12 use PVE
::Tools
qw(run_command lock_file);
16 my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
18 # imported/converted from: /usr/share/shorewall/macro.*
21 { action
=> 'PARAM', proto
=> 'udp', dport
=> '10080' },
22 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10080' },
25 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '113' },
28 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '179' },
31 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6889' },
32 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
35 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6999' },
36 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
39 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2401' },
42 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1494' },
43 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1604' },
44 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2598' },
47 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3689' },
48 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3689' },
51 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6277' },
54 { action
=> 'PARAM', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
55 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
58 { action
=> 'PARAM', proto
=> 'udp', dport
=> '53' },
59 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '53' },
62 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3632' },
65 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4662' },
66 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4665' },
69 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '21' },
72 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '79' },
75 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2086' },
76 { action
=> 'PARAM', proto
=> 'udp', dport
=> '2086' },
77 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1080' },
78 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1080' },
81 { action
=> 'PARAM', proto
=> '47' },
82 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
85 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9418' },
88 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6346' },
89 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6346' },
92 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '11371' },
95 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
98 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
101 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3130' },
104 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5190' },
107 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '143' },
110 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '993' },
113 { action
=> 'PARAM', proto
=> '94' },
114 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '94' },
117 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '631' },
120 { action
=> 'PARAM', proto
=> 'udp', dport
=> '631' },
123 { action
=> 'PARAM', source
=> 'SOURCE', dest
=> 'DEST', proto
=> 'tcp', dport
=> '631' },
124 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '631' },
127 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
128 { action
=> 'PARAM', proto
=> '50' },
129 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
130 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
133 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
134 { action
=> 'PARAM', proto
=> '51' },
135 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
136 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '51' },
139 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500' },
140 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4500' },
141 { action
=> 'PARAM', proto
=> '50' },
142 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500' },
143 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '4500' },
144 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
147 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6667' },
150 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5222' },
153 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5223' },
156 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5269' },
159 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9100' },
162 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1701' },
163 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1701' },
166 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '389' },
169 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '636' },
172 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1863' },
175 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1433' },
178 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
179 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
180 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
183 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4949' },
186 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3306' },
189 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '119' },
192 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '563' },
195 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
198 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
199 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '123' },
202 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
203 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '123' },
206 { action
=> 'PARAM', proto
=> '89' },
209 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1194' },
212 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5632' },
213 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5631' },
216 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '110' },
219 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '995' },
222 { action
=> 'PARAM', proto
=> '47' },
223 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
224 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1723' },
227 { action
=> 'PARAM', proto
=> 'icmp', dport
=> '8' },
230 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5432' },
233 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '515' },
236 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3389' },
239 { action
=> 'PARAM', proto
=> 'udp', dport
=> '520' },
240 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '520' },
243 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '953' },
246 { action
=> 'ACCEPT', proto
=> 'tcp', dport
=> '2703' },
