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.
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",
436 # iptables -p icmp -h
437 my $icmp_type_names = {
440 'destination-unreachable' => 1,
441 'network-unreachable' => 1,
442 'host-unreachable' => 1,
443 'protocol-unreachable' => 1,
444 'port-unreachable' => 1,
445 'fragmentation-needed' => 1,
446 'source-route-failed' => 1,
447 'network-unknown' => 1,
449 'network-prohibited' => 1,
450 'host-prohibited' => 1,
451 'TOS-network-unreachable' => 1,
452 'TOS-host-unreachable' => 1,
453 'communication-prohibited' => 1,
454 'host-precedence-violation' => 1,
455 'precedence-cutoff' => 1,
456 'source-quench' => 1,
458 'network-redirect' => 1,
459 'host-redirect' => 1,
460 'TOS-network-redirect' => 1,
461 'TOS-host-redirect' => 1,
463 'router-advertisement' => 1,
464 'router-solicitation' => 1,
465 'time-exceeded' => 1,
466 'ttl-zero-during-transit' => 1,
467 'ttl-zero-during-reassembly' => 1,
468 'parameter-problem' => 1,
469 'ip-header-bad' => 1,
470 'required-option-missing' => 1,
471 'timestamp-request' => 1,
472 'timestamp-reply' => 1,
473 'address-mask-request' => 1,
474 'address-mask-reply' => 1,
477 sub get_firewall_macros
{
479 return $pve_fw_parsed_macros if $pve_fw_parsed_macros;
481 $pve_fw_parsed_macros = {};
483 foreach my $k (keys %$pve_fw_macros) {
486 my $macro = $pve_fw_macros->{$k};
487 $pve_fw_preferred_macro_names->{$name} = $k;
488 $pve_fw_parsed_macros->{$name} = $macro;
491 return $pve_fw_parsed_macros;
496 sub get_etc_services
{
498 return $etc_services if $etc_services;
500 my $filename = "/etc/services";
502 my $fh = IO
::File-
>new($filename, O_RDONLY
);
504 warn "unable to read '$filename' - $!\n";
510 while (my $line = <$fh>) {
512 next if $line =~m/^#/;
513 next if ($line =~m/^\s*$/);
515 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
516 $services->{byid
}->{$2}->{name
} = $1;
517 $services->{byid
}->{$2}->{port
} = $2;
518 $services->{byid
}->{$2}->{$3} = 1;
519 $services->{byname
}->{$1} = $services->{byid
}->{$2};
525 $etc_services = $services;
528 return $etc_services;
533 sub get_etc_protocols
{
534 return $etc_protocols if $etc_protocols;
536 my $filename = "/etc/protocols";
538 my $fh = IO
::File-
>new($filename, O_RDONLY
);
540 warn "unable to read '$filename' - $!\n";
546 while (my $line = <$fh>) {
548 next if $line =~m/^#/;
549 next if ($line =~m/^\s*$/);
551 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
552 $protocols->{byid
}->{$2}->{name
} = $1;
553 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
559 $etc_protocols = $protocols;
561 return $etc_protocols;
564 sub parse_address_list
{
568 foreach my $aor (split(/,/, $str)) {
569 if (!Net
::IP-
>new($aor)) {
570 my $err = Net
::IP
::Error
();
571 die "invalid IP address: $err\n";
579 sub parse_port_name_number_or_range
{
582 my $services = PVE
::Firewall
::get_etc_services
();
584 foreach my $item (split(/,/, $str)) {
588 foreach my $pon (split(':', $item, 2)) {
589 $pon = $services->{byname
}->{$pon}->{port
} if $services->{byname
}->{$pon}->{port
};
590 if ($pon =~ m/^\d+$/){
591 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65535;
592 die "port '$pon' must be bigger than port '$oldpon' \n" if $oldpon && ($pon < $oldpon);
