15 use PVE
::Tools
qw(run_command lock_file);
18 # dynamically include PVE::QemuServer and PVE::OpenVZ
19 # to avoid dependency problems
22 require PVE
::QemuServer
;
23 $have_qemu_server = 1;
29 $have_pve_manager = 1;
34 my $nodename = PVE
::INotify
::nodename
();
36 my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
37 my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status";
39 my $default_log_level = 'info';
41 my $log_level_hash = {
52 # imported/converted from: /usr/share/shorewall/macro.*
55 { action
=> 'PARAM', proto
=> 'udp', dport
=> '10080' },
56 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10080' },
59 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '113' },
62 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '179' },
65 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6889' },
66 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
69 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6999' },
70 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
73 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2401' },
76 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1494' },
77 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1604' },
78 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2598' },
81 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3689' },
82 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3689' },
85 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6277' },
88 { action
=> 'PARAM', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
89 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
92 { action
=> 'PARAM', proto
=> 'udp', dport
=> '53' },
93 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '53' },
96 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3632' },
99 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4662' },
100 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4665' },
103 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '21' },
106 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '79' },
109 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2086' },
110 { action
=> 'PARAM', proto
=> 'udp', dport
=> '2086' },
111 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1080' },
112 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1080' },
115 { action
=> 'PARAM', proto
=> '47' },
116 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
119 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9418' },
122 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6346' },
123 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6346' },
126 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '11371' },
129 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
132 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
135 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3130' },
138 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5190' },
141 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '143' },
144 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '993' },
147 { action
=> 'PARAM', proto
=> '94' },
148 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '94' },
151 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '631' },
154 { action
=> 'PARAM', proto
=> 'udp', dport
=> '631' },
157 { action
=> 'PARAM', source
=> 'SOURCE', dest
=> 'DEST', proto
=> 'tcp', dport
=> '631' },
158 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '631' },
161 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
162 { action
=> 'PARAM', proto
=> '50' },
163 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
164 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
167 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
168 { action
=> 'PARAM', proto
=> '51' },
169 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
170 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '51' },
173 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500' },
174 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4500' },
175 { action
=> 'PARAM', proto
=> '50' },
176 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500' },
177 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '4500' },
178 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
181 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6667' },
184 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5222' },
187 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5223' },
190 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5269' },
193 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9100' },
196 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1701' },
197 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1701' },
200 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '389' },
203 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '636' },
206 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1863' },
209 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1433' },
212 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
213 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
214 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
217 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4949' },
220 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3306' },
223 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '119' },
226 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '563' },
229 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
232 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
233 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '123' },
236 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
237 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '123' },
240 { action
=> 'PARAM', proto
=> '89' },
243 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1194' },
246 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5632' },
247 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5631' },
250 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '110' },
253 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '995' },
256 { action
=> 'PARAM', proto
=> '47' },
257 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
258 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1723' },
261 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
264 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5432' },
267 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '515' },
270 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3389' },
273 { action
=> 'PARAM', proto
=> 'udp', dport
=> '520' },
274 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '520' },
277 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '953' },
280 { action
=> 'ACCEPT', proto
=> 'tcp', dport
=> '2703' },
283 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
286 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '873' },
289 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6566' },
292 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
293 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
294 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
295 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
298 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
299 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
300 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
301 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
302 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '135,445' },
303 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '137:139' },
304 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
305 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'tcp', dport
=> '135,139,445' },
308 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '901' },
311 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
314 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
317 { action
=> 'PARAM', proto
=> 'udp', dport
=> '161:162' },
318 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '161' },
321 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '783' },
324 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '22' },
327 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3690' },
330 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3874' },
331 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3740' },
332 { action
=> 'PARAM', proto
=> '41' },
333 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5072,8374' },
336 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3128' },
339 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
342 { action
=> 'PARAM', proto
=> 'udp', dport
=> '514' },
343 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '514' },
346 { action
=> 'PARAM', proto
=> 'udp', dport
=> '69' },
349 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '23' },
352 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '992' },
355 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
358 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
359 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
362 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5900:5909' },
365 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5500' },
368 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
369 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
372 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '8080' },
375 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10000' },
378 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '43' },
382 my $pve_fw_parsed_macros;
383 my $pve_fw_preferred_macro_names = {};
385 my $pve_std_chains = {
386 'PVEFW-SET-ACCEPT-MARK' => [
387 "-j MARK --set-mark 1",
389 'PVEFW-DropBroadcast' => [
390 # same as shorewall 'Broadcast'
391 # simply DROP BROADCAST/MULTICAST/ANYCAST
392 # we can use this to reduce logging
393 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
394 { action
=> 'DROP', dsttype
=> 'MULTICAST' },
395 { action
=> 'DROP', dsttype
=> 'ANYCAST' },
396 { action
=> 'DROP', dest
=> '224.0.0.0/4' },
399 # same as shorewall 'reject'
400 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
401 { action
=> 'DROP', source
=> '224.0.0.0/4' },
402 { action
=> 'DROP', proto
=> 'icmp' },
403 "-p tcp -j REJECT --reject-with tcp-reset",
404 "-p udp -j REJECT --reject-with icmp-port-unreachable",
405 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
406 "-j REJECT --reject-with icmp-host-prohibited",
409 # same as shorewall 'Drop', which is equal to DROP,
410 # but REJECT/DROP some packages to reduce logging,
411 # and ACCEPT critical ICMP types
412 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
413 # we are not interested in BROADCAST/MULTICAST/ANYCAST
414 { action
=> 'PVEFW-DropBroadcast' },
415 # ACCEPT critical ICMP types
416 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
417 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
418 # Drop packets with INVALID state
419 "-m conntrack --ctstate INVALID -j DROP",
420 # Drop Microsoft SMB noise
421 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
422 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
423 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
424 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
425 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
426 # Drop new/NotSyn traffic so that it doesn't get logged
427 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
429 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
432 # same as shorewall 'Reject', which is equal to Reject,
433 # but REJECT/DROP some packages to reduce logging,
434 # and ACCEPT critical ICMP types
435 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
436 # we are not interested in BROADCAST/MULTICAST/ANYCAST
437 { action
=> 'PVEFW-DropBroadcast' },
438 # ACCEPT critical ICMP types
439 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
440 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
441 # Drop packets with INVALID state
442 "-m conntrack --ctstate INVALID -j DROP",
443 # Drop Microsoft SMB noise
444 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
445 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
446 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
447 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
448 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
449 # Drop new/NotSyn traffic so that it doesn't get logged
450 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
452 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
454 'PVEFW-tcpflags' => [
455 # same as shorewall tcpflags action.