249 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
252 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '873' },
255 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6566' },
258 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
259 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
260 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
261 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
264 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
265 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
266 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
267 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
268 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '135,445' },
269 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '137:139' },
270 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
271 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'tcp', dport
=> '135,139,445' },
274 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '901' },
277 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
280 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
283 { action
=> 'PARAM', proto
=> 'udp', dport
=> '161:162' },
284 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '161' },
287 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '783' },
290 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '22' },
293 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3690' },
296 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3874' },
297 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3740' },
298 { action
=> 'PARAM', proto
=> '41' },
299 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5072,8374' },
302 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3128' },
305 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
308 { action
=> 'PARAM', proto
=> 'udp', dport
=> '514' },
309 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '514' },
312 { action
=> 'PARAM', proto
=> 'udp', dport
=> '69' },
315 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '23' },
318 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '992' },
321 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
324 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
325 { action
=> 'PARAM', proto
=> 'icmp', dport
=> '8' },
328 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5900:5909' },
331 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5500' },
334 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
335 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
338 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '8080' },
341 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10000' },
344 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '43' },
348 my $pve_fw_parsed_macros;
349 my $pve_fw_preferred_macro_names = {};
351 my $pve_std_chains = {
352 'PVEFW-SET-ACCEPT-MARK' => [
353 "-j MARK --set-mark 1",
355 'PVEFW-DropBroadcast' => [
356 # same as shorewall 'Broadcast'
357 # simply DROP BROADCAST/MULTICAST/ANYCAST
358 # we can use this to reduce logging
359 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
360 { action
=> 'DROP', dsttype
=> 'MULTICAST' },
361 { action
=> 'DROP', dsttype
=> 'ANYCAST' },
362 { action
=> 'DROP', dest
=> '224.0.0.0/4' },
365 # same as shorewall 'reject'
366 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
367 { action
=> 'DROP', source
=> '224.0.0.0/4' },
368 { action
=> 'DROP', proto
=> 'icmp' },
369 "-p tcp -j REJECT --reject-with tcp-reset",
370 "-p udp -j REJECT --reject-with icmp-port-unreachable",
371 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
372 "-j REJECT --reject-with icmp-host-prohibited",
375 # same as shorewall 'Drop', which is equal to DROP,
376 # but REJECT/DROP some packages to reduce logging,
377 # and ACCEPT critical ICMP types
378 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
379 # we are not interested in BROADCAST/MULTICAST/ANYCAST
380 { action
=> 'PVEFW-DropBroadcast' },
381 # ACCEPT critical ICMP types
382 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
383 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
384 # Drop packets with INVALID state
385 "-m conntrack --ctstate INVALID -j DROP",
386 # Drop Microsoft SMB noise
387 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
388 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
389 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
390 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
391 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
392 # Drop new/NotSyn traffic so that it doesn't get logged
393 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
395 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
398 # same as shorewall 'Reject', which is equal to Reject,
399 # but REJECT/DROP some packages to reduce logging,
400 # and ACCEPT critical ICMP types
401 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
402 # we are not interested in BROADCAST/MULTICAST/ANYCAST
403 { action
=> 'PVEFW-DropBroadcast' },
404 # ACCEPT critical ICMP types
405 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
406 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
407 # Drop packets with INVALID state
408 "-m conntrack --ctstate INVALID -j DROP",
409 # Drop Microsoft SMB noise
410 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
411 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
412 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
413 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
414 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
415 # Drop new/NotSyn traffic so that it doesn't get logged
416 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
418 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
420 'PVEFW-logflags' => [
421 # same as shorewall logflags action. (fixme: enable/disable logging)
422 "-j LOG --log-prefix \"logflags-dropped:\" --log-level 4 --log-ip-options",
425 'PVEFW-tcpflags' => [
426 # same as shorewall tcpflags action.
427 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
428 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
429 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
430 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
431 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
432 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
434 'PVEFW-smurflog' => [
