds) {
1786 ruleset_addrule
($ruleset, $chain, $cmdstr);
1790 sub ruleset_generate_rule_insert
{
1791 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto) = @_;
1793 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1795 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $ipversion, $rule, $actions, $goto)) {
1796 ruleset_insertrule
($ruleset, $chain, $cmdstr);
1800 sub ruleset_create_chain
{
1801 my ($ruleset, $chain) = @_;
1803 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
1804 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
1806 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1808 $ruleset->{$chain} = [];
1811 sub ruleset_chain_exist
{
1812 my ($ruleset, $chain) = @_;
1814 return $ruleset->{$chain} ?
1 : undef;
1817 sub ruleset_addrule
{
1818 my ($ruleset, $chain, $rule) = @_;
1820 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1822 push @{$ruleset->{$chain}}, "-A $chain $rule";
1825 sub ruleset_insertrule
{
1826 my ($ruleset, $chain, $rule) = @_;
1828 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1830 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1833 sub get_log_rule_base
{
1834 my ($chain, $vmid, $msg, $loglevel) = @_;
1836 die "internal error - no log level" if !defined($loglevel);
1838 $vmid = 0 if !defined($vmid);
1840 # Note: we use special format for prefix to pass further
1841 # info to log daemon (VMID, LOGVELEL and CHAIN)
1843 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1846 sub ruleset_addlog {
1847 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1849 return if !defined($loglevel);
1851 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1853 $logrule = "$rule $logrule" if defined($rule);
1855 ruleset_addrule($ruleset, $chain, $logrule);
1858 sub ruleset_add_chain_policy {
1859 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
1861 if ($policy eq 'ACCEPT') {
1863 ruleset_generate_rule($ruleset, $chain, $ipversion, { action => 'ACCEPT' },
1864 { ACCEPT => $accept_action});
1866 } elsif ($policy eq 'DROP') {
1868 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop
");
1870 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1872 ruleset_addrule($ruleset, $chain, "-j DROP
");
1873 } elsif ($policy eq 'REJECT') {
1874 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject
");
1876 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1878 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject
");
1881 die "internal error
: unknown policy
'$policy'";
1885 sub ruleset_chain_add_ndp {
1886 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
1887 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
1889 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type router-solicitation
$accept");
1890 if ($direction ne 'OUT' || $options->{radv}) {
1891 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type router-advertisement
$accept");
1893 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type neighbor-solicitation
$accept");
1894 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type neighbor-advertisement
$accept");
1897 sub ruleset_chain_add_conn_filters {
1898 my ($ruleset, $chain, $accept) = @_;
1900 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1901 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j
$accept");
1904 sub ruleset_chain_add_input_filters {
1905 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
1907 if ($cluster_conf->{ipset}->{blacklist}){
1908 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist
")) {
1909 ruleset_create_chain($ruleset, "PVEFW-blacklist
");
1910 ruleset_addlog($ruleset, "PVEFW-blacklist
", 0, "DROP
: ", $loglevel) if $loglevel;
1911 ruleset_addrule($ruleset, "PVEFW-blacklist
", "-j DROP
");
1913 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1914 ruleset_addrule($ruleset, $chain, "-m set
--match-set
${ipset_chain
} src
-j PVEFW-blacklist
");
1917 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1918 if ($ipversion == 4) {
1919 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1923 if ($options->{tcpflags}) {
1924 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1928 sub ruleset_create_vm_chain {
1929 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
1931 ruleset_create_chain($ruleset, $chain);
1932 my $accept = generate_nfqueue($options);
1934 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
1935 if ($ipversion == 4) {
1936 if ($direction eq 'OUT') {
1937 ruleset_generate_rule($ruleset, $chain, $ipversion,
1938 { action => 'PVEFW-SET-ACCEPT-MARK',
1939 proto => 'udp', sport => 68, dport => 67 });
1941 ruleset_generate_rule($ruleset, $chain, $ipversion,
1942 { action => 'ACCEPT',
1943 proto => 'udp', sport => 67, dport => 68 });
1945 } elsif ($ipversion == 6) {
1946 if ($direction eq 'OUT') {
1947 ruleset_generate_rule($ruleset, $chain, $ipversion,
1948 { action => 'PVEFW-SET-ACCEPT-MARK',
1949 proto => 'udp', sport => 546, dport => 547 });
1951 ruleset_generate_rule($ruleset, $chain, $ipversion,
1952 { action => 'ACCEPT',
1953 proto => 'udp', sport => 547, dport => 546 });
1959 if ($direction eq 'OUT') {
1960 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1961 ruleset_addrule($ruleset, $chain, "-m mac
! --mac-source
$macaddr -j DROP
");
1963 if ($ipversion == 6 && !$options->{radv}) {
1964 ruleset_addrule($ruleset, $chain, '-p icmpv6 --icmpv6-type router-advertisement -j DROP');
1966 if ($ipfilter_ipset) {
1967 ruleset_addrule($ruleset, $chain, "-m set
! --match-set
$ipfilter_ipset src
-j DROP
");
1969 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1972 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j
$accept";
1973 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
1976 sub ruleset_add_group_rule {
1977 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
1979 my $group = $rule->{action};
