13 use Socket
qw(AF_INET6 inet_ntop inet_pton);
14 use Storable
qw(dclone);
17 use PVE
::Exception
qw(raise raise_param_exc);
19 use PVE
::JSONSchema
qw(register_standard_option get_standard_option);
23 use PVE
::Tools
qw($IPV4RE $IPV6RE);
24 use PVE
::Tools
qw(run_command lock_file dir_glob_foreach);
26 my $pvefw_conf_dir = "/etc/pve/firewall";
27 my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
29 # dynamically include PVE::QemuServer and PVE::LXC
30 # to avoid dependency problems
33 require PVE
::QemuServer
;
34 require PVE
::QemuConfig
;
35 $have_qemu_server = 1;
44 my $pve_fw_status_dir = "/var/lib/pve-firewall";
46 mkdir $pve_fw_status_dir; # make sure this exists
48 my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
49 my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
50 our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
52 my $max_alias_name_length = 64;
53 my $max_ipset_name_length = 64;
54 my $max_group_name_length = 18;
56 my $PROTOCOLS_WITH_PORTS = {
58 udplite
=> 1, 136 => 1,
64 PVE
::JSONSchema
::register_format
('IPorCIDR', \
&pve_verify_ip_or_cidr
);
65 sub pve_verify_ip_or_cidr
{
66 my ($cidr, $noerr) = @_;
68 if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
69 return $cidr if Net
::IP-
>new($cidr);
70 return undef if $noerr;
71 die Net
::IP
::Error
() . "\n";
73 return undef if $noerr;
74 die "value does not look like a valid IP address or CIDR network\n";
77 PVE
::JSONSchema
::register_format
('IPorCIDRorAlias', \
&pve_verify_ip_or_cidr_or_alias
);
78 sub pve_verify_ip_or_cidr_or_alias
{
79 my ($cidr, $noerr) = @_;
81 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
83 return pve_verify_ip_or_cidr
($cidr, $noerr);
86 PVE
::JSONSchema
::register_standard_option
('ipset-name', {
87 description
=> "IP set name.",
89 pattern
=> $ipset_name_pattern,
91 maxLength
=> $max_ipset_name_length,
94 PVE
::JSONSchema
::register_standard_option
('pve-fw-alias', {
95 description
=> "Alias name.",
97 pattern
=> $ip_alias_pattern,
99 maxLength
=> $max_alias_name_length,
102 PVE
::JSONSchema
::register_standard_option
('pve-fw-loglevel' => {
103 description
=> "Log level.",
105 enum
=> ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
109 PVE
::JSONSchema
::register_standard_option
('pve-security-group-name', {
110 description
=> "Security Group name.",
112 pattern
=> $security_group_name_pattern,
114 maxLength
=> $max_group_name_length,
117 my $feature_ipset_nomatch = 0;
119 my (undef, undef, $release) = POSIX
::uname
();
120 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
121 my ($major, $minor) = ($1, $2);
122 $feature_ipset_nomatch = 1 if ($major > 3) ||
123 ($major == 3 && $minor >= 7);
128 my $nodename = PVE
::INotify
::nodename
();
129 my $hostfw_conf_filename = "/etc/pve/nodes/$nodename/host.fw";
131 my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
133 my $default_log_level = 'nolog'; # avoid logs by default
134 my $global_log_ratelimit = '--limit 1/sec';
136 my $log_level_hash = {
158 # sport => port[,port[,port]].. or port:port
159 # dport => port[,port[,port]].. or port:port
160 # log => optional, loglevel
161 # logmsg => optional, logmsg - overwrites default
162 # iface_in => incomin interface
163 # iface_out => outgoing interface
164 # match => optional, overwrites generation of match
165 # target => optional, overwrites action
167 # we need to overwrite some macros for ipv6
168 my $pve_ipv6fw_macros = {
170 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'echo-request' },
172 'NeighborDiscovery' => [
173 "IPv6 neighbor solicitation, neighbor and router advertisement",
174 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'router-solicitation' },
175 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'router-advertisement' },
176 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'neighbor-solicitation' },
177 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'neighbor-advertisement' },
181 { action
=> 'PARAM', proto
=> 'udp', dport
=> '546:547', sport
=> '546:547' },
184 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
185 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'echo-request' },
189 # imported/converted from: /usr/share/shorewall/macro.*
190 my $pve_fw_macros = {
193 { action
=> 'PARAM', proto
=> 'udp', dport
=> '10080' },
194 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10080' },
197 "Auth (identd) traffic",
198 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '113' },
201 "Border Gateway Protocol traffic",
202 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '179' },
205 "BitTorrent traffic for BitTorrent 3.1 and earlier",
206 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6889' },
207 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
210 "BitTorrent traffic for BitTorrent 3.2 and later",
211 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6999' },
212 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
215 "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)",
216 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6789' },
217 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6800:7300' },
220 "Concurrent Versions System pserver traffic",
221 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2401' },
224 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
225 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1494' },
226 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1604' },
227 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2598' },
230 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
231 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3689' },
232 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3689' },
235 "Distributed Checksum Clearinghouse spam filtering mechanism",
236 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6277' },
239 "Forwarded DHCP traffic",
240 { action
=> 'PARAM', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
243 "Domain Name System traffic (upd and tcp)",
244 { action
=> 'PARAM', proto
=> 'udp', dport
=> '53' },
245 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '53' },
248 "Distributed Compiler service",
249 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3632' },
252 "File Transfer Protocol",
253 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '21' },
256 "Finger protocol (RFC 742)",
257 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '79' },
260 "GNUnet secure peer-to-peer networking traffic",
261 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2086' },
262 { action
=> 'PARAM', proto
=> 'udp', dport
=> '2086' },
263 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1080' },
264 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1080' },
267 "Generic Routing Encapsulation tunneling protocol",
268 { action
=> 'PARAM', proto
=> '47' },
271 "Git distributed revision control traffic",
272 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9418' },
275 "OpenPGP HTTP keyserver protocol traffic",
276 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '11371' },
279 "Hypertext Transfer Protocol (WWW)",
280 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
283 "Hypertext Transfer Protocol (WWW) over SSL",
284 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
287 "Internet Cache Protocol V2 (Squid) traffic",
288 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3130' },
291 "AOL Instant Messenger traffic",
292 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5190' },
295 "Internet Message Access Protocol",
296 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '143' },
299 "Internet Message Access Protocol over SSL",
300 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '993' },
303 "IPIP capsulation traffic",
304 { action
=> 'PARAM', proto
=> '94' },
308 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
309 { action
=> 'PARAM', proto
=> '50' },
312 "IPsec authentication (AH) traffic",
313 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
314 { action
=> 'PARAM', proto
=> '51' },
317 "IPsec traffic and Nat-Traversal",
318 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500' },
319 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4500' },
320 { action
=> 'PARAM', proto
=> '50' },
323 "Internet Relay Chat traffic",
324 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6667' },
327 "HP Jetdirect printing",
328 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9100' },
331 "Layer 2 Tunneling Protocol traffic",
332 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1701' },
335 "Lightweight Directory Access Protocol traffic",
336 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '389' },
339 "Secure Lightweight Directory Access Protocol traffic",
340 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '636' },
343 "Microsoft Notification Protocol",
344 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1863' },
347 "Microsoft SQL Server",
348 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1433' },
351 "Mail traffic (SMTP, SMTPS, Submission)",
352 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
353 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
354 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
358 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5353' },
361 "Munin networked resource monitoring traffic",
362 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4949' },
366 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3306' },
369 "NNTP traffic (Usenet).",
370 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '119' },
373 "Encrypted NNTP traffic (Usenet)",
374 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '563' },
377 "Network Time Protocol (ntpd)",
378 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
381 "OSPF multicast traffic",
382 { action
=> 'PARAM', proto
=> '89' },
386 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1194' },
389 "Symantec PCAnywere (tm)",
390 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5632' },
391 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5631' },
395 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '110' },
398 "Encrypted POP3 traffic",
399 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '995' },
402 "Point-to-Point Tunneling Protocol",
403 { action
=> 'PARAM', proto
=> '47' },
404 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1723' },
408 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
412 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5432' },
415 "Line Printer protocol printing",
416 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '515' },
419 "Microsoft Remote Desktop Protocol traffic",
420 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3389' },
423 "Routing Information Protocol (bidirectional)",
424 { action
=> 'PARAM', proto
=> 'udp', dport
=> '520' },
427 "BIND remote management protocol",
428 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '953' },
431 "Razor Antispam System",
432 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2703' },
435 "Remote time retrieval (rdate)",
436 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
440 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '873' },
443 "SANE network scanning",
444 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6566' },
447 "Microsoft SMB traffic",
448 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
449 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
450 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
451 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
454 "Samba Web Administration Tool",
455 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '901' },
458 "Simple Mail Transfer Protocol",
459 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
462 "Encrypted Simple Mail Transfer Protocol",
463 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
466 "Simple Network Management Protocol",
467 { action
=> 'PARAM', proto
=> 'udp', dport
=> '161:162' },
468 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '161' },
471 "Spam Assassin SPAMD traffic",
472 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '783' },
475 "Secure shell traffic",
476 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '22' },
479 "Subversion server (svnserve)",
480 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3690' },
483 "SixXS IPv6 Deployment and Tunnel Broker",
484 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3874' },
485 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3740' },
486 { action
=> 'PARAM', proto
=> '41' },
487 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5072,8374' },
490 "Squid web proxy traffic",
491 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3128' },
494 "Mail message submission traffic",
495 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
498 "Syslog protocol (RFC 5424) traffic",
499 { action
=> 'PARAM', proto
=> 'udp', dport
=> '514' },
500 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '514' },
503 "Trivial File Transfer Protocol traffic",
504 { action
=> 'PARAM', proto
=> 'udp', dport
=> '69' },
508 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '23' },
512 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '992' },
515 "RFC 868 Time protocol",
516 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
519 "Traceroute (for up to 30 hops) traffic",
520 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
521 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
524 "VNC traffic for VNC display's 0 - 99",
525 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5900:5999' },
528 "VNC traffic from Vncservers to Vncviewers in listen mode",
529 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5500' },
532 "WWW traffic (HTTP and HTTPS)",
533 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
534 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
537 "Web Cache/Proxy traffic (port 8080)",
538 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '8080' },
542 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10000' },
545 "Whois (nicname, RFC 3912) traffic",
546 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '43' },
550 my $pve_fw_parsed_macros;
551 my $pve_fw_macro_descr;
552 my $pve_fw_macro_ipversion = {};
553 my $pve_fw_preferred_macro_names = {};
555 my $FWACCEPTMARK_ON = "0x80000000/0x80000000";
556 my $FWACCEPTMARK_OFF = "0x00000000/0x80000000";
558 my $pve_std_chains = {};
559 my $pve_std_chains_conf = {};
560 $pve_std_chains_conf->{4} = {
561 'PVEFW-SET-ACCEPT-MARK' => [
562 { target
=> "-j MARK --set-mark $FWACCEPTMARK_ON" },
564 'PVEFW-DropBroadcast' => [
565 # same as shorewall 'Broadcast'
566 # simply DROP BROADCAST/MULTICAST/ANYCAST
567 # we can use this to reduce logging
568 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
569 { action
=> 'DROP', dsttype
=> 'MULTICAST' },
570 { action
=> 'DROP', dsttype
=> 'ANYCAST' },
571 { action
=> 'DROP', dest
=> '224.0.0.0/4' },
574 # same as shorewall 'reject'
575 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
576 { action
=> 'DROP', source
=> '224.0.0.0/4' },
577 { action
=> 'DROP', proto
=> 'icmp' },
578 { match
=> '-p tcp', target
=> '-j REJECT --reject-with tcp-reset' },
579 { match
=> '-p udp', target
=> '-j REJECT --reject-with icmp-port-unreachable' },
580 { match
=> '-p icmp', target
=> '-j REJECT --reject-with icmp-host-unreachable' },
581 { target
=> '-j REJECT --reject-with icmp-host-prohibited' },
584 # same as shorewall 'Drop', which is equal to DROP,
585 # but REJECT/DROP some packages to reduce logging,
586 # and ACCEPT critical ICMP types
587 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
588 # we are not interested in BROADCAST/MULTICAST/ANYCAST
589 { action
=> 'PVEFW-DropBroadcast' },
590 # ACCEPT critical ICMP types
591 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
592 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
593 # Drop packets with INVALID state
594 { action
=> 'DROP', match
=> '-m conntrack --ctstate INVALID', },
595 # Drop Microsoft SMB noise
596 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445' },
597 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139' },
598 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
599 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445' },
600 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
601 # Drop new/NotSyn traffic so that it doesn't get logged
602 { action
=> 'DROP', match
=> '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
604 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
607 # same as shorewall 'Reject', which is equal to Reject,
608 # but REJECT/DROP some packages to reduce logging,
609 # and ACCEPT critical ICMP types
610 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
611 # we are not interested in BROADCAST/MULTICAST/ANYCAST
612 { action
=> 'PVEFW-DropBroadcast' },
613 # ACCEPT critical ICMP types
614 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
615 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
616 # Drop packets with INVALID state
617 { action
=> 'DROP', match
=> '-m conntrack --ctstate INVALID', },
618 # Drop Microsoft SMB noise
619 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445' },
620 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
621 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
622 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445' },
623 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
624 # Drop new/NotSyn traffic so that it doesn't get logged
625 { action
=> 'DROP', match
=> '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
627 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
629 'PVEFW-tcpflags' => [
630 # same as shorewall tcpflags action.
631 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
632 { match
=> '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target
=> '-g PVEFW-logflags' },
633 { match
=> '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target
=> '-g PVEFW-logflags' },
634 { match
=> '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target
=> '-g PVEFW-logflags' },
635 { match
=> '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target
=> '-g PVEFW-logflags' },
636 { match
=> '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target
=> '-g PVEFW-logflags' },
639 # same as shorewall smurfs action
640 # Filter packets for smurfs (packets with a broadcast address as the source).