435 # same as shorewall smurflog. (fixme: enable/disable logging)
436 "-j LOG --log-prefix \"smurfs-dropped\" --log-level 4",
440 # same as shorewall smurfs action
441 # Filter packets for smurfs (packets with a broadcast address as the source).
442 "-s 0.0.0.0/32 -j RETURN",
443 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
444 "-s 224.0.0.0/4 -g PVEFW-smurflog",
448 # iptables -p icmp -h
449 my $icmp_type_names = {
452 'destination-unreachable' => 1,
453 'network-unreachable' => 1,
454 'host-unreachable' => 1,
455 'protocol-unreachable' => 1,
456 'port-unreachable' => 1,
457 'fragmentation-needed' => 1,
458 'source-route-failed' => 1,
459 'network-unknown' => 1,
461 'network-prohibited' => 1,
462 'host-prohibited' => 1,
463 'TOS-network-unreachable' => 1,
464 'TOS-host-unreachable' => 1,
465 'communication-prohibited' => 1,
466 'host-precedence-violation' => 1,
467 'precedence-cutoff' => 1,
468 'source-quench' => 1,
470 'network-redirect' => 1,
471 'host-redirect' => 1,
472 'TOS-network-redirect' => 1,
473 'TOS-host-redirect' => 1,
475 'router-advertisement' => 1,
476 'router-solicitation' => 1,
477 'time-exceeded' => 1,
478 'ttl-zero-during-transit' => 1,
479 'ttl-zero-during-reassembly' => 1,
480 'parameter-problem' => 1,
481 'ip-header-bad' => 1,
482 'required-option-missing' => 1,
483 'timestamp-request' => 1,
484 'timestamp-reply' => 1,
485 'address-mask-request' => 1,
486 'address-mask-reply' => 1,
489 sub get_firewall_macros
{
491 return $pve_fw_parsed_macros if $pve_fw_parsed_macros;
493 $pve_fw_parsed_macros = {};
495 foreach my $k (keys %$pve_fw_macros) {
498 my $macro = $pve_fw_macros->{$k};
499 $pve_fw_preferred_macro_names->{$name} = $k;
500 $pve_fw_parsed_macros->{$name} = $macro;
503 return $pve_fw_parsed_macros;
508 sub get_etc_services
{
510 return $etc_services if $etc_services;
512 my $filename = "/etc/services";
514 my $fh = IO
::File-
>new($filename, O_RDONLY
);
516 warn "unable to read '$filename' - $!\n";
522 while (my $line = <$fh>) {
524 next if $line =~m/^#/;
525 next if ($line =~m/^\s*$/);
527 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
528 $services->{byid
}->{$2}->{name
} = $1;
529 $services->{byid
}->{$2}->{port
} = $2;
530 $services->{byid
}->{$2}->{$3} = 1;
531 $services->{byname
}->{$1} = $services->{byid
}->{$2};
537 $etc_services = $services;
540 return $etc_services;
545 sub get_etc_protocols
{
546 return $etc_protocols if $etc_protocols;
548 my $filename = "/etc/protocols";
550 my $fh = IO
::File-
>new($filename, O_RDONLY
);
552 warn "unable to read '$filename' - $!\n";
558 while (my $line = <$fh>) {
560 next if $line =~m/^#/;
561 next if ($line =~m/^\s*$/);
563 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
564 $protocols->{byid
}->{$2}->{name
} = $1;
565 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
571 $etc_protocols = $protocols;
573 return $etc_protocols;
576 sub parse_address_list
{
580 foreach my $aor (split(/,/, $str)) {
581 if (!Net
::IP-
>new($aor)) {
582 my $err = Net
::IP
::Error
();
583 die "invalid IP address: $err\n";
591 sub parse_port_name_number_or_range
{
594 my $services = PVE
::Firewall
::get_etc_services
();
596 foreach my $item (split(/,/, $str)) {
600 foreach my $pon (split(':', $item, 2)) {
601 $pon = $services->{byname
}->{$pon}->{port
} if $services->{byname
}->{$pon}->{port
};
602 if ($pon =~ m/^\d+$/){
603 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65535;
604 die "port '$pon' must be bigger than port '$oldpon' \n" if $oldpon && ($pon < $oldpon);
607 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname
}->{$pon};
615 my $bridge_firewall_enabled = 0;
617 sub enable_bridge_firewall
{
619 return if $bridge_firewall_enabled; # only once
621 system("echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables");
622 system("echo 1 > /proc/sys/net/bridge/bridge-nf-call-ip6tables");
624 $bridge_firewall_enabled = 1;
627 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
632 run_command
("/sbin/iptables $cmd", outfunc
=> sub {}, errfunc
=> sub {});
635 sub iptables_restore_cmdlist
{
638 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist);
641 sub iptables_get_chains
{
645 # check what chains we want to track
646 my $is_pvefw_chain = sub {
649 return 1 if $name =~ m/^PVEFW-\S+$/;
651 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
652 return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT)$/;
653 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
663 return if $line =~ m/^#/;
664 return if $line =~ m/^\s*$/;
666 if ($line =~ m/^\*(\S+)$/) {
671 return if $table ne 'filter';
673 if ($line =~ m/^:(\S+)\s/) {
675 return if !&$is_pvefw_chain($chain);
676 $res->{$chain} = "unknown";
677 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
678 my ($chain, $sig) = ($1, $2);
679 return if !&$is_pvefw_chain($chain);
680 $res->{$chain} = $sig;
682 # simply ignore the rest
687 run_command
("/sbin/iptables-save", outfunc
=> $parser);
692 sub iptables_chain_exist
{
696 iptables
("-n --list $chain");
703 sub iptables_rule_exist
{
707 iptables
("-C $rule");
714 sub ruleset_generate_rule
{
715 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
719 $cmd .= " -m iprange --src-range" if $rule->{nbsource
} && $rule->{nbsource
} > 1;
720 $cmd .= " -s $rule->{source}" if $rule->{source
};
721 $cmd .= " -m iprange --dst-range" if $rule->{nbdest
} && $rule->{nbdest
} > 1;
722 $cmd .= " -d $rule->{dest}" if $rule->{dest
};
723 $cmd .= " -p $rule->{proto}" if $rule->{proto
};
725 if (($rule->{nbdport
} && $rule->{nbdport
} > 1) ||
726 ($rule->{nbsport
} && $rule->{nbsport
} > 1)) {
727 $cmd .= " --match multiport"
730 if ($rule->{dport
}) {
731 if ($rule->{proto
} && $rule->{proto
} eq 'icmp') {
732 # Note: we use dport to store --icmp-type
733 die "unknown icmp-type\n" if !$icmp_type_names->{$rule->{dport
}};
734 $cmd .= " -m icmp --icmp-type $rule->{dport}";
736 if ($rule->{nbdport
} && $rule->{nbdport
} > 1) {
737 $cmd .= " --dports $rule->{dport}";
739 $cmd .= " --dport $rule->{dport}";
744 if ($rule->{sport
}) {
745 if ($rule->{nbsport
} && $rule->{nbsport
} > 1) {
746 $cmd .= " --sports $rule->{sport}";
748 $cmd .= " --sport $rule->{sport}";
752 $cmd .= " -m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
754 if (my $action = $rule->{action
}) {
755 $action = $actions->{$action} if defined($actions->{$action});
756 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
757 $cmd .= $goto ?
