9 use PVE
::Exception
qw(raise raise_param_exc);
10 use PVE
::JSONSchema
qw(register_standard_option get_standard_option);
13 use PVE
::Tools
qw($IPV4RE);
18 use PVE
::Tools
qw(run_command lock_file dir_glob_foreach);
21 my $hostfw_conf_filename = "/etc/pve/local/host.fw";
22 my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw";
24 # dynamically include PVE::QemuServer and PVE::OpenVZ
25 # to avoid dependency problems
28 require PVE
::QemuServer
;
29 $have_qemu_server = 1;
35 $have_pve_manager = 1;
38 PVE
::JSONSchema
::register_format
('IPv4orCIDR', \
&pve_verify_ipv4_or_cidr
);
39 sub pve_verify_ipv4_or_cidr
{
40 my ($cidr, $noerr) = @_;
42 if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
43 return $cidr if Net
::IP-
>new($cidr);
44 return undef if $noerr;
45 die Net
::IP
::Error
() . "\n";
47 return undef if $noerr;
48 die "value does not look like a valid IP address or CIDR network\n";
51 PVE
::JSONSchema
::register_standard_option
('ipset-name', {
52 description
=> "IP set name.",
54 pattern
=> '[A-Za-z][A-Za-z0-9\-\_]+',
59 PVE
::JSONSchema
::register_standard_option
('pve-fw-loglevel' => {
60 description
=> "Log level.",
62 enum
=> ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
66 my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
67 my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
69 PVE
::JSONSchema
::register_standard_option
('pve-security-group-name', {
70 description
=> "Security Group name.",
72 pattern
=> $security_group_name_pattern,
77 my $feature_ipset_nomatch = 0;
79 my (undef, undef, $release) = POSIX
::uname
();
80 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
81 my ($major, $minor) = ($1, $2);
82 $feature_ipset_nomatch = 1 if ($major > 3) ||
83 ($major == 3 && $minor >= 7);
90 my $nodename = PVE
::INotify
::nodename
();
92 my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
93 my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status";
95 my $default_log_level = 'info';
97 my $log_level_hash = {
108 # imported/converted from: /usr/share/shorewall/macro.*
109 my $pve_fw_macros = {
112 { action
=> 'PARAM', proto
=> 'udp', dport
=> '10080' },
113 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10080' },
116 "Auth (identd) traffic",
117 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '113' },
120 "Border Gateway Protocol traffic",
121 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '179' },
124 "BitTorrent traffic for BitTorrent 3.1 and earlier",
125 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6889' },
126 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
129 "BitTorrent traffic for BitTorrent 3.2 and later",
130 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6999' },
131 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
134 "Concurrent Versions System pserver traffic",
135 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2401' },
138 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
139 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1494' },
140 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1604' },
141 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2598' },
144 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
145 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3689' },
146 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3689' },
149 "Distributed Checksum Clearinghouse spam filtering mechanism",
150 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6277' },
153 "Forwarded DHCP traffic (bidirectional)",
154 { action
=> 'PARAM', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
155 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
158 "Domain Name System traffic (upd and tcp)",
159 { action
=> 'PARAM', proto
=> 'udp', dport
=> '53' },
160 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '53' },
163 "Distributed Compiler service",
164 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3632' },
167 "File Transfer Protocol",
168 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '21' },
171 "Finger protocol (RFC 742)",
172 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '79' },
175 "GNUnet secure peer-to-peer networking traffic",
176 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2086' },
177 { action
=> 'PARAM', proto
=> 'udp', dport
=> '2086' },
178 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1080' },
179 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1080' },
182 "Generic Routing Encapsulation tunneling protocol (bidirectional)",
183 { action
=> 'PARAM', proto
=> '47' },
184 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
187 "Git distributed revision control traffic",
188 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9418' },
191 "OpenPGP HTTP keyserver protocol traffic",
192 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '11371' },
195 "Hypertext Transfer Protocol (WWW)",
196 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
199 "Hypertext Transfer Protocol (WWW) over SSL",
200 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
203 "Internet Cache Protocol V2 (Squid) traffic",
204 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3130' },
207 "AOL Instant Messenger traffic",
208 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5190' },
211 "Internet Message Access Protocol",
212 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '143' },
215 "Internet Message Access Protocol over SSL",
216 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '993' },
219 "IPIP capsulation traffic (bidirectional)",
220 { action
=> 'PARAM', proto
=> '94' },
221 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '94' },
224 "IPsec traffic (bidirectional)",
225 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
226 { action
=> 'PARAM', proto
=> '50' },
227 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
228 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
231 "IPsec authentication (AH) traffic (bidirectional)",
232 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
233 { action
=> 'PARAM', proto
=> '51' },
234 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500', sport
=> '500' },
235 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '51' },
238 "IPsec traffic and Nat-Traversal (bidirectional)",
239 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500' },
240 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4500' },
241 { action
=> 'PARAM', proto
=> '50' },
242 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '500' },
243 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '4500' },
244 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '50' },
247 "Internet Relay Chat traffic",
248 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6667' },
251 "HP Jetdirect printing",
252 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9100' },
255 "Layer 2 Tunneling Protocol traffic",
256 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1701' },
257 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1701' },
260 "Lightweight Directory Access Protocol traffic",
261 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '389' },
264 "Secure Lightweight Directory Access Protocol traffic",
265 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '636' },
268 "Microsoft Notification Protocol",
269 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1863' },
272 "Microsoft SQL Server",
273 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1433' },
276 "Mail traffic (SMTP, SMTPS, Submission)",
277 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
278 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
279 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
282 "Munin networked resource monitoring traffic",
283 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4949' },
287 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3306' },
290 "NNTP traffic (Usenet).",
291 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '119' },
294 "Encrypted NNTP traffic (Usenet)",
295 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '563' },
298 "Network Time Protocol (ntpd)",
299 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
302 "Bi-directional NTP (for NTP peers)",
303 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
304 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '123' },
307 "OSPF multicast traffic",
308 { action
=> 'PARAM', proto
=> '89' },
312 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1194' },
315 "Symantec PCAnywere (tm)",
316 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5632' },
317 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5631' },
321 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '110' },
324 "Encrypted POP3 traffic",
325 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '995' },
328 "Point-to-Point Tunneling Protocol",
329 { action
=> 'PARAM', proto
=> '47' },
330 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> '47' },
331 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1723' },
335 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
339 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5432' },
342 "Line Printer protocol printing",
343 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '515' },
346 "Microsoft Remote Desktop Protocol traffic",
