8 use PVE
::JSONSchema
qw(get_standard_option);
16 use PVE
::Tools
qw(run_command lock_file);
19 my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw";
21 # dynamically include PVE::QemuServer and PVE::OpenVZ
22 # to avoid dependency problems
25 require PVE
::QemuServer
;
26 $have_qemu_server = 1;
32 $have_pve_manager = 1;
37 my $nodename = PVE
::INotify
::nodename
();
39 my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
40 my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status";
42 my $default_log_level = 'info';
44 my $log_level_hash = {
55 # imported/converted from: /usr/share/shorewall/macro.*
58 { action
=> 'PARAM', proto
=> 'udp', dport
=> '10080' },
59 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10080' },
62 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '113' },
65 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '179' },
68 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6889' },
69 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
72 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6999' },
73 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
76 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2401' },
79 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1494' },
80 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1604' },
81 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2598' },
84 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3689' },
85 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3689' },
88 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6277' },
91 { action
=> 'PARAM', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
92 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
95 { action
=> 'PARAM', proto
=> 'udp', dport
=> '53' },
96 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '53' },
99 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3632' },
102 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4662' },
103 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4665' },
106 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '21' },
109 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '79' },
112 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2086' },
113 { action
=> 'PARAM', proto
=> 'udp', dport
=> '2086' },
114 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1080' },
115 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1080' },
118 { action
=> 'PARAM', proto
=> '47' },
119 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
122 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9418' },
125 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6346' },
126 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6346' },
129 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '11371' },
132 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
135 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
138 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3130' },
141 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5190' },
144 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '143' },
147 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '993' },
150 { action
=> 'PARAM', proto
=> '94' },
151 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '94' },
154 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '631' },
157 { action
=> 'PARAM', proto
=> 'udp', dport
=> '631' },
160 { action
=> 'PARAM', source
=> 'SOURCE', dest
=> 'DEST', proto
=> 'tcp', dport
=> '631' },
161 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '631' },
164 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
165 { action
=> 'PARAM', proto
=> '50' },
166 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
167 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
170 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
171 { action
=> 'PARAM', proto
=> '51' },
172 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
173 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '51' },
176 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500' },
177 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4500' },
178 { action
=> 'PARAM', proto
=> '50' },
179 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500' },
180 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '4500' },
181 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
184 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6667' },
187 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5222' },
190 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5223' },
193 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5269' },
196 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9100' },
199 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1701' },
200 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1701' },
203 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '389' },
206 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '636' },
209 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1863' },
212 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1433' },
215 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
216 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
217 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
220 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4949' },
223 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3306' },
226 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '119' },
229 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '563' },
232 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
235 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
236 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '123' },
239 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
240 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '123' },
243 { action
=> 'PARAM', proto
=> '89' },
246 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1194' },
249 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5632' },
250 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5631' },
253 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '110' },
256 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '995' },
259 { action
=> 'PARAM', proto
=> '47' },
260 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
261 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1723' },
264 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
267 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5432' },
270 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '515' },
273 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3389' },
276 { action
=> 'PARAM', proto
=> 'udp', dport
=> '520' },
277 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '520' },
280 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '953' },
283 { action
=> 'ACCEPT', proto
=> 'tcp', dport
=> '2703' },
286 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
289 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '873' },
292 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6566' },
295 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
296 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
297 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
298 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
301 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
302 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
303 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
304 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
305 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '135,445' },
306 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '137:139' },
307 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
308 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'tcp', dport
=> '135,139,445' },
311 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '901' },
314 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
317 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
320 { action
=> 'PARAM', proto
=> 'udp', dport
=> '161:162' },
321 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '161' },
324 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '783' },
327 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '22' },
330 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3690' },
333 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3874' },
334 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3740' },
335 { action
=> 'PARAM', proto
=> '41' },
336 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5072,8374' },
339 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3128' },
342 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
345 { action
=> 'PARAM', proto
=> 'udp', dport
=> '514' },
346 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '514' },
349 { action
=> 'PARAM', proto
=> 'udp', dport
=> '69' },
352 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '23' },
355 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '992' },
358 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
361 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
362 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
365 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5900:5909' },
368 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5500' },
371 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
372 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
375 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '8080' },
378 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10000' },
381 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '43' },
385 my $pve_fw_parsed_macros;
386 my $pve_fw_preferred_macro_names = {};
388 my $pve_std_chains = {
389 'PVEFW-SET-ACCEPT-MARK' => [
390 "-j MARK --set-mark 1",
392 'PVEFW-DropBroadcast' => [
393 # same as shorewall 'Broadcast'
394 # simply DROP BROADCAST/MULTICAST/ANYCAST
395 # we can use this to reduce logging
396 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
397 { action
=> 'DROP', dsttype
=> 'MULTICAST' },
398 { action
=> 'DROP', dsttype
=> 'ANYCAST' },
399 { action
=> 'DROP', dest
=> '224.0.0.0/4' },
402 # same as shorewall 'reject'
403 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
404 { action
=> 'DROP', source
=> '224.0.0.0/4' },
405 { action
=> 'DROP', proto
=> 'icmp' },
406 "-p tcp -j REJECT --reject-with tcp-reset",
407 "-p udp -j REJECT --reject-with icmp-port-unreachable",
408 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
409 "-j REJECT --reject-with icmp-host-prohibited",
412 # same as shorewall 'Drop', which is equal to DROP,
413 # but REJECT/DROP some packages to reduce logging,
414 # and ACCEPT critical ICMP types
415 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
416 # we are not interested in BROADCAST/MULTICAST/ANYCAST
417 { action
=> 'PVEFW-DropBroadcast' },
418 # ACCEPT critical ICMP types
419 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
420 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
421 # Drop packets with INVALID state
422 "-m conntrack --ctstate INVALID -j DROP",
423 # Drop Microsoft SMB noise
424 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
425 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
426 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
427 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
428 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
429 # Drop new/NotSyn traffic so that it doesn't get logged
430 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
432 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
435 # same as shorewall 'Reject', which is equal to Reject,
436 # but REJECT/DROP some packages to reduce logging,
437 # and ACCEPT critical ICMP types
438 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
439 # we are not interested in BROADCAST/MULTICAST/ANYCAST
440 { action
=> 'PVEFW-DropBroadcast' },
441 # ACCEPT critical ICMP types
442 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
443 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
444 # Drop packets with INVALID state
445 "-m conntrack --ctstate INVALID -j DROP",
446 # Drop Microsoft SMB noise
447 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
448 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
449 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
450 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
451 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
452 # Drop new/NotSyn traffic so that it doesn't get logged
453 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
455 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
457 'PVEFW-tcpflags' => [
458 # same as shorewall tcpflags action.
459 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
460 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
461 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
462 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
463 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
464 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
467 # same as shorewall smurfs action
468 # Filter packets for smurfs (packets with a broadcast address as the source).