595 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname
}->{$pon};
603 my $bridge_firewall_enabled = 0;
605 sub enable_bridge_firewall
{
607 return if $bridge_firewall_enabled; # only once
609 system("echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables");
610 system("echo 1 > /proc/sys/net/bridge/bridge-nf-call-ip6tables");
612 $bridge_firewall_enabled = 1;
615 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
620 run_command
("/sbin/iptables $cmd", outfunc
=> sub {}, errfunc
=> sub {});
623 sub iptables_restore_cmdlist
{
626 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist);
629 sub iptables_get_chains
{
633 # check what chains we want to track
634 my $is_pvefw_chain = sub {
637 return 1 if $name =~ m/^PVEFW-\S+$/;
639 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
640 return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT)$/;
641 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
651 return if $line =~ m/^#/;
652 return if $line =~ m/^\s*$/;
654 if ($line =~ m/^\*(\S+)$/) {
659 return if $table ne 'filter';
661 if ($line =~ m/^:(\S+)\s/) {
663 return if !&$is_pvefw_chain($chain);
664 $res->{$chain} = "unknown";
665 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
666 my ($chain, $sig) = ($1, $2);
667 return if !&$is_pvefw_chain($chain);
668 $res->{$chain} = $sig;
670 # simply ignore the rest
675 run_command
("/sbin/iptables-save", outfunc
=> $parser);
680 sub iptables_chain_exist
{
684 iptables
("-n --list $chain");
691 sub iptables_rule_exist
{
695 iptables
("-C $rule");
702 sub ruleset_generate_rule
{
703 my ($ruleset, $chain, $rule, $goto) = @_;
707 $cmd .= " -m iprange --src-range" if $rule->{nbsource
} && $rule->{nbsource
} > 1;
708 $cmd .= " -s $rule->{source}" if $rule->{source
};
709 $cmd .= " -m iprange --dst-range" if $rule->{nbdest
} && $rule->{nbdest
} > 1;
710 $cmd .= " -d $rule->{dest}" if $rule->{dest
};
711 $cmd .= " -p $rule->{proto}" if $rule->{proto
};
713 if (($rule->{nbdport
} && $rule->{nbdport
} > 1) ||
714 ($rule->{nbsport
} && $rule->{nbsport
} > 1)) {
715 $cmd .= " --match multiport"
718 if ($rule->{dport
}) {
719 if ($rule->{proto
} && $rule->{proto
} eq 'icmp') {
720 # Note: we use dport to store --icmp-type
721 die "unknown icmp-type\n" if !$icmp_type_names->{$rule->{dport
}};
722 $cmd .= " -m icmp --icmp-type $rule->{dport}";
724 if ($rule->{nbdport
} && $rule->{nbdport
} > 1) {
725 $cmd .= " --dports $rule->{dport}";
727 $cmd .= " --dport $rule->{dport}";
732 if ($rule->{sport
}) {
733 if ($rule->{nbsport
} && $rule->{nbsport
} > 1) {
734 $cmd .= " --sports $rule->{sport}";
736 $cmd .= " --sport $rule->{sport}";
740 $cmd .= " -m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
742 if (my $action = $rule->{action
}) {
743 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
744 $cmd .= $goto ?
" -g $action" : " -j $action";
747 ruleset_addrule
($ruleset, $chain, $cmd) if $cmd;
750 sub ruleset_create_chain
{
751 my ($ruleset, $chain) = @_;
753 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
755 die "chain '$chain' already exists\n" if $ruleset->{$chain};
757 $ruleset->{$chain} = [];
760 sub ruleset_chain_exist
{
761 my ($ruleset, $chain) = @_;
763 return $ruleset->{$chain} ?