1980 my $group_chain = "GROUP-
$group-$direction";
1981 if(!ruleset_chain_exist($ruleset, $group_chain)){
1982 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
1985 if ($direction eq 'OUT' && $rule->{iface_out}) {
1986 ruleset_addrule($ruleset, $chain, "-o
$rule->{iface_out
} -j
$group_chain");
1987 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1988 ruleset_addrule($ruleset, $chain, "-i
$rule->{iface_in
} -j
$group_chain");
1990 ruleset_addrule($ruleset, $chain, "-j
$group_chain");
1993 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j
$action");
1996 sub ruleset_generate_vm_rules {
1997 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion) = @_;
1999 my $lc_direction = lc($direction);
2001 my $in_accept = generate_nfqueue($options);
2003 foreach my $rule (@$rules) {
2004 next if $rule->{iface} && $rule->{iface} ne $netid;
2005 next if !$rule->{enable} || $rule->{errors};
2006 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2008 if ($rule->{type} eq 'group') {
2009 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
2010 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
2012 next if $rule->{type} ne $lc_direction;
2014 if ($direction eq 'OUT') {
2015 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2016 { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" },
2017 undef, $cluster_conf, $vmfw_conf);
2019 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2020 { ACCEPT => $in_accept , REJECT => "PVEFW-reject
" },
2021 undef, $cluster_conf, $vmfw_conf);
2029 sub generate_nfqueue {
2032 if ($options->{ips}) {
2033 my $action = "NFQUEUE
";
2034 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2035 if (defined($3) && defined($1)) {
2036 $action .= " --queue-balance
$1:$3";
2037 } elsif (defined($1)) {
2038 $action .= " --queue-num
$1";
2041 $action .= " --queue-bypass
" if $feature_ipset_nomatch; #need kernel 3.10
2048 sub ruleset_generate_vm_ipsrules {
2049 my ($ruleset, $options, $direction, $iface) = @_;
2051 if ($options->{ips} && $direction eq 'IN') {
2052 my $nfqueue = generate_nfqueue($options);
2054 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS
")) {
2055 ruleset_create_chain($ruleset, "PVEFW-IPS
");
2058 ruleset_addrule($ruleset, "PVEFW-IPS
", "-m physdev
--physdev-out
$iface --physdev-is-bridged
-j
$nfqueue");
2062 sub generate_tap_rules_direction {
2063 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
2065 my $lc_direction = lc($direction);
2067 my $rules = $vmfw_conf->{rules};
2069 my $options = $vmfw_conf->{options};
2070 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
2072 my $tapchain = "$iface-$direction";
2074 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
2075 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
2076 if $vmfw_conf->{ipset}->{$ipfilter_name};
2078 # create chain with mac and ip filter
2079 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
2081 if ($options->{enable}) {
2082 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion);
2084 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
2089 if ($direction eq 'OUT') {
2090 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2092 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
2095 my $accept = generate_nfqueue($options);
2096 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
2097 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
2099 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : 'ACCEPT';
2100 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
2103 # plug the tap chain to bridge chain
2104 if ($direction eq 'IN') {
2105 ruleset_addrule($ruleset, "PVEFW-FWBR-IN
",
2106 "-m physdev
--physdev-is-bridged
--physdev-out
$iface -j
$tapchain");
2108 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT
",
2109 "-m physdev
--physdev-is-bridged
--physdev-in
$iface -j
$tapchain");
2113 sub enable_host_firewall {
2114 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
2116 my $options = $hostfw_conf->{options};
2117 my $cluster_options = $cluster_conf->{options};
2118 my $rules = $hostfw_conf->{rules};
2119 my $cluster_rules = $cluster_conf->{rules};
2121 # host inbound firewall
2122 my $chain = "PVEFW-HOST-IN
";
2123 ruleset_create_chain($ruleset, $chain);
2125 my $loglevel = get_option_log_level($options, "log_level_in
");
2127 ruleset_addrule($ruleset, $chain, "-i lo
-j ACCEPT
");
2129 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2130 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
2131 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
2133 # we use RETURN because we need to check also tap rules
2134 my $accept_action = 'RETURN';
2136 ruleset_addrule($ruleset, $chain, "-p igmp
-j
$accept_action"); # important for multicast
2138 # add host rules first, so that cluster wide rules can be overwritten
2139 foreach my $rule (@$rules, @$cluster_rules) {
2140 next if !$rule->{enable} || $rule->{errors};
2141 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2143 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
2146 if ($rule->{type} eq 'group') {
2147 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
2148 } elsif ($rule->{type} eq 'in') {
2149 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2150 { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" },
2151 undef, $cluster_conf, $hostfw_conf);
2155 delete $rule->{iface_in};
2158 # allow standard traffic for management ipset (includes cluster network)
2159 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management
", $ipversion);
2160 my $mngmntsrc = "-m set
--match-set
${mngmnt_ipset_chain
} src
";
2161 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
8006 -j
$accept_action"); # PVE API
2162 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
5900:5999 -j
$accept_action"); # PVE VNC Console