641 { match
=> '-s 0.0.0.0/32', target
=> '-j RETURN' }, # allow DHCP
642 { match
=> '-m addrtype --src-type BROADCAST', target
=> '-g PVEFW-smurflog' },
643 { match
=> '-s 224.0.0.0/4', target
=> '-g PVEFW-smurflog' },
645 'PVEFW-smurflog' => [
646 { action
=> 'DROP', logmsg
=> 'DROP: ' },
648 'PVEFW-logflags' => [
649 { action
=> 'DROP', logmsg
=> 'DROP: ' },
653 $pve_std_chains_conf->{6} = {
654 'PVEFW-SET-ACCEPT-MARK' => [
655 { target
=> "-j MARK --set-mark $FWACCEPTMARK_ON" },
657 'PVEFW-DropBroadcast' => [
658 # same as shorewall 'Broadcast'
659 # simply DROP BROADCAST/MULTICAST/ANYCAST
660 # we can use this to reduce logging
661 #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
662 # ipv6 addrtype does not work with kernel 2.6.32
663 #{ action => 'DROP', dsttype => 'MULTICAST' },
664 #{ action => 'DROP', dsttype => 'ANYCAST' },
665 { action
=> 'DROP', dest
=> 'ff00::/8' },
666 #{ action => 'DROP', dest => '224.0.0.0/4' },
669 { action
=> 'DROP', proto
=> 'icmpv6' },
670 { match
=> '-p tcp', target
=> '-j REJECT --reject-with tcp-reset' },
671 { match
=> '-p udp', target
=> '-j REJECT --reject-with icmp6-port-unreachable' },
672 { target
=> '-j REJECT --reject-with icmp6-adm-prohibited' },
675 # same as shorewall 'Drop', which is equal to DROP,
676 # but REJECT/DROP some packages to reduce logging,
677 # and ACCEPT critical ICMP types
678 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
679 # we are not interested in BROADCAST/MULTICAST/ANYCAST
680 { action
=> 'PVEFW-DropBroadcast' },
681 # ACCEPT critical ICMP types
682 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'destination-unreachable' },
683 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'time-exceeded' },
684 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'packet-too-big' },
685 # Drop packets with INVALID state
686 { action
=> 'DROP', match
=> '-m conntrack --ctstate INVALID', },
687 # Drop Microsoft SMB noise
688 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445' },
689 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
690 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
691 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445' },
692 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
693 # Drop new/NotSyn traffic so that it doesn't get logged
694 { action
=> 'DROP', match
=> '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
696 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
699 # same as shorewall 'Reject', which is equal to Reject,
700 # but REJECT/DROP some packages to reduce logging,
701 # and ACCEPT critical ICMP types
702 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
703 # we are not interested in BROADCAST/MULTICAST/ANYCAST
704 { action
=> 'PVEFW-DropBroadcast' },
705 # ACCEPT critical ICMP types
706 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'destination-unreachable' },
707 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'time-exceeded' },
708 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'packet-too-big' },
709 # Drop packets with INVALID state
710 { action
=> 'DROP', match
=> '-m conntrack --ctstate INVALID', },
711 # Drop Microsoft SMB noise
712 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445' },
713 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139' },
714 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
715 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445' },
716 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
717 # Drop new/NotSyn traffic so that it doesn't get logged
718 { action
=> 'DROP', match
=> '-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN' },
720 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
722 'PVEFW-tcpflags' => [
723 # same as shorewall tcpflags action.
724 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
725 { match
=> '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target
=> '-g PVEFW-logflags' },
726 { match
=> '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target
=> '-g PVEFW-logflags' },
727 { match
=> '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target
=> '-g PVEFW-logflags' },
728 { match
=> '-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN', target
=> '-g PVEFW-logflags' },
729 { match
=> '-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN', target
=> '-g PVEFW-logflags' },
731 'PVEFW-logflags' => [
732 { action
=> 'DROP', logmsg
=> 'DROP: ' },
736 # iptables -p icmp -h
737 my $icmp_type_names = {
740 'destination-unreachable' => 1,
741 'network-unreachable' => 1,
742 'host-unreachable' => 1,
743 'protocol-unreachable' => 1,
744 'port-unreachable' => 1,
745 'fragmentation-needed' => 1,
746 'source-route-failed' => 1,
747 'network-unknown' => 1,
749 'network-prohibited' => 1,
750 'host-prohibited' => 1,
751 'TOS-network-unreachable' => 1,
752 'TOS-host-unreachable' => 1,
753 'communication-prohibited' => 1,
754 'host-precedence-violation' => 1,
755 'precedence-cutoff' => 1,
756 'source-quench' => 1,
758 'network-redirect' => 1,
759 'host-redirect' => 1,
760 'TOS-network-redirect' => 1,
761 'TOS-host-redirect' => 1,
763 'router-advertisement' => 1,
764 'router-solicitation' => 1,
765 'time-exceeded' => 1,
766 'ttl-zero-during-transit' => 1,
767 'ttl-zero-during-reassembly' => 1,
768 'parameter-problem' => 1,
769 'ip-header-bad' => 1,
770 'required-option-missing' => 1,
771 'timestamp-request' => 1,
772 'timestamp-reply' => 1,
773 'address-mask-request' => 1,
774 'address-mask-reply' => 1,
777 # ip6tables -p icmpv6 -h
779 my $icmpv6_type_names = {
781 'destination-unreachable' => 1,
783 'communication-prohibited' => 1,
784 'address-unreachable' => 1,
785 'port-unreachable' => 1,
786 'packet-too-big' => 1,
787 'time-exceeded' => 1,
788 'ttl-zero-during-transit' => 1,
789 'ttl-zero-during-reassembly' => 1,
790 'parameter-problem' => 1,
792 'unknown-header-type' => 1,
793 'unknown-option' => 1,
796 'router-solicitation' => 1,
797 'router-advertisement' => 1,
798 'neighbor-solicitation' => 1,
799 'neighbour-solicitation' => 1,
800 'neighbor-advertisement' => 1,
801 'neighbour-advertisement' => 1,
805 sub init_firewall_macros
{
807 $pve_fw_parsed_macros = {};
810 my ($k, $macro) = @_;
811 my $lc_name = lc($k);
812 $pve_fw_macro_ipversion->{$k} = 0;
813 while (!ref($macro->[0])) {
814 my $desc = shift @$macro;
815 if ($desc eq 'ipv4only') {
816 $pve_fw_macro_ipversion->{$k} = 4;
817 } elsif ($desc eq 'ipv6only') {
818 $pve_fw_macro_ipversion->{$k} = 6;
820 $pve_fw_macro_descr->{$k} = $desc;
823 $pve_fw_preferred_macro_names->{$lc_name} = $k;
824 $pve_fw_parsed_macros->{$k} = $macro;
827 foreach my $k (keys %$pve_fw_macros) {
828 &$parse($k, $pve_fw_macros->{$k});
831 foreach my $k (keys %$pve_ipv6fw_macros) {
832 next if $pve_fw_parsed_macros->{$k};
833 &$parse($k, $pve_ipv6fw_macros->{$k});
834 $pve_fw_macro_ipversion->{$k} = 6;
838 init_firewall_macros
();
841 return wantarray ?
($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
846 sub get_etc_services
{
848 return $etc_services if $etc_services;
850 my $filename = "/etc/services";
852 my $fh = IO
::File-
>new($filename, O_RDONLY
);
854 warn "unable to read '$filename' - $!\n";
860 while (my $line = <$fh>) {
862 next if $line =~m/^#/;
863 next if ($line =~m/^\s*$/);
865 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp|sctp).*$!) {
866 $services->{byid
}->{$2}->{name
} = $1;
867 $services->{byid
}->{$2}->{port
} = $2;
868 $services->{byid
}->{$2}->{$3} = 1;
869 $services->{byname
}->{$1} = $services->{byid
}->{$2};
875 $etc_services = $services;
878 return $etc_services;
881 sub parse_protocol_file
{
884 my $fh = IO
::File-
>new($filename, O_RDONLY
);
886 warn "unable to read '$filename' - $!\n";
892 while (my $line = <$fh>) {
894 next if $line =~m/^#/;
895 next if ($line =~m/^\s*$/);
897 if ($line =~ m!^(\S+)\s+(\d+)(?:\s+.*)?$!) {
898 $protocols->{byid
}->{$2}->{name
} = $1;
899 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
910 sub get_etc_protocols
{
911 return $etc_protocols if $etc_protocols;
913 my $protocols = parse_protocol_file
('/etc/protocols');
915 # add special case for ICMP v6
916 $protocols->{byid
}->{icmpv6
}->{name
} = "icmpv6";
917 $protocols->{byname
}->{icmpv6
} = $protocols->{byid
}->{icmpv6
};
919 $etc_protocols = $protocols;
921 return $etc_protocols;
926 sub get_etc_ethertypes
{
927 $etc_ethertypes = parse_protocol_file
('/etc/ethertypes')
929 return $etc_ethertypes;
935 my ($new_value) = @_;
937 $__local_network = $new_value if defined($new_value);
939 return $__local_network if defined($__local_network);
942 my $nodename = PVE
::INotify
::nodename
();
944 my $ip = PVE
::Cluster
::remote_node_ip
($nodename);
946 my $testip = Net
::IP-
>new($ip);
948 my $isv6 = $testip->version == 6;
949 my $routes = $isv6 ? PVE
::ProcFSTools
::read_proc_net_ipv6_route
()
950 : PVE
::ProcFSTools
::read_proc_net_route
();
951 foreach my $entry (@$routes) {
954 $mask = $entry->{prefix
};
955 next if !$mask; # skip the default route...
957 $mask = $PVE::Network
::ipv4_mask_hash_localnet-
>{$entry->{mask
}};
958 next if !defined($mask);
960 my $cidr = "$entry->{dest}/$mask";
961 my $testnet = Net
::IP-
>new($cidr);
962 my $overlap = $testnet->overlaps($testip);
963 if ($overlap == $Net::IP
::IP_B_IN_A_OVERLAP
||
964 $overlap == $Net::IP
::IP_IDENTICAL
)
966 $__local_network = $cidr;
973 return $__local_network;
976 # ipset names are limited to 31 characters,
977 # and we use '-v4' or '-v6' to indicate IP versions,
978 # and we use '_swap' suffix for atomic update,
979 # for example PVEFW-${VMID}-${ipset_name}_swap
981 my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
983 sub compute_ipset_chain_name
{
984 my ($vmid, $ipset_name, $ipversion) = @_;
986 $vmid = 0 if !defined($vmid);
988 my $id = "$vmid-${ipset_name}-v$ipversion";
990 if (length($id) > $max_iptables_ipset_name_length) {
991 $id = PVE
::Tools
::fnv31a_hex
($id);
997 sub compute_ipfilter_ipset_name
{
1000 return "ipfilter-$iface";
1003 sub parse_address_list
{
1006 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
1007 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
1011 if ($str =~ m/^${ip_alias_pattern}$/) {
1012 die "alias name too long\n" if length($str) > $max_alias_name_length;
1020 my @elements = split(/,/, $str);
1021 die "extraneous commas in list\n" if $str ne join(',', @elements);
1022 foreach my $elem (@elements) {
1024 my $ip = Net
::IP-
>new($elem);
1026 my $err = Net
::IP
::Error
();
1027 die "invalid IP address: $err\n";
1029 $iprange = 1 if $elem =~ m/-/;
1031 my $new_ipversion = Net
::IP
::ip_is_ipv6
($ip->ip()) ?
6 : 4;
1033 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
1034 if $ipversion && ($new_ipversion != $ipversion);
1036 $ipversion = $new_ipversion;
1039 die "you can't use a range in a list\n" if $iprange && $count > 1;
1044 sub parse_port_name_number_or_range
{
1045 my ($str, $dport) = @_;
1047 my $services = PVE
::Firewall
::get_etc_services
();
1051 my @elements = split(/,/, $str);
1052 die "extraneous commas in list\n" if $str ne join(',', @elements);
1053 foreach my $item (@elements) {
1054 if ($item =~ m/^([0-9]+):([0-9]+)$/) {
1056 my ($port1, $port2) = ($1, $2);
1057 die "invalid port '$port1'\n" if $port1 > 65535;
1058 die "invalid port '$port2'\n" if $port2 > 65535;
1059 die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2;
1060 } elsif ($item =~ m/^([0-9]+)$/) {
1063 die "invalid port '$port'\n" if $port > 65535;
1065 if ($dport && $icmp_type_names->{$item}) {
1067 } elsif ($dport && $icmpv6_type_names->{$item}) {
1070 die "invalid port '$item'\n" if !$services->{byname
}->{$item};
1075 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 0;
1077 # I really don't like to use the word number here, but it's the only thing
1078 # that makes sense in a literal way. The range 1:100 counts as 2, not as
1079 # one and not as 100...