" -g $action" : " -j $action";
760 ruleset_addrule
($ruleset, $chain, $cmd) if $cmd;
763 sub ruleset_create_chain
{
764 my ($ruleset, $chain) = @_;
766 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
768 die "chain '$chain' already exists\n" if $ruleset->{$chain};
770 $ruleset->{$chain} = [];
773 sub ruleset_chain_exist
{
774 my ($ruleset, $chain) = @_;
776 return $ruleset->{$chain} ?
1 : undef;
779 sub ruleset_addrule
{
780 my ($ruleset, $chain, $rule) = @_;
782 die "no such chain '$chain'\n" if !$ruleset->{$chain};
784 push @{$ruleset->{$chain}}, "-A $chain $rule";
787 sub ruleset_insertrule
{
788 my ($ruleset, $chain, $rule) = @_;
790 die "no such chain '$chain'\n" if !$ruleset->{$chain};
792 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
795 sub generate_bridge_chains
{
796 my ($ruleset, $bridge) = @_;
798 if (!ruleset_chain_exist
($ruleset, "PVEFW-FORWARD")){
799 ruleset_create_chain
($ruleset, "PVEFW-FORWARD");
800 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
803 if (!ruleset_chain_exist
($ruleset, "$bridge-FW")) {
804 ruleset_create_chain
($ruleset, "$bridge-FW");
805 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-bridged -j $bridge-FW");
806 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-bridged -j $bridge-FW");
807 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o $bridge -j DROP"); # disable interbridge routing
808 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i $bridge -j DROP"); # disable interbridge routing
811 if (!ruleset_chain_exist
($ruleset, "$bridge-OUT")) {
812 ruleset_create_chain
($ruleset, "$bridge-OUT");
813 ruleset_addrule
($ruleset, "$bridge-FW", "-m physdev --physdev-is-bridged --physdev-is-in -j $bridge-OUT");
816 if (!ruleset_chain_exist
($ruleset, "$bridge-IN")) {
817 ruleset_create_chain
($ruleset, "$bridge-IN");
818 ruleset_addrule
($ruleset, "$bridge-FW", "-m physdev --physdev-is-bridged --physdev-is-out -j $bridge-IN");
819 ruleset_addrule
($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT");
820 # accept traffic to unmanaged bridge ports
821 ruleset_addrule
($ruleset, "$bridge-FW", "-m physdev --physdev-is-bridged --physdev-is-out -j ACCEPT ");
825 sub generate_tap_rules_direction
{
826 my ($ruleset, $group_rules, $iface, $netid, $macaddr, $vmfw_conf, $bridge, $direction) = @_;
828 my $rules = $vmfw_conf->{lc($direction)};
829 my $options = $vmfw_conf->{options
};
831 my $tapchain = "$iface-$direction";
833 ruleset_create_chain
($ruleset, $tapchain);
835 if (!(defined($options->{nosmurfs
}) && $options->{nosmurfs
} == 0)) {
836 ruleset_addrule
($ruleset, $tapchain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
839 if (!(defined($options->{dhcp
}) && $options->{dhcp
} == 0)) {
840 ruleset_addrule
($ruleset, $tapchain, "-p udp -m udp --dport 67:68 -j ACCEPT");
843 if ($options->{tcpflags
}) {
844 ruleset_addrule
($ruleset, $tapchain, "-p tcp -j PVEFW-tcpflags");
847 ruleset_addrule
($ruleset, $tapchain, "-m conntrack --ctstate INVALID -j DROP");
848 ruleset_addrule
($ruleset, $tapchain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
850 if ($direction eq 'OUT' && defined($macaddr) &&
851 !(defined($options->{macfilter
}) && $options->{macfilter
} == 0)) {
852 ruleset_addrule
($ruleset, $tapchain, "-m mac ! --mac-source $macaddr -j DROP");
856 foreach my $rule (@$rules) {
857 next if $rule->{iface
} && $rule->{iface
} ne $netid;
858 # we go to $bridge-IN if accept in out rules
859 if($rule->{action
} =~ m/^(GROUP-(\S+))$/){
860 $rule->{action
} .= "-$direction";
861 # generate empty group rule if don't exist
862 if(!ruleset_chain_exist
($ruleset, $rule->{action
})){
863 generate_group_rules
($ruleset, $group_rules, $2);
865 ruleset_generate_rule
($ruleset, $tapchain, $rule);
866 ruleset_addrule
($ruleset, $tapchain, "-m mark --mark 1 -j RETURN")
867 if $direction eq 'OUT';
869 if ($direction eq 'OUT') {
870 ruleset_generate_rule
($ruleset, $tapchain, $rule,
871 { ACCEPT
=> "PVEFW-SET-ACCEPT-MARK", REJECT
=> "PVEFW-reject" });
873 ruleset_generate_rule
($ruleset, $tapchain, $rule, { REJECT
=> "PVEFW-reject" });
882 if ($direction eq 'OUT') {
883 $policy = $options->{'policy-out'} || 'ACCEPT'; # allow everything by default
885 $policy = $options->{'policy-in'} || 'DROP'; # allow everything by default
888 if ($policy eq 'ACCEPT') {
889 if ($direction eq 'OUT') {
890 ruleset_addrule
($ruleset, $tapchain, "-g PVEFW-SET-ACCEPT-MARK");
892 ruleset_addrule
($ruleset, $tapchain, "-j ACCEPT");
894 } elsif ($policy eq 'DROP') {
895 ruleset_addrule
($ruleset, $tapchain, "-j PVEFW-Drop");
896 ruleset_addrule
($ruleset, $tapchain, "-j LOG --log-prefix \"$tapchain-dropped: \" --log-level 4");
897 ruleset_addrule
($ruleset, $tapchain, "-j DROP");
898 } elsif ($policy eq 'REJECT') {
899 ruleset_addrule
($ruleset, $tapchain, "-j PVEFW-Reject");
900 ruleset_addrule
($ruleset, $tapchain, "-j LOG --log-prefix \"$tapchain-reject: \" --log-level 4");
901 ruleset_addrule
($ruleset, $tapchain, "-g PVEFW-reject");
904 die "internal error: unknown policy '$policy'";
907 # plug the tap chain to bridge chain
908 my $physdevdirection = $direction eq 'IN' ?