1 : undef;
766 sub ruleset_addrule
{
767 my ($ruleset, $chain, $rule) = @_;
769 die "no such chain '$chain'\n" if !$ruleset->{$chain};
771 push @{$ruleset->{$chain}}, "-A $chain $rule";
774 sub ruleset_insertrule
{
775 my ($ruleset, $chain, $rule) = @_;
777 die "no such chain '$chain'\n" if !$ruleset->{$chain};
779 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
782 sub generate_bridge_chains
{
783 my ($ruleset, $bridge) = @_;
785 if (!ruleset_chain_exist
($ruleset, "PVEFW-FORWARD")){
786 ruleset_create_chain
($ruleset, "PVEFW-FORWARD");
787 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
790 if (!ruleset_chain_exist
($ruleset, "$bridge-FW")) {
791 ruleset_create_chain
($ruleset, "$bridge-FW");
792 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-bridged -j $bridge-FW");
793 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-bridged -j $bridge-FW");
794 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o $bridge -j DROP"); # disable interbridge routing
795 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i $bridge -j DROP"); # disable interbridge routing
798 if (!ruleset_chain_exist
($ruleset, "$bridge-OUT")) {
799 ruleset_create_chain
($ruleset, "$bridge-OUT");
800 ruleset_addrule
($ruleset, "$bridge-FW", "-m physdev --physdev-is-bridged --physdev-is-in -j $bridge-OUT");
803 if (!ruleset_chain_exist
($ruleset, "$bridge-IN")) {
804 ruleset_create_chain
($ruleset, "$bridge-IN");
805 ruleset_addrule
($ruleset, "$bridge-FW", "-m physdev --physdev-is-bridged --physdev-is-out -j $bridge-IN");
806 ruleset_addrule
($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT");
810 sub generate_tap_rules_direction
{
811 my ($ruleset, $group_rules, $iface, $netid, $macaddr, $vmfw_conf, $bridge, $direction) = @_;
813 my $rules = $vmfw_conf->{lc($direction)};
814 my $options = $vmfw_conf->{options
};
816 my $tapchain = "$iface-$direction";
818 ruleset_create_chain
($ruleset, $tapchain);
820 ruleset_addrule
($ruleset, $tapchain, "-m conntrack --ctstate INVALID -j DROP");
821 ruleset_addrule
($ruleset, $tapchain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
823 if ($direction eq 'OUT' && defined($macaddr) &&
824 !(defined($options->{macfilter
}) && $options->{macfilter
} == 0)) {
825 ruleset_addrule
($ruleset, $tapchain, "-m mac ! --mac-source $macaddr -j DROP");
828 if ($options->{tcpflags
}) {
829 ruleset_addrule
($ruleset, $tapchain, "-p tcp -j PVEFW-tcpflags");
833 foreach my $rule (@$rules) {
834 next if $rule->{iface
} && $rule->{iface
} ne $netid;
835 # we go to $bridge-IN if accept in out rules
836 if($rule->{action
} =~ m/^(GROUP-(\S+))$/){
837 $rule->{action
} .= "-$direction";
838 # generate empty group rule if don't exist
839 if(!ruleset_chain_exist
($ruleset, $rule->{action
})){
840 generate_group_rules
($ruleset, $group_rules, $2);
842 ruleset_generate_rule
($ruleset, $tapchain, $rule);
843 ruleset_addrule
($ruleset, $tapchain, "-m mark --mark 1 -j RETURN")
844 if $direction eq 'OUT';
846 $rule->{action
} = "PVEFW-SET-ACCEPT-MARK" if $rule->{action
} eq 'ACCEPT' && $direction eq 'OUT';
847 ruleset_generate_rule
($ruleset, $tapchain, $rule);
855 if ($direction eq 'OUT') {
856 $policy = $options->{'policy-out'} || 'ACCEPT'; # allow everything by default
858 $policy = $options->{'policy-in'} || 'DROP'; # allow everything by default
861 if ($policy eq 'ACCEPT') {
862 if ($direction eq 'OUT') {
863 ruleset_addrule
($ruleset, $tapchain, "-g PVEFW-SET-ACCEPT-MARK");
865 ruleset_addrule
($ruleset, $tapchain, "-j ACCEPT");
867 } elsif ($policy eq 'DROP') {
868 ruleset_addrule
($ruleset, $tapchain, "-j PVEFW-Drop");
869 ruleset_addrule
($ruleset, $tapchain, "-j LOG --log-prefix \"$tapchain-dropped: \" --log-level 4");
870 ruleset_addrule
($ruleset, $tapchain, "-j DROP");
871 } elsif ($policy eq 'REJECT') {
872 ruleset_addrule
($ruleset, $tapchain, "-j PVEFW-Reject");
873 ruleset_addrule
($ruleset, $tapchain, "-j LOG --log-prefix \"$tapchain-reject: \" --log-level 4");
874 ruleset_addrule
($ruleset, $tapchain, "-g PVEFW-reject");
877 die "internal error: unknown policy '$policy'";
880 # plug the tap chain to bridge chain
881 my $physdevdirection = $direction eq 'IN' ?