469 "-s 0.0.0.0/32 -j RETURN",
470 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
471 "-s 224.0.0.0/4 -g PVEFW-smurflog",
475 # iptables -p icmp -h
476 my $icmp_type_names = {
479 'destination-unreachable' => 1,
480 'network-unreachable' => 1,
481 'host-unreachable' => 1,
482 'protocol-unreachable' => 1,
483 'port-unreachable' => 1,
484 'fragmentation-needed' => 1,
485 'source-route-failed' => 1,
486 'network-unknown' => 1,
488 'network-prohibited' => 1,
489 'host-prohibited' => 1,
490 'TOS-network-unreachable' => 1,
491 'TOS-host-unreachable' => 1,
492 'communication-prohibited' => 1,
493 'host-precedence-violation' => 1,
494 'precedence-cutoff' => 1,
495 'source-quench' => 1,
497 'network-redirect' => 1,
498 'host-redirect' => 1,
499 'TOS-network-redirect' => 1,
500 'TOS-host-redirect' => 1,
502 'router-advertisement' => 1,
503 'router-solicitation' => 1,
504 'time-exceeded' => 1,
505 'ttl-zero-during-transit' => 1,
506 'ttl-zero-during-reassembly' => 1,
507 'parameter-problem' => 1,
508 'ip-header-bad' => 1,
509 'required-option-missing' => 1,
510 'timestamp-request' => 1,
511 'timestamp-reply' => 1,
512 'address-mask-request' => 1,
513 'address-mask-reply' => 1,
516 sub init_firewall_macros
{
518 $pve_fw_parsed_macros = {};
520 foreach my $k (keys %$pve_fw_macros) {
521 my $lc_name = lc($k);
522 my $macro = $pve_fw_macros->{$k};
523 $pve_fw_preferred_macro_names->{$lc_name} = $k;
524 $pve_fw_parsed_macros->{$k} = $macro;
528 init_firewall_macros
();
532 sub get_etc_services
{
534 return $etc_services if $etc_services;
536 my $filename = "/etc/services";
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+(\S+)/(tcp|udp).*$!) {
552 $services->{byid
}->{$2}->{name
} = $1;
553 $services->{byid
}->{$2}->{port
} = $2;
554 $services->{byid
}->{$2}->{$3} = 1;
555 $services->{byname
}->{$1} = $services->{byid
}->{$2};
561 $etc_services = $services;
564 return $etc_services;
569 sub get_etc_protocols
{
570 return $etc_protocols if $etc_protocols;
572 my $filename = "/etc/protocols";
574 my $fh = IO
::File-
>new($filename, O_RDONLY
);
576 warn "unable to read '$filename' - $!\n";
582 while (my $line = <$fh>) {
584 next if $line =~m/^#/;
585 next if ($line =~m/^\s*$/);
587 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
588 $protocols->{byid
}->{$2}->{name
} = $1;
589 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
595 $etc_protocols = $protocols;
597 return $etc_protocols;
600 sub parse_address_list
{
604 foreach my $aor (split(/,/, $str)) {
605 if (!Net
::IP-
>new($aor)) {
606 my $err = Net
::IP
::Error
();
607 die "invalid IP address: $err\n";
615 sub parse_port_name_number_or_range
{
618 my $services = PVE
::Firewall
::get_etc_services
();
620 foreach my $item (split(/,/, $str)) {
624 foreach my $pon (split(':', $item, 2)) {
625 $pon = $services->{byname
}->{$pon}->{port
} if $services->{byname
}->{$pon}->{port
};
626 if ($pon =~ m/^\d+$/){
627 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65535;
628 die "port '$pon' must be bigger than port '$oldpon' \n" if $oldpon && ($pon < $oldpon);
631 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname
}->{$pon};
639 PVE
::JSONSchema
::register_format
('pve-fw-port-spec', \
&pve_fw_verify_port_spec
);
640 sub pve_fw_verify_port_spec
{
643 parse_port_name_number_or_range
($portstr);
648 PVE
::JSONSchema
::register_format
('pve-fw-v4addr-spec', \
&pve_fw_verify_v4addr_spec
);
649 sub pve_fw_verify_v4addr_spec
{
652 parse_address_list
($list);
657 PVE
::JSONSchema
::register_format
('pve-fw-protocol-spec', \
&pve_fw_verify_protocol_spec
);
658 sub pve_fw_verify_protocol_spec
{
661 my $protocols = get_etc_protocols
();
663 die "unknown protocol '$proto'\n" if $proto &&
664 !(defined($protocols->{byname
}->{$proto}) ||
665 defined($protocols->{byid
}->{$proto}));
671 # helper function for API
673 my $rule_properties = {
675 description
=> "Update rule at position <pos>.",
689 enum
=> ['in', 'out', 'group'],
694 enum
=> ['ACCEPT', 'DROP', 'REJECT'],
701 iface
=> get_standard_option
('pve-iface', { optional
=> 1 }),
703 type
=> 'string', format
=> 'pve-fw-v4addr-spec',
707 type
=> 'string', format
=> 'pve-fw-v4addr-spec',
711 type
=> 'string', format
=> 'pve-fw-protocol-spec',
719 type
=> 'string', format
=> 'pve-fw-port-spec',
723 type
=> 'string', format
=> 'pve-fw-port-spec',
732 sub cleanup_fw_rule
{
733 my ($rule, $digest, $pos) = @_;
737 foreach my $k (keys %$rule) {
738 next if !$rule_properties->{$k};
740 next if !defined($v);
742 $r->{digest
} = $digest;
749 sub add_rule_properties
{
750 my ($properties) = @_;
752 foreach my $k (keys %$rule_properties) {
753 $properties->{$k} = $rule_properties->{$k};
760 my ($rule, $param) = @_;
762 foreach my $k (keys %$rule_properties) {
763 if (defined(my $v = $param->{$k})) {
764 if ($v eq '' || $v eq '-') {
777 my $bridge_firewall_enabled = 0;
779 sub enable_bridge_firewall
{
781 return if $bridge_firewall_enabled; # only once
783 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
784 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
786 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
787 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/ipv4/tcp_syncookies", "1");
789 $bridge_firewall_enabled = 1;
792 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
797 run_command
("/sbin/iptables $cmd", outfunc
=> sub {}, errfunc
=> sub {});
800 sub iptables_restore_cmdlist
{
803 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist);
806 sub ipset_restore_cmdlist
{
809 run_command
(" /usr/sbin/ipset restore", input
=> $cmdlist);
812 sub iptables_get_chains
{
816 # check what chains we want to track
817 my $is_pvefw_chain = sub {
820 return 1 if $name =~ m/^PVEFW-\S+$/;