1080 die "too many entries in port list (> 15 numbers)\n"
1083 return (scalar(@elements) > 1);
1086 PVE
::JSONSchema
::register_format
('pve-fw-sport-spec', \
&pve_fw_verify_sport_spec
);
1087 sub pve_fw_verify_sport_spec
{
1090 parse_port_name_number_or_range
($portstr, 0);
1095 PVE
::JSONSchema
::register_format
('pve-fw-dport-spec', \
&pve_fw_verify_dport_spec
);
1096 sub pve_fw_verify_dport_spec
{
1099 parse_port_name_number_or_range
($portstr, 1);
1104 PVE
::JSONSchema
::register_format
('pve-fw-addr-spec', \
&pve_fw_verify_addr_spec
);
1105 sub pve_fw_verify_addr_spec
{
1108 parse_address_list
($list);
1113 PVE
::JSONSchema
::register_format
('pve-fw-protocol-spec', \
&pve_fw_verify_protocol_spec
);
1114 sub pve_fw_verify_protocol_spec
{
1117 my $protocols = get_etc_protocols
();
1119 die "unknown protocol '$proto'\n" if $proto &&
1120 !(defined($protocols->{byname
}->{$proto}) ||
1121 defined($protocols->{byid
}->{$proto}));
1127 # helper function for API
1129 sub copy_opject_with_digest
{
1132 my $sha = Digest
::SHA-
>new('sha1');
1135 foreach my $k (sort keys %$object) {
1136 my $v = $object->{$k};
1137 next if !defined($v);
1139 $sha->add($k, ':', $v, "\n");
1142 my $digest = $sha->hexdigest;
1144 $res->{digest
} = $digest;
1146 return wantarray ?
($res, $digest) : $res;
1149 sub copy_list_with_digest
{
1152 my $sha = Digest
::SHA-
>new('sha1');
1155 foreach my $entry (@$list) {
1157 foreach my $k (sort keys %$entry) {
1158 my $v = $entry->{$k};
1159 next if !defined($v);
1161 # Note: digest ignores refs ($rule->{errors})
1162 # since Digest::SHA expects a series of bytes,
1163 # we have to encode the value here to prevent errors when
1164 # using utf8 characters (eg. in comments)
1165 $sha->add($k, ':', encode_utf8
($v), "\n") if !ref($v); ;
1170 my $digest = $sha->hexdigest;
1172 foreach my $entry (@$res) {
1173 $entry->{digest
} = $digest;
1176 return wantarray ?
($res, $digest) : $res;
1179 our $cluster_option_properties = {
1181 description
=> "Enable or disable the firewall cluster wide.",
1187 description
=> "Enable ebtables rules cluster wide.",
1193 description
=> "Input policy.",
1196 enum
=> ['ACCEPT', 'REJECT', 'DROP'],
1199 description
=> "Output policy.",
1202 enum
=> ['ACCEPT', 'REJECT', 'DROP'],
1205 description
=> "Log ratelimiting settings",
1206 type
=> 'string', format
=> {
1209 description
=> 'Enable or disable log rate limiting',
1215 description
=> 'Frequency with which the burst bucket gets refilled',
1217 pattern
=> '[1-9][0-9]*\/(second|minute|hour|day)',
1218 format_description
=> 'rate',
1219 default => '1/second',
1225 description
=> 'Inital burst of packages which will get logged',
1233 our $host_option_properties = {
1235 description
=> "Enable host firewall rules.",
1239 log_level_in
=> get_standard_option
('pve-fw-loglevel', {
1240 description
=> "Log level for incoming traffic." }),
1241 log_level_out
=> get_standard_option
('pve-fw-loglevel', {
1242 description
=> "Log level for outgoing traffic." }),
1243 tcp_flags_log_level
=> get_standard_option
('pve-fw-loglevel', {
1244 description
=> "Log level for illegal tcp flags filter." }),
1245 smurf_log_level
=> get_standard_option
('pve-fw-loglevel', {
1246 description
=> "Log level for SMURFS filter." }),
1248 description
=> "Enable SMURFS filter.",
1253 description
=> "Filter illegal combinations of TCP flags.",
1257 nf_conntrack_max
=> {
1258 description
=> "Maximum number of tracked connections.",
1263 nf_conntrack_tcp_timeout_established
=> {
1264 description
=> "Conntrack established timeout.",
1270 description
=> "Enable NDP.",
1274 nf_conntrack_allow_invalid
=> {
1275 description
=> "Allow invalid packets on connection tracking.",
1280 log_nf_conntrack
=> {
1281 description
=> "Enable logging of conntrack information.",
1288 our $vm_option_properties = {
1290 description
=> "Enable/disable firewall rules.",
1295 description
=> "Enable/disable MAC address filter.",
1300 description
=> "Enable DHCP.",
1305 description
=> "Enable NDP.",
1310 description
=> "Allow sending Router Advertisement.",
1315 description
=> "Enable default IP filters. " .
1316 "This is equivalent to adding an empty ipfilter-net<id> ipset " .
1317 "for every interface. Such ipsets implicitly contain sane default " .
1318 "restrictions such as restricting IPv6 link local addresses to " .
1319 "the one derived from the interface's MAC address. For containers " .
1320 "the configured IP addresses will be implicitly added.",
1325 description
=> "Input policy.",
1328 enum
=> ['ACCEPT', 'REJECT', 'DROP'],
1331 description
=> "Output policy.",
1334 enum
=> ['ACCEPT', 'REJECT', 'DROP'],
1336 log_level_in
=> get_standard_option
('pve-fw-loglevel', {
1337 description
=> "Log level for incoming traffic." }),
1338 log_level_out
=> get_standard_option
('pve-fw-loglevel', {
1339 description
=> "Log level for outgoing traffic." }),
1344 my $addr_list_descr = "This can refer to a single IP address, an IP set ('+ipsetname') or an IP alias definition. You can also specify an address range like '20.34.101.207-201.3.9.99', or a list of IP addresses and networks (entries are separated by comma). Please do not mix IPv4 and IPv6 addresses inside such lists.";
1346 my $port_descr = "You can use service names or simple numbers (0-65535), as defined in '/etc/services'. Port ranges can be specified with '\\d+:\\d+', for example '80:85', and you can use comma separated list to match several ports or ranges.";
1348 my $rule_properties = {
1350 description
=> "Update rule at position <pos>.",
1355 digest
=> get_standard_option
('pve-config-digest'),
1357 description
=> "Rule type.",
1360 enum
=> ['in', 'out', 'group'],
1363 description
=> "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
1366 pattern
=> $security_group_name_pattern,
1371 description
=> "Use predefined standard macro.",
1376 iface
=> get_standard_option
('pve-iface', {
1377 description
=> "Network interface name. You have to use network configuration key names for VMs and containers ('net\\d+'). Host related rules can use arbitrary strings.",
1381 description
=> "Restrict packet source address. $addr_list_descr",
1382 type
=> 'string', format
=> 'pve-fw-addr-spec',
1386 description
=> "Restrict packet destination address. $addr_list_descr",
1387 type
=> 'string', format
=> 'pve-fw-addr-spec',
1391 description
=> "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.",
1392 type
=> 'string', format
=> 'pve-fw-protocol-spec',
1396 description
=> "Flag to enable/disable a rule.",
1401 log => get_standard_option
('pve-fw-loglevel', {
1402 description
=> "Log level for firewall rule.",
1405 description
=> "Restrict TCP/UDP source port. $port_descr",
1406 type
=> 'string', format
=> 'pve-fw-sport-spec',
1410 description
=> "Restrict TCP/UDP destination port. $port_descr",
1411 type
=> 'string', format
=> 'pve-fw-dport-spec',
1415 description
=> "Descriptive comment.",
1421 sub add_rule_properties
{
1422 my ($properties) = @_;
1424 foreach my $k (keys %$rule_properties) {
1425 my $h = $rule_properties->{$k};
1426 # copy data, so that we can modify later without side effects
1427 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
1433 sub delete_rule_properties
{
1434 my ($rule, $delete_str) = @_;
1436 foreach my $opt (PVE
::Tools
::split_list
($delete_str)) {
1437 raise_param_exc
({ 'delete' => "no such property ('$opt')"})
1438 if !defined($rule_properties->{$opt});
1439 raise_param_exc
({ 'delete' => "unable to delete required property '$opt'"})
1440 if $opt eq 'type' || $opt eq 'action';
1441 delete $rule->{$opt};
1447 my $apply_macro = sub {
1448 my ($macro_name, $param, $verify, $ipversion) = @_;
1450 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1451 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1453 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1454 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1457 # skip macros which are specific to another ipversion
1458 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1459 return if $ipversion != $required;
1464 foreach my $templ (@$macro_rules) {
1466 my $param_used = {};
1467 foreach my $k (keys %$templ) {
1468 my $v = $templ->{$k};
1469 if ($v eq 'PARAM') {
1471 $param_used->{$k} = 1;
1472 } elsif ($v eq 'DEST') {
1473 $v = $param->{dest
};
1474 $param_used->{dest
} = 1;
1475 } elsif ($v eq 'SOURCE') {
1476 $v = $param->{source
};
1477 $param_used->{source
} = 1;
1481 my $msg = "missing parameter '$k' in macro '$macro_name'";
1482 raise_param_exc
({ macro => $msg }) if $verify;
1487 foreach my $k (keys %$param) {
1488 next if $k eq 'macro';
1489 next if !defined($param->{$k});
1490 next if $param_used->{$k};
1491 if (defined($rule->{$k})) {
1492 if ($rule->{$k} ne $param->{$k}) {
1493 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
1494 raise_param_exc
({ $k => $msg }) if $verify;
1498 $rule->{$k} = $param->{$k};
1501 push @$rules, $rule;
1507 my $rule_env_iface_lookup = {
1516 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
1518 my $allow_groups = $rule_env eq 'group' ?
0 : 1;
1520 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1521 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
1523 my $errors = $rule->{errors
} || {};
1525 my $error_count = 0;
1527 my $add_error = sub {
1528 my ($param, $msg) = @_;
1530 raise_param_exc
({ $param => $msg }) if !$noerr;
1532 $errors->{$param} = $msg if !$errors->{$param};
1536 my $set_ip_version = sub {
1539 die "detected mixed ipv4/ipv6 adresses in rule\n"
1540 if $ipversion && ($vers != $ipversion);
1545 my $check_ipset_or_alias_property = sub {
1546 my ($name, $expected_ipversion) = @_;
1548 if (my $value = $rule->{$name}) {
1549 if ($value =~ m/^\+/) {
1550 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
1551 &$add_error($name, "no such ipset '$1'")
1552 if !($cluster_conf->{ipset
}->{$1} || ($fw_conf && $fw_conf->{ipset
}->{$1}));
1555 &$add_error($name, "invalid ipset name '$value'");
1557 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1558 my $alias = lc($value);
1559 &$add_error($name, "no such alias '$value'")
1560 if !($cluster_conf->{aliases
}->{$alias} || ($fw_conf && $fw_conf->{aliases
}->{$alias}));
1561 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1562 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1564 &$set_ip_version($e->{ipversion
});
1569 my $type = $rule->{type
};
1570 my $action = $rule->{action
};
1572 &$add_error('type', "missing property") if !$type;
1573 &$add_error('action', "missing property") if !$action;
1576 if ($type eq 'in' || $type eq 'out') {
1577 &$add_error('action', "unknown action '$action'")
1578 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1579 } elsif ($type eq 'group') {
1580 &$add_error('type', "security groups not allowed")
1582 &$add_error('action', "invalid characters in security group name")
1583 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1585 &$add_error('type', "unknown rule type '$type'");
1589 if ($rule->{iface
}) {
1590 &$add_error('type', "parameter -i not allowed for this rule type")
1592 eval { PVE
::JSONSchema
::pve_verify_iface
($rule->{iface
}); };
1593 &$add_error('iface', $@) if $@;
1594 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
1595 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1596 if $rule->{iface
} !~ m/^net(\d+)$/;
1600 if ($rule->{macro}) {
1601 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1602 $rule->{macro} = $preferred_name;
1604 &$add_error('macro', "unknown macro '$rule->{macro}'");
1608 if ($rule->{proto
}) {
1609 eval { pve_fw_verify_protocol_spec
($rule->{proto
}); };
1610 &$add_error('proto', $@) if $@;
1611 &$set_ip_version(4) if $rule->{proto
} eq 'icmp';
1612 &$set_ip_version(6) if $rule->{proto
} eq 'icmpv6';
1615 if ($rule->{dport
}) {
1616 eval { parse_port_name_number_or_range
($rule->{dport
}, 1); };
1617 &$add_error('dport', $@) if $@;
1618 my $proto = $rule->{proto
};
1619 &$add_error('proto', "missing property - 'dport' requires this property")
1621 &$add_error('dport', "protocol '$proto' does not support ports")
1622 if !$PROTOCOLS_WITH_PORTS->{$proto} &&
1623 $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
1626 if ($rule->{sport
}) {
1627 eval { parse_port_name_number_or_range
($rule->{sport
}, 0); };
1628 &$add_error('sport', $@) if $@;
1629 my $proto = $rule->{proto
};
1630 &$add_error('proto', "missing property - 'sport' requires this property")
1632 &$add_error('sport', "protocol '$proto' does not support ports")
1633 if !$PROTOCOLS_WITH_PORTS->{$proto};
1636 if ($rule->{source
}) {
1638 my $source_ipversion = parse_address_list
($rule->{source
});
1639 &$set_ip_version($source_ipversion);
1641 &$add_error('source', $@) if $@;
1642 &$check_ipset_or_alias_property('source', $ipversion);
1645 if ($rule->{dest
}) {
1647 my $dest_ipversion = parse_address_list
($rule->{dest
});
1648 &$set_ip_version($dest_ipversion);
1650 &$add_error('dest', $@) if $@;
1651 &$check_ipset_or_alias_property('dest', $ipversion);
1654 $rule->{ipversion
} = $ipversion if $ipversion;
1656 if ($rule->{macro} && !$error_count) {
1657 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
1659 if (ref($err) eq "PVE::Exception" && $err->{errors
}) {
1660 my $eh = $err->{errors
};
1661 foreach my $p (keys %$eh) {
1662 &$add_error($p, $eh->{$p});
1665 &$add_error('macro', "$err");
1670 $rule->{errors
} = $errors if $error_count;
1675 sub copy_rule_data
{
1676 my ($rule, $param) = @_;
1678 foreach my $k (keys %$rule_properties) {
1679 if (defined(my $v = $param->{$k})) {
1680 if ($v eq '' || $v eq '-') {
1691 sub rules_modify_permissions
{
1692 my ($rule_env) = @_;
1694 if ($rule_env eq 'host') {
1696 check
=> ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1698 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1700 check
=> ['perm', '/', [ 'Sys.Modify' ]],
1702 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1704 check
=> ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1711 sub rules_audit_permissions
{
1712 my ($rule_env) = @_;
1714 if ($rule_env eq 'host') {
1716 check
=> ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1718 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1720 check
=> ['perm', '/', [ 'Sys.Audit' ]],
1722 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1724 check
=> ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1732 my $bridge_firewall_enabled = 0;
1734 sub enable_bridge_firewall
{
1736 return if $bridge_firewall_enabled; # only once
1738 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1739 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
1741 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1742 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/ipv4/tcp_syncookies", "1");
1744 $bridge_firewall_enabled = 1;
1747 sub iptables_restore_cmdlist
{
1750 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist, errmsg
=> "iptables_restore_cmdlist");
1753 sub ip6tables_restore_cmdlist
{
1756 run_command
("/sbin/ip6tables-restore -n", input
=> $cmdlist, errmsg
=> "iptables_restore_cmdlist");
1759 sub ipset_restore_cmdlist
{
1762 run_command
("/sbin/ipset restore", input
=> $cmdlist, errmsg
=> "ipset_restore_cmdlist");
1765 sub ebtables_restore_cmdlist
{
1768 run_command
("/sbin/ebtables-restore", input
=> $cmdlist, errmsg
=> "ebtables_restore_cmdlist");
1771 sub iptables_get_chains
{
1772 my ($iptablescmd) = @_;
1774 $iptablescmd = "iptables" if !$iptablescmd;
1778 # check what chains we want to track
1779 my $is_pvefw_chain = sub {
1782 return 1 if $name =~ m/^PVEFW-\S+$/;
1784 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
1786 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
1788 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
1789 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
1801 return if $line =~ m/^#/;
1802 return if $line =~ m/^\s*$/;
1804 if ($line =~ m/^\*(\S+)$/) {
1809 return if $table ne 'filter';
1811 if ($line =~ m/^:(\S+)\s/) {
1813 return if !&$is_pvefw_chain($chain);
1814 $res->{$chain} = "unknown";
1815 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
1816 my ($chain, $sig) = ($1, $2);
1817 return if !&$is_pvefw_chain($chain);
1818 $res->{$chain} = $sig;
1819 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1822 # simply ignore the rest
1827 run_command
("/sbin/$iptablescmd-save", outfunc
=> $parser);
1829 return wantarray ?