2163 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
3128 -j
$accept_action"); # SPICE Proxy
2164 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
22 -j
$accept_action"); # SSH
2166 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2167 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
2170 if ($localnet && ($ipversion == $localnet_ver)) {
2171 my $corosync_rule = "-p udp
--dport
5404:5405 -j
$accept_action";
2172 ruleset_addrule($ruleset, $chain, "-s
$localnet -d
$localnet $corosync_rule");
2173 ruleset_addrule($ruleset, $chain, "-s
$localnet -m addrtype
--dst-type MULTICAST
$corosync_rule");
2176 # implement input policy
2177 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
2178 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
2180 # host outbound firewall
2181 $chain = "PVEFW-HOST-OUT
";
2182 ruleset_create_chain($ruleset, $chain);
2184 $loglevel = get_option_log_level($options, "log_level_out
");
2186 ruleset_addrule($ruleset, $chain, "-o lo
-j ACCEPT
");
2188 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2190 # we use RETURN because we may want to check other thigs later
2191 $accept_action = 'RETURN';
2192 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j
$accept_action");
2194 ruleset_addrule($ruleset, $chain, "-p igmp
-j
$accept_action"); # important for multicast
2196 # add host rules first, so that cluster wide rules can be overwritten
2197 foreach my $rule (@$rules, @$cluster_rules) {
2198 next if !$rule->{enable} || $rule->{errors};
2199 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2201 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
2203 if ($rule->{type} eq 'group') {
2204 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
2205 } elsif ($rule->{type} eq 'out') {
2206 ruleset_generate_rule($ruleset, $chain, $ipversion,
2207 $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" },
2208 undef, $cluster_conf, $hostfw_conf);
2212 delete $rule->{iface_out};
2215 # allow standard traffic on cluster network
2216 if ($localnet && ($ipversion == $localnet_ver)) {
2217 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
8006 -j
$accept_action"); # PVE API
2218 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
22 -j
$accept_action"); # SSH
2219 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
5900:5999 -j
$accept_action"); # PVE VNC Console
2220 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
3128 -j
$accept_action"); # SPICE Proxy
2222 my $corosync_rule = "-p udp
--dport
5404:5405 -j
$accept_action";
2223 ruleset_addrule($ruleset, $chain, "-d
$localnet $corosync_rule");
2224 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
$corosync_rule");
2227 # implement output policy
2228 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
2229 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
2231 ruleset_addrule($ruleset, "PVEFW-OUTPUT
", "-j PVEFW-HOST-OUT
");
2232 ruleset_addrule($ruleset, "PVEFW-INPUT
", "-j PVEFW-HOST-IN
");
2235 sub generate_group_rules {
2236 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
2238 my $rules = $cluster_conf->{groups}->{$group};
2241 warn "no such security group
'$group'\n";
2242 $rules = []; # create empty chain
2245 my $chain = "GROUP-
${group
}-IN
";
2247 ruleset_create_chain($ruleset, $chain);
2248 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
2250 foreach my $rule (@$rules) {
2251 next if $rule->{type} ne 'in';
2252 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
2253 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2254 { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" },
2255 undef, $cluster_conf);
2258 $chain = "GROUP-
${group
}-OUT
";
2260 ruleset_create_chain($ruleset, $chain);
2261 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
2263 foreach my $rule (@$rules) {
2264 next if $rule->{type} ne 'out';
2265 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
2266 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2267 # check also other tap rules later
2268 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2269 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject
" },
2270 undef, $cluster_conf);
2275 my $valid_netdev_names = {};
2276 for (my $i = 0; $i < $MAX_NETS; $i++) {
2277 $valid_netdev_names->{"net
$i"} = 1;
2281 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
2283 my $orig_line = $line;
2287 # we can add single line comments to the end of the rule
2288 if ($line =~ s/#\s*(.*?)\s*$//) {
2289 $rule->{comment} = decode('utf8', $1);
2292 # we can disable a rule when prefixed with '|'
2294 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
2296 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2297 die "unable to parse rule
: $line\n";
2299 $rule->{type} = lc($1);
2300 $rule->{action} = $2;
2302 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2303 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2304 $rule->{macro} = $1;
2305 $rule->{action} = $2;
2309 while (length($line)) {
2310 if ($line =~ s/^-i (\S+)\s*//) {
2311 $rule->{iface} = $1;
2315 last if $rule->{type} eq 'group';
2317 if ($line =~ s/^-p (\S+)\s*//) {
2318 $rule->{proto} = $1;
2322 if ($line =~ s/^-dport (\S+)\s*//) {
2323 $rule->{dport} = $1;
2327 if ($line =~ s/^-sport (\S+)\s*//) {
2328 $rule->{sport} = $1;
2331 if ($line =~ s/^-source (\S+)\s*//) {
2332 $rule->{source} = $1;
2335 if ($line =~ s/^-dest (\S+)\s*//) {
2343 die "unable to parse rule parameters
: $line\n" if length($line);
2345 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
2346 if ($verbose && $rule->{errors}) {
2347 warn "$prefix - errors
in rule parameters
: $orig_line\n";
2348 foreach my $p (keys %{$rule->{errors}}) {
2349 warn " $p: $rule->{errors
}->{$p}\n";
2356 sub parse_vmfw_option {
2361 my $loglevels = "emerg
|alert
|crit
|err