347 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3389' },
350 "Routing Information Protocol (bidirectional)",
351 { action
=> 'PARAM', proto
=> 'udp', dport
=> '520' },
352 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '520' },
355 "BIND remote management protocol",
356 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '953' },
359 "Razor Antispam System",
360 { action
=> 'ACCEPT', proto
=> 'tcp', dport
=> '2703' },
363 "Remote time retrieval (rdate)",
364 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
368 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '873' },
371 "SANE network scanning",
372 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6566' },
375 "Microsoft SMB traffic",
376 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
377 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
378 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
379 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
382 "Microsoft SMB traffic (bidirectional)",
383 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
384 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
385 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
386 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
387 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '135,445' },
388 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '137:139' },
389 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
390 { action
=> 'PARAM', source
=> 'DEST', dest
=> 'SOURCE', proto
=> 'tcp', dport
=> '135,139,445' },
393 "Samba Web Administration Tool",
394 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '901' },
397 "Simple Mail Transfer Protocol",
398 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
401 "Encrypted Simple Mail Transfer Protocol",
402 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
405 "Simple Network Management Protocol",
406 { action
=> 'PARAM', proto
=> 'udp', dport
=> '161:162' },
407 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '161' },
410 "Spam Assassin SPAMD traffic",
411 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '783' },
414 "Secure shell traffic",
415 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '22' },
418 "Subversion server (svnserve)",
419 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3690' },
422 "SixXS IPv6 Deployment and Tunnel Broker",
423 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3874' },
424 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3740' },
425 { action
=> 'PARAM', proto
=> '41' },
426 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5072,8374' },
429 "Squid web proxy traffic",
430 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3128' },
433 "Mail message submission traffic",
434 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
437 "Syslog protocol (RFC 5424) traffic",
438 { action
=> 'PARAM', proto
=> 'udp', dport
=> '514' },
439 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '514' },
442 "Trivial File Transfer Protocol traffic",
443 { action
=> 'PARAM', proto
=> 'udp', dport
=> '69' },
447 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '23' },
451 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '992' },
454 "RFC 868 Time protocol",
455 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
458 "Traceroute (for up to 30 hops) traffic",
459 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
460 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
463 "VNC traffic for VNC display's 0 - 9",
464 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5900:5909' },
467 "VNC traffic from Vncservers to Vncviewers in listen mode",
468 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5500' },
471 "WWW traffic (HTTP and HTTPS)",
472 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
473 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
476 "Web Cache/Proxy traffic (port 8080)",
477 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '8080' },
481 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10000' },
484 "Whois (nicname, RFC 3912) traffic",
485 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '43' },
489 my $pve_fw_parsed_macros;
490 my $pve_fw_macro_descr;
491 my $pve_fw_preferred_macro_names = {};
493 my $pve_std_chains = {
494 'PVEFW-SET-ACCEPT-MARK' => [
495 "-j MARK --set-mark 1",
497 'PVEFW-DropBroadcast' => [
498 # same as shorewall 'Broadcast'
499 # simply DROP BROADCAST/MULTICAST/ANYCAST
500 # we can use this to reduce logging
501 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
502 { action
=> 'DROP', dsttype
=> 'MULTICAST' },
503 { action
=> 'DROP', dsttype
=> 'ANYCAST' },
504 { action
=> 'DROP', dest
=> '224.0.0.0/4' },
507 # same as shorewall 'reject'
508 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
509 { action
=> 'DROP', source
=> '224.0.0.0/4' },
510 { action
=> 'DROP', proto
=> 'icmp' },
511 "-p tcp -j REJECT --reject-with tcp-reset",
512 "-p udp -j REJECT --reject-with icmp-port-unreachable",
513 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
514 "-j REJECT --reject-with icmp-host-prohibited",
517 # same as shorewall 'Drop', which is equal to DROP,
518 # but REJECT/DROP some packages to reduce logging,
519 # and ACCEPT critical ICMP types
520 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
521 # we are not interested in BROADCAST/MULTICAST/ANYCAST
522 { action
=> 'PVEFW-DropBroadcast' },
523 # ACCEPT critical ICMP types
524 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
525 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
526 # Drop packets with INVALID state
527 "-m conntrack --ctstate INVALID -j DROP",
528 # Drop Microsoft SMB noise
529 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
530 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
531 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
532 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
533 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
534 # Drop new/NotSyn traffic so that it doesn't get logged
535 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
537 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
540 # same as shorewall 'Reject', which is equal to Reject,
541 # but REJECT/DROP some packages to reduce logging,
542 # and ACCEPT critical ICMP types
543 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
544 # we are not interested in BROADCAST/MULTICAST/ANYCAST
545 { action
=> 'PVEFW-DropBroadcast' },
546 # ACCEPT critical ICMP types
547 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
548 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
549 # Drop packets with INVALID state
550 "-m conntrack --ctstate INVALID -j DROP",
551 # Drop Microsoft SMB noise
552 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
553 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
554 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
555 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
556 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
557 # Drop new/NotSyn traffic so that it doesn't get logged
558 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
560 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
562 'PVEFW-tcpflags' => [
563 # same as shorewall tcpflags action.
564 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
565 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
566 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
567 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
568 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
569 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
572 # same as shorewall smurfs action
573 # Filter packets for smurfs (packets with a broadcast address as the source).
574 "-s 0.0.0.0/32 -j RETURN",
575 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
576 "-s 224.0.0.0/4 -g PVEFW-smurflog",
580 # iptables -p icmp -h
581 my $icmp_type_names = {
584 'destination-unreachable' => 1,
585 'network-unreachable' => 1,
586 'host-unreachable' => 1,
587 'protocol-unreachable' => 1,
588 'port-unreachable' => 1,
589 'fragmentation-needed' => 1,
590 'source-route-failed' => 1,
591 'network-unknown' => 1,
593 'network-prohibited' => 1,
594 'host-prohibited' => 1,
595 'TOS-network-unreachable' => 1,
596 'TOS-host-unreachable' => 1,
597 'communication-prohibited' => 1,
598 'host-precedence-violation' => 1,
599 'precedence-cutoff' => 1,
600 'source-quench' => 1,
602 'network-redirect' => 1,
603 'host-redirect' => 1,
604 'TOS-network-redirect' => 1,
605 'TOS-host-redirect' => 1,
607 'router-advertisement' => 1,
608 'router-solicitation' => 1,
609 'time-exceeded' => 1,
610 'ttl-zero-during-transit' => 1,
611 'ttl-zero-during-reassembly' => 1,
612 'parameter-problem' => 1,
613 'ip-header-bad' => 1,
614 'required-option-missing' => 1,
615 'timestamp-request' => 1,
616 'timestamp-reply' => 1,
617 'address-mask-request' => 1,
618 'address-mask-reply' => 1,
621 sub init_firewall_macros
{
623 $pve_fw_parsed_macros = {};
625 foreach my $k (keys %$pve_fw_macros) {
626 my $lc_name = lc($k);
627 my $macro = $pve_fw_macros->{$k};
628 if (!ref($macro->[0])) {
629 $pve_fw_macro_descr->{$k} = shift @$macro;
631 $pve_fw_preferred_macro_names->{$lc_name} = $k;
632 $pve_fw_parsed_macros->{$k} = $macro;
636 init_firewall_macros
();
639 return wantarray ?