456 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
457 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
458 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
459 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
460 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
461 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
464 # same as shorewall smurfs action
465 # Filter packets for smurfs (packets with a broadcast address as the source).
466 "-s 0.0.0.0/32 -j RETURN",
467 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
468 "-s 224.0.0.0/4 -g PVEFW-smurflog",
472 # iptables -p icmp -h
473 my $icmp_type_names = {
476 'destination-unreachable' => 1,
477 'network-unreachable' => 1,
478 'host-unreachable' => 1,
479 'protocol-unreachable' => 1,
480 'port-unreachable' => 1,
481 'fragmentation-needed' => 1,
482 'source-route-failed' => 1,
483 'network-unknown' => 1,
485 'network-prohibited' => 1,
486 'host-prohibited' => 1,
487 'TOS-network-unreachable' => 1,
488 'TOS-host-unreachable' => 1,
489 'communication-prohibited' => 1,
490 'host-precedence-violation' => 1,
491 'precedence-cutoff' => 1,
492 'source-quench' => 1,
494 'network-redirect' => 1,
495 'host-redirect' => 1,
496 'TOS-network-redirect' => 1,
497 'TOS-host-redirect' => 1,
499 'router-advertisement' => 1,
500 'router-solicitation' => 1,
501 'time-exceeded' => 1,
502 'ttl-zero-during-transit' => 1,
503 'ttl-zero-during-reassembly' => 1,
504 'parameter-problem' => 1,
505 'ip-header-bad' => 1,
506 'required-option-missing' => 1,
507 'timestamp-request' => 1,
508 'timestamp-reply' => 1,
509 'address-mask-request' => 1,
510 'address-mask-reply' => 1,
513 sub get_firewall_macros
{
515 return $pve_fw_parsed_macros if $pve_fw_parsed_macros;
517 $pve_fw_parsed_macros = {};
519 foreach my $k (keys %$pve_fw_macros) {
520 my $lc_name = lc($k);
521 my $macro = $pve_fw_macros->{$k};
522 $pve_fw_preferred_macro_names->{$lc_name} = $k;
523 $pve_fw_parsed_macros->{$k} = $macro;
526 return $pve_fw_parsed_macros;
531 sub get_etc_services
{
533 return $etc_services if $etc_services;
535 my $filename = "/etc/services";
537 my $fh = IO
::File-
>new($filename, O_RDONLY
);
539 warn "unable to read '$filename' - $!\n";
545 while (my $line = <$fh>) {
547 next if $line =~m/^#/;
548 next if ($line =~m/^\s*$/);
550 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
551 $services->{byid
}->{$2}->{name
} = $1;
552 $services->{byid
}->{$2}->{port
} = $2;
553 $services->{byid
}->{$2}->{$3} = 1;
554 $services->{byname
}->{$1} = $services->{byid
}->{$2};
560 $etc_services = $services;
563 return $etc_services;
568 sub get_etc_protocols
{
569 return $etc_protocols if $etc_protocols;
571 my $filename = "/etc/protocols";
573 my $fh = IO
::File-
>new($filename, O_RDONLY
);
575 warn "unable to read '$filename' - $!\n";
581 while (my $line = <$fh>) {
583 next if $line =~m/^#/;
584 next if ($line =~m/^\s*$/);
586 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
587 $protocols->{byid
}->{$2}->{name
} = $1;
588 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
594 $etc_protocols = $protocols;
596 return $etc_protocols;
599 sub parse_address_list
{
603 foreach my $aor (split(/,/, $str)) {
604 if (!Net
::IP-
>new($aor)) {
605 my $err = Net
::IP
::Error
();
606 die "invalid IP address: $err\n";
614 sub parse_port_name_number_or_range
{
617 my $services = PVE
::Firewall
::get_etc_services
();
619 foreach my $item (split(/,/, $str)) {
623 foreach my $pon (split(':', $item, 2)) {
624 $pon = $services->{byname
}->{$pon}->{port
} if $services->{byname
}->{$pon}->{port
};
625 if ($pon =~ m/^\d+$/){
626 die "invalid port '$pon'\n" if $pon < 0 && $pon > 65535;
627 die "port '$pon' must be bigger than port '$oldpon' \n" if $oldpon && ($pon < $oldpon);
630 die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname
}->{$pon};
638 # helper function for API
640 my $rule_properties = {
642 description
=> "Update rule at position <pos>.",
654 enum
=> ['in', 'out', 'group'],
694 sub cleanup_fw_rule
{
695 my ($rule, $digest, $pos) = @_;
699 foreach my $k (keys %$rule) {
700 next if !$rule_properties->{$k};
702 next if !defined($v);
704 $r->{digest
} = $digest;
711 sub add_rule_properties
{
712 my ($properties) = @_;
714 foreach my $k (keys %$rule_properties) {
715 $properties->{$k} = $rule_properties->{$k};
722 my ($rule, $param) = @_;
724 foreach my $k (keys %$rule_properties) {
725 if (defined(my $v = $param->{$k})) {
726 if ($v eq '' || $v eq '-') {
739 my $bridge_firewall_enabled = 0;
741 sub enable_bridge_firewall
{
743 return if $bridge_firewall_enabled; # only once
745 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
746 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
748 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
749 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/ipv4/tcp_syncookies", "1");
751 $bridge_firewall_enabled = 1;
754 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
759 run_command
("/sbin/iptables $cmd", outfunc
=> sub {}, errfunc
=> sub {});
762 sub iptables_restore_cmdlist
{
765 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist);
768 sub iptables_get_chains
{
772 # check what chains we want to track
773 my $is_pvefw_chain = sub {
776 return 1 if $name =~ m/^PVEFW-\S+$/;
778 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
780 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
782 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
784 return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/;
785 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
795 return if $line =~ m/^#/;
796 return if $line =~ m/^\s*$/;
798 if ($line =~ m/^\*(\S+)$/) {
803 return if $table ne 'filter';
805 if ($line =~ m/^:(\S+)\s/) {
807 return if !&$is_pvefw_chain($chain);
808 $res->{$chain} = "unknown";
809 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
810 my ($chain, $sig) = ($1, $2);
811 return if !&$is_pvefw_chain($chain);
812 $res->{$chain} = $sig;
814 # simply ignore the rest
819 run_command
("/sbin/iptables-save", outfunc
=> $parser);