|warning
|notice
|info
|debug
|nolog
";
2363 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ips):\s*(0|1)\s*$/i) {
2366 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2368 $value = $2 ? lc($3) : '';
2369 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2372 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2376 die "can
't parse option '$line'\n"
2379 return ($opt, $value);
2382 sub parse_hostfw_option {
2387 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2389 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp):\s*(0|1)\s*$/i) {
2392 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2394 $value = $2 ? lc($3) : '';
2395 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
2399 die "can't parse option
'$line'\n"
2402 return ($opt, $value);
2405 sub parse_clusterfw_option {
2410 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
2413 if (($value > 1) && ((time() - $value) > 60)) {
2416 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2420 die "can
't parse option '$line'\n"
2423 return ($opt, $value);
2427 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2429 my $alias = lc($cidr);
2430 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
2431 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
2433 die "no such alias '$cidr'\n" if !$e;;
2435 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
2438 sub parse_ip_or_cidr {
2443 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2446 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2450 die "value does not look like a valid IP address or CIDR network\n";
2453 return wantarray ? ($cidr, $ipversion) : $cidr;
2459 # we can add single line comments to the end of the line
2460 my $comment = decode('utf8
', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2462 if ($line =~ m/^(\S+)\s(\S+)$/) {
2463 my ($name, $cidr) = ($1, $2);
2466 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2471 ipversion => $ipversion,
2473 $data->{comment} = $comment if $comment;
2480 sub generic_fw_config_parser {
2481 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
2486 my $res = $empty_conf;
2488 while (defined(my $line = <$fh>)) {
2489 next if $line =~ m/^#/;
2490 next if $line =~ m/^\s*$/;
2494 my $linenr = $fh->input_line_number();
2495 my $prefix = "$filename (line $linenr)";
2497 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
2498 $section = 'options
';
2502 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
2503 $section = 'aliases
';
2507 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
2508 $section = 'groups
';
2512 die "security group name too long\n" if length($group) > $max_group_name_length;
2513 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2516 ($section, $group, $comment) = undef;
2517 warn "$prefix: $err";
2521 $res->{$section}->{$group} = [];
2522 $res->{group_comments}->{$group} = decode('utf8
', $comment)
2527 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
2532 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
2537 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2538 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2541 ($section, $group, $comment) = undef;
2542 warn "$prefix: $err";
2546 $res->{$section}->{$group} = [];
2547 $res->{ipset_comments}->{$group} = decode('utf8
', $comment)
2553 warn "$prefix: skip line - no section\n";
2557 if ($section eq 'options
') {
2560 if ($rule_env eq 'cluster
') {
2561 ($opt, $value) = parse_clusterfw_option($line);
2562 } elsif ($rule_env eq 'host
') {
2563 ($opt, $value) = parse_hostfw_option($line);
2565 ($opt, $value) = parse_vmfw_option($line);
2567 $res->{options}->{$opt} = $value;
2569 warn "$prefix: $@" if $@;
2570 } elsif ($section eq 'aliases
') {
2572 my $data = parse_alias($line);
2573 $res->{aliases}->{lc($data->{name})} = $data;
2575 warn "$prefix: $@" if $@;
2576 } elsif ($section eq 'rules
') {
2578 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
2580 warn "$prefix: $err";
2583 push @{$res->{$section}}, $rule;
2584 } elsif ($section eq 'groups
') {
2586 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group
', $verbose); };
2588 warn "$prefix: $err";
2591 push @{$res->{$section}->{$group}}, $rule;
2592 } elsif ($section eq 'ipset
') {
2593 # we can add single line comments to the end of the rule
2594 my $comment = decode('utf8
', $1) if $line =~ s/#\s*(.*?)\s*$//;
2596 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2601 if ($nomatch && !$feature_ipset_nomatch) {
2602 $errors->{nomatch} = "nomatch not supported by kernel";
2606 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2607 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2609 $cidr = parse_ip_or_cidr($cidr);
2614 $errors->{cidr} = $err;
2617 my $entry = { cidr => $cidr };
2618 $entry->{nomatch} = 1 if $nomatch;
2619 $entry->{comment} = $comment if $comment;
2620 $entry->{errors} = $errors if $errors;
2622 if ($verbose && $errors) {
2623 warn "$prefix - errors in ipset '$group': $line\n";
2624 foreach my $p (keys %{$errors}) {
2625 warn " $p: $errors->{$p}\n";
2629 push @{$res->{$section}->{$group}}, $entry;
2631 warn "$prefix: skip line - unknown section\n";
2639 sub parse_hostfw_config {
2640 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2642 my $empty_conf = { rules => [], options => {}};
2644 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host
');
2647 sub parse_vmfw_config {
2648 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2655 ipset_comments => {},
2658 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
2661 sub parse_clusterfw_config {
2662 my ($filename, $fh, $verbose) = @_;
2672 group_comments => {},
2674 ipset_comments => {},
2677 return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster
');
2681 my ($code, @param) = @_;