($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
644 sub get_etc_services
{
646 return $etc_services if $etc_services;
648 my $filename = "/etc/services";
650 my $fh = IO
::File-
>new($filename, O_RDONLY
);
652 warn "unable to read '$filename' - $!\n";
658 while (my $line = <$fh>) {
660 next if $line =~m/^#/;
661 next if ($line =~m/^\s*$/);
663 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
664 $services->{byid
}->{$2}->{name
} = $1;
665 $services->{byid
}->{$2}->{port
} = $2;
666 $services->{byid
}->{$2}->{$3} = 1;
667 $services->{byname
}->{$1} = $services->{byid
}->{$2};
673 $etc_services = $services;
676 return $etc_services;
681 sub get_etc_protocols
{
682 return $etc_protocols if $etc_protocols;
684 my $filename = "/etc/protocols";
686 my $fh = IO
::File-
>new($filename, O_RDONLY
);
688 warn "unable to read '$filename' - $!\n";
694 while (my $line = <$fh>) {
696 next if $line =~m/^#/;
697 next if ($line =~m/^\s*$/);
699 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
700 $protocols->{byid
}->{$2}->{name
} = $1;
701 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
707 $etc_protocols = $protocols;
709 return $etc_protocols;
712 sub parse_address_list
{
715 return if $str =~ m/^(\+)(\S+)$/; # ipset ref
716 return if $str =~ m/^${ip_alias_pattern}$/;
720 foreach my $elem (split(/,/, $str)) {
722 if (!Net
::IP-
>new($elem)) {
723 my $err = Net
::IP
::Error
();
724 die "invalid IP address: $err\n";
726 $iprange = 1 if $elem =~ m/-/;
729 die "you can use a range in a list\n" if $iprange && $count > 1;
732 sub parse_port_name_number_or_range
{
735 my $services = PVE
::Firewall
::get_etc_services
();
739 foreach my $item (split(/,/, $str)) {
741 if ($item =~ m/^(\d+):(\d+)$/) {
742 my ($port1, $port2) = ($1, $2);
743 die "invalid port '$port1'\n" if $port1 > 65535;
744 die "invalid port '$port2'\n" if $port2 > 65535;
745 } elsif ($item =~ m/^(\d+)$/) {
747 die "invalid port '$port'\n" if $port > 65535;
749 if ($icmp_type_names->{$item}) {
752 die "invalid port '$item'\n" if !$services->{byname
}->{$item};
757 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
762 PVE
::JSONSchema
::register_format
('pve-fw-port-spec', \
&pve_fw_verify_port_spec
);
763 sub pve_fw_verify_port_spec
{
766 parse_port_name_number_or_range
($portstr);
771 PVE
::JSONSchema
::register_format
('pve-fw-v4addr-spec', \
&pve_fw_verify_v4addr_spec
);
772 sub pve_fw_verify_v4addr_spec
{
775 parse_address_list
($list);
780 PVE
::JSONSchema
::register_format
('pve-fw-protocol-spec', \
&pve_fw_verify_protocol_spec
);
781 sub pve_fw_verify_protocol_spec
{
784 my $protocols = get_etc_protocols
();
786 die "unknown protocol '$proto'\n" if $proto &&
787 !(defined($protocols->{byname
}->{$proto}) ||
788 defined($protocols->{byid
}->{$proto}));
794 # helper function for API
796 sub copy_opject_with_digest
{
799 my $sha = Digest
::SHA-
>new('sha1');
802 foreach my $k (sort keys %$object) {
803 my $v = $object->{$k};
804 next if !defined($v);
806 $sha->add($k, ':', $v, "\n");
809 my $digest = $sha->b64digest;
811 $res->{digest
} = $digest;
813 return wantarray ?
($res, $digest) : $res;
816 sub copy_list_with_digest
{
819 my $sha = Digest
::SHA-
>new('sha1');
822 foreach my $entry (@$list) {
824 foreach my $k (sort keys %$entry) {
825 my $v = $entry->{$k};
826 next if !defined($v);
828 $sha->add($k, ':', $v, "\n");
833 my $digest = $sha->b64digest;
835 foreach my $entry (@$res) {
836 $entry->{digest
} = $digest;
839 return wantarray ?
($res, $digest) : $res;
842 my $rule_properties = {
844 description
=> "Update rule at position <pos>.",
849 digest
=> get_standard_option
('pve-config-digest'),
853 enum
=> ['in', 'out', 'group'],
856 description
=> "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
859 pattern
=> $security_group_name_pattern,
868 iface
=> get_standard_option
('pve-iface', { optional
=> 1 }),
870 type
=> 'string', format
=> 'pve-fw-v4addr-spec',
874 type
=> 'string', format
=> 'pve-fw-v4addr-spec',
878 type
=> 'string', format
=> 'pve-fw-protocol-spec',
886 type
=> 'string', format
=> 'pve-fw-port-spec',
890 type
=> 'string', format
=> 'pve-fw-port-spec',
899 sub add_rule_properties
{
900 my ($properties) = @_;
902 foreach my $k (keys %$rule_properties) {
903 my $h = $rule_properties->{$k};
904 # copy data, so that we can modify later without side effects
905 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
911 sub delete_rule_properties
{
912 my ($rule, $delete_str) = @_;
914 foreach my $opt (PVE
::Tools
::split_list
($delete_str)) {
915 raise_param_exc
({ 'delete' => "no such property ('$opt')"})
916 if !defined($rule_properties->{$opt});
917 raise_param_exc
({ 'delete' => "unable to delete required property '$opt'"})
918 if $opt eq 'type' || $opt eq 'action';
919 delete $rule->{$opt};
925 my $apply_macro = sub {
926 my ($macro_name, $param, $verify) = @_;
928 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
929 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
933 foreach my $templ (@$macro_rules) {
936 foreach my $k (keys %$templ) {
937 my $v = $templ->{$k};
940 $param_used->{$k} = 1;
941 } elsif ($v eq 'DEST') {
943 $param_used->{dest
} = 1;
944 } elsif ($v eq 'SOURCE') {
945 $v = $param->{source
};
946 $param_used->{source
} = 1;
950 my $msg = "missing parameter '$k' in macro '$macro_name'";
951 raise_param_exc
({ macro => $msg }) if $verify;
956 foreach my $k (keys %$param) {
957 next if $k eq 'macro';
958 next if !defined($param->{$k});
959 next if $param_used->{$k};
960 if (defined($rule->{$k})) {
961 if ($rule->{$k} ne $param->{$k}) {
962 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
963 raise_param_exc
({ $k => $msg }) if $verify;
967 $rule->{$k} = $param->{$k};
977 my ($rule, $allow_groups) = @_;
979 my $type = $rule->{type
};
981 raise_param_exc
({ type
=> "missing property"}) if !$type;
982 raise_param_exc
({ action
=> "missing property"}) if !$rule->{action
};
984 if ($type eq 'in' || $type eq 'out') {
985 raise_param_exc
({ action
=> "unknown action '$rule->{action}'"})
986 if $rule->{action
} !~ m/^(ACCEPT|DROP|REJECT)$/;
987 } elsif ($type eq 'group') {
988 raise_param_exc
({ type
=> "security groups not allowed"})
990 raise_param_exc
({ action
=> "invalid characters in security group name"})
991 if $rule->{action
} !~ m/^${security_group_name_pattern}$/;
993 raise_param_exc
({ type
=> "unknown rule type '$type'"});
996 # fixme: verify $rule->{iface}?