824 sub iptables_chain_exist
{
828 iptables
("-n --list $chain");
835 sub iptables_rule_exist
{
839 iptables
("-C $rule");
846 sub ruleset_generate_cmdstr
{
847 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
849 return if defined($rule->{enable
}) && !$rule->{enable
};
851 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
853 my $nbdport = defined($rule->{dport
}) ? parse_port_name_number_or_range
($rule->{dport
}) : 0;
854 my $nbsport = defined($rule->{sport
}) ? parse_port_name_number_or_range
($rule->{sport
}) : 0;
855 my $nbsource = $rule->{source
} ? parse_address_list
( $rule->{source
}) : 0;
856 my $nbdest = $rule->{dest
} ? parse_address_list
($rule->{dest
}) : 0;
860 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in
};
861 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out
};
863 push @cmd, "-m iprange --src-range" if $nbsource > 1;
864 push @cmd, "-s $rule->{source}" if $rule->{source
};
865 push @cmd, "-m iprange --dst-range" if $nbdest > 1;
866 push @cmd, "-d $rule->{dest}" if $rule->{dest
};
868 if ($rule->{proto
}) {
869 push @cmd, "-p $rule->{proto}";
872 $multiport++ if $nbdport > 1;
873 $multiport++ if $nbsport > 1;
875 push @cmd, "--match multiport" if $multiport;
877 die "multiport: option '--sports' cannot be used together with '--dports'\n"
878 if ($multiport == 2) && ($rule->{dport
} ne $rule->{sport
});
880 if ($rule->{dport
}) {
881 if ($rule->{proto
} && $rule->{proto
} eq 'icmp') {
882 # Note: we use dport to store --icmp-type
883 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport
}});
884 push @cmd, "-m icmp --icmp-type $rule->{dport}";
887 if ($multiport == 2) {
888 push @cmd, "--ports $rule->{dport}";
890 push @cmd, "--dports $rule->{dport}";
893 push @cmd, "--dport $rule->{dport}";
898 if ($rule->{sport
}) {
900 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
902 push @cmd, "--sport $rule->{sport}";
905 } elsif ($rule->{dport
} || $rule->{sport
}) {
906 warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport
};
907 warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport
};
910 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
912 if (my $action = $rule->{action
}) {
913 $action = $actions->{$action} if defined($actions->{$action});
914 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
915 push @cmd, $goto ?
"-g $action" : "-j $action";
918 return scalar(@cmd) ?
join(' ', @cmd) : undef;
921 my $apply_macro = sub {
922 my ($macro_name, $param) = @_;
924 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
925 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
929 foreach my $templ (@$macro_rules) {
932 foreach my $k (keys %$templ) {
933 my $v = $templ->{$k};
936 $param_used->{$k} = 1;
937 } elsif ($v eq 'DEST') {
939 $param_used->{dest
} = 1;
940 } elsif ($v eq 'SOURCE') {
941 $v = $param->{source
};
942 $param_used->{source
} = 1;
945 die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v);
948 foreach my $k (keys %$param) {
949 next if $k eq 'macro';
950 next if !defined($param->{$k});
951 next if $param_used->{$k};
952 if (defined($rule->{$k})) {
953 die "parameter '$k' already define in macro (value = '$rule->{$k}')\n"
954 if $rule->{$k} ne $param->{$k};
956 $rule->{$k} = $param->{$k};
965 sub ruleset_generate_rule
{
966 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
970 if ($rule->{macro}) {
971 $rules = &$apply_macro($rule->{macro}, $rule);
976 foreach my $tmp (@$rules) {
977 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $tmp, $actions, $goto)) {
978 ruleset_addrule
($ruleset, $chain, $cmdstr);
983 sub ruleset_generate_rule_insert
{
984 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
986 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
988 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $rule, $actions, $goto)) {
989 ruleset_insertrule
($ruleset, $chain, $cmdstr);
993 sub ruleset_create_chain
{
994 my ($ruleset, $chain) = @_;
996 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
997 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
999 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1001 $ruleset->{$chain} = [];
1004 sub ruleset_chain_exist
{
1005 my ($ruleset, $chain) = @_;
1007 return $ruleset->{$chain} ?
1 : undef;
1010 sub ruleset_addrule
{
1011 my ($ruleset, $chain, $rule) = @_;
1013 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1015 push @{$ruleset->{$chain}}, "-A $chain $rule";
1018 sub ruleset_insertrule
{
1019 my ($ruleset, $chain, $rule) = @_;
1021 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1023 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1026 sub get_log_rule_base
{
1027 my ($chain, $vmid, $msg, $loglevel) = @_;
1029 die "internal error - no log level" if !defined($loglevel);
1031 $vmid = 0 if !defined($vmid);
1033 # Note: we use special format for prefix to pass further
1034 # info to log daemon (VMID, LOGVELEL and CHAIN)
1036 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1039 sub ruleset_addlog {
1040 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1042 return if !defined($loglevel);
1044 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1046 $logrule = "$rule $logrule" if defined($rule);
1048 ruleset_addrule($ruleset, $chain, $logrule)
1051 sub generate_bridge_chains {
1052 my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_;
1054 my $options = $hostfw_conf->{options} || {};
1056 die "error
: detected direct route to bridge
'$bridge'\n"
1057 if !$options->{allow_bridge_route} && $routing_table->{$bridge};
1059 if (!ruleset_chain_exist($ruleset, "$bridge-FW
")) {
1060 ruleset_create_chain($ruleset, "$bridge-FW
");
1061 ruleset_addrule($ruleset, "PVEFW-FORWARD
", "-o
$bridge -m physdev
--physdev-is-out
-j
$bridge-FW
");
1062 ruleset_addrule($ruleset, "PVEFW-FORWARD
", "-i
$bridge -m physdev
--physdev-is-in
-j
$bridge-FW
");
1065 if (!ruleset_chain_exist($ruleset, "$bridge-OUT
")) {
1066 ruleset_create_chain($ruleset, "$bridge-OUT
");
1067 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-in
-j
$bridge-OUT
");