2685 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2692 sub read_local_vm_config {
2697 my $vmdata = { qemu => $qemu, lxc => $lxc };
2699 my $vmlist = PVE::Cluster::get_vmlist();
2700 return $vmdata if !$vmlist || !$vmlist->{ids};
2701 my $ids = $vmlist->{ids};
2703 foreach my $vmid (keys %$ids) {
2704 next if !$vmid; # skip VE0
2705 my $d = $ids->{$vmid};
2706 next if !$d->{node} || $d->{node} ne $nodename;
2707 next if !$d->{type};
2708 if ($d->{type} eq 'qemu
') {
2709 if ($have_qemu_server) {
2710 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2711 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2712 $qemu->{$vmid} = $conf;
2715 } elsif ($d->{type} eq 'lxc
') {
2717 my $cfspath = PVE::LXC::cfs_config_path($vmid);
2718 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2719 $lxc->{$vmid} = $conf;
2728 sub load_vmfw_conf {
2729 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
2733 $dir = $pvefw_conf_dir if !defined($dir);
2735 my $filename = "$dir/$vmid.fw";
2736 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2737 $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
2738 $vmfw_conf->{vmid} = $vmid;
2744 my $format_rules = sub {
2745 my ($rules, $allow_iface) = @_;
2749 foreach my $rule (@$rules) {
2750 if ($rule->{type} eq 'in' || $rule->{type} eq 'out
' || $rule->{type} eq 'group
') {
2751 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2752 $raw .= uc($rule->{type});
2753 if ($rule->{macro}) {
2754 $raw .= " $rule->{macro}($rule->{action})";
2756 $raw .= " " . $rule->{action};
2758 if ($allow_iface && $rule->{iface}) {
2759 $raw .= " -i $rule->{iface}";
2762 if ($rule->{type} ne 'group
') {
2763 $raw .= " -source $rule->{source}" if $rule->{source};
2764 $raw .= " -dest $rule->{dest}" if $rule->{dest};
2765 $raw .= " -p $rule->{proto}" if $rule->{proto};
2766 $raw .= " -dport $rule->{dport}" if $rule->{dport};
2767 $raw .= " -sport $rule->{sport}" if $rule->{sport};
2770 $raw .= " # " . encode('utf8
', $rule->{comment})
2771 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2774 die "unknown rule type '$rule->{type
}'";
2781 my $format_options = sub {
2786 $raw .= "[OPTIONS]\n\n";
2787 foreach my $opt (keys %$options) {
2788 $raw .= "$opt: $options->{$opt}\n";
2795 my $format_aliases = sub {
2800 $raw .= "[ALIASES]\n\n";
2801 foreach my $k (keys %$aliases) {
2802 my $e = $aliases->{$k};
2803 $raw .= "$e->{name} $e->{cidr}";
2804 $raw .= " # " . encode('utf8
', $e->{comment})
2805 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2813 my $format_ipsets = sub {
2818 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
2819 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
2820 my $utf8comment = encode('utf8
', $comment);
2821 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
2823 $raw .= "[IPSET $ipset]\n\n";
2825 my $options = $fw_conf->{ipset}->{$ipset};
2828 foreach my $entry (@$options) {
2829 $nethash->{$entry->{cidr}} = $entry;
2832 foreach my $cidr (sort keys %$nethash) {
2833 my $entry = $nethash->{$cidr};
2834 my $line = $entry->{nomatch} ? '!' : '';
2835 $line .= $entry->{cidr};
2836 $line .= " # " . encode('utf8
', $entry->{comment})
2837 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2847 sub save_vmfw_conf {
2848 my ($vmid, $vmfw_conf) = @_;
2852 my $options = $vmfw_conf->{options};
2853 $raw .= &$format_options($options) if $options && scalar(keys %$options);
2855 my $aliases = $vmfw_conf->{aliases};
2856 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
2858 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
2860 my $rules = $vmfw_conf->{rules} || [];
2861 if ($rules && scalar(@$rules)) {
2862 $raw .= "[RULES]\n\n";
2863 $raw .= &$format_rules($rules, 1);
2867 my $filename = "$pvefw_conf_dir/$vmid.fw";
2869 mkdir $pvefw_conf_dir;
2870 PVE::Tools::file_set_contents($filename, $raw);
2876 sub remove_vmfw_conf {
2879 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
2881 unlink $vmfw_conffile;
2884 sub clone_vmfw_conf {
2885 my ($vmid, $newid) = @_;
2887 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
2888 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
2890 if (-f $clonevm_conffile) {
2891 unlink $clonevm_conffile;
2893 if (-f $sourcevm_conffile) {
2894 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
2895 PVE::Tools::file_set_contents($clonevm_conffile, $data);
2899 sub read_vm_firewall_configs {
2900 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
2902 my $vmfw_configs = {};
2904 foreach my $vmid (keys %{$vmdata->{qemu}}) {
2905 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm
', $vmid, $dir, $verbose);
2906 next if !$vmfw_conf->{options}; # skip if file does not exists
2907 $vmfw_configs->{$vmid} = $vmfw_conf;
2909 foreach my $vmid (keys %{$vmdata->{lxc}}) {
2910 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct
', $vmid, $dir, $verbose);
2911 next if !$vmfw_conf->{options}; # skip if file does not exists
2912 $vmfw_configs->{$vmid} = $vmfw_conf;
2915 return $vmfw_configs;
2918 sub get_option_log_level {
2919 my ($options, $k) = @_;
2921 my $v = $options->{$k};
2922 $v = $default_log_level if !defined($v);
2924 return undef if $v eq '' || $v eq 'nolog
';
2926 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2928 return $v if ($v >= 0) && ($v <= 7);
2930 warn "unknown log level ($k = '$v')\n";
2935 sub generate_std_chains {
2936 my ($ruleset, $options, $ipversion) = @_;
2938 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
2940 my $loglevel = get_option_log_level($options, 'smurf_log_level
');
2944 if ($ipversion == 4) {
2945 # same as shorewall smurflog.
2946 $chain = 'PVEFW-smurflog
';
2947 $std_chains->{$chain} = [];
2949 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2950 push @{$std_chains->{$chain}}, "-j DROP";
2953 # same as shorewall logflags action.