"out" : "in";
909 my $rule = "-m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
910 ruleset_insertrule
($ruleset, "$bridge-$direction", $rule);
912 if ($direction eq 'OUT'){
913 # add tap->host rules
914 my $rule = "-m physdev --physdev-$physdevdirection $iface -j $tapchain";
915 ruleset_addrule
($ruleset, "PVEFW-INPUT", $rule);
920 my ($ruleset, $rules, $group_rules) = @_;
922 # fixme: allow security groups
924 # host inbound firewall
925 my $chain = "PVEFW-HOST-IN";
926 ruleset_create_chain
($ruleset, $chain);
928 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
929 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
930 ruleset_addrule
($ruleset, $chain, "-i lo -j ACCEPT");
931 ruleset_addrule
($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
932 ruleset_addrule
($ruleset, $chain, "-p udp -m conntrack --ctstate NEW -m multiport --dports 5404,5405 -j ACCEPT");
933 ruleset_addrule
($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
936 foreach my $rule (@{$rules->{in}}) {
937 # we use RETURN because we need to check also tap rules
938 ruleset_generate_rule
($ruleset, $chain, $rule, { ACCEPT
=> 'RETURN', REJECT
=> "PVEFW-reject" });
942 ruleset_addrule
($ruleset, $chain, "-j LOG --log-prefix \"kvmhost-IN dropped: \" --log-level 4");
943 ruleset_addrule
($ruleset, $chain, "-j DROP");
945 # host outbound firewall
946 $chain = "PVEFW-HOST-OUT";
947 ruleset_create_chain
($ruleset, $chain);
949 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
950 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
951 ruleset_addrule
($ruleset, $chain, "-o lo -j ACCEPT");
952 ruleset_addrule
($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
953 ruleset_addrule
($ruleset, $chain, "-p udp -m conntrack --ctstate NEW -m multiport --dports 5404,5405 -j ACCEPT");
954 ruleset_addrule
($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
957 foreach my $rule (@{$rules->{out
}}) {
958 # we use RETURN because we need to check also tap rules
959 ruleset_generate_rule
($ruleset, $chain, $rule, { ACCEPT
=> 'RETURN', REJECT
=> "PVEFW-reject" });
963 ruleset_addrule
($ruleset, $chain, "-j LOG --log-prefix \"kvmhost-OUT dropped: \" --log-level 4");
964 ruleset_addrule
($ruleset, $chain, "-j DROP");
966 ruleset_addrule
($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
967 ruleset_addrule
($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
970 sub generate_group_rules
{
971 my ($ruleset, $group_rules, $group) = @_;
973 my $rules = $group_rules->{$group};
975 die "no such security group '$group'\n" if !$rules;
977 my $chain = "GROUP-${group}-IN";
979 ruleset_create_chain
($ruleset, $chain);
982 foreach my $rule (@{$rules->{in}}) {
983 ruleset_generate_rule
($ruleset, $chain, $rule, { REJECT
=> "PVEFW-reject" });
987 $chain = "GROUP-${group}-OUT";
989 ruleset_create_chain
($ruleset, $chain);
990 ruleset_addrule
($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
993 foreach my $rule (@{$rules->{out
}}) {
994 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
995 # check also other tap rules later
996 ruleset_generate_rule
($ruleset, $chain, $rule,
997 { ACCEPT
=> 'PVEFW-SET-ACCEPT-MARK', REJECT
=> "PVEFW-reject" });
1003 my $valid_netdev_names = {};
1004 for (my $i = 0; $i < $MAX_NETS; $i++) {
1005 $valid_netdev_names->{"net$i"} = 1;
1009 my ($line, $need_iface, $allow_groups) = @_;
1011 my $macros = get_firewall_macros
();
1012 my $protocols = get_etc_protocols
();
1014 my ($action, $iface, $source, $dest, $proto, $dport, $sport);
1018 my @data = split(/\s+/, $line);
1019 my $expected_elements = $need_iface ?