($res, $hooks) : $res;
1832 sub iptables_chain_digest
{
1834 my $digest = Digest
::SHA-
>new('sha1');
1835 foreach my $rule (@$rules) { # order is important
1836 $digest->add($rule);
1838 return $digest->b64digest;
1841 sub ipset_chain_digest
{
1844 my $digest = Digest
::SHA-
>new('sha1');
1845 foreach my $rule (sort @$rules) { # note: sorted
1846 $digest->add($rule);
1848 return $digest->b64digest;
1851 sub ipset_get_chains
{
1859 return if $line =~ m/^#/;
1860 return if $line =~ m/^\s*$/;
1861 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
1863 $line =~ s/\s+$//; # delete trailing white space
1864 push @{$chains->{$chain}}, $line;
1866 # simply ignore the rest
1871 run_command
("/sbin/ipset save", outfunc
=> $parser);
1873 # compute digest for each chain
1874 foreach my $chain (keys %$chains) {
1875 $res->{$chain} = ipset_chain_digest
($chains->{$chain});
1881 sub ebtables_get_chains
{
1887 return if $line =~ m/^#/;
1888 return if $line =~ m/^\s*$/;
1889 if ($line =~ m/^:(\S+)\s\S+$/) {
1890 # Make sure we know chains exist even if they're empty.
1891 $chains->{$1} //= [];
1892 } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) {
1895 push @{$chains->{$chain}}, $line;
1897 # simply ignore the rest
1902 run_command
("/sbin/ebtables-save", outfunc
=> $parser);
1903 # compute digest for each chain and store rules as well
1904 foreach my $chain (keys %$chains) {
1905 $res->{$chain}->{rules
} = $chains->{$chain};
1906 $res->{$chain}->{sig
} = iptables_chain_digest
($chains->{$chain});
1911 # substitude action of rule according to action hash
1912 sub rule_substitude_action
{
1913 my ($rule, $actions) = @_;
1915 if (my $action = $rule->{action
}) {
1916 $rule->{action
} = $actions->{$action} if defined($actions->{$action});
1920 # generate a src or dst match
1921 # $dir(ection) is either d or s
1922 sub ipt_gen_src_or_dst_match
{
1923 my ($adr, $dir, $ipversion, $cluster_conf, $fw_conf) = @_;
1928 } elsif ($dir eq 'd') {
1931 die "ipt_gen_src_or_dst_match: invalid direction $dir \n";
1935 if ($adr =~ m/^\+/) {
1936 if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
1939 if ($fw_conf && $fw_conf->{ipset
}->{$name}) {
1940 $ipset_chain = compute_ipset_chain_name
($fw_conf->{vmid
}, $name, $ipversion);
1941 } elsif ($cluster_conf && $cluster_conf->{ipset
}->{$name}) {
1942 $ipset_chain = compute_ipset_chain_name
(0, $name, $ipversion);
1944 die "no such ipset '$name'\n";
1946 $match = "-m set --match-set ${ipset_chain} ${srcdst}";
1948 die "invalid security group name '$adr'\n";
1950 } elsif ($adr =~ m/^${ip_alias_pattern}$/){
1951 my $alias = lc($adr);
1952 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1953 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1954 die "no such alias '$adr'\n" if !$e;
1955 $match = "-${dir} $e->{cidr}";
1956 } elsif ($adr =~ m/\-/){
1957 $match = "-m iprange --${srcdst}-range $adr";
1959 $match = "-${dir} $adr";
1965 # convert a %rule to an array of iptables commands
1966 sub ipt_rule_to_cmds
{
1967 my ($rule, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid) = @_;
1969 die "ipt_rule_to_cmds unable to handle macro" if $rule->{macro}; #should not happen
1973 if (defined $rule->{match
}) {
1974 push @match, $rule->{match
};
1976 push @match, "-i $rule->{iface_in}" if $rule->{iface_in
};
1977 push @match, "-o $rule->{iface_out}" if $rule->{iface_out
};
1979 if ($rule->{source
}) {
1980 push @match, ipt_gen_src_or_dst_match
($rule->{source
}, 's', $ipversion, $cluster_conf, $fw_conf);
1982 if ($rule->{dest
}) {
1983 push @match, ipt_gen_src_or_dst_match
($rule->{dest
}, 'd', $ipversion, $cluster_conf, $fw_conf);
1986 if (my $proto = $rule->{proto
}) {
1987 push @match, "-p $proto";
1989 my $multidport = defined($rule->{dport
}) && parse_port_name_number_or_range
($rule->{dport
}, 1);
1990 my $multisport = defined($rule->{sport
}) && parse_port_name_number_or_range
($rule->{sport
}, 0);
1992 my $add_dport = sub {
1993 return if !$rule->{dport
};
1995 if ($proto eq 'icmp') {
1996 # Note: we use dport to store --icmp-type
1997 die "unknown icmp-type '$rule->{dport}'\n"
1998 if $rule->{dport
} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport
}});
1999 push @match, "-m icmp --icmp-type $rule->{dport}";
2000 } elsif ($proto eq 'icmpv6') {
2001 # Note: we use dport to store --icmpv6-type
2002 die "unknown icmpv6-type '$rule->{dport}'\n"
2003 if $rule->{dport
} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport
}});
2004 push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
2005 } elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
2006 die "protocol $proto does not have ports\n";
2007 } elsif ($multidport) {
2008 push @match, "--match multiport", "--dports $rule->{dport}";
2010 push @match, "--dport $rule->{dport}";
2014 my $add_sport = sub {
2015 return if !$rule->{sport
};
2017 die "protocol $proto does not have ports\n"
2018 if !$PROTOCOLS_WITH_PORTS->{$proto};
2020 push @match, "--match multiport", "--sports $rule->{sport}";
2022 push @match, "--sport $rule->{sport}";
2026 # order matters - single port before multiport!
2027 $add_dport->() if $multisport;
2029 $add_dport->() if !$multisport;
2030 } elsif ($rule->{dport
} || $rule->{sport
}) {
2031 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport
};
2032 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport
};
2035 push @match, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
2037 my $matchstr = scalar(@match) ?
join(' ', @match) : "";
2040 if (defined $rule->{target
}) {
2041 $targetstr = $rule->{target
};
2043 my $action = (defined $rule->{action
}) ?
$rule->{action
} : "";
2044 my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
2045 $targetstr = ($goto) ?
"-g $action" : "-j $action";
2049 my $log = $rule->{log};
2050 if (defined($log) && $log ne 'nolog') {
2051 my $loglevel = $log_level_hash->{$log};
2052 my $logaction = get_log_rule_base
($chain, $vmid, $rule->{logmsg
}, $loglevel);
2053 push @iptcmds, "-A $chain $matchstr $logaction";
2055 push @iptcmds, "-A $chain $matchstr $targetstr";
2059 sub ruleset_generate_rule
{
2060 my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_;
2064 if ($rule->{macro}) {
2065 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
2070 # update all or nothing
2072 foreach my $r (@$rules) {
2073 push @ipt_rule_cmds, ipt_rule_to_cmds
($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid);
2075 foreach my $c (@ipt_rule_cmds) {
2076 ruleset_add_ipt_cmd
($ruleset, $chain, $c);
2080 sub ruleset_create_chain
{
2081 my ($ruleset, $chain) = @_;
2083 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
2084 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
2086 die "chain '$chain' already exists\n" if $ruleset->{$chain};
2088 $ruleset->{$chain} = [];
2091 sub ruleset_chain_exist
{
2092 my ($ruleset, $chain) = @_;
2094 return $ruleset->{$chain} ?