1068 ruleset_insertrule($ruleset, "PVEFW-INPUT
", "-i
$bridge -m physdev
--physdev-is-in
-j
$bridge-OUT
");
1071 if (!ruleset_chain_exist($ruleset, "$bridge-IN
")) {
1072 ruleset_create_chain($ruleset, "$bridge-IN
");
1073 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-out
-j
$bridge-IN
");
1074 ruleset_addrule($ruleset, "$bridge-FW
", "-m mark
--mark
1 -j ACCEPT
");
1075 # accept traffic to unmanaged bridge ports
1076 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-out
-j ACCEPT
");
1080 sub ruleset_add_chain_policy {
1081 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
1083 if ($policy eq 'ACCEPT') {
1085 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1086 { ACCEPT => $accept_action});
1088 } elsif ($policy eq 'DROP') {
1090 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop
");
1092 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1094 ruleset_addrule($ruleset, $chain, "-j DROP
");
1095 } elsif ($policy eq 'REJECT') {
1096 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject
");
1098 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1100 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject
");
1103 die "internal error
: unknown policy
'$policy'";
1107 sub ruleset_create_vm_chain {
1108 my ($ruleset, $chain, $options, $macaddr, $direction) = @_;
1110 ruleset_create_chain($ruleset, $chain);
1111 my $accept = generate_nfqueue($options);
1113 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1114 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1117 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
1118 if ($direction eq 'OUT') {
1119 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
1120 proto => 'udp', sport => 68, dport => 67 });
1122 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
1123 proto => 'udp', sport => 67, dport => 68 });
1127 if ($options->{tcpflags}) {
1128 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1131 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1132 if($direction eq 'OUT'){
1133 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-g PVEFW-SET-ACCEPT-MARK
");
1136 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j
$accept");
1138 if ($direction eq 'OUT') {
1139 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1140 ruleset_addrule($ruleset, $chain, "-m mac
! --mac-source
$macaddr -j DROP
");
1142 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1148 sub ruleset_generate_vm_rules {
1149 my ($ruleset, $rules, $groups_conf, $chain, $netid, $direction, $options) = @_;
1151 my $lc_direction = lc($direction);
1153 foreach my $rule (@$rules) {
1154 next if $rule->{iface} && $rule->{iface} ne $netid;
1155 next if !$rule->{enable};
1156 if ($rule->{type} eq 'group') {
1157 my $group_chain = "GROUP-
$rule->{action
}-$direction";
1158 if(!ruleset_chain_exist($ruleset, $group_chain)){
1159 generate_group_rules($ruleset, $groups_conf, $rule->{action});
1161 ruleset_addrule($ruleset, $chain, "-j
$group_chain");
1162 if ($direction eq 'OUT'){
1163 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j RETURN
");
1165 my $accept = generate_nfqueue($options);
1166 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j
$accept");
1170 next if $rule->{type} ne $lc_direction;
1171 if ($direction eq 'OUT') {
1172 ruleset_generate_rule($ruleset, $chain, $rule,
1173 { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" });
1175 my $accept = generate_nfqueue($options);
1176 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject
" });
1182 sub generate_nfqueue {
1186 if($options->{ips}){
1187 $action = "NFQUEUE
";
1188 if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1189 if(defined($3) && defined($1)) {
1190 $action .= " --queue-balance
$1:$3";
1191 }elsif (defined($1)) {
1192 $action .= " --queue-num
$1";
1195 $action .= " --queue-bypass
";
1203 sub ruleset_generate_vm_ipsrules {
1204 my ($ruleset, $options, $direction, $iface, $bridge) = @_;
1206 if ($options->{ips} && $direction eq 'IN') {
1207 my $nfqueue = generate_nfqueue($options);
1209 if (!ruleset_chain_exist($ruleset, "$bridge-IPS
")) {
1210 ruleset_create_chain($ruleset, "PVEFW-IPS
");
1213 if (!ruleset_chain_exist($ruleset, "$bridge-IPS
")) {
1214 ruleset_create_chain($ruleset, "$bridge-IPS
");
1215 ruleset_insertrule($ruleset, "PVEFW-IPS
", "-o
$bridge -m physdev
--physdev-is-out
-j
$bridge-IPS
");
1218 ruleset_addrule($ruleset, "$bridge-IPS
", "-m physdev
--physdev-out
$iface --physdev-is-bridged
-j
$nfqueue");
1222 sub generate_venet_rules_direction {
1223 my ($ruleset, $groups_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
1225 parse_address_list($ip); # make sure we have a valid $ip list
1227 my $lc_direction = lc($direction);
1229 my $rules = $vmfw_conf->{rules};
1231 my $options = $vmfw_conf->{options};
1232 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
1234 my $chain = "venet0-
$vmid-$direction";
1236 ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction);
1238 ruleset_generate_vm_rules($ruleset, $rules, $groups_conf, $chain, 'venet', $direction);
1243 if ($direction eq 'OUT') {
1244 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1246 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1249 my $accept = generate_nfqueue($options);
1250 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
1251 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
1253 # plug into FORWARD, INPUT and OUTPUT chain
1254 if ($direction eq 'OUT') {
1255 ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD
", {
1258 iface_in => 'venet0'});
1260 ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT
", {
1263 iface_in => 'venet0'});
1265 ruleset_generate_rule($ruleset, "PVEFW-FORWARD
", {
1268 iface_out => 'venet0'});
1270 ruleset_generate_rule($ruleset, "PVEFW-OUTPUT
", {
1273 iface_out => 'venet0'});
1277 sub generate_tap_rules_direction {
1278 my ($ruleset, $groups_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_;
1280 my $lc_direction = lc($direction);
1282 my $rules = $vmfw_conf->{rules};
1284 my $options = $vmfw_conf->{options};
1285 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