7 : 6;
1021 die "wrong number of rule elements\n" if scalar(@data) > $expected_elements;
1024 ($action, $iface, $source, $dest, $proto, $dport, $sport) = @data
1026 ($action, $source, $dest, $proto, $dport, $sport) = @data;
1029 die "incomplete rule\n" if !$action;
1034 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1036 } elsif ($allow_groups && $action =~ m/^GROUP-(:?\S+)$/) {
1038 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
1039 ($macro_name, $action) = ($1, $2);
1040 my $lc_macro_name = lc($macro_name);
1041 my $preferred_name = $pve_fw_preferred_macro_names->{$lc_macro_name};
1042 $macro_name = $preferred_name if $preferred_name;
1043 $macro = $macros->{$lc_macro_name};
1044 die "unknown macro '$macro_name'\n" if !$macro;
1046 die "unknown action '$action'\n";
1050 $iface = undef if $iface && $iface eq '-';
1051 die "unknown interface '$iface'\n"
1052 if defined($iface) && !$valid_netdev_names->{$iface};
1055 $proto = undef if $proto && $proto eq '-';
1056 die "unknown protokol '$proto'\n" if $proto &&
1057 !(defined($protocols->{byname
}->{$proto}) ||
1058 defined($protocols->{byid
}->{$proto}));
1060 $source = undef if $source && $source eq '-';
1061 $dest = undef if $dest && $dest eq '-';
1063 $dport = undef if $dport && $dport eq '-';
1064 $sport = undef if $sport && $sport eq '-';
1066 my $nbsource = undef;
1069 $nbsource = parse_address_list
($source) if $source;
1070 $nbdest = parse_address_list
($dest) if $dest;
1079 nbsource
=> $nbsource,
1087 foreach my $templ (@$macro) {
1089 my $param_used = {};
1090 foreach my $k (keys %$templ) {
1091 my $v = $templ->{$k};
1092 if ($v eq 'PARAM') {
1094 $param_used->{$k} = 1;
1095 } elsif ($v eq 'DEST') {
1096 $v = $param->{dest
};
1097 $param_used->{dest
} = 1;
1098 } elsif ($v eq 'SOURCE') {
1099 $v = $param->{source
};
1100 $param_used->{source
} = 1;
1103 die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v);
1106 foreach my $k (keys %$param) {
1107 next if !defined($param->{$k});
1108 next if $param_used->{$k};
1109 if (defined($rule->{$k})) {
1110 die "parameter '$k' already define in macro (value = '$rule->{$k}')\n"
1111 if $rule->{$k} ne $param->{$k};
1113 $rule->{$k} = $param->{$k};
1116 push @$rules, $rule;
1119 push @$rules, $param;
1122 foreach my $rule (@$rules) {
1123 $rule->{nbdport
} = parse_port_name_number_or_range
($rule->{dport
})
1124 if defined($rule->{dport
});
1125 $rule->{nbsport
} = parse_port_name_number_or_range
($rule->{sport
})
1126 if defined($rule->{sport
});
1132 sub parse_fw_option
{
1137 if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
1140 } elsif ($line =~ m/^(policy-(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1145 die "can't parse option '$line'\n"
1148 return ($opt, $value);
1151 sub parse_vm_fw_rules
{
1152 my ($filename, $fh) = @_;
1154 my $res = { in => [], out
=> [], options
=> {}};
1158 while (defined(my $line = <$fh>)) {
1159 next if $line =~ m/^#/;
1160 next if $line =~ m/^\s*$/;
1162 my $linenr = $fh->input_line_number();
1163 my $prefix = "$filename (line $linenr)";
1165 if ($line =~ m/^\[(\S+)\]\s*$/i) {
1167 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
1171 warn "$prefix: skip line - no section";
1175 next if !$res->{$section}; # skip undefined section
1177 if ($section eq 'options') {
1179 my ($opt, $value) = parse_fw_option
($line);
1180 $res->{options
}->{$opt} = $value;
1182 warn "$prefix: $@" if $@;