"out" : "in";
882 my $rule = "-m physdev --physdev-$physdevdirection $iface --physdev-is-bridged -j $tapchain";
883 ruleset_insertrule
($ruleset, "$bridge-$direction", $rule);
885 if ($direction eq 'OUT'){
886 # add tap->host rules
887 my $rule = "-m physdev --physdev-$physdevdirection $iface -j $tapchain";
888 ruleset_addrule
($ruleset, "PVEFW-INPUT", $rule);
893 my ($ruleset, $rules, $group_rules) = @_;
895 # fixme: allow security groups
897 # host inbound firewall
898 my $chain = "PVEFW-HOST-IN";
899 ruleset_create_chain
($ruleset, $chain);
901 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
902 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
903 ruleset_addrule
($ruleset, $chain, "-i lo -j ACCEPT");
904 ruleset_addrule
($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
905 ruleset_addrule
($ruleset, $chain, "-p udp -m conntrack --ctstate NEW -m multiport --dports 5404,5405 -j ACCEPT");
906 ruleset_addrule
($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
909 foreach my $rule (@{$rules->{in}}) {
910 # we use RETURN because we need to check also tap rules
911 $rule->{action
} = 'RETURN' if $rule->{action
} eq 'ACCEPT';
912 ruleset_generate_rule
($ruleset, $chain, $rule);
916 ruleset_addrule
($ruleset, $chain, "-j LOG --log-prefix \"kvmhost-IN dropped: \" --log-level 4");
917 ruleset_addrule
($ruleset, $chain, "-j DROP");
919 # host outbound firewall
920 $chain = "PVEFW-HOST-OUT";
921 ruleset_create_chain
($ruleset, $chain);
923 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
924 ruleset_addrule
($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
925 ruleset_addrule
($ruleset, $chain, "-o lo -j ACCEPT");
926 ruleset_addrule
($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT");
927 ruleset_addrule
($ruleset, $chain, "-p udp -m conntrack --ctstate NEW -m multiport --dports 5404,5405 -j ACCEPT");
928 ruleset_addrule
($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync
931 foreach my $rule (@{$rules->{out
}}) {
932 # we use RETURN because we need to check also tap rules
933 $rule->{action
} = 'RETURN' if $rule->{action
} eq 'ACCEPT';
934 ruleset_generate_rule
($ruleset, $chain, $rule);
938 ruleset_addrule
($ruleset, $chain, "-j LOG --log-prefix \"kvmhost-OUT dropped: \" --log-level 4");
939 ruleset_addrule
($ruleset, $chain, "-j DROP");
941 ruleset_addrule
($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
942 ruleset_addrule
($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
945 sub generate_group_rules
{
946 my ($ruleset, $group_rules, $group) = @_;
948 my $rules = $group_rules->{$group};
950 die "no such security group '$group'\n" if !$rules;
952 my $chain = "GROUP-${group}-IN";
954 ruleset_create_chain
($ruleset, $chain);
957 foreach my $rule (@{$rules->{in}}) {
958 ruleset_generate_rule
($ruleset, $chain, $rule);
962 $chain = "GROUP-${group}-OUT";
964 ruleset_create_chain
($ruleset, $chain);
965 ruleset_addrule
($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
968 foreach my $rule (@{$rules->{out
}}) {
969 # we go the PVEFW-SET-ACCEPT-MARK Instead of ACCEPT) because we need to
970 # check also other tap rules (and group rules can be set on any bridge,
971 # so we can't go to VMBRXX-IN)
972 $rule->{action
} = 'PVEFW-SET-ACCEPT-MARK' if $rule->{action
} eq 'ACCEPT';
973 ruleset_generate_rule
($ruleset, $chain, $rule);
979 my $valid_netdev_names = {};
980 for (my $i = 0; $i < $MAX_NETS; $i++) {
981 $valid_netdev_names->{"net$i"} = 1;
985 my ($line, $need_iface, $allow_groups) = @_;
987 my $macros = get_firewall_macros
();
988 my $protocols = get_etc_protocols
();
990 my ($action, $iface, $source, $dest, $proto, $dport, $sport);
994 my @data = split(/\s+/, $line);
995 my $expected_elements = $need_iface ?