822 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
824 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
826 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
828 return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/;
829 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
839 return if $line =~ m/^#/;
840 return if $line =~ m/^\s*$/;
842 if ($line =~ m/^\*(\S+)$/) {
847 return if $table ne 'filter';
849 if ($line =~ m/^:(\S+)\s/) {
851 return if !&$is_pvefw_chain($chain);
852 $res->{$chain} = "unknown";
853 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
854 my ($chain, $sig) = ($1, $2);
855 return if !&$is_pvefw_chain($chain);
856 $res->{$chain} = $sig;
858 # simply ignore the rest
863 run_command
("/sbin/iptables-save", outfunc
=> $parser);
868 sub ipset_chain_digest
{
870 my $digest = Digest
::SHA-
>new('sha1');
871 foreach my $rule (sort @$rules) { # note: sorted
874 return $digest->b64digest;
877 sub ipset_get_chains
{
885 return if $line =~ m/^#/;
886 return if $line =~ m/^\s*$/;
887 if ($line =~ m/^(\S+)\s(\S+)\s(\S+)/) {
888 push @{$chains->{$2}}, $line;
890 # simply ignore the rest
895 run_command
("/usr/sbin/ipset save", outfunc
=> $parser);
897 # compute digest for each chain
898 foreach my $chain (keys %$chains) {
899 $res->{$chain} = ipset_chain_digest
($chains->{$chain});
905 sub iptables_chain_exist
{
909 iptables
("-n --list $chain");
916 sub iptables_rule_exist
{
920 iptables
("-C $rule");
927 sub ruleset_generate_cmdstr
{
928 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
930 return if defined($rule->{enable
}) && !$rule->{enable
};
932 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
934 my $nbdport = defined($rule->{dport
}) ? parse_port_name_number_or_range
($rule->{dport
}) : 0;
935 my $nbsport = defined($rule->{sport
}) ? parse_port_name_number_or_range
($rule->{sport
}) : 0;
936 my $nbsource = $rule->{source
} ? parse_address_list
( $rule->{source
}) : 0;
937 my $nbdest = $rule->{dest
} ? parse_address_list
($rule->{dest
}) : 0;
941 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in
};
942 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out
};
944 push @cmd, "-m iprange --src-range" if $nbsource > 1;
945 push @cmd, "-s $rule->{source}" if $rule->{source
};
946 push @cmd, "-m iprange --dst-range" if $nbdest > 1;
947 push @cmd, "-d $rule->{dest}" if $rule->{dest
};
949 if ($rule->{proto
}) {
950 push @cmd, "-p $rule->{proto}";
953 $multiport++ if $nbdport > 1;
954 $multiport++ if $nbsport > 1;
956 push @cmd, "--match multiport" if $multiport;
958 die "multiport: option '--sports' cannot be used together with '--dports'\n"
959 if ($multiport == 2) && ($rule->{dport
} ne $rule->{sport
});
961 if ($rule->{dport
}) {
962 if ($rule->{proto
} && $rule->{proto
} eq 'icmp') {
963 # Note: we use dport to store --icmp-type
964 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport
}});
965 push @cmd, "-m icmp --icmp-type $rule->{dport}";
968 if ($multiport == 2) {
969 push @cmd, "--ports $rule->{dport}";
971 push @cmd, "--dports $rule->{dport}";
974 push @cmd, "--dport $rule->{dport}";
979 if ($rule->{sport
}) {
981 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
983 push @cmd, "--sport $rule->{sport}";
986 } elsif ($rule->{dport
} || $rule->{sport
}) {
987 warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport
};
988 warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport
};
991 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
993 if (my $action = $rule->{action
}) {
994 $action = $actions->{$action} if defined($actions->{$action});
995 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
996 push @cmd, $goto ?
"-g $action" : "-j $action";
999 return scalar(@cmd) ?
join(' ', @cmd) : undef;
1002 my $apply_macro = sub {
1003 my ($macro_name, $param) = @_;
1005 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1006 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1010 foreach my $templ (@$macro_rules) {
1012 my $param_used = {};
1013 foreach my $k (keys %$templ) {
1014 my $v = $templ->{$k};
1015 if ($v eq 'PARAM') {
1017 $param_used->{$k} = 1;
1018 } elsif ($v eq 'DEST') {
1019 $v = $param->{dest
};
1020 $param_used->{dest
} = 1;
1021 } elsif ($v eq 'SOURCE') {
1022 $v = $param->{source
};
1023 $param_used->{source
} = 1;
1026 die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v);
1029 foreach my $k (keys %$param) {
1030 next if $k eq 'macro';
1031 next if !defined($param->{$k});
1032 next if $param_used->{$k};
1033 if (defined($rule->{$k})) {
1034 die "parameter '$k' already define in macro (value = '$rule->{$k}')\n"
1035 if $rule->{$k} ne $param->{$k};
1037 $rule->{$k} = $param->{$k};
1040 push @$rules, $rule;
1046 sub ruleset_generate_rule
{
1047 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1051 if ($rule->{macro}) {
1052 $rules = &$apply_macro($rule->{macro}, $rule);
1057 foreach my $tmp (@$rules) {
1058 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $tmp, $actions, $goto)) {
1059 ruleset_addrule
($ruleset, $chain, $cmdstr);
1064 sub ruleset_generate_rule_insert
{
1065 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1067 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1069 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $rule, $actions, $goto)) {
1070 ruleset_insertrule
($ruleset, $chain, $cmdstr);
1074 sub ruleset_create_chain
{
1075 my ($ruleset, $chain) = @_;
1077 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
1078 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
1080 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1082 $ruleset->{$chain} = [];
1085 sub ruleset_chain_exist
{
1086 my ($ruleset, $chain) = @_;
1088 return $ruleset->{$chain} ?