998 if ($rule->{macro}) {
999 my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})};
1000 raise_param_exc
({ macro => "unknown macro '$rule->{macro}'"}) if !$preferred_name;
1001 $rule->{macro} = $preferred_name;
1004 if ($rule->{dport
}) {
1005 eval { parse_port_name_number_or_range
($rule->{dport
}); };
1006 raise_param_exc
({ dport
=> $@ }) if $@;
1009 if ($rule->{sport
}) {
1010 eval { parse_port_name_number_or_range
($rule->{sport
}); };
1011 raise_param_exc
({ sport
=> $@ }) if $@;
1014 if ($rule->{source
}) {
1015 eval { parse_address_list
($rule->{source
}); };
1016 raise_param_exc
({ source
=> $@ }) if $@;
1019 if ($rule->{dest
}) {
1020 eval { parse_address_list
($rule->{dest
}); };
1021 raise_param_exc
({ dest
=> $@ }) if $@;
1024 if ($rule->{macro}) {
1025 &$apply_macro($rule->{macro}, $rule, 1);
1031 sub copy_rule_data
{
1032 my ($rule, $param) = @_;
1034 foreach my $k (keys %$rule_properties) {
1035 if (defined(my $v = $param->{$k})) {
1036 if ($v eq '' || $v eq '-') {
1052 my $bridge_firewall_enabled = 0;
1054 sub enable_bridge_firewall
{
1056 return if $bridge_firewall_enabled; # only once
1058 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1059 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
1061 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1062 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/ipv4/tcp_syncookies", "1");
1064 $bridge_firewall_enabled = 1;
1067 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
1069 sub iptables_restore_cmdlist
{
1072 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist);
1075 sub ipset_restore_cmdlist
{
1078 run_command
("/usr/sbin/ipset restore", input
=> $cmdlist);
1081 sub iptables_get_chains
{
1085 # check what chains we want to track
1086 my $is_pvefw_chain = sub {
1089 return 1 if $name =~ m/^PVEFW-\S+$/;
1091 return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/;
1093 return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable
1095 return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/;
1097 return 1 if $name =~ m/^vmbr\d+(v\d+)?-(:?FW|IN|OUT|IPS)$/;
1098 return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/;
1110 return if $line =~ m/^#/;
1111 return if $line =~ m/^\s*$/;
1113 if ($line =~ m/^\*(\S+)$/) {
1118 return if $table ne 'filter';
1120 if ($line =~ m/^:(\S+)\s/) {
1122 return if !&$is_pvefw_chain($chain);
1123 $res->{$chain} = "unknown";
1124 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
1125 my ($chain, $sig) = ($1, $2);
1126 return if !&$is_pvefw_chain($chain);
1127 $res->{$chain} = $sig;
1128 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1131 # simply ignore the rest
1136 run_command
("/sbin/iptables-save", outfunc
=> $parser);
1138 return wantarray ?
($res, $hooks) : $res;
1141 sub iptables_chain_digest
{
1143 my $digest = Digest
::SHA-
>new('sha1');
1144 foreach my $rule (@$rules) { # order is important
1145 $digest->add($rule);
1147 return $digest->b64digest;
1150 sub ipset_chain_digest
{
1153 my $digest = Digest
::SHA-
>new('sha1');
1154 foreach my $rule (sort @$rules) { # note: sorted
1155 $digest->add($rule);
1157 return $digest->b64digest;
1160 sub ipset_get_chains
{
1168 return if $line =~ m/^#/;
1169 return if $line =~ m/^\s*$/;
1170 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
1172 $line =~ s/\s+$//; # delete trailing white space
1173 push @{$chains->{$chain}}, $line;
1175 # simply ignore the rest
1180 run_command
("/usr/sbin/ipset save", outfunc
=> $parser);
1182 # compute digest for each chain
1183 foreach my $chain (keys %$chains) {
1184 $res->{$chain} = ipset_chain_digest
($chains->{$chain});
1190 sub ruleset_generate_cmdstr
{
1191 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
1193 return if defined($rule->{enable
}) && !$rule->{enable
};
1195 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1197 my $nbdport = defined($rule->{dport
}) ? parse_port_name_number_or_range
($rule->{dport
}) : 0;
1198 my $nbsport = defined($rule->{sport
}) ? parse_port_name_number_or_range
($rule->{sport
}) : 0;
1202 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in
};
1203 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out
};
1205 my $source = $rule->{source
};
1206 my $dest = $rule->{dest
};
1209 if ($source =~ m/^\+/) {
1210 if ($source =~ m/^\+(${security_group_name_pattern})$/) {
1211 die "no such ipset '$1'\n" if !$cluster_conf->{ipset
}->{$1};
1212 push @cmd, "-m set --match-set PVEFW-$1 src";
1214 die "invalid security group name '$source'\n";
1216 } elsif ($source =~ m/^${ip_alias_pattern}$/){
1217 die "no such alias $source\n" if !$cluster_conf->{aliases
}->{$source};
1218 push @cmd, "-s $cluster_conf->{aliases}->{$source}";
1220 } elsif ($source =~ m/\-/){
1221 push @cmd, "-m iprange --src-range $source";
1224 push @cmd, "-s $source";
1229 if ($dest =~ m/^\+/) {
1230 if ($dest =~ m/^\+(${security_group_name_pattern})$/) {
1231 die "no such ipset '$1'\n" if !$cluster_conf->{ipset
}->{$1};
1232 push @cmd, "-m set --match-set PVEFW-$1 dst";
1234 die "invalid security group name '$dest'\n";
1236 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
1237 die "no such alias $dest" if !$cluster_conf->{aliases
}->{$dest};
1238 push @cmd, "-d $cluster_conf->{aliases}->{$dest}";
1240 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
1241 push @cmd, "-m iprange --dst-range $dest";
1244 push @cmd, "-d $dest";
1248 if ($rule->{proto
}) {
1249 push @cmd, "-p $rule->{proto}";
1252 $multiport++ if $nbdport > 1;
1253 $multiport++ if $nbsport > 1;
1255 push @cmd, "--match multiport" if $multiport;
1257 die "multiport: option '--sports' cannot be used together with '--dports'\n"
1258 if ($multiport == 2) && ($rule->{dport
} ne $rule->{sport
});
1260 if ($rule->{dport
}) {
1261 if ($rule->{proto
} && $rule->{proto
} eq 'icmp') {
1262 # Note: we use dport to store --icmp-type
1263 die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport
}});
1264 push @cmd, "-m icmp --icmp-type $rule->{dport}";
1267 if ($multiport == 2) {
1268 push @cmd, "--ports $rule->{dport}";
1270 push @cmd, "--dports $rule->{dport}";
1273 push @cmd, "--dport $rule->{dport}";
1278 if ($rule->{sport
}) {
1280 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
1282 push @cmd, "--sport $rule->{sport}";
1285 } elsif ($rule->{dport
} || $rule->{sport
}) {
1286 warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport
};
1287 warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport
};
1290 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
1292 if (my $action = $rule->{action
}) {
1293 $action = $actions->{$action} if defined($actions->{$action});
1294 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
1295 push @cmd, $goto ?