7 : 6;
997 die "wrong number of rule elements\n" if scalar(@data) > $expected_elements;
1000 ($action, $iface, $source, $dest, $proto, $dport, $sport) = @data
1002 ($action, $source, $dest, $proto, $dport, $sport) = @data;
1005 die "incomplete rule\n" if !$action;
1010 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1012 } elsif ($allow_groups && $action =~ m/^GROUP-(:?\S+)$/) {
1014 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
1015 ($macro_name, $action) = ($1, $2);
1016 my $lc_macro_name = lc($macro_name);
1017 my $preferred_name = $pve_fw_preferred_macro_names->{$lc_macro_name};
1018 $macro_name = $preferred_name if $preferred_name;
1019 $macro = $macros->{$lc_macro_name};
1020 die "unknown macro '$macro_name'\n" if !$macro;
1022 die "unknown action '$action'\n";
1026 $iface = undef if $iface && $iface eq '-';
1027 die "unknown interface '$iface'\n"
1028 if defined($iface) && !$valid_netdev_names->{$iface};
1031 $proto = undef if $proto && $proto eq '-';
1032 die "unknown protokol '$proto'\n" if $proto &&
1033 !(defined($protocols->{byname
}->{$proto}) ||
1034 defined($protocols->{byid
}->{$proto}));
1036 $source = undef if $source && $source eq '-';
1037 $dest = undef if $dest && $dest eq '-';
1039 $dport = undef if $dport && $dport eq '-';
1040 $sport = undef if $sport && $sport eq '-';
1042 my $nbsource = undef;
1045 $nbsource = parse_address_list
($source) if $source;
1046 $nbdest = parse_address_list
($dest) if $dest;
1055 nbsource
=> $nbsource,
1063 foreach my $templ (@$macro) {
1065 foreach my $k (keys %$templ) {
1066 my $v = $templ->{$k};
1067 if ($v eq 'PARAM') {
1069 } elsif ($v eq 'DEST') {
1070 $v = $param->{dest
};
1071 } elsif ($v eq 'SOURCE') {
1072 $v = $param->{source
};
1075 die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v);
1078 push @$rules, $rule;
1081 push @$rules, $param;
1084 foreach my $rule (@$rules) {
1085 $rule->{nbdport
} = parse_port_name_number_or_range
($rule->{dport
})
1086 if defined($rule->{dport
});
1087 $rule->{nbsport
} = parse_port_name_number_or_range
($rule->{sport
})
1088 if defined($rule->{sport
});
1094 sub parse_fw_option
{
1099 if ($line =~ m/^(enable|macfilter|tcpflags):\s*(0|1)\s*$/i) {
1102 } elsif ($line =~ m/^(policy-(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1107 die "can't parse option '$line'\n"
1110 return ($opt, $value);
1113 sub parse_vm_fw_rules
{
1114 my ($filename, $fh) = @_;
1116 my $res = { in => [], out
=> [], options
=> {}};
1120 while (defined(my $line = <$fh>)) {
1121 next if $line =~ m/^#/;
1122 next if $line =~ m/^\s*$/;
1124 my $linenr = $fh->input_line_number();
1125 my $prefix = "$filename (line $linenr)";
1127 if ($line =~ m/^\[(\S+)\]\s*$/i) {
1129 warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section};
1133 warn "$prefix: skip line - no section";
1137 next if !$res->{$section}; # skip undefined section
1139 if ($section eq 'options') {
1141 my ($opt, $value) = parse_fw_option
($line);
1142 $res->{options
}->{$opt} = $value;
1144 warn "$prefix: $@" if $@;
1149 eval { $rules = parse_fw_rule
($line, 1, 1); };
1151 warn "$prefix: $err";
1155 push @{$res->{$section}}, @$rules;
1161 sub parse_host_fw_rules
{
1162 my ($filename, $fh) = @_;
1164 my $res = { in => [], out