1 : undef;
1091 sub ruleset_addrule
{
1092 my ($ruleset, $chain, $rule) = @_;
1094 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1096 push @{$ruleset->{$chain}}, "-A $chain $rule";
1099 sub ruleset_insertrule
{
1100 my ($ruleset, $chain, $rule) = @_;
1102 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1104 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1107 sub get_log_rule_base
{
1108 my ($chain, $vmid, $msg, $loglevel) = @_;
1110 die "internal error - no log level" if !defined($loglevel);
1112 $vmid = 0 if !defined($vmid);
1114 # Note: we use special format for prefix to pass further
1115 # info to log daemon (VMID, LOGVELEL and CHAIN)
1117 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1120 sub ruleset_addlog {
1121 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1123 return if !defined($loglevel);
1125 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1127 $logrule = "$rule $logrule" if defined($rule);
1129 ruleset_addrule($ruleset, $chain, $logrule)
1132 sub generate_bridge_chains {
1133 my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_;
1135 my $options = $hostfw_conf->{options} || {};
1137 die "error
: detected direct route to bridge
'$bridge'\n"
1138 if !$options->{allow_bridge_route} && $routing_table->{$bridge};
1140 if (!ruleset_chain_exist($ruleset, "$bridge-FW
")) {
1141 ruleset_create_chain($ruleset, "$bridge-FW
");
1142 ruleset_addrule($ruleset, "PVEFW-FORWARD
", "-o
$bridge -m physdev
--physdev-is-out
-j
$bridge-FW
");
1143 ruleset_addrule($ruleset, "PVEFW-FORWARD
", "-i
$bridge -m physdev
--physdev-is-in
-j
$bridge-FW
");
1146 if (!ruleset_chain_exist($ruleset, "$bridge-OUT
")) {
1147 ruleset_create_chain($ruleset, "$bridge-OUT
");
1148 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-in
-j
$bridge-OUT
");
1149 ruleset_insertrule($ruleset, "PVEFW-INPUT
", "-i
$bridge -m physdev
--physdev-is-in
-j
$bridge-OUT
");
1152 if (!ruleset_chain_exist($ruleset, "$bridge-IN
")) {
1153 ruleset_create_chain($ruleset, "$bridge-IN
");
1154 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-out
-j
$bridge-IN
");
1155 ruleset_addrule($ruleset, "$bridge-FW
", "-m mark
--mark
1 -j ACCEPT
");
1156 # accept traffic to unmanaged bridge ports
1157 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-out
-j ACCEPT
");
1161 sub ruleset_add_chain_policy {
1162 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
1164 if ($policy eq 'ACCEPT') {
1166 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1167 { ACCEPT => $accept_action});
1169 } elsif ($policy eq 'DROP') {
1171 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop
");
1173 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1175 ruleset_addrule($ruleset, $chain, "-j DROP
");
1176 } elsif ($policy eq 'REJECT') {
1177 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject
");
1179 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1181 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject
");
1184 die "internal error
: unknown policy
'$policy'";
1188 sub ruleset_create_vm_chain {
1189 my ($ruleset, $chain, $options, $macaddr, $direction) = @_;
1191 ruleset_create_chain($ruleset, $chain);
1192 my $accept = generate_nfqueue($options);
1194 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1195 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1198 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
1199 if ($direction eq 'OUT') {
1200 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
1201 proto => 'udp', sport => 68, dport => 67 });
1203 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
1204 proto => 'udp', sport => 67, dport => 68 });
1208 if ($options->{tcpflags}) {
1209 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1212 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1213 if($direction eq 'OUT'){
1214 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-g PVEFW-SET-ACCEPT-MARK
");
1217 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j
$accept");
1219 if ($direction eq 'OUT') {
1220 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1221 ruleset_addrule($ruleset, $chain, "-m mac
! --mac-source
$macaddr -j DROP
");
1223 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1229 sub ruleset_generate_vm_rules {
1230 my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_;
1232 my $lc_direction = lc($direction);
1234 foreach my $rule (@$rules) {
1235 next if $rule->{iface} && $rule->{iface} ne $netid;
1236 next if !$rule->{enable};
1237 if ($rule->{type} eq 'group') {
1238 my $group_chain = "GROUP-
$rule->{action
}-$direction";
1239 if(!ruleset_chain_exist($ruleset, $group_chain)){
1240 generate_group_rules($ruleset, $cluster_conf, $rule->{action});
1242 ruleset_addrule($ruleset, $chain, "-j
$group_chain");
1243 if ($direction eq 'OUT'){
1244 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j RETURN
");
1246 my $accept = generate_nfqueue($options);
1247 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j
$accept");
1251 next if $rule->{type} ne $lc_direction;
1252 if ($direction eq 'OUT') {
1253 ruleset_generate_rule($ruleset, $chain, $rule,
1254 { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" });
1256 my $accept = generate_nfqueue($options);
1257 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject
" });
1263 sub generate_nfqueue {
1267 if($options->{ips}){
1268 $action = "NFQUEUE
";
1269 if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1270 if(defined($3) && defined($1)) {
1271 $action .= " --queue-balance
$1:$3";
1272 }elsif (defined($1)) {
1273 $action .= " --queue-num
$1";
1276 $action .= " --queue-bypass
";
1284 sub ruleset_generate_vm_ipsrules {
1285 my ($ruleset, $options, $direction, $iface, $bridge) = @_;
1287 if ($options->{ips} && $direction eq 'IN') {
1288 my $nfqueue = generate_nfqueue($options);
1290 if (!ruleset_chain_exist($ruleset, "$bridge-IPS
")) {
1291 ruleset_create_chain($ruleset, "PVEFW-IPS
");
1294 if (!ruleset_chain_exist($ruleset, "$bridge-IPS
")) {
1295 ruleset_create_chain($ruleset, "$bridge-IPS
");
1296 ruleset_insertrule($ruleset, "PVEFW-IPS
", "-o
$bridge -m physdev
--physdev-is-out
-j
$bridge-IPS
");
1299 ruleset_addrule($ruleset, "$bridge-IPS
", "-m physdev
--physdev-out
$iface --physdev-is-bridged
-j
$nfqueue");
1303 sub generate_venet_rules_direction {
1304 my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
1306 parse_address_list($ip); # make sure we have a valid $ip list
1308 my $lc_direction = lc($direction);
1310 my $rules = $vmfw_conf->{rules};
1312 my $options = $vmfw_conf->{options};
1313 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
1315 my $chain = "venet0-
$vmid-$direction";
1317 ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction);