1287 my $tapchain = "$iface-$direction";
1289 ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction);
1291 ruleset_generate_vm_rules($ruleset, $rules, $groups_conf, $tapchain, $netid, $direction, $options);
1293 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge);
1298 if ($direction eq 'OUT') {
1299 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1301 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1304 my $accept = generate_nfqueue($options);
1305 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
1306 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
1308 # plug the tap chain to bridge chain
1309 if ($direction eq 'IN') {
1310 ruleset_insertrule($ruleset, "$bridge-IN
",
1311 "-m physdev
--physdev-is-bridged
--physdev-out
$iface -j
$tapchain");
1313 ruleset_insertrule($ruleset, "$bridge-OUT
",
1314 "-m physdev
--physdev-in
$iface -j
$tapchain");
1318 sub enable_host_firewall {
1319 my ($ruleset, $hostfw_conf, $groups_conf) = @_;
1321 # fixme: allow security groups
1323 my $options = $hostfw_conf->{options};
1324 my $rules = $hostfw_conf->{rules};
1326 # host inbound firewall
1327 my $chain = "PVEFW-HOST-IN
";
1328 ruleset_create_chain($ruleset, $chain);
1330 my $loglevel = get_option_log_level($options, "log_level_in
");
1332 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1333 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1336 if ($options->{tcpflags}) {
1337 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1340 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1341 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j ACCEPT
");
1342 ruleset_addrule($ruleset, $chain, "-i lo
-j ACCEPT
");
1343 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
-j ACCEPT
");
1344 ruleset_addrule($ruleset, $chain, "-p udp
-m conntrack
--ctstate NEW
--dport
5404:5405 -j ACCEPT
");
1345 ruleset_addrule($ruleset, $chain, "-p udp
-m udp
--dport
9000 -j ACCEPT
"); #corosync
1347 # we use RETURN because we need to check also tap rules
1348 my $accept_action = 'RETURN';
1350 foreach my $rule (@$rules) {
1351 next if $rule->{type} ne 'in';
1352 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" });
1355 # implement input policy
1356 my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1357 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
1359 # host outbound firewall
1360 $chain = "PVEFW-HOST-OUT
";
1361 ruleset_create_chain($ruleset, $chain);
1363 $loglevel = get_option_log_level($options, "log_level_out
");
1365 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1366 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j ACCEPT
");
1367 ruleset_addrule($ruleset, $chain, "-o lo
-j ACCEPT
");
1368 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
-j ACCEPT
");
1369 ruleset_addrule($ruleset, $chain, "-p udp
-m conntrack
--ctstate NEW
--dport
5404:5405 -j ACCEPT
");
1370 ruleset_addrule($ruleset, $chain, "-p udp
-m udp
--dport
9000 -j ACCEPT
"); #corosync
1372 # we use RETURN because we may want to check other thigs later
1373 $accept_action = 'RETURN';
1375 foreach my $rule (@$rules) {
1376 next if $rule->{type} ne 'out';
1377 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" });
1380 # implement output policy
1381 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1382 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
1384 ruleset_addrule($ruleset, "PVEFW-OUTPUT
", "-j PVEFW-HOST-OUT
");
1385 ruleset_addrule($ruleset, "PVEFW-INPUT
", "-j PVEFW-HOST-IN
");
1388 sub generate_group_rules {
1389 my ($ruleset, $groups_conf, $group) = @_;
1390 die "no such security group
'$group'\n" if !$groups_conf->{rules}->{$group};
1392 my $rules = $groups_conf->{rules}->{$group};
1394 my $chain = "GROUP-
${group
}-IN
";
1396 ruleset_create_chain($ruleset, $chain);
1397 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1399 foreach my $rule (@$rules) {
1400 next if $rule->{type} ne 'in';
1401 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" });
1404 $chain = "GROUP-
${group
}-OUT
";
1406 ruleset_create_chain($ruleset, $chain);
1407 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1409 foreach my $rule (@$rules) {
1410 next if $rule->{type} ne 'out';
1411 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1412 # check also other tap rules later
1413 ruleset_generate_rule($ruleset, $chain, $rule,
1414 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject
" });
1419 my $valid_netdev_names = {};
1420 for (my $i = 0; $i < $MAX_NETS; $i++) {
1421 $valid_netdev_names->{"net
$i"} = 1;
1425 my ($line, $need_iface, $allow_groups) = @_;
1427 my $macros = get_firewall_macros();
1428 my $protocols = get_etc_protocols();
1430 my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport);
1432 # we can add single line comments to the end of the rule
1433 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
1435 # we can disable a rule when prefixed with '|'
1438 $enable = 0 if $line =~ s/^\|//;
1440 my @data = split(/\s+/, $line);
1441 my $expected_elements = $need_iface ? 8 : 7;
1443 die "wrong number of rule elements
\n" if scalar(@data) > $expected_elements;
1446 ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data
1448 ($type, $action, $source, $dest, $proto, $dport, $sport) = @data;
1451 die "incomplete rule
\n" if ! ($type && $action);
1457 if ($type eq 'in' || $type eq 'out') {
1458 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1460 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
1462 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1463 die "unknown
macro '$1'\n" if !$preferred_name;
1464 $macro = $preferred_name;
1466 die "unknown action
'$action'\n";
1468 } elsif ($type eq 'group') {
1469 die "wrong number of rule elements
\n" if scalar(@data) != 3;
1470 die "groups disabled
\n" if !$allow_groups;
1472 die "invalid characters
in group name
\n" if $action !~ m/^[A-Za-z0-9_\-]+$/;
1474 die "unknown rule type
'$type'\n";
1478 $iface = undef if $iface && $iface eq '-';
1481 $proto = undef if $proto && $proto eq '-';
1482 die "unknown protokol