=> [] };
1168 while (defined(my $line = <$fh>)) {
1169 next if $line =~ m/^#/;
1170 next if $line =~ m/^\s*$/;
1172 my $linenr = $fh->input_line_number();
1173 my $prefix = "$filename (line $linenr)";
1175 if ($line =~ m/^\[(in|out)\]\s*$/i) {
1180 warn "$prefix: skip line - no section";
1185 eval { $rules = parse_fw_rule
($line, 1, 1); };
1187 warn "$prefix: $err";
1191 push @{$res->{$section}}, @$rules;
1197 sub parse_group_fw_rules
{
1198 my ($filename, $fh) = @_;
1203 my $res = { in => [], out
=> [] };
1205 while (defined(my $line = <$fh>)) {
1206 next if $line =~ m/^#/;
1207 next if $line =~ m/^\s*$/;
1209 my $linenr = $fh->input_line_number();
1210 my $prefix = "$filename (line $linenr)";
1212 if ($line =~ m/^\[(in|out):(\S+)\]\s*$/i) {
1217 if (!$section || !$group) {
1218 warn "$prefix: skip line - no section";
1223 eval { $rules = parse_fw_rule
($line, 0, 0); };
1225 warn "$prefix: $err";
1229 push @{$res->{$group}->{$section}}, @$rules;
1236 my ($code, @param) = @_;
1240 my $res = lock_file
($pve_fw_lock_filename, $timeout, $code, @param);
1247 sub read_local_vm_config
{
1253 my $list = PVE
::QemuServer
::config_list
();
1255 foreach my $vmid (keys %$list) {
1256 my $cfspath = PVE
::QemuServer
::cfs_config_path
($vmid);
1257 if (my $conf = PVE
::Cluster
::cfs_read_file
($cfspath)) {
1258 $qemu->{$vmid} = $conf;
1262 my $vmdata = { openvz
=> $openvz, qemu
=> $qemu };
1267 sub read_vm_firewall_rules
{
1270 foreach my $vmid (keys %{$vmdata->{qemu
}}, keys %{$vmdata->{openvz
}}) {
1271 my $filename = "/etc/pve/firewall/$vmid.fw";
1272 my $fh = IO
::File-
>new($filename, O_RDONLY
);
1275 $rules->{$vmid} = parse_vm_fw_rules
($filename, $fh);
1281 sub generate_std_chains
{
1284 foreach my $chain (keys %$pve_std_chains) {
1285 ruleset_create_chain
($ruleset, $chain);
1286 foreach my $rule (@{$pve_std_chains->{$chain}}) {
1288 ruleset_generate_rule
($ruleset, $chain, $rule);
1290 ruleset_addrule
($ruleset, $chain, $rule);
1297 my $vmdata = read_local_vm_config
();
1298 my $rules = read_vm_firewall_rules
($vmdata);
1300 my $group_rules = {};
1301 my $filename = "/etc/pve/firewall/groups.fw";
1302 if (my $fh = IO
::File-
>new($filename, O_RDONLY
)) {
1303 $group_rules = parse_group_fw_rules
($filename, $fh);
1306 #print Dumper($rules);
1310 ruleset_create_chain
($ruleset, "PVEFW-INPUT");
1311 ruleset_create_chain
($ruleset, "PVEFW-OUTPUT");
1312 ruleset_create_chain
($ruleset, "PVEFW-FORWARD");
1314 generate_std_chains
($ruleset);
1316 my $enable_hostfw = 0;
1317 $filename = "/etc/pve/local/host.fw";
1318 if (my $fh = IO
::File-
>new($filename, O_RDONLY
)) {
1319 my $host_rules = parse_host_fw_rules
($filename, $fh);
1323 enablehostfw
($ruleset, $host_rules, $group_rules);
1326 # generate firewall rules for QEMU VMs
1327 foreach my $vmid (keys %{$vmdata->{qemu
}}) {
1328 my $conf = $vmdata->{qemu
}->{$vmid};
1329 my $vmfw_conf = $rules->{$vmid};
1330 next if !$vmfw_conf;
1331 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
1333 foreach my $netid (keys %$conf) {
1334 next if $netid !~ m/^net(\d+)$/;
1335 my $net = PVE
::QemuServer
::parse_net
($conf->{$netid});
1337 my $iface = "tap${vmid}i$1";
1339 my $bridge = $net->{bridge
};
1340 next if !$bridge; # fixme: ?