1319 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction);
1324 if ($direction eq 'OUT') {
1325 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1327 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1330 my $accept = generate_nfqueue($options);
1331 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
1332 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
1334 # plug into FORWARD, INPUT and OUTPUT chain
1335 if ($direction eq 'OUT') {
1336 ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD
", {
1339 iface_in => 'venet0'});
1341 ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT
", {
1344 iface_in => 'venet0'});
1346 ruleset_generate_rule($ruleset, "PVEFW-FORWARD
", {
1349 iface_out => 'venet0'});
1351 ruleset_generate_rule($ruleset, "PVEFW-OUTPUT
", {
1354 iface_out => 'venet0'});
1358 sub generate_tap_rules_direction {
1359 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_;
1361 my $lc_direction = lc($direction);
1363 my $rules = $vmfw_conf->{rules};
1365 my $options = $vmfw_conf->{options};
1366 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
1368 my $tapchain = "$iface-$direction";
1370 ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction);
1372 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options);
1374 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge);
1379 if ($direction eq 'OUT') {
1380 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1382 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1385 my $accept = generate_nfqueue($options);
1386 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
1387 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
1389 # plug the tap chain to bridge chain
1390 if ($direction eq 'IN') {
1391 ruleset_insertrule($ruleset, "$bridge-IN
",
1392 "-m physdev
--physdev-is-bridged
--physdev-out
$iface -j
$tapchain");
1394 ruleset_insertrule($ruleset, "$bridge-OUT
",
1395 "-m physdev
--physdev-in
$iface -j
$tapchain");
1399 sub enable_host_firewall {
1400 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
1402 # fixme: allow security groups
1404 my $options = $hostfw_conf->{options};
1405 my $rules = $hostfw_conf->{rules};
1407 # host inbound firewall
1408 my $chain = "PVEFW-HOST-IN
";
1409 ruleset_create_chain($ruleset, $chain);
1411 my $loglevel = get_option_log_level($options, "log_level_in
");
1413 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1414 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1417 if ($options->{tcpflags}) {
1418 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1421 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1422 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j ACCEPT
");
1423 ruleset_addrule($ruleset, $chain, "-i lo
-j ACCEPT
");
1424 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
-j ACCEPT
");
1425 ruleset_addrule($ruleset, $chain, "-p udp
-m conntrack
--ctstate NEW
--dport
5404:5405 -j ACCEPT
");
1426 ruleset_addrule($ruleset, $chain, "-p udp
-m udp
--dport
9000 -j ACCEPT
"); #corosync
1428 # we use RETURN because we need to check also tap rules
1429 my $accept_action = 'RETURN';
1431 foreach my $rule (@$rules) {
1432 next if $rule->{type} ne 'in';
1433 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" });
1436 # implement input policy
1437 my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1438 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
1440 # host outbound firewall
1441 $chain = "PVEFW-HOST-OUT
";
1442 ruleset_create_chain($ruleset, $chain);
1444 $loglevel = get_option_log_level($options, "log_level_out
");
1446 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1447 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j ACCEPT
");
1448 ruleset_addrule($ruleset, $chain, "-o lo
-j ACCEPT
");
1449 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
-j ACCEPT
");
1450 ruleset_addrule($ruleset, $chain, "-p udp
-m conntrack
--ctstate NEW
--dport
5404:5405 -j ACCEPT
");
1451 ruleset_addrule($ruleset, $chain, "-p udp
-m udp
--dport
9000 -j ACCEPT
"); #corosync
1453 # we use RETURN because we may want to check other thigs later
1454 $accept_action = 'RETURN';
1456 foreach my $rule (@$rules) {
1457 next if $rule->{type} ne 'out';
1458 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" });
1461 # implement output policy
1462 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1463 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
1465 ruleset_addrule($ruleset, "PVEFW-OUTPUT
", "-j PVEFW-HOST-OUT
");
1466 ruleset_addrule($ruleset, "PVEFW-INPUT
", "-j PVEFW-HOST-IN
");
1469 sub generate_group_rules {
1470 my ($ruleset, $cluster_conf, $group) = @_;
1471 die "no such security group
'$group'\n" if !$cluster_conf->{rules}->{$group};
1473 my $rules = $cluster_conf->{rules}->{$group};
1475 my $chain = "GROUP-
${group
}-IN
";
1477 ruleset_create_chain($ruleset, $chain);
1478 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1480 foreach my $rule (@$rules) {
1481 next if $rule->{type} ne 'in';
1482 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" });
1485 $chain = "GROUP-
${group
}-OUT
";
1487 ruleset_create_chain($ruleset, $chain);
1488 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1490 foreach my $rule (@$rules) {
1491 next if $rule->{type} ne 'out';
1492 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1493 # check also other tap rules later
1494 ruleset_generate_rule($ruleset, $chain, $rule,
1495 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject
" });
1500 my $valid_netdev_names = {};
1501 for (my $i = 0; $i < $MAX_NETS; $i++) {
1502 $valid_netdev_names->{"net
$i"} = 1;
1506 my ($line, $need_iface, $allow_groups) = @_;
1508 my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport);
1510 # we can add single line comments to the end of the rule
1511 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
1513 # we can disable a rule when prefixed with '|'
1516 $enable = 0 if $line =~ s/^\|//;
1518 my @data = split(/\s+/, $line);
1519 my $expected_elements = $need_iface ? 8 : 7;
1521 die "wrong number of rule elements
\n" if scalar(@data) > $expected_elements;
1524 ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data
1526 ($type, $action, $source, $dest, $proto, $dport, $sport) = @data;
1529 die "incomplete rule
\n" if ! ($type && $action);
1535 if ($type eq 'in' || $type eq 'out') {
1536 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1538 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
1540 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1541 die "unknown
macro '$1'\n" if !$preferred_name;
1542 $macro = $preferred_name;
1544 die "unknown action
'$action'\n";
1546 } elsif ($type eq 'group') {
1547 die "wrong number of rule elements
\n" if scalar(@data) != 3;
1548 die "groups disabled
\n" if !$allow_groups;