2954 $loglevel = get_option_log_level($options, 'tcp_flags_log_level
');
2955 $chain = 'PVEFW-logflags
';
2956 $std_chains->{$chain} = [];
2958 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2959 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2960 push @{$std_chains->{$chain}}, "-j DROP";
2962 foreach my $chain (keys %$std_chains) {
2963 ruleset_create_chain($ruleset, $chain);
2964 foreach my $rule (@{$std_chains->{$chain}}) {
2966 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
2968 ruleset_addrule($ruleset, $chain, $rule);
2974 sub generate_ipset_chains {
2975 my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_; #fixme
2977 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
2979 my $options = $fw_conf->{ipset}->{$ipset};
2983 foreach my $entry (@$options) {
2984 next if $entry->{errors}; # skip entries with errors
2987 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
2988 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
2990 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
2992 #http://backreference.org/2013/03/01/ipv6-address-normalization/
2994 $cidr = lc(Net::IP::ip_compress_address($cidr, 6));
3000 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
3005 foreach my $ipversion (4, 6) {
3006 my $data = $nethash->{$ipversion};
3008 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
3010 my $hashsize = scalar(@$options);
3011 if ($hashsize <= 64) {
3014 $hashsize = round_powerof2($hashsize);
3017 my $family = $ipversion == "6" ? "inet6" : "inet";
3019 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
3021 foreach my $cidr (sort keys %$data) {
3022 my $entry = $data->{$cidr};
3024 my $cmd = "add $name $cidr";
3025 if ($entry->{nomatch}) {
3026 if ($feature_ipset_nomatch) {
3027 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3029 warn "ignore !$cidr - nomatch not supported by kernel\n";
3032 push @{$ipset_ruleset->{$name}}, $cmd;
3039 sub round_powerof2 {
3043 $int |= $int >> $_ foreach (1,2,4,8,16);
3047 sub load_clusterfw_conf {
3048 my ($filename, $verbose) = @_;
3050 $filename = $clusterfw_conf_filename if !defined($filename);
3052 my $cluster_conf = {};
3053 if (my $fh = IO::File->new($filename, O_RDONLY)) {
3054 $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
3057 return $cluster_conf;
3060 sub save_clusterfw_conf {
3061 my ($cluster_conf) = @_;
3065 my $options = $cluster_conf->{options};
3066 $raw .= &$format_options($options) if $options && scalar(keys %$options);
3068 my $aliases = $cluster_conf->{aliases};
3069 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
3071 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
3073 my $rules = $cluster_conf->{rules};
3074 if ($rules && scalar(@$rules)) {
3075 $raw .= "[RULES]\n\n";
3076 $raw .= &$format_rules($rules, 1);
3080 if ($cluster_conf->{groups}) {
3081 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3082 my $rules = $cluster_conf->{groups}->{$group};
3083 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3084 my $utf8comment = encode('utf8
', $comment);
3085 $raw .= "[group $group] # $utf8comment\n\n";
3087 $raw .= "[group $group]\n\n";
3090 $raw .= &$format_rules($rules, 0);
3096 mkdir $pvefw_conf_dir;
3097 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3099 unlink $clusterfw_conf_filename;
3103 sub load_hostfw_conf {
3104 my ($cluster_conf, $filename, $verbose) = @_;
3106 $filename = $hostfw_conf_filename if !defined($filename);
3108 my $hostfw_conf = {};
3109 if (my $fh = IO::File->new($filename, O_RDONLY)) {
3110 $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
3112 return $hostfw_conf;
3115 sub save_hostfw_conf {
3116 my ($hostfw_conf) = @_;
3120 my $options = $hostfw_conf->{options};
3121 $raw .= &$format_options($options) if $options && scalar(keys %$options);
3123 my $rules = $hostfw_conf->{rules};
3124 if ($rules && scalar(@$rules)) {
3125 $raw .= "[RULES]\n\n";
3126 $raw .= &$format_rules($rules, 1);
3131 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3133 unlink $hostfw_conf_filename;
3138 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3142 if ($vmdata) { # test mode
3143 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3144 my $filename = "$testdir/cluster.fw";
3145 $cluster_conf = load_clusterfw_conf($filename, $verbose);
3147 $filename = "$testdir/host.fw";
3148 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
3150 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
3151 } else { # normal operation
3152 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
3154 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
3156 $vmdata = read_local_vm_config();
3157 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
3160 my ($ruleset, $ipset_ruleset) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
3161 my ($rulesetv6) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose);
3163 return ($ruleset, $ipset_ruleset, $rulesetv6);
3166 sub compile_iptables_filter {
3167 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
3170 if ($cluster_conf->{aliases}->{local_network}) {
3171 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3174 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3176 $cluster_conf->{aliases}->{local_network} = {
3177 name => 'local_network
', cidr => $localnet, ipversion => $localnet_ver };
3180 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3182 return ({}, {}) if !$cluster_conf->{options}->{enable};
3186 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3187 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
3189 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3191 my $hostfw_options = $hostfw_conf->{options} || {};
3193 # fixme: what log level should we use here?
3194 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3196 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
3198 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
3199 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
3201 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
3203 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3204 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
3206 generate_std_chains($ruleset, $hostfw_options, $ipversion);
3208 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