1 : undef;
2097 # add an iptables command (like generated by ipt_rule_to_cmds) to a chain
2098 sub ruleset_add_ipt_cmd
{
2099 my ($ruleset, $chain, $iptcmd) = @_;
2101 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2103 push @{$ruleset->{$chain}}, $iptcmd;
2106 sub ruleset_addrule
{
2107 my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
2109 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2112 my $loglevel = $log_level_hash->{$log};
2113 my $logaction = get_log_rule_base
($chain, $vmid, $logmsg, $loglevel);
2114 push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
2116 # for stable ebtables digests avoid double-spaces to match ebtables-save output
2117 $match .= ' ' if length($match);
2118 push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
2121 sub ruleset_insertrule
{
2122 my ($ruleset, $chain, $match, $action, $log) = @_;
2124 die "no such chain '$chain'\n" if !$ruleset->{$chain};
2126 unshift @{$ruleset->{$chain}}, "-A $chain $match $action";
2129 sub get_log_rule_base
{
2130 my ($chain, $vmid, $msg, $loglevel) = @_;
2132 $vmid = 0 if !defined($vmid);
2133 $msg = "" if !defined($msg);
2136 if (defined($global_log_ratelimit)) {
2137 $rlimit = "-m limit $global_log_ratelimit ";
2140 # Note: we use special format for prefix to pass further
2141 # info to log daemon (VMID, LOGLEVEL and CHAIN)
2142 return "${rlimit}-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
2145 sub ruleset_add_chain_policy {
2146 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
2148 if ($policy eq 'ACCEPT') {
2150 my $rule = { action => 'ACCEPT' };
2151 rule_substitude_action($rule, { ACCEPT => $accept_action});
2152 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
2154 } elsif ($policy eq 'DROP') {
2156 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Drop
");
2158 ruleset_addrule($ruleset, $chain, "", "-j DROP
", $loglevel, "policy
$policy: ", $vmid);
2159 } elsif ($policy eq 'REJECT') {
2160 ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject
");
2162 ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject
", $loglevel, "policy
$policy: ", $vmid);
2165 die "internal error
: unknown policy
'$policy'";
2169 sub ruleset_chain_add_ndp {
2170 my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
2171 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
2173 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type router-solicitation
", $accept);
2174 if ($direction ne 'OUT' || $options->{radv}) {
2175 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type router-advertisement
", $accept);
2177 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type neighbor-solicitation
", $accept);
2178 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type neighbor-advertisement
", $accept);
2181 sub ruleset_chain_add_conn_filters {
2182 my ($ruleset, $chain, $allow_invalid, $accept) = @_;
2184 if (!$allow_invalid) {
2185 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
", "-j DROP
");
2187 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
", "-j
$accept");
2190 sub ruleset_chain_add_input_filters {
2191 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
2193 if ($cluster_conf->{ipset}->{blacklist}){
2194 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist
")) {
2195 ruleset_create_chain($ruleset, "PVEFW-blacklist
");
2196 ruleset_addrule($ruleset, "PVEFW-blacklist
", "", "-j DROP
", $loglevel, "DROP
: ", 0);
2198 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
2199 ruleset_addrule($ruleset, $chain, "-m set
--match-set
${ipset_chain
} src
", "-j PVEFW-blacklist
");
2202 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
2203 if ($ipversion == 4) {
2204 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
", "-j PVEFW-smurfs
");
2208 if ($options->{tcpflags}) {
2209 ruleset_addrule($ruleset, $chain, "-p tcp
", "-j PVEFW-tcpflags
");
2213 sub ruleset_create_vm_chain {
2214 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
2216 ruleset_create_chain($ruleset, $chain);
2217 my $accept = generate_nfqueue($options);
2219 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
2220 if ($ipversion == 4) {
2221 if ($direction eq 'OUT') {
2222 ruleset_generate_rule($ruleset, $chain, $ipversion,
2223 { action => 'PVEFW-SET-ACCEPT-MARK',
2224 proto => 'udp', sport => 68, dport => 67 });
2226 ruleset_generate_rule($ruleset, $chain, $ipversion,
2227 { action => 'ACCEPT',
2228 proto => 'udp', sport => 67, dport => 68 });
2230 } elsif ($ipversion == 6) {
2231 if ($direction eq 'OUT') {
2232 ruleset_generate_rule($ruleset, $chain, $ipversion,
2233 { action => 'PVEFW-SET-ACCEPT-MARK',
2234 proto => 'udp', sport => 546, dport => 547 });
2236 ruleset_generate_rule($ruleset, $chain, $ipversion,
2237 { action => 'ACCEPT',
2238 proto => 'udp', sport => 547, dport => 546 });
2244 if ($direction eq 'OUT') {
2245 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
2246 ruleset_addrule($ruleset, $chain, "-m mac
! --mac-source
$macaddr", "-j DROP
");
2248 if ($ipversion == 6 && !$options->{radv}) {
2249 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type router-advertisement
", "-j DROP
");
2251 if ($ipfilter_ipset) {
2252 ruleset_addrule($ruleset, $chain, "-m set
! --match-set
$ipfilter_ipset src
", "-j DROP
");
2254 ruleset_addrule($ruleset, $chain, "", "-j MARK
--set-mark
$FWACCEPTMARK_OFF"); # clear mark
2257 my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j
$accept";
2258 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
2261 sub ruleset_add_group_rule {
2262 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
2264 my $group = $rule->{action};
2265 my $group_chain = "GROUP-
$group-$direction";
2266 if(!ruleset_chain_exist($ruleset, $group_chain)){
2267 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
2270 if ($direction eq 'OUT' && $rule->{iface_out}) {
2271 ruleset_addrule($ruleset, $chain, "-o
$rule->{iface_out
}", "-j
$group_chain");
2272 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
2273 ruleset_addrule($ruleset, $chain, "-i
$rule->{iface_in
}", "-j
$group_chain");
2275 ruleset_addrule($ruleset, $chain, "", "-j
$group_chain");
2278 ruleset_addrule($ruleset, $chain, "-m mark
--mark
$FWACCEPTMARK_ON", "-j
$action");
2281 sub ruleset_generate_vm_rules {
2282 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_;
2284 my $lc_direction = lc($direction);
2286 my $in_accept = generate_nfqueue($options);
2288 foreach my $rule (@$rules) {
2289 next if $rule->{iface} && $rule->{iface} ne $netid;
2290 next if !$rule->{enable} || $rule->{errors};
2291 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2293 if ($rule->{type} eq 'group') {
2294 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
2295 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
2297 next if $rule->{type} ne $lc_direction;
2299 $rule->{logmsg} = "$rule->{action
}: ";
2300 if ($direction eq 'OUT') {
2301 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" });
2302 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
2304 rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject
" });
2305 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
2313 sub generate_nfqueue {
2316 if ($options->{ips}) {
2317 my $action = "NFQUEUE
";
2318 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2319 if (defined($3) && defined($1)) {
2320 $action .= " --queue-balance
$1:$3";
2321 } elsif (defined($1)) {
2322 $action .= " --queue-num
$1";
2325 $action .= " --queue-bypass
" if $feature_ipset_nomatch; #need kernel 3.10
2332 sub ruleset_generate_vm_ipsrules {
2333 my ($ruleset, $options, $direction, $iface) = @_;
2335 if ($options->{ips} && $direction eq 'IN') {
2336 my $nfqueue = generate_nfqueue($options);
2338 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS
")) {
2339 ruleset_create_chain($ruleset, "PVEFW-IPS
");
2342 ruleset_addrule($ruleset, "PVEFW-IPS
", "-m physdev
--physdev-out
$iface --physdev-is-bridged
", "-j
$nfqueue");
2346 sub generate_tap_rules_direction {
2347 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
2349 my $lc_direction = lc($direction);
2351 my $rules = $vmfw_conf->{rules};
2353 my $options = $vmfw_conf->{options};
2354 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
2356 my $tapchain = "$iface-$direction";
2358 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
2359 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
2360 if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
2362 # create chain with mac and ip filter
2363 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
2365 if ($options->{enable}) {
2366 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
2368 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
2373 if ($direction eq 'OUT') {
2374 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2376 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
2379 my $accept = generate_nfqueue($options);
2380 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
2381 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
2383 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : 'ACCEPT';
2384 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
2387 # plug the tap chain to bridge chain
2388 if ($direction eq 'IN') {
2389 ruleset_addrule($ruleset, "PVEFW-FWBR-IN
",
2390 "-m physdev
--physdev-is-bridged
--physdev-out
$iface", "-j
$tapchain");
2392 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT
",
2393 "-m physdev
--physdev-is-bridged
--physdev-in
$iface", "-j
$tapchain");
2397 sub enable_host_firewall {
2398 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
2400 my $options = $hostfw_conf->{options};
2401 my $cluster_options = $cluster_conf->{options};
2402 my $rules = $hostfw_conf->{rules};
2403 my $cluster_rules = $cluster_conf->{rules};
2405 # host inbound firewall
2406 my $chain = "PVEFW-HOST-IN
";
2407 ruleset_create_chain($ruleset, $chain);
2409 my $loglevel = get_option_log_level($options, "log_level_in
");
2411 ruleset_addrule($ruleset, $chain, "-i lo
", "-j ACCEPT
");
2413 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
2414 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
2415 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
2417 # we use RETURN because we need to check also tap rules
2418 my $accept_action = 'RETURN';
2420 ruleset_addrule($ruleset, $chain, "-p igmp
", "-j
$accept_action"); # important for multicast
2422 # add host rules first, so that cluster wide rules can be overwritten
2423 foreach my $rule (@$rules, @$cluster_rules) {
2424 next if !$rule->{enable} || $rule->{errors};
2425 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2427 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
2430 if ($rule->{type} eq 'group') {
2431 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
2432 } elsif ($rule->{type} eq 'in') {
2433 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" });
2434 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
2438 delete $rule->{iface_in};
2441 # allow standard traffic for management ipset (includes cluster network)
2442 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management
", $ipversion);
2443 my $mngmntsrc = "-m set
--match-set
${mngmnt_ipset_chain
} src
";
2444 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
8006", "-j
$accept_action"); # PVE API
2445 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
5900:5999", "-j
$accept_action"); # PVE VNC Console
2446 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
3128", "-j
$accept_action"); # SPICE Proxy
2447 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
22", "-j
$accept_action"); # SSH
2449 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2450 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
2453 if ($localnet && ($ipversion == $localnet_ver)) {
2454 my $corosync_rule = "-p udp
--dport
5404:5405";
2455 ruleset_addrule($ruleset, $chain, "-s
$localnet -d
$localnet $corosync_rule", "-j
$accept_action");
2456 ruleset_addrule($ruleset, $chain, "-s
$localnet -m addrtype
--dst-type MULTICAST
$corosync_rule", "-j
$accept_action");
2459 # implement input policy
2460 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
2461 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
2463 # host outbound firewall
2464 $chain = "PVEFW-HOST-OUT
";
2465 ruleset_create_chain($ruleset, $chain);
2467 $loglevel = get_option_log_level($options, "log_level_out
");
2469 ruleset_addrule($ruleset, $chain, "-o lo
", "-j ACCEPT
");
2471 ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
2473 # we use RETURN because we may want to check other thigs later
2474 $accept_action = 'RETURN';
2475 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j
$accept_action");
2477 ruleset_addrule($ruleset, $chain, "-p igmp
", "-j
$accept_action"); # important for multicast
2479 # add host rules first, so that cluster wide rules can be overwritten
2480 foreach my $rule (@$rules, @$cluster_rules) {
2481 next if !$rule->{enable} || $rule->{errors};
2482 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2484 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
2486 $rule->{logmsg} = "$rule->{action
}: ";
2487 if ($rule->{type} eq 'group') {
2488 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
2489 } elsif ($rule->{type} eq 'out') {
2490 rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" });
2491 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
2495 delete $rule->{iface_out};
2498 # allow standard traffic on cluster network
2499 if ($localnet && ($ipversion == $localnet_ver)) {
2500 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
8006", "-j
$accept_action"); # PVE API
2501 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
22", "-j
$accept_action"); # SSH
2502 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
5900:5999", "-j
$accept_action"); # PVE VNC Console
2503 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
3128", "-j
$accept_action"); # SPICE Proxy
2505 my $corosync_rule = "-p udp
--dport
5404:5405";
2506 ruleset_addrule($ruleset, $chain, "-d
$localnet $corosync_rule", "-j
$accept_action");
2507 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
$corosync_rule", "-j
$accept_action");
2510 # implement output policy
2511 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
2512 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
2514 ruleset_addrule($ruleset, "PVEFW-OUTPUT
", "", "-j PVEFW-HOST-OUT
");
2515 ruleset_addrule($ruleset, "PVEFW-INPUT
", "", "-j PVEFW-HOST-IN
");
2518 sub generate_group_rules {
2519 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
2521 my $rules = $cluster_conf->{groups}->{$group};
2524 warn "no such security group
'$group'\n";
2525 $rules = []; # create empty chain
2528 my $chain = "GROUP-
${group
}-IN
";
2530 ruleset_create_chain($ruleset, $chain);
2531 ruleset_addrule($ruleset, $chain, "", "-j MARK
--set-mark
$FWACCEPTMARK_OFF"); # clear mark
2533 foreach my $rule (@$rules) {
2534 next if $rule->{type} ne 'in';
2535 next if !$rule->{enable} || $rule->{errors};
2536 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
2537 rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" });
2538 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
2541 $chain = "GROUP-
${group
}-OUT
";
2543 ruleset_create_chain($ruleset, $chain);
2544 ruleset_addrule($ruleset, $chain, "", "-j MARK
--set-mark
$FWACCEPTMARK_OFF"); # clear mark
2546 foreach my $rule (@$rules) {
2547 next if $rule->{type} ne 'out';
2548 next if !$rule->{enable} || $rule->{errors};
2549 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
2550 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2551 # check also other tap rules later
2552 rule_substitude_action($rule, { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject
" });
2553 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf);
2558 my $valid_netdev_names = {};
2559 for (my $i = 0; $i < $MAX_NETS; $i++) {
2560 $valid_netdev_names->{"net
$i"} = 1;
2563 sub get_mark_values {
2564 my ($value, $mask) = @_;
2565 $value = hex($value) if $value =~ /^0x/;
2566 $mask = hex($mask) if defined($mask) && $mask =~ /^0x/;
2567 $mask = 0xffffffff if !defined($mask);
2568 return ($value, $mask);
2572 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env) = @_;
2574 my $orig_line = $line;
2578 # we can add single line comments to the end of the rule
2579 if ($line =~ s/#\s*(.*?)\s*$//) {
2580 $rule->{comment} = decode('utf8', $1);
2583 # we can disable a rule when prefixed with '|'
2585 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
2587 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2588 die "unable to parse rule
: $line\n";
2590 $rule->{type} = lc($1);
2591 $rule->{action} = $2;
2593 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2594 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2595 $rule->{macro} = $1;
2596 $rule->{action} = $2;
2600 while (length($line)) {
2601 if ($line =~ s/^-i (\S+)\s*//) {
2602 $rule->{iface} = $1;
2606 last if $rule->{type} eq 'group';
2608 if ($line =~ s/^-p (\S+)\s*//) {
2609 $rule->{proto} = $1;
2613 if ($line =~ s/^-dport (\S+)\s*//) {
2614 $rule->{dport} = $1;
2618 if ($line =~ s/^-sport (\S+)\s*//) {
2619 $rule->{sport} = $1;
2622 if ($line =~ s/^-source (\S+)\s*//) {
2623 $rule->{source} = $1;
2626 if ($line =~ s/^-dest (\S+)\s*//) {
2630 if ($line =~ s/^-log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) {
2638 die "unable to parse rule parameters
: $line\n" if length($line);
2640 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
2641 if ($rule->{errors}) {
2642 # The verbose flag really means we're running from the CLI and want
2643 # output on the console - in the other case we really want such errors
2644 # to go into the syslog instead.