"-g $action" : "-j $action";
1298 return scalar(@cmd) ?
join(' ', @cmd) : undef;
1301 sub ruleset_generate_rule
{
1302 my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_;
1306 if ($rule->{macro}) {
1307 $rules = &$apply_macro($rule->{macro}, $rule);
1312 # update all or nothing
1315 foreach my $tmp (@$rules) {
1316 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) {
1317 push @cmds, $cmdstr;
1321 foreach my $cmdstr (@cmds) {
1322 ruleset_addrule
($ruleset, $chain, $cmdstr);
1326 sub ruleset_generate_rule_insert
{
1327 my ($ruleset, $chain, $rule, $actions, $goto) = @_;
1329 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1331 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $rule, $actions, $goto)) {
1332 ruleset_insertrule
($ruleset, $chain, $cmdstr);
1336 sub ruleset_create_chain
{
1337 my ($ruleset, $chain) = @_;
1339 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
1340 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
1342 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1344 $ruleset->{$chain} = [];
1347 sub ruleset_chain_exist
{
1348 my ($ruleset, $chain) = @_;
1350 return $ruleset->{$chain} ?
1 : undef;
1353 sub ruleset_addrule
{
1354 my ($ruleset, $chain, $rule) = @_;
1356 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1358 push @{$ruleset->{$chain}}, "-A $chain $rule";
1361 sub ruleset_insertrule
{
1362 my ($ruleset, $chain, $rule) = @_;
1364 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1366 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1369 sub get_log_rule_base
{
1370 my ($chain, $vmid, $msg, $loglevel) = @_;
1372 die "internal error - no log level" if !defined($loglevel);
1374 $vmid = 0 if !defined($vmid);
1376 # Note: we use special format for prefix to pass further
1377 # info to log daemon (VMID, LOGVELEL and CHAIN)
1379 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1382 sub ruleset_addlog {
1383 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1385 return if !defined($loglevel);
1387 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1389 $logrule = "$rule $logrule" if defined($rule);
1391 ruleset_addrule($ruleset, $chain, $logrule)
1394 sub generate_bridge_chains {
1395 my ($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config) = @_;
1397 my $options = $hostfw_conf->{options} || {};
1399 die "error
: detected direct route to bridge
'$bridge'\n"
1400 if !$options->{allow_bridge_route} && $routing_table->{$bridge};
1402 if (!ruleset_chain_exist($ruleset, "$bridge-FW
")) {
1403 ruleset_create_chain($ruleset, "$bridge-FW
");
1404 ruleset_addrule($ruleset, "PVEFW-FORWARD
", "-o
$bridge -m physdev
--physdev-is-out
-j
$bridge-FW
");
1405 ruleset_addrule($ruleset, "PVEFW-FORWARD
", "-i
$bridge -m physdev
--physdev-is-in
-j
$bridge-FW
");
1408 if (!ruleset_chain_exist($ruleset, "$bridge-OUT
")) {
1409 ruleset_create_chain($ruleset, "$bridge-OUT
");
1411 if($options->{optimize}){
1412 foreach my $interface (@{$bridges_config->{$bridge}}) {
1413 ruleset_addrule($ruleset, "$bridge-OUT
", "-m physdev
--physdev-is-bridged
--physdev-in
$interface -g PVEFW-SET-ACCEPT-MARK
");
1417 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-in
-j
$bridge-OUT
");
1418 ruleset_insertrule($ruleset, "PVEFW-INPUT
", "-i
$bridge -m physdev
--physdev-is-in
-j
$bridge-OUT
");
1421 if (!ruleset_chain_exist($ruleset, "$bridge-IN
")) {
1422 ruleset_create_chain($ruleset, "$bridge-IN
");
1424 if($options->{optimize}){
1425 foreach my $interface (@{$bridges_config->{$bridge}}) {
1426 ruleset_addrule($ruleset, "$bridge-IN
", "-m physdev
--physdev-is-bridged
--physdev-out
$interface -j ACCEPT
");
1430 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-out
-j
$bridge-IN
");
1431 ruleset_addrule($ruleset, "$bridge-FW
", "-m mark
--mark
1 -j ACCEPT
");
1432 # accept traffic to unmanaged bridge ports
1433 ruleset_addrule($ruleset, "$bridge-FW
", "-m physdev
--physdev-is-out
-j ACCEPT
");
1437 sub ruleset_add_chain_policy {
1438 my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
1440 if ($policy eq 'ACCEPT') {
1442 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
1443 { ACCEPT => $accept_action});
1445 } elsif ($policy eq 'DROP') {
1447 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop
");
1449 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1451 ruleset_addrule($ruleset, $chain, "-j DROP
");
1452 } elsif ($policy eq 'REJECT') {
1453 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject
");
1455 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1457 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject
");
1460 die "internal error
: unknown policy
'$policy'";
1464 sub ruleset_create_vm_chain {
1465 my ($ruleset, $chain, $options, $host_options, $macaddr, $direction) = @_;
1467 ruleset_create_chain($ruleset, $chain);
1468 my $accept = generate_nfqueue($options);
1470 if (!(defined($host_options->{nosmurfs}) && $host_options->{nosmurfs} == 0)) {
1471 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1474 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
1475 if ($direction eq 'OUT') {
1476 ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
1477 proto => 'udp', sport => 68, dport => 67 });
1479 ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
1480 proto => 'udp', sport => 67, dport => 68 });
1484 if ($host_options->{tcpflags}) {
1485 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1488 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1489 if ($direction eq 'OUT') {
1490 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-g PVEFW-SET-ACCEPT-MARK
");
1492 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j
$accept");
1495 if ($direction eq 'OUT') {
1496 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1497 ruleset_addrule($ruleset, $chain, "-m mac
! --mac-source
$macaddr -j DROP
");
1499 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1503 sub ruleset_generate_vm_rules {
1504 my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_;
1506 my $lc_direction = lc($direction);
1508 my $in_accept = generate_nfqueue($options);
1510 foreach my $rule (@$rules) {
1511 next if $rule->{iface} && $rule->{iface} ne $netid;
1512 next if !$rule->{enable};
1513 if ($rule->{type} eq 'group') {
1514 my $group_chain = "GROUP-
$rule->{action
}-$direction";
1515 if(!ruleset_chain_exist($ruleset, $group_chain)){
1516 generate_group_rules($ruleset, $cluster_conf, $rule->{action});
1518 ruleset_addrule($ruleset, $chain, "-j
$group_chain");
1519 if ($direction eq 'OUT'){
1520 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j RETURN
");
1522 my $accept = generate_nfqueue($options);
1523 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j
$accept");
1527 next if $rule->{type} ne $lc_direction;
1528 if ($direction eq 'OUT') {
1529 ruleset_generate_rule($ruleset, $chain, $rule,