3210 my $ipset_ruleset = {};
3212 if ($hostfw_enable) {
3213 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
3214 warn $@ if $@; # just to be sure - should not happen
3217 # generate firewall rules for QEMU VMs
3218 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3220 my $conf = $vmdata->{qemu}->{$vmid};
3221 my $vmfw_conf = $vmfw_configs->{$vmid};
3222 return if !$vmfw_conf;
3224 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
3226 foreach my $netid (keys %$conf) {
3227 next if $netid !~ m/^net(\d+)$/;
3228 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3229 next if !$net->{firewall};
3230 my $iface = "tap${vmid}i$1";
3232 my $macaddr = $net->{macaddr};
3233 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3234 $vmfw_conf, $vmid, 'IN
', $ipversion);
3235 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3236 $vmfw_conf, $vmid, 'OUT
', $ipversion);
3239 warn $@ if $@; # just to be sure - should not happen
3242 # generate firewall rules for LXC containers
3243 foreach my $vmid (keys %{$vmdata->{lxc}}) {
3245 my $conf = $vmdata->{lxc}->{$vmid};
3246 my $vmfw_conf = $vmfw_configs->{$vmid};
3247 return if !$vmfw_conf;
3249 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
3251 if ($vmfw_conf->{options}->{enable}) {
3252 foreach my $netid (keys %$conf) {
3253 next if $netid !~ m/^net(\d+)$/;
3254 my $net = PVE::LXC::parse_lxc_network($conf->{$netid});
3255 next if !$net->{firewall};
3256 my $iface = "veth${vmid}i$1";
3257 my $macaddr = $net->{hwaddr};
3258 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3259 $vmfw_conf, $vmid, 'IN
', $ipversion);
3260 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3261 $vmfw_conf, $vmid, 'OUT
', $ipversion);
3265 warn $@ if $@; # just to be sure - should not happen
3268 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
3269 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
3272 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf);
3274 return ($ruleset, $ipset_ruleset);
3277 sub get_ruleset_status {
3278 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3280 my $statushash = {};
3282 foreach my $chain (sort keys %$ruleset) {
3283 my $sig = &$digest_fn($ruleset->{$chain});
3285 $statushash->{$chain}->{sig} = $sig;
3287 my $oldsig = $active_chains->{$chain};
3288 if (!defined($oldsig)) {
3289 $statushash->{$chain}->{action} = 'create
';
3291 if ($oldsig eq $sig) {
3292 $statushash->{$chain}->{action} = 'exists';
3294 $statushash->{$chain}->{action} = 'update
';
3297 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
3298 foreach my $cmd (@{$ruleset->{$chain}}) {
3299 print "\t$cmd\n" if $verbose;
3303 foreach my $chain (sort keys %$active_chains) {
3304 if (!defined($ruleset->{$chain})) {
3305 my $sig = $active_chains->{$chain};
3306 $statushash->{$chain}->{action} = 'delete';
3307 $statushash->{$chain}->{sig} = $sig;
3308 print "delete $chain ($sig)\n" if $verbose;
3315 sub print_sig_rule {
3316 my ($chain, $sig) = @_;
3318 # We just use this to store a SHA1 checksum used to detect changes
3319 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
3322 sub get_ruleset_cmdlist {
3323 my ($ruleset, $verbose, $iptablescmd) = @_;
3325 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
3327 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd);
3328 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3330 # create missing chains first
3331 foreach my $chain (sort keys %$ruleset) {
3332 my $stat = $statushash->{$chain};
3333 die "internal error" if !$stat;
3334 next if $stat->{action} ne 'create
';
3336 $cmdlist .= ":$chain - [0:0]\n";
3339 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3340 my $chain = "PVEFW-$h";
3341 if ($ruleset->{$chain} && !$hooks->{$h}) {
3342 $cmdlist .= "-A $h -j $chain\n";
3346 foreach my $chain (sort keys %$ruleset) {
3347 my $stat = $statushash->{$chain};
3348 die "internal error" if !$stat;
3350 if ($stat->{action
} eq 'update' || $stat->{action
} eq 'create') {
3351 $cmdlist .= "-F $chain\n";
3352 foreach my $cmd (@{$ruleset->{$chain}}) {
3353 $cmdlist .= "$cmd\n";
3355 $cmdlist .= print_sig_rule
($chain, $stat->{sig
});
3356 } elsif ($stat->{action
} eq 'delete') {
3357 die "internal error"; # this should not happen
3358 } elsif ($stat->{action
} eq 'exists') {
3361 die "internal error - unknown status '$stat->{action}'";
3365 foreach my $chain (keys %$statushash) {
3366 next if $statushash->{$chain}->{action
} ne 'delete';
3367 $cmdlist .= "-F $chain\n";
3369 foreach my $chain (keys %$statushash) {
3370 next if $statushash->{$chain}->{action
} ne 'delete';
3371 next if $chain eq 'PVEFW-INPUT';
3372 next if $chain eq 'PVEFW-OUTPUT';
3373 next if $chain eq 'PVEFW-FORWARD';
3374 $cmdlist .= "-X $chain\n";
3377 my $changes = $cmdlist ne "*filter\n" ?
1 : 0;
3379 $cmdlist .= "COMMIT\n";
3381 return wantarray ?
($cmdlist, $changes) : $cmdlist;
3384 sub get_ipset_cmdlist
{
3385 my ($ruleset, $verbose) = @_;
3389 my $delete_cmdlist = "";
3391 my $active_chains = ipset_get_chains
();
3392 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&ipset_chain_digest
, $verbose);
3394 # remove stale _swap chains
3395 foreach my $chain (keys %$active_chains) {
3396 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3397 $cmdlist .= "destroy $chain\n";
3401 foreach my $chain (keys %$ruleset) {
3402 my $stat = $statushash->{$chain};
3403 die "internal error" if !$stat;
3405 if ($stat->{action
} eq 'create') {
3406 foreach my $cmd (@{$ruleset->{$chain}}) {
3407 $cmdlist .= "$cmd\n";
3412 foreach my $chain (keys %$ruleset) {
3413 my $stat = $statushash->{$chain};
3414 die "internal error" if !$stat;
3416 if ($stat->{action
} eq 'update') {
3417 my $chain_swap = $chain."_swap";
3419 foreach my $cmd (@{$ruleset->{$chain}}) {
3420 $cmd =~ s/$chain/$chain_swap/;
3421 $cmdlist .= "$cmd\n";
3423 $cmdlist .= "swap $chain_swap $chain\n";
3424 $cmdlist .= "flush $chain_swap\n";
3425 $cmdlist .= "destroy $chain_swap\n";
3429 # the remove unused chains
3430 foreach my $chain (keys %$statushash) {
3431 next if $statushash->{$chain}->{action
} ne 'delete';
3433 $delete_cmdlist .= "flush $chain\n";
3434 $delete_cmdlist .= "destroy $chain\n";
3437 my $changes = ($cmdlist || $delete_cmdlist) ?