'$proto'\n" if $proto &&
1483 !(defined($protocols->{byname}->{$proto}) ||
1484 defined($protocols->{byid}->{$proto}));
1486 $source = undef if $source && $source eq '-';
1487 $dest = undef if $dest && $dest eq '-';
1489 $dport = undef if $dport && $dport eq '-';
1490 $sport = undef if $sport && $sport eq '-';
1492 parse_port_name_number_or_range($dport) if defined($dport);
1493 parse_port_name_number_or_range($sport) if defined($sport);
1495 parse_address_list($source) if $source;
1496 parse_address_list($dest) if $dest;
1501 comment => $comment,
1513 sub parse_vmfw_option {
1518 my $loglevels = "emerg
|alert
|crit
|err
|warning
|notice
|info
|debug
|nolog
";
1520 if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) {
1523 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1525 $value = $2 ? lc($3) : '';
1526 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1529 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1534 die "can
't parse option '$line'\n"
1537 return ($opt, $value);
1540 sub parse_hostfw_option {
1545 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1547 if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) {
1550 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
1552 $value = $2 ? lc($3) : '';
1553 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1556 } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) {
1561 die "can't parse option
'$line'\n"
1564 return ($opt, $value);
1567 sub parse_vm_fw_rules {
1568 my ($filename, $fh) = @_;
1570 my $res = { rules => [], options => {}};
1574 my $digest = Digest::SHA->new('sha1');
1576 while (defined(my $line = <$fh>)) {
1577 $digest->add($line);
1579 next if $line =~ m/^#/;
1580 next if $line =~ m/^\s*$/;
1582 my $linenr = $fh->input_line_number();
1583 my $prefix = "$filename (line
$linenr)";
1585 if ($line =~ m/^\[(\S+)\]\s*$/i) {
1587 warn "$prefix: ignore unknown section
'$section'\n" if !$res->{$section};
1591 warn "$prefix: skip line
- no section
";
1595 next if !$res->{$section}; # skip undefined section
1597 if ($section eq 'options') {
1599 my ($opt, $value) = parse_vmfw_option($line);
1600 $res->{options}->{$opt} = $value;
1602 warn "$prefix: $@" if $@;
1607 eval { $rule = parse_fw_rule($line, 1, 1); };
1609 warn "$prefix: $err";
1613 push @{$res->{$section}}, $rule;
1616 $res->{digest} = $digest->b64digest;
1621 sub parse_host_fw_rules {
1622 my ($filename, $fh) = @_;
1624 my $res = { rules => [], options => {}};
1628 my $digest = Digest::SHA->new('sha1');
1630 while (defined(my $line = <$fh>)) {
1631 $digest->add($line);
1633 next if $line =~ m/^#/;
1634 next if $line =~ m/^\s*$/;
1636 my $linenr = $fh->input_line_number();
1637 my $prefix = "$filename (line
$linenr)";
1639 if ($line =~ m/^\[(\S+)\]\s*$/i) {
1641 warn "$prefix: ignore unknown section
'$section'\n" if !$res->{$section};
1645 warn "$prefix: skip line
- no section
";
1649 next if !$res->{$section}; # skip undefined section
1651 if ($section eq 'options') {
1653 my ($opt, $value) = parse_hostfw_option($line);
1654 $res->{options}->{$opt} = $value;
1656 warn "$prefix: $@" if $@;
1661 eval { $rule = parse_fw_rule($line, 1, 1); };
1663 warn "$prefix: $err";
1667 push @{$res->{$section}}, $rule;
1670 $res->{digest} = $digest->b64digest;
1675 sub parse_group_fw_rules {
1676 my ($filename, $fh) = @_;
1681 my $res = { rules => {} };
1683 my $digest = Digest::SHA->new('sha1');
1685 while (defined(my $line = <$fh>)) {
1686 $digest->add($line);
1688 next if $line =~ m/^#/;
1689 next if $line =~ m/^\s*$/;
1691 my $linenr = $fh->input_line_number();
1692 my $prefix = "$filename (line
$linenr)";
1694 if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) {
1699 if (!$section || !$group) {
1700 warn "$prefix: skip line
- no section
";
1705 eval { $rule = parse_fw_rule($line, 0, 0); };
1707 warn "$prefix: $err";
1711 push @{$res->{$section}->{$group}}, $rule;
1714 $res->{digest} = $digest->b64digest;
1720 my ($code, @param) = @_;
1724 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
1731 sub read_local_vm_config {
1736 my $vmdata = { openvz => $openvz, qemu => $qemu };
1738 my $vmlist = PVE::Cluster::get_vmlist();
1739 return $vmdata if !$vmlist || !$vmlist->{ids};
1740 my $ids = $vmlist->{ids};
1742 foreach my $vmid (keys %$ids) {
1743 next if !$vmid; # skip VE0
1744 my $d = $ids->{$vmid};
1745 next if !$d->{node} || $d->{node} ne $nodename;
1746 next if !$d->{type};
1747 if ($d->{type} eq 'openvz') {
1748 if ($have_pve_manager) {
1749 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
1750 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
1751 $openvz->{$vmid} = $conf;
1754 } elsif ($d->{type} eq 'qemu') {
1755 if ($have_qemu_server) {
1756 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
1757 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
1758 $qemu->{$vmid} = $conf;
1767 sub load_vmfw_conf {
1772 my $filename = "/etc/pve
/firewall/$vmid.fw
";
1773 if (my $fh = IO::File->new($filename, O_RDONLY)) {
1774 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
1780 sub read_vm_firewall_configs {
1782 my $vmfw_configs = {};
1784 foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) {
1785 my $vmfw_conf = load_vmfw_conf($vmid);
1786 next if !$vmfw_conf->{options}; # skip if file does not exists
1787 $vmfw_configs->{$vmid} = $vmfw_conf;
1790 return $vmfw_configs;
1793 sub get_option_log_level {
1794 my ($options, $k) = @_;
1796 my $v = $options->{$k};
1797 $v = $default_log_level if !defined($v);
1799 return undef if $v eq '' || $v eq 'nolog';
1801 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
1803 return $v if ($v >= 0) && ($v <= 7);
1805 warn "unknown
log level
($k = '$v')\n";
1810 sub generate_std_chains {
1811 my ($ruleset, $options) = @_;
1813 my $loglevel = get_option_log_level($options, 'smurf_log_level');
1815 # same as shorewall smurflog.
1816 my $chain = 'PVEFW-smurflog';
1818 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP
: ", $loglevel) if $loglevel;
1819 push @{$pve_std_chains->{$chain}}, "-j DROP
";
1821 # same as shorewall logflags action.