1530 { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" }, undef, $cluster_conf);
1532 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject
" }, undef, $cluster_conf);
1538 sub generate_nfqueue {
1541 if ($options->{ips}) {
1542 my $action = "NFQUEUE
";
1543 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
1544 if (defined($3) && defined($1)) {
1545 $action .= " --queue-balance
$1:$3";
1546 } elsif (defined($1)) {
1547 $action .= " --queue-num
$1";
1550 $action .= " --queue-bypass
" if $feature_ipset_nomatch; #need kernel 3.10
1557 sub ruleset_generate_vm_ipsrules {
1558 my ($ruleset, $options, $direction, $iface, $bridge) = @_;
1560 if ($options->{ips} && $direction eq 'IN') {
1561 my $nfqueue = generate_nfqueue($options);
1563 if (!ruleset_chain_exist($ruleset, "$bridge-IPS
")) {
1564 ruleset_create_chain($ruleset, "PVEFW-IPS
");
1567 if (!ruleset_chain_exist($ruleset, "$bridge-IPS
")) {
1568 ruleset_create_chain($ruleset, "$bridge-IPS
");
1569 ruleset_insertrule($ruleset, "PVEFW-IPS
", "-o
$bridge -m physdev
--physdev-is-out
-j
$bridge-IPS
");
1572 ruleset_addrule($ruleset, "$bridge-IPS
", "-m physdev
--physdev-out
$iface --physdev-is-bridged
-j
$nfqueue");
1576 sub generate_venet_rules_direction {
1577 my ($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, $direction) = @_;
1579 parse_address_list($ip); # make sure we have a valid $ip list
1581 my $lc_direction = lc($direction);
1583 my $rules = $vmfw_conf->{rules};
1585 my $options = $vmfw_conf->{options};
1586 my $hostfw_options = $vmfw_conf->{options};
1587 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
1589 my $chain = "venet0-
$vmid-$direction";
1591 ruleset_create_vm_chain($ruleset, $chain, $options, $hostfw_options, undef, $direction);
1593 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction);
1598 if ($direction eq 'OUT') {
1599 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1601 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1604 my $accept = generate_nfqueue($options);
1605 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
1606 ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
1608 # plug into FORWARD, INPUT and OUTPUT chain
1609 if ($direction eq 'OUT') {
1610 ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD
", {
1613 iface_in => 'venet0'});
1615 ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT
", {
1618 iface_in => 'venet0'});
1620 ruleset_generate_rule($ruleset, "PVEFW-FORWARD
", {
1623 iface_out => 'venet0'});
1625 ruleset_generate_rule($ruleset, "PVEFW-OUTPUT
", {
1628 iface_out => 'venet0'});
1632 sub generate_tap_rules_direction {
1633 my ($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_;
1635 my $lc_direction = lc($direction);
1637 my $rules = $vmfw_conf->{rules};
1639 my $options = $vmfw_conf->{options};
1640 my $hostfw_options = $hostfw_conf->{options};
1641 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
1643 my $tapchain = "$iface-$direction";
1645 ruleset_create_vm_chain($ruleset, $tapchain, $options, $hostfw_options, $macaddr, $direction);
1647 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options);
1649 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge);
1654 if ($direction eq 'OUT') {
1655 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
1657 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
1660 my $accept = generate_nfqueue($options);
1661 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
1662 ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
1664 # plug the tap chain to bridge chain
1665 if ($direction eq 'IN') {
1666 ruleset_addrule($ruleset, "$bridge-IN
",
1667 "-m physdev
--physdev-is-bridged
--physdev-out
$iface -j
$tapchain");
1669 ruleset_addrule($ruleset, "$bridge-OUT
",
1670 "-m physdev
--physdev-in
$iface -j
$tapchain");
1674 sub enable_host_firewall {
1675 my ($ruleset, $hostfw_conf, $cluster_conf) = @_;
1677 my $options = $hostfw_conf->{options};
1678 my $cluster_options = $cluster_conf->{options};
1679 my $rules = $hostfw_conf->{rules};
1680 my $cluster_rules = $cluster_conf->{rules};
1682 # host inbound firewall
1683 my $chain = "PVEFW-HOST-IN
";
1684 ruleset_create_chain($ruleset, $chain);
1686 my $loglevel = get_option_log_level($options, "log_level_in
");
1688 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1689 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1692 if ($options->{tcpflags}) {
1693 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1696 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1697 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j ACCEPT
");
1698 ruleset_addrule($ruleset, $chain, "-i lo
-j ACCEPT
");
1699 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
-j ACCEPT
");
1700 ruleset_addrule($ruleset, $chain, "-p udp
-m conntrack
--ctstate NEW
--dport
5404:5405 -j ACCEPT
");
1701 ruleset_addrule($ruleset, $chain, "-p udp
-m udp
--dport
9000 -j ACCEPT
"); #corosync
1703 # we use RETURN because we need to check also tap rules
1704 my $accept_action = 'RETURN';
1706 # add host rules first, so that cluster wide rules can be overwritten
1707 foreach my $rule (@$rules, @$cluster_rules) {
1708 next if $rule->{type} ne 'in';
1709 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" }, undef, $cluster_conf);
1712 # implement input policy
1713 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
1714 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
1716 # host outbound firewall
1717 $chain = "PVEFW-HOST-OUT
";
1718 ruleset_create_chain($ruleset, $chain);
1720 $loglevel = get_option_log_level($options, "log_level_out
");
1722 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1723 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j ACCEPT
");
1724 ruleset_addrule($ruleset, $chain, "-o lo
-j ACCEPT
");
1725 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
-j ACCEPT
");
1726 ruleset_addrule($ruleset, $chain, "-p udp
-m conntrack
--ctstate NEW
--dport
5404:5405 -j ACCEPT
");
1727 ruleset_addrule($ruleset, $chain, "-p udp
-m udp
--dport
9000 -j ACCEPT
"); #corosync
1729 # we use RETURN because we may want to check other thigs later
1730 $accept_action = 'RETURN';
1732 # add host rules first, so that cluster wide rules can be overwritten
1733 foreach my $rule (@$rules, @$cluster_rules) {
1734 next if $rule->{type} ne 'out';
1735 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" }, undef, $cluster_conf);
1738 # implement output policy
1739 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
1740 ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
1742 ruleset_addrule($ruleset, "PVEFW-OUTPUT
", "-j PVEFW-HOST-OUT
");
1743 ruleset_addrule($ruleset, "PVEFW-INPUT
", "-j PVEFW-HOST-IN
");
1746 sub generate_group_rules {
1747 my ($ruleset, $cluster_conf, $group) = @_;
1748 die "no such security group