1187 eval { $rules = parse_fw_rule
($line, 1, 1); };
1189 warn "$prefix: $err";
1193 push @{$res->{$section}}, @$rules;
1199 sub parse_host_fw_rules
{
1200 my ($filename, $fh) = @_;
1202 my $res = { in => [], out
=> [] };
1206 while (defined(my $line = <$fh>)) {
1207 next if $line =~ m/^#/;
1208 next if $line =~ m/^\s*$/;
1210 my $linenr = $fh->input_line_number();
1211 my $prefix = "$filename (line $linenr)";
1213 if ($line =~ m/^\[(in|out)\]\s*$/i) {
1218 warn "$prefix: skip line - no section";
1223 eval { $rules = parse_fw_rule
($line, 1, 1); };
1225 warn "$prefix: $err";
1229 push @{$res->{$section}}, @$rules;
1235 sub parse_group_fw_rules
{
1236 my ($filename, $fh) = @_;
1241 my $res = { in => [], out
=> [] };
1243 while (defined(my $line = <$fh>)) {
1244 next if $line =~ m/^#/;
1245 next if $line =~ m/^\s*$/;
1247 my $linenr = $fh->input_line_number();
1248 my $prefix = "$filename (line $linenr)";
1250 if ($line =~ m/^\[(in|out):(\S+)\]\s*$/i) {
1255 if (!$section || !$group) {
1256 warn "$prefix: skip line - no section";
1261 eval { $rules = parse_fw_rule
($line, 0, 0); };
1263 warn "$prefix: $err";
1267 push @{$res->{$group}->{$section}}, @$rules;
1274 my ($code, @param) = @_;
1278 my $res = lock_file
($pve_fw_lock_filename, $timeout, $code, @param);
1285 sub read_local_vm_config
{
1291 my $list = PVE
::QemuServer
::config_list
();
1293 foreach my $vmid (keys %$list) {
1294 my $cfspath = PVE
::QemuServer
::cfs_config_path
($vmid);
1295 if (my $conf = PVE
::Cluster
::cfs_read_file
($cfspath)) {
1296 $qemu->{$vmid} = $conf;
1300 my $vmdata = { openvz
=> $openvz, qemu
=> $qemu };
1305 sub read_vm_firewall_rules
{
1308 foreach my $vmid (keys %{$vmdata->{qemu
}}, keys %{$vmdata->{openvz
}}) {
1309 my $filename = "/etc/pve/firewall/$vmid.fw";
1310 my $fh = IO
::File-
>new($filename, O_RDONLY
);
1313 $rules->{$vmid} = parse_vm_fw_rules
($filename, $fh);
1319 sub generate_std_chains
{
1322 foreach my $chain (keys %$pve_std_chains) {
1323 ruleset_create_chain
($ruleset, $chain);
1324 foreach my $rule (@{$pve_std_chains->{$chain}}) {
1326 ruleset_generate_rule
($ruleset, $chain, $rule);
1328 ruleset_addrule
($ruleset, $chain, $rule);
1335 my $vmdata = read_local_vm_config
();
1336 my $rules = read_vm_firewall_rules
($vmdata);
1338 my $group_rules = {};
1339 my $filename = "/etc/pve/firewall/groups.fw";
1340 if (my $fh = IO
::File-
>new($filename, O_RDONLY
)) {
1341 $group_rules = parse_group_fw_rules
($filename, $fh);
1344 #print Dumper($rules);
1348 ruleset_create_chain
($ruleset, "PVEFW-INPUT");
1349 ruleset_create_chain
($ruleset, "PVEFW-OUTPUT");
1350 ruleset_create_chain
($ruleset, "PVEFW-FORWARD");
1352 generate_std_chains
($ruleset);
1354 my $enable_hostfw = 0;
1355 $filename = "/etc/pve/local/host.fw";
1356 if (my $fh = IO
::File-
>new($filename, O_RDONLY
)) {
1357 my $host_rules = parse_host_fw_rules
($filename, $fh);
1361 enablehostfw
($ruleset, $host_rules, $group_rules);
1364 # generate firewall rules for QEMU VMs
1365 foreach my $vmid (keys %{$vmdata->{qemu
}}) {
1366 my $conf = $vmdata->{qemu
}->{$vmid};
1367 my $vmfw_conf = $rules->{$vmid};
1368 next if !$vmfw_conf;
1369 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
1371 foreach my $netid (keys %$conf) {
1372 next if $netid !~ m/^net(\d+)$/;
1373 my $net = PVE
::QemuServer
::parse_net
($conf->{$netid});
1375 my $iface = "tap${vmid}i$1";
1377 my $bridge = $net->{bridge
};
1378 next if !$bridge; # fixme: ?