1822 $loglevel = get_option_log_level($options, 'tcp_flags_log_level');
1823 $chain = 'PVEFW-logflags';
1824 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
1825 push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP
: ", $loglevel) if $loglevel;
1826 push @{$pve_std_chains->{$chain}}, "-j DROP
";
1828 foreach my $chain (keys %$pve_std_chains) {
1829 ruleset_create_chain($ruleset, $chain);
1830 foreach my $rule (@{$pve_std_chains->{$chain}}) {
1832 ruleset_generate_rule($ruleset, $chain, $rule);
1834 ruleset_addrule($ruleset, $chain, $rule);
1840 sub save_pvefw_status {
1843 die "unknown status
'$status' - internal error
"
1844 if $status !~ m/^(stopped|active)$/;
1846 mkdir dirname($pve_fw_status_filename);
1847 PVE::Tools::file_set_contents($pve_fw_status_filename, $status);
1850 sub read_pvefw_status {
1852 my $status = 'unknown';
1854 return 'stopped' if ! -f $pve_fw_status_filename;
1857 $status = PVE::Tools::file_get_contents($pve_fw_status_filename);
1864 # fixme: move to pve-common PVE::ProcFSTools
1865 sub read_proc_net_route {
1866 my $filename = "/proc/net
/route
";
1870 my $fh = IO::File->new ($filename, "r
");
1871 return $res if !$fh;
1873 my $int_to_quad = sub {
1874 return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0);
1877 while (defined(my $line = <$fh>)) {
1878 next if $line =~/^Iface\s+Destination/; # skip head
1879 my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8];
1880 push @{$res->{$iface}}, {
1881 dest => &$int_to_quad(hex($dest)),
1882 gateway => &$int_to_quad(hex($gateway)),
1883 mask => &$int_to_quad(hex($mask)),
1892 sub load_security_groups {
1894 my $groups_conf = {};
1895 my $filename = "/etc/pve
/firewall/groups
.fw
";
1896 if (my $fh = IO::File->new($filename, O_RDONLY)) {
1897 $groups_conf = parse_group_fw_rules($filename, $fh);
1900 return $groups_conf;
1903 sub save_security_groups {
1904 my ($groups_conf) = @_;
1907 my $filename = "/etc/pve
/firewall/groups
.fw
";
1909 foreach my $group (sort keys %{$groups_conf->{rules}}) {
1910 my $rules = $groups_conf->{rules}->{$group};
1911 $raw .= "[group
$group]\n\n";
1913 foreach my $rule (@$rules) {
1914 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
1915 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
1916 $raw .= uc($rule->{type});
1917 $raw .= " " . $rule->{action};
1918 $raw .= " " . ($rule->{source} || '-');
1919 $raw .= " " . ($rule->{dest} || '-');
1920 $raw .= " " . ($rule->{proto} || '-');
1921 $raw .= " " . ($rule->{dport} || '-');
1922 $raw .= " " . ($rule->{sport} || '-');
1923 $raw .= " # " . encode('utf8', $rule->{comment})
1924 if $rule->{comment
} && $rule->{comment
} !~ m/^\s*$/;
1927 die "implement me '$rule->{type}'";
1934 PVE
::Tools
::file_set_contents
($filename, $raw);
1937 sub load_hostfw_conf
{
1939 my $hostfw_conf = {};
1940 my $filename = "/etc/pve/local/host.fw";
1941 if (my $fh = IO
::File-
>new($filename, O_RDONLY
)) {
1942 $hostfw_conf = parse_host_fw_rules
($filename, $fh);
1944 return $hostfw_conf;
1948 my $vmdata = read_local_vm_config
();
1949 my $vmfw_configs = read_vm_firewall_configs
($vmdata);
1951 my $routing_table = read_proc_net_route
();
1953 my $groups_conf = load_security_groups
();
1957 ruleset_create_chain
($ruleset, "PVEFW-INPUT");
1958 ruleset_create_chain
($ruleset, "PVEFW-OUTPUT");
1960 ruleset_create_chain
($ruleset, "PVEFW-FORWARD");
1962 my $hostfw_conf = load_hostfw_conf
();
1963 my $hostfw_options = $hostfw_conf->{options
} || {};
1965 generate_std_chains
($ruleset, $hostfw_options);
1967 my $hostfw_enable = !(defined($hostfw_options->{enable
}) && ($hostfw_options->{enable
} == 0));
1969 enable_host_firewall
($ruleset, $hostfw_conf, $groups_conf) if $hostfw_enable;
1971 my $ips_enable = undef;
1973 # generate firewall rules for QEMU VMs
1974 foreach my $vmid (keys %{$vmdata->{qemu
}}) {
1975 my $conf = $vmdata->{qemu
}->{$vmid};
1976 my $vmfw_conf = $vmfw_configs->{$vmid};
1977 next if !$vmfw_conf;
1978 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
1980 $ips_enable = 1 if $vmfw_conf->{options
}->{ips
};
1982 foreach my $netid (keys %$conf) {
1983 next if $netid !~ m/^net(\d+)$/;
1984 my $net = PVE
::QemuServer
::parse_net
($conf->{$netid});
1986 my $iface = "tap${vmid}i$1";
1988 my $bridge = $net->{bridge
};
1989 next if !$bridge; # fixme: ?
1991 $bridge .= "v$net->{tag}" if $net->{tag
};
1993 generate_bridge_chains
($ruleset, $hostfw_conf, $bridge, $routing_table);
1995 my $macaddr = $net->{macaddr
};
1996 generate_tap_rules_direction
($ruleset, $groups_conf, $iface, $netid, $macaddr,
1997 $vmfw_conf, $vmid, $bridge, 'IN');
1998 generate_tap_rules_direction
($ruleset, $groups_conf, $iface, $netid, $macaddr,
1999 $vmfw_conf, $vmid, $bridge, 'OUT');
2003 # generate firewall rules for OpenVZ containers
2004 foreach my $vmid (keys %{$vmdata->{openvz
}}) {
2005 my $conf = $vmdata->{openvz
}->{$vmid};
2007 my $vmfw_conf = $vmfw_configs->{$vmid};
2008 next if !$vmfw_conf;
2009 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
2011 $ips_enable = 1 if $vmfw_conf->{options
}->{ips
};
2013 if ($conf->{ip_address
} && $conf->{ip_address
}->{value
}) {
2014 my $ip = $conf->{ip_address
}->{value
};
2015 generate_venet_rules_direction
($ruleset, $groups_conf, $vmfw_conf, $vmid, $ip, 'IN');
2016 generate_venet_rules_direction
($ruleset, $groups_conf, $vmfw_conf, $vmid, $ip, 'OUT');
2019 if ($conf->{netif
} && $conf->{netif
}->{value
}) {
2020 my $netif = PVE
::OpenVZ
::parse_netif
($conf->{netif
}->{value
});
2021 foreach my $netid (keys %$netif) {
2022 my $d = $netif->{$netid};
2023 my $bridge = $d->{bridge
};
2025 warn "no bridge device for CT $vmid iface '$netid'\n";
2029 generate_bridge_chains
($ruleset, $hostfw_conf, $bridge, $routing_table);
2031 my $macaddr = $d->{mac
};
2032 my $iface = $d->{host_ifname
};
2033 generate_tap_rules_direction
($ruleset, $groups_conf, $iface, $netid, $macaddr,
2034 $vmfw_conf, $vmid, $bridge, 'IN');
2035 generate_tap_rules_direction
($ruleset, $groups_conf, $iface, $netid, $macaddr,
2036 $vmfw_conf, $vmid, $bridge, 'OUT');
2041 if($hostfw_options->{optimize
}){
2043 my $accept = $ips_enable ?