'$group'\n" if !$cluster_conf->{groups}->{$group};
1750 my $rules = $cluster_conf->{groups}->{$group};
1752 my $chain = "GROUP-
${group
}-IN
";
1754 ruleset_create_chain($ruleset, $chain);
1755 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1757 foreach my $rule (@$rules) {
1758 next if $rule->{type} ne 'in';
1759 ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" }, undef, $cluster_conf);
1762 $chain = "GROUP-
${group
}-OUT
";
1764 ruleset_create_chain($ruleset, $chain);
1765 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1767 foreach my $rule (@$rules) {
1768 next if $rule->{type} ne 'out';
1769 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
1770 # check also other tap rules later
1771 ruleset_generate_rule($ruleset, $chain, $rule,
1772 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject
" }, undef, $cluster_conf);
1777 my $valid_netdev_names = {};
1778 for (my $i = 0; $i < $MAX_NETS; $i++) {
1779 $valid_netdev_names->{"net
$i"} = 1;
1783 my ($line, $need_iface, $allow_groups) = @_;
1785 my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport);
1787 # we can add single line comments to the end of the rule
1788 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
1790 # we can disable a rule when prefixed with '|'
1793 $enable = 0 if $line =~ s/^\|//;
1795 my @data = split(/\s+/, $line);
1796 my $expected_elements = $need_iface ? 8 : 7;
1798 die "wrong number of rule elements
\n" if scalar(@data) > $expected_elements;
1801 ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data
1803 ($type, $action, $source, $dest, $proto, $dport, $sport) = @data;
1806 die "incomplete rule
\n" if ! ($type && $action);
1812 if ($type eq 'in' || $type eq 'out') {
1813 if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) {
1815 } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
1817 my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)};
1818 die "unknown
macro '$1'\n" if !$preferred_name;
1819 $macro = $preferred_name;
1821 die "unknown action
'$action'\n";
1823 } elsif ($type eq 'group') {
1824 die "wrong number of rule elements
\n" if scalar(@data) != 3;
1825 die "groups disabled
\n" if !$allow_groups;
1827 die "invalid characters
in group name
\n" if $action !~ m/^${security_group_name_pattern}$/;
1829 die "unknown rule type
'$type'\n";
1833 $iface = undef if $iface && $iface eq '-';
1836 $proto = undef if $proto && $proto eq '-';
1837 pve_fw_verify_protocol_spec($proto) if $proto;
1839 $source = undef if $source && $source eq '-';
1840 $dest = undef if $dest && $dest eq '-';
1842 $dport = undef if $dport && $dport eq '-';
1843 $sport = undef if $sport && $sport eq '-';
1845 parse_port_name_number_or_range($dport) if defined($dport);
1846 parse_port_name_number_or_range($sport) if defined($sport);
1848 parse_address_list($source) if $source;
1849 parse_address_list($dest) if $dest;
1854 comment => $comment,
1866 sub parse_vmfw_option {
1871 my $loglevels = "emerg
|alert
|crit
|err
|warning
|notice
|info
|debug
|nolog
";
1873 if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
1876 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
1878 $value = $2 ? lc($3) : '';
1879 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1882 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
1887 die "can
't parse option '$line'\n"
1890 return ($opt, $value);
1893 sub parse_hostfw_option {
1898 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
1900 if ($line =~ m/^(enable|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) {
1903 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
1905 $value = $2 ? lc($3) : '';
1906 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
1911 die "can't parse option
'$line'\n"
1914 return ($opt, $value);
1917 sub parse_clusterfw_option {
1922 if ($line =~ m/^(enable):\s*(0|1)\s*$/i) {
1925 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
1930 die "can
't parse option '$line'\n"
1933 return ($opt, $value);
1936 sub parse_clusterfw_alias {
1940 if ($line =~ m/^(\S+)\s(\S+)$/) {
1944 pve_verify_ipv4_or_cidr($2) if $2;
1949 die "can't parse option
'$line'\n";
1952 return ($opt, $value);
1955 sub parse_vm_fw_rules {
1956 my ($filename, $fh) = @_;
1958 my $res = { rules => [], options => {}};
1962 while (defined(my $line = <$fh>)) {
1963 next if $line =~ m/^#/;
1964 next if $line =~ m/^\s*$/;
1966 my $linenr = $fh->input_line_number();
1967 my $prefix = "$filename (line
$linenr)";
1969 if ($line =~ m/^\[(\S+)\]\s*$/i) {
1971 warn "$prefix: ignore unknown section
'$section'\n" if !$res->{$section};
1975 warn "$prefix: skip line
- no section
";
1979 next if !$res->{$section}; # skip undefined section
1981 if ($section eq 'options') {
1983 my ($opt, $value) = parse_vmfw_option($line);
1984 $res->{options}->{$opt} = $value;
1986 warn "$prefix: $@" if $@;
1991 eval { $rule = parse_fw_rule($line, 1, 1); };
1993 warn "$prefix: $err";
1997 push @{$res->{$section}}, $rule;
2003 sub parse_host_fw_rules {
2004 my ($filename, $fh) = @_;
2006 my $res = { rules => [], options => {}};
2010 while (defined(my $line = <$fh>)) {
2011 next if $line =~ m/^#/;
2012 next if $line =~ m/^\s*$/;
2014 my $linenr = $fh->input_line_number();
2015 my $prefix = "$filename (line
$linenr)";
2017 if ($line =~ m/^\[(\S+)\]\s*$/i) {
2019 warn "$prefix: ignore unknown section
'$section'\n" if !$res->{$section};
2023 warn "$prefix: skip line
- no section
";
2027 next if !$res->{$section}; # skip undefined section
2029 if ($section eq 'options') {
2031 my ($opt, $value) = parse_hostfw_option($line);
2032 $res->{options}->{$opt} = $value;
2034 warn "$prefix: $@" if $@;
2039 eval { $rule = parse_fw_rule($line, 1, 1); };
2041 warn "$prefix: $err";
2045 push @{$res->{$section}}, $rule;
2051 sub parse_cluster_fw_rules {
2052 my ($filename, $fh) = @_;
2061 group_comments => {},
2063 ipset_comments => {},
2066 while (defined(my $line = <$fh>)) {
2067 next if $line =~ m/^#/;
2068 next if $line =~ m/^\s*$/;
2070 my $linenr = $fh->input_line_number();
2071 my $prefix = "$filename (line
$linenr)";
2073 if ($line =~ m/^\[options\]$/i) {
2074 $section = 'options';
2078 if ($line =~ m/^\[aliases\]$/i) {
2079 $section = 'aliases';
2083 if ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
2084 $section = 'groups';
2087 $res->{$section}->{$group} = [];
2088 $res->{group_comments}->{$group} = decode('utf8', $comment)
2093 if ($line =~ m/^\[rules\]$/i) {
2098 if ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i) {
2102 $res->{$section}->{$group} = [];
2103 $res->{ipset_comments}->{$group} = decode('utf8', $comment)
2109 warn "$prefix: skip line
- no section
\n";
2113 if ($section eq 'options') {
2115 my ($opt, $value) = parse_clusterfw_option($line);
2116 $res->{options}->{$opt} = $value;
2118 warn "$prefix: $@" if $@;