1 : 0;
3439 return ($cmdlist, $delete_cmdlist, $changes);
3443 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $verbose) = @_;
3445 enable_bridge_firewall
();
3447 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
3448 get_ipset_cmdlist
($ipset_ruleset, $verbose);
3450 my ($cmdlist, $changes) = get_ruleset_cmdlist
($ruleset, $verbose);
3451 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist
($rulesetv6, $verbose, "ip6tables");
3454 if ($ipset_changes) {
3455 print "ipset changes:\n";
3456 print $ipset_create_cmdlist if $ipset_create_cmdlist;
3457 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
3461 print "iptables changes:\n";
3466 print "ip6tables changes:\n";
3471 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
3472 PVE
::Tools
::file_set_contents
($tmpfile, $ipset_create_cmdlist || '');
3474 ipset_restore_cmdlist
($ipset_create_cmdlist);
3476 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
3477 PVE
::Tools
::file_set_contents
($tmpfile, $cmdlist || '');
3479 iptables_restore_cmdlist
($cmdlist);
3481 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
3482 PVE
::Tools
::file_set_contents
($tmpfile, $cmdlistv6 || '');
3484 ip6tables_restore_cmdlist
($cmdlistv6);
3486 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
3487 PVE
::Tools
::file_set_contents
($tmpfile, $ipset_delete_cmdlist || '');
3489 ipset_restore_cmdlist
($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
3491 # test: re-read status and check if everything is up to date
3492 my $active_chains = iptables_get_chains
();
3493 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&iptables_chain_digest
, 0);
3496 foreach my $chain (sort keys %$ruleset) {
3497 my $stat = $statushash->{$chain};
3498 if ($stat->{action
} ne 'exists') {
3499 warn "unable to update chain '$chain'\n";
3504 my $active_chainsv6 = iptables_get_chains
("ip6tables");
3505 my $statushashv6 = get_ruleset_status
($rulesetv6, $active_chainsv6, \
&iptables_chain_digest
, 0);
3507 foreach my $chain (sort keys %$rulesetv6) {
3508 my $stat = $statushashv6->{$chain};
3509 if ($stat->{action
} ne 'exists') {
3510 warn "unable to update chain '$chain'\n";
3515 die "unable to apply firewall changes\n" if $errors;
3517 update_nf_conntrack_max
($hostfw_conf);
3519 update_nf_conntrack_tcp_timeout_established
($hostfw_conf);
3523 sub update_nf_conntrack_max
{
3524 my ($hostfw_conf) = @_;
3526 my $max = 65536; # reasonable default
3528 my $options = $hostfw_conf->{options
} || {};
3530 if (defined($options->{nf_conntrack_max
}) && ($options->{nf_conntrack_max
} > $max)) {
3531 $max = $options->{nf_conntrack_max
};
3532 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
3535 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
3536 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
3538 my $current = int(PVE
::Tools
::file_read_firstline
($filename_nf_conntrack_max) || $max);
3540 if ($current != $max) {
3541 my $hashsize = int($max/4);
3542 PVE
::ProcFSTools
::write_proc_entry
($filename_hashsize, $hashsize);
3543 PVE
::ProcFSTools
::write_proc_entry
($filename_nf_conntrack_max, $max);
3547 sub update_nf_conntrack_tcp_timeout_established
{
3548 my ($hostfw_conf) = @_;
3550 my $options = $hostfw_conf->{options
} || {};
3552 my $value = defined($options->{nf_conntrack_tcp_timeout_established
}) ?
$options->{nf_conntrack_tcp_timeout_established
} : 432000;
3554 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3557 sub remove_pvefw_chains
{
3559 PVE
::Firewall
::remove_pvefw_chains_iptables
("iptables");
3560 PVE
::Firewall
::remove_pvefw_chains_iptables
("ip6tables");
3561 PVE
::Firewall
::remove_pvefw_chains_ipset
();
3565 sub remove_pvefw_chains_iptables
{
3566 my ($iptablescmd) = @_;
3568 my ($chash, $hooks) = iptables_get_chains
($iptablescmd);
3569 my $cmdlist = "*filter\n";
3571 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3573 $cmdlist .= "-D $h -j PVEFW-$h\n";
3577 foreach my $chain (keys %$chash) {
3578 $cmdlist .= "-F $chain\n";
3581 foreach my $chain (keys %$chash) {
3582 $cmdlist .= "-X $chain\n";
3584 $cmdlist .= "COMMIT\n";
3586 if($iptablescmd eq "ip6tables") {
3587 ip6tables_restore_cmdlist
($cmdlist);
3589 iptables_restore_cmdlist
($cmdlist);
3593 sub remove_pvefw_chains_ipset
{
3595 my $ipset_chains = ipset_get_chains
();
3599 foreach my $chain (keys %$ipset_chains) {
3600 $cmdlist .= "flush $chain\n";
3601 $cmdlist .= "destroy $chain\n";
3604 ipset_restore_cmdlist
($cmdlist) if $cmdlist;
3608 my $cluster_conf = load_clusterfw_conf
();
3609 my $cluster_options = $cluster_conf->{options
};
3610 my $enable = $cluster_options->{enable
};
3614 # load required modules here
3620 my $cluster_conf = load_clusterfw_conf
();
3621 my $cluster_options = $cluster_conf->{options
};
3623 if (!$cluster_options->{enable
}) {
3624 PVE
::Firewall
::remove_pvefw_chains
();
3628 my $hostfw_conf = load_hostfw_conf
($cluster_conf);
3630 my ($ruleset, $ipset_ruleset, $rulesetv6) = compile
($cluster_conf, $hostfw_conf);
3632 apply_ruleset
($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6);