2645 my $log = $verbose ? sub { warn @_ } : sub { syslog(err => @_) };
2646 $log->("$prefix - errors
in rule parameters
: $orig_line\n");
2647 foreach my $p (keys %{$rule->{errors}}) {
2648 $log->(" $p: $rule->{errors
}->{$p}\n");
2655 sub verify_ethertype {
2657 my $types = get_etc_ethertypes();
2658 die "unknown ethernet protocol type
: $value\n"
2659 if !defined($types->{byname}->{$value}) &&
2660 !defined($types->{byid}->{$value});
2663 sub parse_vmfw_option {
2668 my $loglevels = "emerg
|alert
|crit
|err
|warning
|notice
|info
|debug
|nolog
";
2670 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ipfilter|ips):\s*(0|1)\s*$/i) {
2673 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2675 $value = $2 ? lc($3) : '';
2676 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2679 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2682 } elsif ($line =~ m/^(layer2_protocols):\s*(((\S+)[,]?)+)\s*$/i) {
2685 verify_ethertype($_) foreach split(/\s*,\s*/, $value);
2687 die "can
't parse option '$line'\n"
2690 return ($opt, $value);
2693 sub parse_hostfw_option {
2698 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2700 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid):\s*(0|1)\s*$/i) {
2703 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2705 $value = $2 ? lc($3) : '';
2706 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
2710 die "can't parse option
'$line'\n"
2713 return ($opt, $value);
2716 sub parse_clusterfw_option {
2721 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
2724 if (($value > 1) && ((time() - $value) > 60)) {
2727 } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) {
2730 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2733 } elsif ($line =~ m/^(log_ratelimit):\s*(\S+)\s*$/) {
2737 die "can
't parse option '$line'\n"
2740 return ($opt, $value);
2744 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2746 my $alias = lc($cidr);
2747 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
2748 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
2750 die "no such alias '$cidr'\n" if !$e;;
2752 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
2755 sub parse_ip_or_cidr {
2760 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2763 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2767 die "value does not look like a valid IP address or CIDR network\n";
2770 return wantarray ? ($cidr, $ipversion) : $cidr;
2776 # we can add single line comments to the end of the line
2777 my $comment = decode('utf8
', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2779 if ($line =~ m/^(\S+)\s(\S+)$/) {
2780 my ($name, $cidr) = ($1, $2);
2783 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2788 ipversion => $ipversion,
2790 $data->{comment} = $comment if $comment;
2797 sub generic_fw_config_parser {
2798 my ($filename, $cluster_conf, $empty_conf, $rule_env) = @_;
2803 my $res = $empty_conf;
2806 if ($filename =~ m!^/etc/pve/(.*)$!) {
2807 $raw = PVE::Cluster::get_config($1);
2809 $raw = eval { PVE::Tools::file_get_contents($filename) }; # ignore errors
2814 while ($raw =~ /^\h*(.*?)\h*$/gm) {
2817 next if $line =~ m/^#/;
2818 next if $line =~ m/^\s*$/;
2821 my $prefix = "$filename (line $linenr)";
2823 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
2824 $section = 'options
';
2828 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
2829 $section = 'aliases
';
2833 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
2834 $section = 'groups
';
2838 die "security group name too long\n" if length($group) > $max_group_name_length;
2839 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2842 ($section, $group, $comment) = undef;
2843 warn "$prefix: $err";
2847 $res->{$section}->{$group} = [];
2848 $res->{group_comments}->{$group} = decode('utf8
', $comment)
2853 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
2858 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
2863 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2864 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2867 ($section, $group, $comment) = undef;
2868 warn "$prefix: $err";
2872 $res->{$section}->{$group} = [];
2873 $res->{ipset_comments}->{$group} = decode('utf8
', $comment)
2879 warn "$prefix: skip line - no section\n";
2883 if ($section eq 'options
') {
2886 if ($rule_env eq 'cluster
') {
2887 ($opt, $value) = parse_clusterfw_option($line);
2888 } elsif ($rule_env eq 'host
') {
2889 ($opt, $value) = parse_hostfw_option($line);
2891 ($opt, $value) = parse_vmfw_option($line);
2893 $res->{options}->{$opt} = $value;
2895 warn "$prefix: $@" if $@;
2896 } elsif ($section eq 'aliases
') {
2898 my $data = parse_alias($line);
2899 $res->{aliases}->{lc($data->{name})} = $data;
2901 warn "$prefix: $@" if $@;
2902 } elsif ($section eq 'rules
') {
2904 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env); };
2906 warn "$prefix: $err";
2909 push @{$res->{$section}}, $rule;
2910 } elsif ($section eq 'groups
') {
2912 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group
'); };
2914 warn "$prefix: $err";
2917 push @{$res->{$section}->{$group}}, $rule;
2918 } elsif ($section eq 'ipset
') {
2919 # we can add single line comments to the end of the rule
2920 my $comment = decode('utf8
', $1) if $line =~ s/#\s*(.*?)\s*$//;
2922 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2927 if ($nomatch && !$feature_ipset_nomatch) {
2928 $errors->{nomatch} = "nomatch not supported by kernel";
2932 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2933 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2935 $cidr = parse_ip_or_cidr($cidr);
2940 $errors->{cidr} = $err;
2943 if ($cidr =~ m!/0+$!) {
2944 $errors->{cidr} = "a zero prefix is not allowed in ipset entries\n";
2947 my $entry = { cidr => $cidr };
2948 $entry->{nomatch} = 1 if $nomatch;
2949 $entry->{comment} = $comment if $comment;
2950 $entry->{errors} = $errors if $errors;
2952 if ($verbose && $errors) {
2953 warn "$prefix - errors in ipset '$group': $line\n";
2954 foreach my $p (keys %{$errors}) {
2955 warn " $p: $errors->{$p}\n";
2959 push @{$res->{$section}->{$group}}, $entry;
2961 warn "$prefix: skip line - unknown section\n";
2970 my ($code, @param) = @_;
2974 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2981 sub read_local_vm_config {
2986 my $vmdata = { qemu => $qemu, lxc => $lxc };
2988 my $vmlist = PVE::Cluster::get_vmlist();
2989 return $vmdata if !$vmlist || !$vmlist->{ids};
2990 my $ids = $vmlist->{ids};
2992 foreach my $vmid (keys %$ids) {
2993 next if !$vmid; # skip VE0
2994 my $d = $ids->{$vmid};
2995 next if !$d->{node} || $d->{node} ne $nodename;
2996 next if !$d->{type};
2997 if ($d->{type} eq 'qemu
') {
2998 if ($have_qemu_server) {
2999 my $cfspath = PVE::QemuConfig->cfs_config_path($vmid);
3000 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3001 $qemu->{$vmid} = $conf;
3004 } elsif ($d->{type} eq 'lxc
') {
3006 my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
3007 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
3008 $lxc->{$vmid} = $conf;
3017 sub load_vmfw_conf {
3018 my ($cluster_conf, $rule_env, $vmid, $dir) = @_;
3020 $dir = $pvefw_conf_dir if !defined($dir);
3021 my $filename = "$dir/$vmid.fw";
3028 ipset_comments => {},
3031 my $vmfw_conf = generic_fw_config_parser($filename, $cluster_conf, $empty_conf, $rule_env);
3032 $vmfw_conf->{vmid} = $vmid;
3037 my $format_rules = sub {
3038 my ($rules, $allow_iface) = @_;
3042 foreach my $rule (@$rules) {
3043 if ($rule->{type} eq 'in' || $rule->{type} eq 'out
' || $rule->{type} eq 'group
') {
3044 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
3045 $raw .= uc($rule->{type});
3046 if ($rule->{macro}) {
3047 $raw .= " $rule->{macro}($rule->{action})";
3049 $raw .= " " . $rule->{action};
3051 if ($allow_iface && $rule->{iface}) {
3052 $raw .= " -i $rule->{iface}";
3055 if ($rule->{type} ne 'group
') {
3056 $raw .= " -source $rule->{source}" if $rule->{source};
3057 $raw .= " -dest $rule->{dest}" if $rule->{dest};
3058 $raw .= " -p $rule->{proto}" if $rule->{proto};
3059 $raw .= " -dport $rule->{dport}" if $rule->{dport};
3060 $raw .= " -sport $rule->{sport}" if $rule->{sport};
3061 $raw .= " -log $rule->{log}" if $rule->{log};
3064 $raw .= " # " . encode('utf8
', $rule->{comment})
3065 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
3068 die "unknown rule type '$rule->{type
}'";
3075 my $format_options = sub {
3080 $raw .= "[OPTIONS]\n\n";
3081 foreach my $opt (keys %$options) {
3082 $raw .= "$opt: $options->{$opt}\n";
3089 my $format_aliases = sub {
3094 $raw .= "[ALIASES]\n\n";
3095 foreach my $k (keys %$aliases) {
3096 my $e = $aliases->{$k};
3097 $raw .= "$e->{name} $e->{cidr}";
3098 $raw .= " # " . encode('utf8
', $e->{comment})
3099 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
3107 my $format_ipsets = sub {
3112 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
3113 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
3114 my $utf8comment = encode('utf8
', $comment);
3115 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
3117 $raw .= "[IPSET $ipset]\n\n";
3119 my $options = $fw_conf->{ipset}->{$ipset};
3122 foreach my $entry (@$options) {
3123 $nethash->{$entry->{cidr}} = $entry;
3126 foreach my $cidr (sort keys %$nethash) {
3127 my $entry = $nethash->{$cidr};
3128 my $line = $entry->{nomatch} ? '!' : '';
3129 $line .= $entry->{cidr};
3130 $line .= " # " . encode('utf8
', $entry->{comment})
3131 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
3141 sub save_vmfw_conf {
3142 my ($vmid, $vmfw_conf) = @_;
3146 my $options = $vmfw_conf->{options};
3147 $raw .= &$format_options($options) if $options && scalar(keys %$options);
3149 my $aliases = $vmfw_conf->{aliases};
3150 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
3152 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
3154 my $rules = $vmfw_conf->{rules} || [];
3155 if ($rules && scalar(@$rules)) {
3156 $raw .= "[RULES]\n\n";
3157 $raw .= &$format_rules($rules, 1);
3161 my $filename = "$pvefw_conf_dir/$vmid.fw";
3163 mkdir $pvefw_conf_dir;
3164 PVE::Tools::file_set_contents($filename, $raw);
3170 sub remove_vmfw_conf {
3173 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
3175 unlink $vmfw_conffile;
3178 sub clone_vmfw_conf {
3179 my ($vmid, $newid) = @_;
3181 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
3182 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
3184 if (-f $clonevm_conffile) {
3185 unlink $clonevm_conffile;
3187 if (-f $sourcevm_conffile) {
3188 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
3189 PVE::Tools::file_set_contents($clonevm_conffile, $data);
3193 sub read_vm_firewall_configs {
3194 my ($cluster_conf, $vmdata, $dir) = @_;
3196 my $vmfw_configs = {};
3198 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3199 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm
', $vmid, $dir);
3200 next if !$vmfw_conf->{options}; # skip if file does not exists
3201 $vmfw_configs->{$vmid} = $vmfw_conf;
3203 foreach my $vmid (keys %{$vmdata->{lxc}}) {
3204 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct
', $vmid, $dir);
3205 next if !$vmfw_conf->{options}; # skip if file does not exists
3206 $vmfw_configs->{$vmid} = $vmfw_conf;
3209 return $vmfw_configs;
3212 sub get_option_log_level {
3213 my ($options, $k) = @_;
3215 my $v = $options->{$k};
3216 $v = $default_log_level if !defined($v);
3218 return undef if $v eq '' || $v eq 'nolog
';
3220 return $v if defined($log_level_hash->{$v});
3222 warn "unknown log level ($k = '$v')\n";
3227 sub generate_std_chains {
3228 my ($ruleset, $options, $ipversion) = @_;
3230 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
3232 my $loglevel = get_option_log_level($options, 'smurf_log_level
');
3233 my $chain = 'PVEFW-smurflog
';
3234 if ( $std_chains->{$chain} ) {
3235 foreach my $r (@{$std_chains->{$chain}}) {
3236 $r->{log} = $loglevel;
3240 # same as shorewall logflags action.