1550 die "invalid characters
in group name
\n" if $action !~ m/^[A-Za-z0-9_\-]+$/;
1552 die "unknown rule type
'$type'\n";
1556 $iface = undef if $iface && $iface eq '-';
1559 $proto = undef if $proto && $proto eq '-';
1560 pve_fw_verify_protocol_spec($proto) if $proto;
1562 $source = undef if $source && $source eq '-';
1563 $dest = undef if $dest && $dest eq '-';
1565 $dport = undef if $dport && $dport eq '-';
1566 $sport = undef if $sport && $sport eq '-';
1568 parse_port_name_number_or_range($dport) if defined($dport);
1569 parse_port_name_number_or_range($sport) if defined($sport);
1571 parse_address_list($source) if $source;
1572 parse_address_list($dest) if $dest;
1577 comment => $comment,
1589 sub parse_vmfw_option {
1594 my $loglevels = "emerg
|alert
|crit
|err
|warning
|notice
|info
|debug
|nolog
";
1596 if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) {
1599 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1601 $value = $2 ? lc($3) : '';
1602 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1605 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1610 die "can
't parse option '$line'\n"
1613 return ($opt, $value);
1616 sub parse_hostfw_option {
1621 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1623 if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) {
1626 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
1628 $value = $2 ? lc($3) : '';
1629 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1632 } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) {
1637 die "can't parse option
'$line'\n"
1640 return ($opt, $value);
1643 sub parse_vm_fw_rules {
1644 my ($filename, $fh) = @_;
1646 my $res = { rules => [], options => {}};
1650 my $digest = Digest::SHA->new('sha1');
1652 while (defined(my $line = <$fh>)) {
1653 $digest->add($line);
1655 next if $line =~ m/^#/;
1656 next if $line =~ m/^\s*$/;
1658 my $linenr = $fh->input_line_number();
1659 my $prefix = "$filename (line
$linenr)";
1661 if ($line =~ m/^\[(\S+)\]\s*$/i) {
1663 warn "$prefix: ignore unknown section
'$section'\n" if !$res->{$section};
1667 warn "$prefix: skip line
- no section
";
1671 next if !$res->{$section}; # skip undefined section
1673 if ($section eq 'options') {
1675 my ($opt, $value) = parse_vmfw_option($line);
1676 $res->{options}->{$opt} = $value;
1678 warn "$prefix: $@" if $@;
1683 eval { $rule = parse_fw_rule($line, 1, 1); };
1685 warn "$prefix: $err";
1689 push @{$res->{$section}}, $rule;
1692 $res->{digest} = $digest->b64digest;
1697 sub parse_host_fw_rules {
1698 my ($filename, $fh) = @_;
1700 my $res = { rules => [], options => {}};
1704 my $digest = Digest::SHA->new('sha1');
1706 while (defined(my $line = <$fh>)) {
1707 $digest->add($line);
1709 next if $line =~ m/^#/;
1710 next if $line =~ m/^\s*$/;
1712 my $linenr = $fh->input_line_number();
1713 my $prefix = "$filename (line
$linenr)";
1715 if ($line =~ m/^\[(\S+)\]\s*$/i) {
1717 warn "$prefix: ignore unknown section
'$section'\n" if !$res->{$section};
1721 warn "$prefix: skip line
- no section
";
1725 next if !$res->{$section}; # skip undefined section
1727 if ($section eq 'options') {
1729 my ($opt, $value) = parse_hostfw_option($line);
1730 $res->{options}->{$opt} = $value;
1732 warn "$prefix: $@" if $@;
1737 eval { $rule = parse_fw_rule($line, 1, 1); };
1739 warn "$prefix: $err";
1743 push @{$res->{$section}}, $rule;
1746 $res->{digest} = $digest->b64digest;
1751 sub parse_group_fw_rules {
1752 my ($filename, $fh) = @_;
1757 my $res = { rules => {}, ipset => {} };
1759 my $digest = Digest::SHA->new('sha1');
1761 while (defined(my $line = <$fh>)) {
1762 $digest->add($line);
1764 next if $line =~ m/^#/;
1765 next if $line =~ m/^\s*$/;
1767 my $linenr = $fh->input_line_number();
1768 my $prefix = "$filename (line
$linenr)";
1770 if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) {
1776 if ($line =~ m/^\[ipgroup\s+(\S+)\]\s*$/i) {
1779 $res->{$section}->{$group}->{type} = 'hash:ip family inet hashsize 1024 maxelem 65536 ';
1783 if ($line =~ m/^\[netgroup\s+(\S+)\]\s*$/i) {
1786 $res->{$section}->{$group}->{type} = 'hash:net family inet hashsize 1024 maxelem 65536 ';
1791 if (!$section || !$group) {
1792 warn "$prefix: skip line
- no section
";
1796 if ($section eq 'rules') {
1798 eval { $rule = parse_fw_rule($line, 0, 0); };
1800 warn "$prefix: $err";
1803 push @{$res->{$section}->{$group}}, $rule;
1805 } elsif ($section eq 'ipset') {
1808 if (!Net::IP->new($line)) {
1809 warn "$prefix: $line is not an valid ip address
";
1812 push @{$res->{$section}->{$group}->{ip}}, $line;
1818 $res->{digest} = $digest->b64digest;
1824 my ($code, @param) = @_;
1828 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
1835 sub read_local_vm_config {
1840 my $vmdata = { openvz => $openvz, qemu => $qemu };
1842 my $vmlist = PVE::Cluster::get_vmlist();
1843 return $vmdata if !$vmlist || !$vmlist->{ids};
1844 my $ids = $vmlist->{ids};
1846 foreach my $vmid (keys %$ids) {
1847 next if !$vmid; # skip VE0
1848 my $d = $ids->{$vmid};
1849 next if !$d->{node} || $d->{node} ne $nodename;
1850 next if !$d->{type};
1851 if ($d->{type} eq 'openvz') {
1852 if ($have_pve_manager) {
1853 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
1854 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
1855 $openvz->{$vmid} = $conf;
1858 } elsif ($d->{type} eq 'qemu') {
1859 if ($have_qemu_server) {
1860 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
1861 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
1862 $qemu->{$vmid} = $conf;
1871 sub load_vmfw_conf {
1876 my $filename = "/etc/pve
/firewall/$vmid.fw
";
1877 if (my $fh = IO::File->new($filename, O_RDONLY)) {
1878 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
1884 sub read_vm_firewall_configs {
1886 my $vmfw_configs = {};
1888 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
1889 my $vmfw_conf = load_vmfw_conf($vmid);
1890 next if !$vmfw_conf->{options}; # skip if file does not exists
1891 $vmfw_configs->{$vmid} = $vmfw_conf;
1894 return $vmfw_configs;
1897 sub get_option_log_level {
1898 my ($options, $k) = @_;
1900 my $v = $options->{$k};
1901 $v = $default_log_level if !defined($v);
1903 return undef if $v eq '' || $v eq 'nolog';
1905 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
1907 return $v if ($v >= 0) && ($v <= 7);
1909 warn "unknown
log level
($k = '$v')\n";
1914 sub generate_std_chains {
1915 my ($ruleset, $options) = @_;
1917 my $loglevel = get_option_log_level($options, 'smurf_log_level');
1919 # same as shorewall smurflog.
1920 my $chain = 'PVEFW-smurflog';
1922 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP
: ", $loglevel) if $loglevel;
1923 push @{$pve_std_chains->{$chain}}, "-j DROP
";
1925 # same as shorewall logflags action.