1380 $bridge .= "v$net->{tag}" if $net->{tag
};
1383 generate_bridge_chains
($ruleset, $bridge);
1385 my $macaddr = $net->{macaddr
};
1386 generate_tap_rules_direction
($ruleset, $group_rules, $iface, $netid, $macaddr, $vmfw_conf, $bridge, 'IN');
1387 generate_tap_rules_direction
($ruleset, $group_rules, $iface, $netid, $macaddr, $vmfw_conf, $bridge, 'OUT');
1391 if ($enable_hostfw) {
1392 # allow traffic from lo (ourself)
1393 ruleset_addrule
($ruleset, "PVEFW-INPUT", "-i lo -j ACCEPT");
1399 sub get_ruleset_status
{
1400 my ($ruleset, $verbose) = @_;
1402 my $active_chains = iptables_get_chains
();
1404 my $statushash = {};
1406 foreach my $chain (sort keys %$ruleset) {
1407 my $digest = Digest
::SHA-
>new('sha1');
1408 foreach my $cmd (@{$ruleset->{$chain}}) {
1409 $digest->add("$cmd\n");
1411 my $sig = $digest->b64digest;
1412 $statushash->{$chain}->{sig
} = $sig;
1414 my $oldsig = $active_chains->{$chain};
1415 if (!defined($oldsig)) {
1416 $statushash->{$chain}->{action
} = 'create';
1418 if ($oldsig eq $sig) {
1419 $statushash->{$chain}->{action
} = 'exists';
1421 $statushash->{$chain}->{action
} = 'update';
1424 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
1425 foreach my $cmd (@{$ruleset->{$chain}}) {
1426 print "\t$cmd\n" if $verbose;
1430 foreach my $chain (sort keys %$active_chains) {
1431 if (!defined($ruleset->{$chain})) {
1432 my $sig = $active_chains->{$chain};
1433 $statushash->{$chain}->{action
} = 'delete';
1434 $statushash->{$chain}->{sig
} = $sig;
1435 print "delete $chain ($sig)\n" if $verbose;
1445 get_ruleset_status
($ruleset, 1);
1448 sub print_sig_rule
{
1449 my ($chain, $sig) = @_;
1451 # We just use this to store a SHA1 checksum used to detect changes
1452 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
1456 my ($ruleset, $verbose) = @_;
1458 enable_bridge_firewall();
1460 my $cmdlist = "*filter
\n"; # we pass this to iptables-restore;
1462 my $statushash = get_ruleset_status($ruleset, $verbose);
1464 # create missing chains first
1465 foreach my $chain (sort keys %$ruleset) {
1466 my $stat = $statushash->{$chain};
1467 die "internal error
" if !$stat;
1468 next if $stat->{action} ne 'create';
1470 $cmdlist .= ":$chain - [0:0]\n";
1473 my $rule = "INPUT
-j PVEFW-INPUT
";
1474 if (!PVE::Firewall::iptables_rule_exist($rule)) {
1475 $cmdlist .= "-A
$rule\n";
1477 $rule = "OUTPUT
-j PVEFW-OUTPUT
";
1478 if (!PVE::Firewall::iptables_rule_exist($rule)) {
1479 $cmdlist .= "-A
$rule\n";
1482 $rule = "FORWARD
-j PVEFW-FORWARD
";
1483 if (!PVE::Firewall::iptables_rule_exist($rule)) {
1484 $cmdlist .= "-A
$rule\n";
1487 foreach my $chain (sort keys %$ruleset) {
1488 my $stat = $statushash->{$chain};
1489 die "internal error
" if !$stat;
1491 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
1492 $cmdlist .= "-F
$chain\n";
1493 foreach my $cmd (@{$ruleset->{$chain}}) {
1494 $cmdlist .= "$cmd\n";
1496 $cmdlist .= print_sig_rule($chain, $stat->{sig});
1497 } elsif ($stat->{action} eq 'delete') {
1498 die "internal error
"; # this should not happen
1499 } elsif ($stat->{action} eq 'exists') {
1502 die "internal error
- unknown status
'$stat->{action}'";
1506 foreach my $chain (keys %$statushash) {
1507 next if $statushash->{$chain}->{action} ne 'delete';
1508 $cmdlist .= "-F
$chain\n";
1510 foreach my $chain (keys %$statushash) {
1511 next if $statushash->{$chain}->{action} ne 'delete';
1512 next if $chain eq 'PVEFW-INPUT';
1513 next if $chain eq 'PVEFW-OUTPUT';
1514 next if $chain eq 'PVEFW-FORWARD';
1515 $cmdlist .= "-X
$chain\n";
1518 $cmdlist .= "COMMIT
\n";
1520 print $cmdlist if $verbose;
1522 iptables_restore_cmdlist($cmdlist);
1524 # test: re-read status and check if everything is up to date
1525 $statushash = get_ruleset_status($ruleset);
1528 foreach my $chain (sort keys %$ruleset) {
1529 my $stat = $statushash->{$chain};
1530 if ($stat->{action} ne 'exists') {
1531 warn "unable to update chain
'$chain'\n";
1536 die "unable to apply firewall changes
\n" if $errors;