3241 $loglevel = get_option_log_level($options, 'tcp_flags_log_level
');
3242 $chain = 'PVEFW-logflags
';
3243 if ( $std_chains->{$chain} ) {
3244 foreach my $r (@{$std_chains->{$chain}}) {
3245 $r->{log} = $loglevel;
3249 foreach my $chain (keys %$std_chains) {
3250 ruleset_create_chain($ruleset, $chain);
3251 foreach my $rule (@{$std_chains->{$chain}}) {
3253 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0);
3255 die "rule $rule as string - should not happen";
3261 sub generate_ipset_chains {
3262 my ($ipset_ruleset, $clusterfw_conf, $fw_conf, $device_ips, $ipsets) = @_;
3264 foreach my $ipset (keys %{$ipsets}) {
3266 my $options = $ipsets->{$ipset};
3268 if ($device_ips && $ipset =~ /^ipfilter-(net\d+)$/) {
3269 if (my $ips = $device_ips->{$1}) {
3270 $options = [@$options, @$ips];
3276 foreach my $entry (@$options) {
3277 next if $entry->{errors}; # skip entries with errors
3280 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
3281 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
3283 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
3285 #http://backreference.org/2013/03/01/ipv6-address-normalization/
3287 # ip_compress_address takes an address only, no CIDR
3288 my ($addr, $prefix_len) = ($cidr =~ m@^([^/]*)(/.*)?$@);
3289 $cidr = lc(Net::IP::ip_compress_address($addr, 6));
3290 $cidr .= $prefix_len if defined($prefix_len);
3296 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
3301 foreach my $ipversion (4, 6) {
3302 my $data = $nethash->{$ipversion};
3304 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
3306 my $hashsize = scalar(@$options);
3307 if ($hashsize <= 64) {
3310 $hashsize = round_powerof2($hashsize);
3313 my $family = $ipversion == "6" ? "inet6" : "inet";
3315 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
3317 foreach my $cidr (sort keys %$data) {
3318 my $entry = $data->{$cidr};
3320 my $cmd = "add $name $cidr";
3321 if ($entry->{nomatch}) {
3322 if ($feature_ipset_nomatch) {
3323 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3325 warn "ignore !$cidr - nomatch not supported by kernel\n";
3328 push @{$ipset_ruleset->{$name}}, $cmd;
3335 sub round_powerof2 {
3339 $int |= $int >> $_ foreach (1,2,4,8,16);
3343 my $set_global_log_ratelimit = sub {
3344 my $cluster_opts = shift;
3346 $global_log_ratelimit = '--limit
1/sec
';
3347 if (defined(my $log_rlimit = $cluster_opts->{log_ratelimit})) {
3348 my $ll_format = $cluster_option_properties->{log_ratelimit}->{format};
3349 my $limit = PVE::JSONSchema::parse_property_string($ll_format, $log_rlimit);
3351 if ($limit->{enable}) {
3352 if (my $rate = $limit->{rate}) {
3353 $global_log_ratelimit = "--limit $rate";
3355 if (my $burst = $limit->{burst}) {
3356 $global_log_ratelimit .= " --limit-burst $burst";
3359 $global_log_ratelimit = undef;
3364 sub load_clusterfw_conf {
3365 my ($filename) = @_;
3367 $filename = $clusterfw_conf_filename if !defined($filename);
3373 group_comments => {},
3375 ipset_comments => {},
3378 my $cluster_conf = generic_fw_config_parser($filename, $empty_conf, $empty_conf, 'cluster
');
3379 $set_global_log_ratelimit->($cluster_conf->{options});
3381 return $cluster_conf;
3384 sub save_clusterfw_conf {
3385 my ($cluster_conf) = @_;
3389 my $options = $cluster_conf->{options};
3390 $raw .= &$format_options($options) if $options && scalar(keys %$options);
3392 my $aliases = $cluster_conf->{aliases};
3393 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
3395 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
3397 my $rules = $cluster_conf->{rules};
3398 if ($rules && scalar(@$rules)) {
3399 $raw .= "[RULES]\n\n";
3400 $raw .= &$format_rules($rules, 1);
3404 if ($cluster_conf->{groups}) {
3405 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3406 my $rules = $cluster_conf->{groups}->{$group};
3407 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3408 my $utf8comment = encode('utf8
', $comment);
3409 $raw .= "[group $group] # $utf8comment\n\n";
3411 $raw .= "[group $group]\n\n";
3414 $raw .= &$format_rules($rules, 0);
3420 mkdir $pvefw_conf_dir;
3421 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3423 unlink $clusterfw_conf_filename;
3427 sub load_hostfw_conf {
3428 my ($cluster_conf, $filename) = @_;
3430 $filename = $hostfw_conf_filename if !defined($filename);
3432 my $empty_conf = { rules => [], options => {}};
3433 return generic_fw_config_parser($filename, $cluster_conf, $empty_conf, 'host
');
3436 sub save_hostfw_conf {
3437 my ($hostfw_conf) = @_;
3441 my $options = $hostfw_conf->{options};
3442 $raw .= &$format_options($options) if $options && scalar(keys %$options);
3444 my $rules = $hostfw_conf->{rules};
3445 if ($rules && scalar(@$rules)) {
3446 $raw .= "[RULES]\n\n";
3447 $raw .= &$format_rules($rules, 1);
3452 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3454 unlink $hostfw_conf_filename;
3459 my ($cluster_conf, $hostfw_conf, $vmdata) = @_;
3463 # fixme: once we read standard chains from config this needs to be put in test/standard cases below
3464 $pve_std_chains = dclone($pve_std_chains_conf);
3466 if ($vmdata) { # test mode
3467 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3468 my $filename = "$testdir/cluster.fw";
3469 $cluster_conf = load_clusterfw_conf($filename);
3471 $filename = "$testdir/host.fw";
3472 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename);
3474 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir);
3475 } else { # normal operation
3476 $cluster_conf = load_clusterfw_conf(undef) if !$cluster_conf;
3478 $hostfw_conf = load_hostfw_conf($cluster_conf, undef) if !$hostfw_conf;
3480 $vmdata = read_local_vm_config();
3481 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef);
3484 return ({},{},{},{}) if !$cluster_conf->{options}->{enable};
3487 if ($cluster_conf->{aliases}->{local_network}) {
3488 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3491 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3493 $cluster_conf->{aliases}->{local_network} = {
3494 name => 'local_network
', cidr => $localnet, ipversion => $localnet_ver };
3497 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3499 my $ruleset = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4);
3500 my $rulesetv6 = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6);
3501 my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata);
3502 my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata);
3504 return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
3507 sub compile_iptables_filter {
3508 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion) = @_;
3512 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3513 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
3515 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3517 my $hostfw_options = $hostfw_conf->{options} || {};
3519 # fixme: what log level should we use here?
3520 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3522 my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0;
3523 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT");
3525 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
3526 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
3528 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+", "-j PVEFW-FWBR-IN");
3530 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3531 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+", "-j PVEFW-FWBR-OUT");
3533 generate_std_chains($ruleset, $hostfw_options, $ipversion);
3535 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
3537 if ($hostfw_enable) {
3538 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
3539 warn $@ if $@; # just to be sure - should not happen
3542 # generate firewall rules for QEMU VMs
3543 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
3545 my $conf = $vmdata->{qemu}->{$vmid};
3546 my $vmfw_conf = $vmfw_configs->{$vmid};
3547 return if !$vmfw_conf;
3549 foreach my $netid (sort keys %$conf) {
3550 next if $netid !~ m/^net(\d+)$/;
3551 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3552 next if !$net->{firewall};
3553 my $iface = "tap${vmid}i$1";
3555 my $macaddr = $net->{macaddr};
3556 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3557 $vmfw_conf, $vmid, 'IN
', $ipversion);
3558 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3559 $vmfw_conf, $vmid, 'OUT
', $ipversion);
3562 warn $@ if $@; # just to be sure - should not happen
3565 # generate firewall rules for LXC containers
3566 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
3568 my $conf = $vmdata->{lxc}->{$vmid};
3569 my $vmfw_conf = $vmfw_configs->{$vmid};
3570 return if !$vmfw_conf;
3572 if ($vmfw_conf->{options}->{enable}) {
3573 foreach my $netid (sort keys %$conf) {
3574 next if $netid !~ m/^net(\d+)$/;
3575 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3576 next if !$net->{firewall};
3577 my $iface = "veth${vmid}i$1";
3578 my $macaddr = $net->{hwaddr};
3579 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3580 $vmfw_conf, $vmid, 'IN
', $ipversion);
3581 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3582 $vmfw_conf, $vmid, 'OUT
', $ipversion);
3586 warn $@ if $@; # just to be sure - should not happen
3589 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
3590 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS");
3596 sub mac_to_linklocal {
3598 my @parts = split(/:/, $macaddr);
3599 # The standard link local address uses the fe80::/64 prefix with the
3600 # modified EUI-64 identifier derived from the MAC address by flipping the
3601 # universal/local bit and inserting FF:FE in the middle.
3603 $parts[0] = sprintf("%02x", hex($parts[0]) ^ 0x02);
3604 my @meui64 = (@parts[0,1,2], 'ff
', 'fe
', @parts[3,4,5]);
3605 return "fe80::$parts[0]$parts[1]:$parts[2]FF:FE$parts[3]:$parts[4]$parts[5]";
3608 sub compile_ipsets {
3609 my ($cluster_conf, $vmfw_configs, $vmdata) = @_;
3612 if ($cluster_conf->{aliases}->{local_network}) {
3613 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3616 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3618 $cluster_conf->{aliases}->{local_network} = {
3619 name => 'local_network
', cidr => $localnet, ipversion => $localnet_ver };
3622 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3625 my $ipset_ruleset = {};
3627 # generate ipsets for QEMU VMs
3628 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3630 my $conf = $vmdata->{qemu}->{$vmid};
3631 my $vmfw_conf = $vmfw_configs->{$vmid};
3632 return if !$vmfw_conf;
3634 # When the 'ipfilter
' option is enabled every device for which there
3635 # is no 'ipfilter-netX
' ipset defiend gets an implicit empty default
3637 # The reason is that ipfilter ipsets are always filled with standard
3638 # IPv6 link-local filters.
3639 my $ipsets = $vmfw_conf->{ipset};
3640 my $implicit_sets = {};
3642 my $device_ips = {};
3643 foreach my $netid (keys %$conf) {
3644 next if $netid !~ m/^net(\d+)$/;
3645 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3646 next if !$net->{firewall};
3648 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3649 $implicit_sets->{"ipfilter-$netid"} = [];
3652 my $macaddr = $net->{macaddr};
3653 my $linklocal = mac_to_linklocal($macaddr);
3654 $device_ips->{$netid} = [
3655 { cidr => $linklocal },
3656 { cidr => 'fe80
::/10', nomatch => 1 }
3660 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3661 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
3663 warn $@ if $@; # just to be sure - should not happen
3666 # generate firewall rules for LXC containers
3667 foreach my $vmid (keys %{$vmdata->{lxc}}) {
3669 my $conf = $vmdata->{lxc}->{$vmid};
3670 my $vmfw_conf = $vmfw_configs->{$vmid};
3671 return if !$vmfw_conf;
3673 # When the 'ipfilter
' option is enabled every device for which there
3674 # is no 'ipfilter-netX
' ipset defiend gets an implicit empty default
3676 # The reason is that ipfilter ipsets are always filled with standard
3677 # IPv6 link-local filters, as well as the IP addresses configured
3678 # for the container.
3679 my $ipsets = $vmfw_conf->{ipset};
3680 my $implicit_sets = {};
3682 my $device_ips = {};
3683 foreach my $netid (keys %$conf) {
3684 next if $netid !~ m/^net(\d+)$/;
3685 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3686 next if !$net->{firewall};
3688 if ($vmfw_conf->{options}->{ipfilter} && !$ipsets->{"ipfilter-$netid"}) {
3689 $implicit_sets->{"ipfilter-$netid"} = [];
3692 my $macaddr = $net->{hwaddr};
3693 my $linklocal = mac_to_linklocal($macaddr);
3694 my $set = $device_ips->{$netid} = [
3695 { cidr => $linklocal },
3696 { cidr => 'fe80
::/10', nomatch => 1 }
3698 if (defined($net->{ip}) && $net->{ip} =~ m!^($IPV4RE)(?:/\d+)?$!) {
3699 push @$set, { cidr => $1 };
3701 if (defined($net->{ip6}) && $net->{ip6} =~ m!^($IPV6RE)(?:/\d+)?$!) {
3702 push @$set, { cidr => $1 };
3706 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $ipsets);
3707 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf, $device_ips, $implicit_sets);
3709 warn $@ if $@; # just to be sure - should not happen
3712 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf, undef, $cluster_conf->{ipset});
3714 return $ipset_ruleset;
3717 sub compile_ebtables_filter {
3718 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata) = @_;
3720 if (!($cluster_conf->{options}->{ebtables} // 1)) {
3726 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3728 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3729 #for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED
', to speedup rules
3730 ruleset_addrule($ruleset, 'PVEFW-FORWARD
', '-p IPv4
', '-j ACCEPT
');
3731 ruleset_addrule($ruleset, 'PVEFW-FORWARD
', '-p IPv6
', '-j ACCEPT
');
3732 ruleset_addrule($ruleset, 'PVEFW-FORWARD
', '-o fwln
+', '-j PVEFW-FWBR-OUT
');
3734 # generate firewall rules for QEMU VMs
3735 foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
3737 my $conf = $vmdata->{qemu}->{$vmid};
3738 my $vmfw_conf = $vmfw_configs->{$vmid};
3739 return if !$vmfw_conf;
3740 my $ipsets = $vmfw_conf->{ipset};
3742 foreach my $netid (sort keys %$conf) {
3743 next if $netid !~ m/^net(\d+)$/;
3744 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3745 next if !$net->{firewall};
3746 my $iface = "tap${vmid}i$1";
3747 my $macaddr = $net->{macaddr};
3749 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3750 foreach my $ipaddr (@$ipset) {
3751 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3752 next if !$ip || ($version && $version != 4);
3753 push(@$arpfilter, $ip);
3756 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
3759 warn $@ if $@; # just to be sure - should not happen
3762 # generate firewall rules for LXC containers
3763 foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
3765 my $conf = $vmdata->{lxc}->{$vmid};
3767 my $vmfw_conf = $vmfw_configs->{$vmid};
3768 return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
3769 my $ipsets = $vmfw_conf->{ipset};
3771 foreach my $netid (sort keys %$conf) {
3772 next if $netid !~ m/^net(\d+)$/;
3773 my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
3774 next if !$net->{firewall};
3775 my $iface = "veth${vmid}i$1";
3776 my $macaddr = $net->{hwaddr};
3778 if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
3779 foreach my $ipaddr (@$ipset) {
3780 my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
3781 next if !$ip || ($version && $version != 4);
3782 push(@$arpfilter, $ip);
3785 if (defined(my $ip = $net->{ip}) && $vmfw_conf->{options}->{ipfilter}) {
3786 # ebtables changes this to a .0/MASK network but we just
3787 # want the address here, no network - see #2193
3789 push @$arpfilter, $ip;
3791 generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
3794 warn $@ if $@; # just to be sure - should not happen
3800 sub generate_tap_layer2filter {
3801 my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_;
3802 my $options = $vmfw_conf->{options};
3804 my $tapchain = $iface."-OUT";
3806 # ebtables remove zeros from mac pairs
3807 $macaddr =~ s/0([0-9a-f])/$1/ig;
3808 $macaddr = lc($macaddr);
3810 ruleset_create_chain($ruleset, $tapchain);
3812 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
3813 ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP
');
3817 my $arpchain = $tapchain."-ARP";
3818 ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain");
3819 ruleset_create_chain($ruleset, $arpchain);
3821 foreach my $ip (@{$arpfilter}) {
3822 ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN
');
3824 ruleset_addrule($ruleset, $arpchain, '', '-j DROP
');
3827 if (defined($options->{layer2_protocols})){
3828 my $protochain = $tapchain."-PROTO";
3829 ruleset_addrule($ruleset, $tapchain, '', "-j $protochain");
3830 ruleset_create_chain($ruleset, $protochain);
3832 foreach my $proto (split(/,/, $options->{layer2_protocols})) {
3833 ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN
');
3835 ruleset_addrule($ruleset, $protochain, '', '-j DROP
');
3838 ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT
');
3840 ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT
', "-i $iface", "-j $tapchain");
3843 # the parameter $change_only_regex changes two things if defined:
3844 # * all chains not matching it will be left intact
3845 # * both the $active_chains hash and the returned status_hash have different
3846 # structure (they contain a key named 'rules
').