1926 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
1927 $chain = 'PVEFW-logflags';
1928 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
1929 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP
: ", $loglevel) if $loglevel;
1930 push @{$pve_std_chains->{$chain}}, "-j DROP
";
1932 foreach my $chain (keys %$pve_std_chains) {
1933 ruleset_create_chain($ruleset, $chain);
1934 foreach my $rule (@{$pve_std_chains->{$chain}}) {
1936 ruleset_generate_rule($ruleset, $chain, $rule);
1938 ruleset_addrule($ruleset, $chain, $rule);
1944 sub generate_ipset_chains {
1945 my ($ipset_ruleset, $options) = @_;
1947 foreach my $ipset (keys %{$options->{ipset}}) {
1948 generate_ipset($ipset_ruleset, $ipset, $options->{ipset}->{$ipset});
1952 sub generate_ipset {
1953 my ($ipset_ruleset, $name, $options) = @_;
1955 push @{$ipset_ruleset->{$name}}, "create
$name $options->{type
}";
1957 foreach my $ip (@{$options->{ip}}) {
1958 push @{$ipset_ruleset->{$name}}, "add
$name $ip";
1962 sub save_pvefw_status {
1965 die "unknown status
'$status' - internal error
"
1966 if $status !~ m/^(stopped|active)$/;
1968 mkdir dirname($pve_fw_status_filename);
1969 PVE::Tools::file_set_contents($pve_fw_status_filename, $status);
1972 sub read_pvefw_status {
1974 my $status = 'unknown';
1976 return 'stopped' if ! -f $pve_fw_status_filename;
1979 $status = PVE::Tools::file_get_contents($pve_fw_status_filename);
1986 # fixme: move to pve-common PVE::ProcFSTools
1987 sub read_proc_net_route {
1988 my $filename = "/proc/net
/route
";
1992 my $fh = IO::File->new ($filename, "r
");
1993 return $res if !$fh;
1995 my $int_to_quad = sub {
1996 return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0);
1999 while (defined(my $line = <$fh>)) {
2000 next if $line =~/^Iface\s+Destination/; # skip head
2001 my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8];
2002 push @{$res->{$iface}}, {
2003 dest => &$int_to_quad(hex($dest)),
2004 gateway => &$int_to_quad(hex($gateway)),
2005 mask => &$int_to_quad(hex($mask)),
2014 sub load_clusterfw_conf {
2016 my $cluster_conf = {};
2017 if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) {
2018 $cluster_conf = parse_group_fw_rules($clusterfw_conf_filename, $fh);
2021 return $cluster_conf;
2024 sub save_clusterfw_conf {
2025 my ($cluster_conf) = @_;
2029 foreach my $group (sort keys %{$cluster_conf->{rules}}) {
2030 my $rules = $cluster_conf->{rules}->{$group};
2031 $raw .= "[group
$group]\n\n";
2033 foreach my $rule (@$rules) {
2034 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2035 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2036 $raw .= uc($rule->{type});
2037 $raw .= " " . $rule->{action};
2038 $raw .= " " . ($rule->{source} || '-');
2039 $raw .= " " . ($rule->{dest} || '-');
2040 $raw .= " " . ($rule->{proto} || '-');
2041 $raw .= " " . ($rule->{dport} || '-');
2042 $raw .= " " . ($rule->{sport} || '-');
2043 $raw .= " # " . encode('utf8', $rule->{comment})
2044 if $rule->{comment
} && $rule->{comment
} !~ m/^\s*$/;
2047 die "implement me '$rule->{type}'";
2054 PVE
::Tools
::file_set_contents
($clusterfw_conf_filename, $raw);
2057 sub load_hostfw_conf
{
2059 my $hostfw_conf = {};
2060 my $filename = "/etc/pve/local/host.fw";
2061 if (my $fh = IO
::File-
>new($filename, O_RDONLY
)) {
2062 $hostfw_conf = parse_host_fw_rules
($filename, $fh);
2064 return $hostfw_conf;
2068 my $vmdata = read_local_vm_config
();
2069 my $vmfw_configs = read_vm_firewall_configs
($vmdata);
2071 my $routing_table = read_proc_net_route
();
2073 my $cluster_conf = load_clusterfw_conf
();
2075 my $ipset_ruleset = {};
2076 generate_ipset_chains
($ipset_ruleset, $cluster_conf);
2080 ruleset_create_chain
($ruleset, "PVEFW-INPUT");
2081 ruleset_create_chain
($ruleset, "PVEFW-OUTPUT");
2083 ruleset_create_chain
($ruleset, "PVEFW-FORWARD");
2085 my $hostfw_conf = load_hostfw_conf
();
2086 my $hostfw_options = $hostfw_conf->{options
} || {};
2088 generate_std_chains
($ruleset, $hostfw_options);
2090 my $hostfw_enable = !(defined($hostfw_options->{enable
}) && ($hostfw_options->{enable
} == 0));
2092 enable_host_firewall
($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable;
2094 # generate firewall rules for QEMU VMs
2095 foreach my $vmid (keys %{$vmdata->{qemu
}}) {
2096 my $conf = $vmdata->{qemu
}->{$vmid};
2097 my $vmfw_conf = $vmfw_configs->{$vmid};
2098 next if !$vmfw_conf;
2099 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
2101 foreach my $netid (keys %$conf) {
2102 next if $netid !~ m/^net(\d+)$/;
2103 my $net = PVE
::QemuServer
::parse_net
($conf->{$netid});
2105 my $iface = "tap${vmid}i$1";
2107 my $bridge = $net->{bridge
};
2108 next if !$bridge; # fixme: ?
2110 $bridge .= "v$net->{tag}" if $net->{tag
};
2112 generate_bridge_chains
($ruleset, $hostfw_conf, $bridge, $routing_table);
2114 my $macaddr = $net->{macaddr
};
2115 generate_tap_rules_direction
($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2116 $vmfw_conf, $vmid, $bridge, 'IN');
2117 generate_tap_rules_direction
($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2118 $vmfw_conf, $vmid, $bridge, 'OUT');
2122 # generate firewall rules for OpenVZ containers
2123 foreach my $vmid (keys %{$vmdata->{openvz
}}) {
2124 my $conf = $vmdata->{openvz
}->{$vmid};
2126 my $vmfw_conf = $vmfw_configs->{$vmid};
2127 next if !$vmfw_conf;
2128 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
2130 if ($conf->{ip_address
} && $conf->{ip_address
}->{value
}) {
2131 my $ip = $conf->{ip_address
}->{value
};
2132 generate_venet_rules_direction
($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN');
2133 generate_venet_rules_direction
($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT');
2136 if ($conf->{netif
} && $conf->{netif
}->{value
}) {
2137 my $netif = PVE
::OpenVZ
::parse_netif
($conf->{netif
}->{value
});
2138 foreach my $netid (keys %$netif) {
2139 my $d = $netif->{$netid};
2140 my $bridge = $d->{bridge
};
2142 warn "no bridge device for CT $vmid iface '$netid'\n";
2146 generate_bridge_chains
($ruleset, $hostfw_conf, $bridge, $routing_table);
2148 my $macaddr = $d->{mac
};
2149 my $iface = $d->{host_ifname
};
2150 generate_tap_rules_direction
($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2151 $vmfw_conf, $vmid, $bridge, 'IN');
2152 generate_tap_rules_direction
($ruleset, $cluster_conf, $iface, $netid, $macaddr,
2153 $vmfw_conf, $vmid, $bridge, 'OUT');
2158 if($hostfw_options->{optimize
}){
2160 my $accept = ruleset_chain_exist
($ruleset, "PVEFW-IPS") ?
"PVEFW-IPS" : "ACCEPT";
2161 ruleset_insertrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
2162 ruleset_insertrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP");
2165 # fixme: what log level should we use here?
2166 my $loglevel = get_option_log_level
($hostfw_options, "log_level_out");
2168 # fixme: should we really block inter-bridge traffic?
2170 # always allow traffic from containers?
2171 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN");
2173 # disable interbridge routing
2174 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop");
2175 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop");
2176 ruleset_addlog
($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+");
2177 ruleset_addlog
($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+");
2178 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP");
2179 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP");
2181 return wantarray ?