"PVEFW-IPS" : "ACCEPT";
2044 ruleset_insertrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
2045 ruleset_insertrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP");
2048 # fixme: what log level should we use here?
2049 my $loglevel = get_option_log_level
($hostfw_options, "log_level_out");
2051 # fixme: should we really block inter-bridge traffic?
2053 # always allow traffic from containers?
2054 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN");
2056 # disable interbridge routing
2057 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop");
2058 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop");
2059 ruleset_addlog
($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+");
2060 ruleset_addlog
($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+");
2061 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP");
2062 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP");
2064 return wantarray ?
($ruleset, $hostfw_conf) : $ruleset;
2067 sub get_ruleset_status
{
2068 my ($ruleset, $verbose) = @_;
2070 my $active_chains = iptables_get_chains
();
2072 my $statushash = {};
2074 foreach my $chain (sort keys %$ruleset) {
2075 my $digest = Digest
::SHA-
>new('sha1');
2076 foreach my $cmd (@{$ruleset->{$chain}}) {
2077 $digest->add("$cmd\n");
2079 my $sig = $digest->b64digest;
2080 $statushash->{$chain}->{sig
} = $sig;
2082 my $oldsig = $active_chains->{$chain};
2083 if (!defined($oldsig)) {
2084 $statushash->{$chain}->{action
} = 'create';
2086 if ($oldsig eq $sig) {
2087 $statushash->{$chain}->{action
} = 'exists';
2089 $statushash->{$chain}->{action
} = 'update';
2092 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2093 foreach my $cmd (@{$ruleset->{$chain}}) {
2094 print "\t$cmd\n" if $verbose;
2098 foreach my $chain (sort keys %$active_chains) {
2099 if (!defined($ruleset->{$chain})) {
2100 my $sig = $active_chains->{$chain};
2101 $statushash->{$chain}->{action
} = 'delete';
2102 $statushash->{$chain}->{sig
} = $sig;
2103 print "delete $chain ($sig)\n" if $verbose;
2113 get_ruleset_status
($ruleset, 1);
2116 sub print_sig_rule
{
2117 my ($chain, $sig) = @_;
2119 # We just use this to store a SHA1 checksum used to detect changes
2120 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
2123 sub get_rulset_cmdlist {
2124 my ($ruleset, $verbose) = @_;
2126 my $cmdlist = "*filter
\n"; # we pass this to iptables-restore;
2128 my $statushash = get_ruleset_status($ruleset, $verbose);
2130 # create missing chains first
2131 foreach my $chain (sort keys %$ruleset) {
2132 my $stat = $statushash->{$chain};
2133 die "internal error
" if !$stat;
2134 next if $stat->{action} ne 'create';
2136 $cmdlist .= ":$chain - [0:0]\n";
2139 my $rule = "INPUT
-j PVEFW-INPUT
";
2140 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2141 $cmdlist .= "-A
$rule\n";
2143 $rule = "OUTPUT
-j PVEFW-OUTPUT
";
2144 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2145 $cmdlist .= "-A
$rule\n";
2148 $rule = "FORWARD
-j PVEFW-FORWARD
";
2149 if (!PVE::Firewall::iptables_rule_exist($rule)) {
2150 $cmdlist .= "-A
$rule\n";
2153 foreach my $chain (sort keys %$ruleset) {
2154 my $stat = $statushash->{$chain};
2155 die "internal error
" if !$stat;
2157 if ($stat->{action} eq 'update' || $stat->{action} eq 'create') {
2158 $cmdlist .= "-F
$chain\n";
2159 foreach my $cmd (@{$ruleset->{$chain}}) {
2160 $cmdlist .= "$cmd\n";
2162 $cmdlist .= print_sig_rule($chain, $stat->{sig});
2163 } elsif ($stat->{action} eq 'delete') {
2164 die "internal error
"; # this should not happen
2165 } elsif ($stat->{action} eq 'exists') {
2168 die "internal error
- unknown status
'$stat->{action}'";
2172 foreach my $chain (keys %$statushash) {
2173 next if $statushash->{$chain}->{action} ne 'delete';
2174 $cmdlist .= "-F
$chain\n";
2176 foreach my $chain (keys %$statushash) {
2177 next if $statushash->{$chain}->{action} ne 'delete';
2178 next if $chain eq 'PVEFW-INPUT';
2179 next if $chain eq 'PVEFW-OUTPUT';
2180 next if $chain eq 'PVEFW-FORWARD';
2181 $cmdlist .= "-X
$chain\n";
2184 $cmdlist .= "COMMIT
\n";
2190 my ($ruleset, $hostfw_conf, $verbose) = @_;
2192 enable_bridge_firewall();
2194 update_nf_conntrack_max($hostfw_conf);
2196 my $cmdlist = get_rulset_cmdlist($ruleset, $verbose);
2198 print $cmdlist if $verbose;
2200 iptables_restore_cmdlist($cmdlist);
2202 # test: re-read status and check if everything is up to date
2203 my $statushash = get_ruleset_status($ruleset);
2206 foreach my $chain (sort keys %$ruleset) {
2207 my $stat = $statushash->{$chain};
2208 if ($stat->{action} ne 'exists') {
2209 warn "unable to update chain
'$chain'\n";
2214 die "unable to apply firewall changes
\n" if $errors;
2217 sub update_nf_conntrack_max {
2218 my ($hostfw_conf) = @_;
2220 my $max = 65536; # reasonable default
2222 my $options = $hostfw_conf->{options} || {};
2224 if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) {
2225 $max = $options->{nf_conntrack_max};
2226 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2229 my $filename_nf_conntrack_max = "/proc/sys
/net/nf_conntrack_max
";
2230 my $filename_hashsize = "/sys/module
/nf_conntrack/parameters
/hashsize
";
2232 my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max);
2234 if ($current != $max) {
2235 my $hashsize = int($max/4);
2236 PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize);
2237 PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max);
2242 my ($start, $verbose) = @_;
2245 my $status = read_pvefw_status();
2247 my ($ruleset, $hostfw_conf) = PVE::Firewall::compile();
2249 if ($start || $status eq 'active') {
2251 save_pvefw_status('active') if ($status ne 'active');
2253 apply_ruleset($ruleset, $hostfw_conf, $verbose);
2255 print "Firewall
not active
(status
= $status)\n" if $verbose;