1342 $bridge .= "v$net->{tag}" if $net->{tag
};
1345 generate_bridge_chains
($ruleset, $bridge);
1347 my $macaddr = $net->{macaddr
};
1348 generate_tap_rules_direction
($ruleset, $group_rules, $iface, $netid, $macaddr, $vmfw_conf, $bridge, 'IN');
1349 generate_tap_rules_direction
($ruleset, $group_rules, $iface, $netid, $macaddr, $vmfw_conf, $bridge, 'OUT');
1353 if ($enable_hostfw) {
1354 # allow traffic from lo (ourself)
1355 ruleset_addrule
($ruleset, "PVEFW-INPUT", "-i lo -j ACCEPT");
1361 sub get_ruleset_status
{
1362 my ($ruleset, $verbose) = @_;
1364 my $active_chains = iptables_get_chains
();
1366 my $statushash = {};
1368 foreach my $chain (sort keys %$ruleset) {
1369 my $digest = Digest
::SHA-
>new('sha1');
1370 foreach my $cmd (@{$ruleset->{$chain}}) {
1371 $digest->add("$cmd\n");
1373 my $sig = $digest->b64digest;
1374 $statushash->{$chain}->{sig
} = $sig;
1376 my $oldsig = $active_chains->{$chain};
1377 if (!defined($oldsig)) {
1378 $statushash->{$chain}->{action
} = 'create';
1380 if ($oldsig eq $sig) {
1381 $statushash->{$chain}->{action
} = 'exists';
1383 $statushash->{$chain}->{action
} = 'update';
1386 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
1387 foreach my $cmd (@{$ruleset->{$chain}}) {
1388 print "\t$cmd\n" if $verbose;
1392 foreach my $chain (sort keys %$active_chains) {
1393 if (!defined($ruleset->{$chain})) {
1394 my $sig = $active_chains->{$chain};
1395 $statushash->{$chain}->{action
} = 'delete';
1396 $statushash->{$chain}->{sig
} = $sig;
1397 print "delete $chain ($sig)\n" if $verbose;
1407 get_ruleset_status
($ruleset, 1);
1410 sub print_sig_rule
{
1411 my ($chain, $sig) = @_;
1413 # We just use this to store a SHA1 checksum used to detect changes
1414 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
1418 my ($ruleset, $verbose) = @_;
1420 enable_bridge_firewall();
1422 my $cmdlist = "*filter
\n"; # we pass this to iptables-restore;
1424 my $statushash = get_ruleset_status($ruleset, $verbose);
1426 # create missing chains first
1427 foreach my $chain (sort keys %$ruleset) {
1428 my $stat = $statushash->{$chain};
1429 die "internal error
" if !$stat;
1430 next if $stat->{action} ne 'create';
1432 $cmdlist .= ":$chain - [0:0]\n";
1435 my $rule = "INPUT
-j PVEFW-INPUT
";
1436 if (!PVE::Firewall::iptables_rule_exist($rule)) {
1437 $cmdlist .= "-A
$rule\n";
1439 $rule = "OUTPUT
-j PVEFW-OUTPUT
";
1440 if (!PVE::Firewall::iptables_rule_exist($rule)) {
1441 $cmdlist .= "-A
$rule\n";
1444 $rule = "FORWARD
-j PVEFW-FORWARD
";
1445 if (!PVE::Firewall::iptables_rule_exist($rule)) {
1446 $cmdlist .= "-A
$rule\n";
1449 foreach my $chain (sort keys %$ruleset) {
1450 my $stat = $statushash->{$chain};
1451 die "internal error
" if !$stat;
1453 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
1454 $cmdlist .= "-F
$chain\n";
1455 foreach my $cmd (@{$ruleset->{$chain}}) {
1456 $cmdlist .= "$cmd\n";
1458 $cmdlist .= print_sig_rule($chain, $stat->{sig});
1459 } elsif ($stat->{action} eq 'delete') {
1460 die "internal error
"; # this should not happen
1461 } elsif ($stat->{action} eq 'exists') {
1464 die "internal error
- unknown status
'$stat->{action}'";
1468 foreach my $chain (keys %$statushash) {
1469 next if $statushash->{$chain}->{action} ne 'delete';
1470 $cmdlist .= "-F
$chain\n";
1472 foreach my $chain (keys %$statushash) {
1473 next if $statushash->{$chain}->{action} ne 'delete';
1474 next if $chain eq 'PVEFW-INPUT';
1475 next if $chain eq 'PVEFW-OUTPUT';
1476 next if $chain eq 'PVEFW-FORWARD';
1477 $cmdlist .= "-X
$chain\n";
1480 $cmdlist .= "COMMIT
\n";
1482 print $cmdlist if $verbose;
1484 iptables_restore_cmdlist($cmdlist);
1486 # test: re-read status and check if everything is up to date
1487 $statushash = get_ruleset_status($ruleset);
1490 foreach my $chain (sort keys %$ruleset) {
1491 my $stat = $statushash->{$chain};
1492 if ($stat->{action} ne 'exists') {
1493 warn "unable to update chain
'$chain'\n";
1498 die "unable to apply firewall changes
\n" if $errors;