($ruleset, $hostfw_conf, $ipset_ruleset) : $ruleset;
2184 sub get_ruleset_status
{
2185 my ($ruleset, $verbose, $ipset) = @_;
2187 my $active_chains = undef;
2189 $active_chains = ipset_get_chains
();
2191 $active_chains = iptables_get_chains
();
2194 my $statushash = {};
2196 foreach my $chain (sort keys %$ruleset) {
2197 my $sig = ipset_chain_digest
($ruleset->{$chain});
2198 $statushash->{$chain}->{sig
} = $sig;
2200 my $oldsig = $active_chains->{$chain};
2201 if (!defined($oldsig)) {
2202 $statushash->{$chain}->{action
} = 'create';
2204 if ($oldsig eq $sig) {
2205 $statushash->{$chain}->{action
} = 'exists';
2207 $statushash->{$chain}->{action
} = 'update';
2210 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2211 foreach my $cmd (@{$ruleset->{$chain}}) {
2212 print "\t$cmd\n" if $verbose;
2216 foreach my $chain (sort keys %$active_chains) {
2217 if (!defined($ruleset->{$chain})) {
2218 my $sig = $active_chains->{$chain};
2219 $statushash->{$chain}->{action
} = 'delete';
2220 $statushash->{$chain}->{sig
} = $sig;
2221 print "delete $chain ($sig)\n" if $verbose;
2228 sub print_sig_rule
{
2229 my ($chain, $sig) = @_;
2231 # We just use this to store a SHA1 checksum used to detect changes
2232 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
2235 sub get_rulset_cmdlist {
2236 my ($ruleset, $verbose) = @_;
2238 my $cmdlist = "*filter
\n"; # we pass this to iptables-restore;
2240 my $statushash = get_ruleset_status($ruleset, $verbose);
2242 # create missing chains first
2243 foreach my $chain (sort keys %$ruleset) {
2244 my $stat = $statushash->{$chain};
2245 die "internal error
" if !$stat;
2246 next if $stat->{action} ne 'create';
2248 $cmdlist .= ":$chain - [0:0]\n";
2251 my $rule = "INPUT
-j PVEFW-INPUT
";
2252 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2253 $cmdlist .= "-A
$rule\n";
2255 $rule = "OUTPUT
-j PVEFW-OUTPUT
";
2256 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2257 $cmdlist .= "-A
$rule\n";
2260 $rule = "FORWARD
-j PVEFW-FORWARD
";
2261 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2262 $cmdlist .= "-A
$rule\n";
2265 foreach my $chain (sort keys %$ruleset) {
2266 my $stat = $statushash->{$chain};
2267 die "internal error
" if !$stat;
2269 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2270 $cmdlist .= "-F
$chain\n";
2271 foreach my $cmd (@{$ruleset->{$chain}}) {
2272 $cmdlist .= "$cmd\n";
2274 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2275 } elsif ($stat->{action} eq 'delete') {
2276 die "internal error
"; # this should not happen
2277 } elsif ($stat->{action} eq 'exists') {
2280 die "internal error
- unknown status
'$stat->{action}'";
2284 foreach my $chain (keys %$statushash) {
2285 next if $statushash->{$chain}->{action} ne 'delete';
2286 $cmdlist .= "-F
$chain\n";
2288 foreach my $chain (keys %$statushash) {
2289 next if $statushash->{$chain}->{action} ne 'delete';
2290 next if $chain eq 'PVEFW-INPUT';
2291 next if $chain eq 'PVEFW-OUTPUT';
2292 next if $chain eq 'PVEFW-FORWARD';
2293 $cmdlist .= "-X
$chain\n";
2296 my $changes = $cmdlist ne "*filter
\n" ? 1 : 0;
2298 $cmdlist .= "COMMIT
\n";
2300 return wantarray ? ($cmdlist, $changes) : $cmdlist;
2303 sub get_ipset_cmdlist {
2304 my ($ruleset, $verbose) = @_;
2308 my $statushash = get_ruleset_status($ruleset, $verbose, 1);
2310 foreach my $chain (sort keys %$ruleset) {
2311 my $stat = $statushash->{$chain};
2312 die "internal error
" if !$stat;
2314 if ($stat->{action} eq 'create') {
2315 foreach my $cmd (@{$ruleset->{$chain}}) {
2316 $cmdlist .= "$cmd\n";
2320 if ($stat->{action} eq 'update') {
2321 my $chain_swap = $chain."_swap
";
2323 foreach my $cmd (@{$ruleset->{$chain}}) {
2324 $cmd =~ s/$chain/$chain_swap/;
2325 $cmdlist .= "$cmd\n";
2328 $cmdlist .= "swap
$chain_swap $chain\n";
2329 $cmdlist .= "flush
$chain_swap\n";
2330 $cmdlist .= "destroy
$chain_swap\n";
2335 foreach my $chain (keys %$statushash) {
2336 next if $statushash->{$chain}->{action} ne 'delete';
2338 $cmdlist .= "flush
$chain\n";
2339 $cmdlist .= "destroy
$chain\n";
2342 my $changes = $cmdlist ? 1 : 0;
2344 return wantarray ? ($cmdlist, $changes) : $cmdlist;
2348 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
2350 enable_bridge_firewall();
2352 update_nf_conntrack_max($hostfw_conf);
2354 my $ipsetcmdlist = get_ipset_cmdlist($ipset_ruleset, $verbose);
2356 my $cmdlist = get_rulset_cmdlist($ruleset, $verbose);
2358 print $ipsetcmdlist if $verbose;
2360 print $cmdlist if $verbose;
2362 ipset_restore_cmdlist($ipsetcmdlist);
2364 iptables_restore_cmdlist($cmdlist);
2366 # test: re-read status and check if everything is up to date
2367 my $statushash = get_ruleset_status($ruleset);
2370 foreach my $chain (sort keys %$ruleset) {
2371 my $stat = $statushash->{$chain};
2372 if ($stat->{action} ne 'exists') {
2373 warn "unable to update chain
'$chain'\n";
2378 die "unable to apply firewall changes
\n" if $errors;
2381 sub update_nf_conntrack_max {
2382 my ($hostfw_conf) = @_;
2384 my $max = 65536; # reasonable default
2386 my $options = $hostfw_conf->{options} || {};
2388 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
2389 $max = $options->{nf_conntrack_max};
2390 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2393 my $filename_nf_conntrack_max = "/proc/sys
/net/nf_conntrack_max
";
2394 my $filename_hashsize = "/sys/module
/nf_conntrack/parameters
/hashsize
";
2396 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
2398 if ($current != $max) {
2399 my $hashsize = int($max/4);
2400 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
2401 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
2406 my ($start, $verbose) = @_;
2409 my $status = read_pvefw_status();
2411 my ($ruleset, $hostfw_conf, $ipset_ruleset) = compile();
2413 if ($start || $status eq 'active') {
2415 save_pvefw_status('active') if ($status ne 'active');
2417 apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose);
2419 print "Firewall
not active
(status
= $status)\n" if $verbose;