3847 sub get_ruleset_status {
3848 my ($ruleset, $active_chains, $digest_fn, $change_only_regex) = @_;
3850 my $statushash = {};
3852 foreach my $chain (sort keys %$ruleset) {
3853 my $rules = $ruleset->{$chain};
3854 my $sig = &$digest_fn($rules);
3857 $statushash->{$chain}->{sig} = $sig;
3858 if (defined($change_only_regex)) {
3859 $oldsig = $active_chains->{$chain}->{sig};
3860 $statushash->{$chain}->{rules} = $rules;
3862 $oldsig = $active_chains->{$chain};
3864 if (!defined($oldsig)) {
3865 $statushash->{$chain}->{action} = 'create
';
3867 if ($oldsig eq $sig) {
3868 $statushash->{$chain}->{action} = 'exists';
3870 $statushash->{$chain}->{action} = 'update
';
3874 print "$statushash->{$chain}->{action} $chain ($sig)\n";
3875 foreach my $cmd (@{$rules}) {
3881 foreach my $chain (sort keys %$active_chains) {
3882 next if defined($ruleset->{$chain});
3883 my $action = 'delete';
3884 my $sig = $active_chains->{$chain};
3885 if (defined($change_only_regex)) {
3886 $action = 'ignore
' if ($chain !~ m/$change_only_regex/);
3887 $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules};
3890 $statushash->{$chain}->{action} = $action;
3891 $statushash->{$chain}->{sig} = $sig;
3892 print "$action $chain ($sig)\n" if $verbose;
3898 sub print_sig_rule {
3899 my ($chain, $sig) = @_;
3901 # We just use this to store a SHA1 checksum used to detect changes
3902 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
3905 sub get_ruleset_cmdlist {
3906 my ($ruleset, $iptablescmd) = @_;
3908 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
3910 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd);
3911 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest);
3913 # create missing chains first
3914 foreach my $chain (sort keys %$ruleset) {
3915 my $stat = $statushash->{$chain};
3916 die "internal error" if !$stat;
3917 next if $stat->{action} ne 'create
';
3919 $cmdlist .= ":$chain - [0:0]\n";
3922 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3923 my $chain = "PVEFW-$h";
3924 if ($ruleset->{$chain} && !$hooks->{$h}) {
3925 $cmdlist .= "-A $h -j $chain\n";
3929 foreach my $chain (sort keys %$ruleset) {
3930 my $stat = $statushash->{$chain};
3931 die "internal error" if !$stat;
3933 if ($stat->{action
} eq 'update' || $stat->{action
} eq 'create') {
3934 $cmdlist .= "-F $chain\n";
3935 foreach my $cmd (@{$ruleset->{$chain}}) {
3936 $cmdlist .= "$cmd\n";
3938 $cmdlist .= print_sig_rule
($chain, $stat->{sig
});
3939 } elsif ($stat->{action
} eq 'delete') {
3940 die "internal error"; # this should not happen
3941 } elsif ($stat->{action
} eq 'exists') {
3944 die "internal error - unknown status '$stat->{action}'";
3948 foreach my $chain (keys %$statushash) {
3949 next if $statushash->{$chain}->{action
} ne 'delete';
3950 $cmdlist .= "-F $chain\n";
3952 foreach my $chain (keys %$statushash) {
3953 next if $statushash->{$chain}->{action
} ne 'delete';
3954 next if $chain eq 'PVEFW-INPUT';
3955 next if $chain eq 'PVEFW-OUTPUT';
3956 next if $chain eq 'PVEFW-FORWARD';
3957 $cmdlist .= "-X $chain\n";
3960 my $changes = $cmdlist ne "*filter\n" ?
1 : 0;
3962 $cmdlist .= "COMMIT\n";
3964 return wantarray ?
($cmdlist, $changes) : $cmdlist;
3967 my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/;
3969 sub get_ebtables_cmdlist
{
3973 my $cmdlist = "*filter\n";
3975 my $active_chains = ebtables_get_chains
();
3976 my $statushash = get_ruleset_status
($ruleset, $active_chains,
3977 \
&iptables_chain_digest
,
3978 $pve_ebtables_chainname_regex);
3980 # create chains first and make sure PVE rules are evaluated if active
3981 my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD';
3982 my $pve_include = 0;
3983 foreach my $chain (sort keys %$statushash) {
3984 next if ($statushash->{$chain}->{action
} eq 'delete');
3985 $cmdlist .= ":$chain ACCEPT\n";
3986 $pve_include = 1 if ($chain eq 'PVEFW-FORWARD');
3989 foreach my $chain (sort keys %$statushash) {
3990 my $stat = $statushash->{$chain};
3991 next if ($stat->{action
} eq 'delete');
3992 $changes = 1 if ($stat->{action
} !~ 'ignore|exists');
3994 foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) {
3995 if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) {
3996 next if ! $pve_include;
3999 $cmdlist .= "$cmd\n";
4002 $cmdlist .= "$append_pve_to_forward\n" if $pve_include;
4004 return wantarray ?
($cmdlist, $changes) : $cmdlist;
4007 sub get_ipset_cmdlist
{
4012 my $delete_cmdlist = "";
4014 my $active_chains = ipset_get_chains
();
4015 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&ipset_chain_digest
);
4017 # remove stale _swap chains
4018 foreach my $chain (keys %$active_chains) {
4019 if ($chain =~ m/^PVEFW-\S+_swap$/) {
4020 $cmdlist .= "destroy $chain\n";
4024 foreach my $chain (keys %$ruleset) {
4025 my $stat = $statushash->{$chain};
4026 die "internal error" if !$stat;
4028 if ($stat->{action
} eq 'create') {
4029 foreach my $cmd (@{$ruleset->{$chain}}) {
4030 $cmdlist .= "$cmd\n";
4035 foreach my $chain (keys %$ruleset) {
4036 my $stat = $statushash->{$chain};
4037 die "internal error" if !$stat;
4039 if ($stat->{action
} eq 'update') {
4040 my $chain_swap = $chain."_swap";
4042 foreach my $cmd (@{$ruleset->{$chain}}) {
4043 $cmd =~ s/$chain/$chain_swap/;
4044 $cmdlist .= "$cmd\n";
4046 $cmdlist .= "swap $chain_swap $chain\n";
4047 $cmdlist .= "flush $chain_swap\n";
4048 $cmdlist .= "destroy $chain_swap\n";
4052 # the remove unused chains
4053 foreach my $chain (keys %$statushash) {
4054 next if $statushash->{$chain}->{action
} ne 'delete';
4056 $delete_cmdlist .= "flush $chain\n";
4057 $delete_cmdlist .= "destroy $chain\n";
4060 my $changes = ($cmdlist || $delete_cmdlist) ?
1 : 0;
4062 return ($cmdlist, $delete_cmdlist, $changes);
4066 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = @_;
4068 enable_bridge_firewall
();
4070 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
4071 get_ipset_cmdlist
($ipset_ruleset);
4073 my ($cmdlist, $changes) = get_ruleset_cmdlist
($ruleset);
4074 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist
($rulesetv6, "ip6tables");
4075 my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist
($ebtables_ruleset);
4078 if ($ipset_changes) {
4079 print "ipset changes:\n";
4080 print $ipset_create_cmdlist if $ipset_create_cmdlist;
4081 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
4085 print "iptables changes:\n";
4090 print "ip6tables changes:\n";
4094 if ($ebtables_changes) {
4095 print "ebtables changes:\n";
4096 print $ebtables_cmdlist;
4100 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
4101 PVE
::Tools
::file_set_contents
($tmpfile, $ipset_create_cmdlist || '');
4103 ipset_restore_cmdlist
($ipset_create_cmdlist);
4105 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
4106 PVE
::Tools
::file_set_contents
($tmpfile, $cmdlist || '');
4108 iptables_restore_cmdlist
($cmdlist);
4110 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
4111 PVE
::Tools
::file_set_contents
($tmpfile, $cmdlistv6 || '');
4113 ip6tables_restore_cmdlist
($cmdlistv6);
4115 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
4116 PVE
::Tools
::file_set_contents
($tmpfile, $ipset_delete_cmdlist || '');
4118 ipset_restore_cmdlist
($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
4120 ebtables_restore_cmdlist
($ebtables_cmdlist);
4122 $tmpfile = "$pve_fw_status_dir/ebtablescmdlist";
4123 PVE
::Tools
::file_set_contents
($tmpfile, $ebtables_cmdlist || '');
4125 # test: re-read status and check if everything is up to date
4126 my $active_chains = iptables_get_chains
();
4127 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&iptables_chain_digest
);
4130 foreach my $chain (sort keys %$ruleset) {
4131 my $stat = $statushash->{$chain};
4132 if ($stat->{action
} ne 'exists') {
4133 warn "unable to update chain '$chain'\n";
4138 my $active_chainsv6 = iptables_get_chains
("ip6tables");
4139 my $statushashv6 = get_ruleset_status
($rulesetv6, $active_chainsv6, \
&iptables_chain_digest
);
4141 foreach my $chain (sort keys %$rulesetv6) {
4142 my $stat = $statushashv6->{$chain};
4143 if ($stat->{action
} ne 'exists') {
4144 warn "unable to update chain '$chain'\n";
4149 my $active_ebtables_chains = ebtables_get_chains
();
4150 my $ebtables_statushash = get_ruleset_status
($ebtables_ruleset,
4151 $active_ebtables_chains, \
&iptables_chain_digest
,
4152 $pve_ebtables_chainname_regex);
4154 foreach my $chain (sort keys %$ebtables_ruleset) {
4155 my $stat = $ebtables_statushash->{$chain};
4156 if ($stat->{action
} ne 'exists') {
4157 warn "ebtables : unable to update chain '$chain'\n";
4162 die "unable to apply firewall changes\n" if $errors;
4164 update_nf_conntrack_max
($hostfw_conf);
4166 update_nf_conntrack_tcp_timeout_established
($hostfw_conf);
4168 update_nf_conntrack_logging
($hostfw_conf);
4171 sub update_nf_conntrack_max
{
4172 my ($hostfw_conf) = @_;
4174 my $max = 65536; # reasonable default
4176 my $options = $hostfw_conf->{options
} || {};
4178 if (defined($options->{nf_conntrack_max
}) && ($options->{nf_conntrack_max
} > $max)) {
4179 $max = $options->{nf_conntrack_max
};
4180 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
4183 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
4184 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
4186 my $current = int(PVE
::Tools
::file_read_firstline
($filename_nf_conntrack_max) || $max);
4188 if ($current != $max) {
4189 my $hashsize = int($max/4);
4190 PVE
::ProcFSTools
::write_proc_entry
($filename_hashsize, $hashsize);
4191 PVE
::ProcFSTools
::write_proc_entry
($filename_nf_conntrack_max, $max);
4195 sub update_nf_conntrack_tcp_timeout_established
{
4196 my ($hostfw_conf) = @_;
4198 my $options = $hostfw_conf->{options
} || {};
4200 my $value = defined($options->{nf_conntrack_tcp_timeout_established
}) ?
$options->{nf_conntrack_tcp_timeout_established
} : 432000;
4202 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
4205 my $log_nf_conntrack_enabled = undef;
4206 sub update_nf_conntrack_logging
{
4207 my ($hostfw_conf) = @_;
4209 my $options = $hostfw_conf->{options
} || {};
4210 my $value = $options->{log_nf_conntrack
} || 0;
4211 if (!defined($log_nf_conntrack_enabled)
4212 || $value != $log_nf_conntrack_enabled)
4214 my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack";
4215 PVE
::Tools
::file_set_contents
($tmpfile, $value);
4217 PVE
::Tools
::run_command
([qw(systemctl try-reload-or-restart pvefw-logger.service)]);
4218 $log_nf_conntrack_enabled = $value;
4222 sub remove_pvefw_chains
{
4224 PVE
::Firewall
::remove_pvefw_chains_iptables
("iptables");
4225 PVE
::Firewall
::remove_pvefw_chains_iptables
("ip6tables");
4226 PVE
::Firewall
::remove_pvefw_chains_ipset
();
4230 sub remove_pvefw_chains_iptables
{
4231 my ($iptablescmd) = @_;
4233 my ($chash, $hooks) = iptables_get_chains
($iptablescmd);
4234 my $cmdlist = "*filter\n";
4236 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
4238 $cmdlist .= "-D $h -j PVEFW-$h\n";
4242 foreach my $chain (keys %$chash) {
4243 $cmdlist .= "-F $chain\n";
4246 foreach my $chain (keys %$chash) {
4247 $cmdlist .= "-X $chain\n";
4249 $cmdlist .= "COMMIT\n";
4251 if($iptablescmd eq "ip6tables") {
4252 ip6tables_restore_cmdlist
($cmdlist);
4254 iptables_restore_cmdlist
($cmdlist);
4258 sub remove_pvefw_chains_ipset
{
4260 my $ipset_chains = ipset_get_chains
();
4264 foreach my $chain (keys %$ipset_chains) {
4265 $cmdlist .= "flush $chain\n";
4266 $cmdlist .= "destroy $chain\n";
4269 ipset_restore_cmdlist
($cmdlist) if $cmdlist;
4273 my $cluster_conf = load_clusterfw_conf
();
4274 my $cluster_options = $cluster_conf->{options
};
4275 my $enable = $cluster_options->{enable
};
4279 # load required modules here
4285 my $cluster_conf = load_clusterfw_conf
();
4286 my $cluster_options = $cluster_conf->{options
};
4288 if (!$cluster_options->{enable
}) {
4289 PVE
::Firewall
::remove_pvefw_chains
();
4293 my $hostfw_conf = load_hostfw_conf
($cluster_conf);
4295 my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = compile
($cluster_conf, $hostfw_conf);
4297 apply_ruleset
($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);