2119 } elsif ($section eq 'aliases') {
2121 my ($opt, $value) = parse_clusterfw_alias($line);
2122 $res->{aliases}->{$opt} = $value;
2124 warn "$prefix: $@" if $@;
2125 } elsif ($section eq 'rules') {
2127 eval { $rule = parse_fw_rule($line, 1, 1); };
2129 warn "$prefix: $err";
2132 push @{$res->{$section}}, $rule;
2133 } elsif ($section eq 'groups') {
2135 eval { $rule = parse_fw_rule($line, 0, 0); };
2137 warn "$prefix: $err";
2140 push @{$res->{$section}->{$group}}, $rule;
2141 } elsif ($section eq 'ipset') {
2142 # we can add single line comments to the end of the rule
2143 my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
2145 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2149 if($cidr !~ m/^${ip_alias_pattern}$/) {
2152 eval { pve_verify_ipv4_or_cidr($cidr); };
2154 warn "$prefix: $cidr - $err";
2159 my $entry = { cidr => $cidr };
2160 $entry->{nomatch} = 1 if $nomatch;
2161 $entry->{comment} = $comment if $comment;
2163 push @{$res->{$section}->{$group}}, $entry;
2171 my ($code, @param) = @_;
2175 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2182 sub read_local_vm_config {
2187 my $vmdata = { openvz => $openvz, qemu => $qemu };
2189 my $vmlist = PVE::Cluster::get_vmlist();
2190 return $vmdata if !$vmlist || !$vmlist->{ids};
2191 my $ids = $vmlist->{ids};
2193 foreach my $vmid (keys %$ids) {
2194 next if !$vmid; # skip VE0
2195 my $d = $ids->{$vmid};
2196 next if !$d->{node} || $d->{node} ne $nodename;
2197 next if !$d->{type};
2198 if ($d->{type} eq 'openvz') {
2199 if ($have_pve_manager) {
2200 my $cfspath = PVE::OpenVZ::cfs_config_path($vmid);
2201 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2202 $openvz->{$vmid} = $conf;
2205 } elsif ($d->{type} eq 'qemu') {
2206 if ($have_qemu_server) {
2207 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2208 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2209 $qemu->{$vmid} = $conf;
2218 sub read_bridges_config {
2220 my $bridgehash = {};
2222 dir_glob_foreach('/sys/class/net', 'vmbr(\d+)', sub {
2225 dir_glob_foreach("/sys/class/net/$bridge/brif", '((eth|bond)(\d+)(\.(\d+))?)', sub {
2226 my ($interface) = @_;
2227 push @{$bridgehash->{$bridge}}, $interface;
2234 sub load_vmfw_conf {
2239 my $filename = "/etc/pve
/firewall/$vmid.fw
";
2240 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2241 $vmfw_conf = parse_vm_fw_rules($filename, $fh);
2247 my $format_rules = sub {
2248 my ($rules, $need_iface) = @_;
2252 foreach my $rule (@$rules) {
2253 if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') {
2254 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2255 $raw .= uc($rule->{type});
2256 if ($rule->{macro}) {
2257 $raw .= " $rule->{macro}($rule->{action
})";
2259 $raw .= " " . $rule->{action};
2261 $raw .= " " . ($rule->{iface} || '-') if $need_iface;
2263 if ($rule->{type} ne 'group') {
2264 $raw .= " " . ($rule->{source} || '-');
2265 $raw .= " " . ($rule->{dest} || '-');
2266 $raw .= " " . ($rule->{proto} || '-');
2267 $raw .= " " . ($rule->{dport} || '-');
2268 $raw .= " " . ($rule->{sport} || '-');
2271 $raw .= " # " . encode('utf8', $rule->{comment})
2272 if $rule->{comment
} && $rule->{comment
} !~ m/^\s*$/;
2275 die "unknown rule type '$rule->{type}'";
2282 my $format_options = sub {
2287 $raw .= "[OPTIONS]\n\n";
2288 foreach my $opt (keys %$options) {
2289 $raw .= "$opt: $options->{$opt}\n";
2296 my $format_ipset = sub {
2302 foreach my $entry (@$options) {
2303 $nethash->{$entry->{cidr
}} = $entry;
2306 foreach my $cidr (sort keys %$nethash) {
2307 my $entry = $nethash->{$cidr};
2308 my $line = $entry->{nomatch
} ?
'!' : '';
2309 $line .= $entry->{cidr
};
2310 $line .= " # " . encode
('utf8', $entry->{comment
})
2311 if $entry->{comment
} && $entry->{comment
} !~ m/^\s*$/;
2318 sub save_vmfw_conf
{
2319 my ($vmid, $vmfw_conf) = @_;
2323 my $options = $vmfw_conf->{options
};
2324 $raw .= &$format_options($options) if scalar(keys %$options);
2326 my $rules = $vmfw_conf->{rules
};
2327 if (scalar(@$rules)) {
2328 $raw .= "[RULES]\n\n";
2329 $raw .= &$format_rules($rules, 1);
2333 my $filename = "/etc/pve/firewall/$vmid.fw";
2334 PVE
::Tools
::file_set_contents
($filename, $raw);
2337 sub read_vm_firewall_configs
{
2339 my $vmfw_configs = {};
2341 foreach my $vmid (keys %{$vmdata->{qemu
}}, keys %{$vmdata->{openvz
}}) {
2342 my $vmfw_conf = load_vmfw_conf
($vmid);
2343 next if !$vmfw_conf->{options
}; # skip if file does not exists
2344 $vmfw_configs->{$vmid} = $vmfw_conf;
2347 return $vmfw_configs;
2350 sub get_option_log_level
{
2351 my ($options, $k) = @_;
2353 my $v = $options->{$k};
2354 $v = $default_log_level if !defined($v);
2356 return undef if $v eq '' || $v eq 'nolog';
2358 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2360 return $v if ($v >= 0) && ($v <= 7);
2362 warn "unknown log level ($k = '$v')\n";
2367 sub generate_std_chains
{
2368 my ($ruleset, $options) = @_;
2370 my $loglevel = get_option_log_level
($options, 'smurf_log_level');
2372 # same as shorewall smurflog.
2373 my $chain = 'PVEFW-smurflog';
2374 $pve_std_chains->{$chain} = [];
2376 push @{$pve_std_chains->{$chain}}, get_log_rule_base
($chain, 0, "DROP: ", $loglevel) if $loglevel;
2377 push @{$pve_std_chains->{$chain}}, "-j DROP";
2379 # same as shorewall logflags action.
2380 $loglevel = get_option_log_level
($options, 'tcp_flags_log_level');
2381 $chain = 'PVEFW-logflags';
2382 $pve_std_chains->{$chain} = [];
2384 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2385 push @{$pve_std_chains->{$chain}}, get_log_rule_base
($chain, 0, "DROP: ", $loglevel) if $loglevel;
2386 push @{$pve_std_chains->{$chain}}, "-j DROP";
2388 foreach my $chain (keys %$pve_std_chains) {
2389 ruleset_create_chain
($ruleset, $chain);
2390 foreach my $rule (@{$pve_std_chains->{$chain}}) {
2392 ruleset_generate_rule
($ruleset, $chain, $rule);
2394 ruleset_addrule
($ruleset, $chain, $rule);
2400 sub generate_ipset_chains
{
2401 my ($ipset_ruleset, $fw_conf) = @_;
2403 foreach my $ipset (keys %{$fw_conf->{ipset
}}) {
2404 generate_ipset
($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset
}->{$ipset}, $fw_conf->{aliases
});
2408 sub generate_ipset
{
2409 my ($ipset_ruleset, $name, $options, $aliases) = @_;
2411 my $hashsize = scalar(@$options);
2412 if ($hashsize <= 64) {
2415 $hashsize = round_powerof2
($hashsize);
2418 push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize";
2422 foreach my $entry (@$options) {
2423 my $cidr = $entry->{cidr
};
2424 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2425 if ($aliases->{$cidr}) {
2426 $entry->{cidr
} = $aliases->{$cidr};
2428 warn "no such alias '$cidr'\n" if !$aliases->{$cidr};
2431 $nethash->{$entry->{cidr
}} = $entry;
2434 foreach my $cidr (sort keys %$nethash) {
2435 my $entry = $nethash->{$cidr};
2437 my $cmd = "add $name $cidr";
2438 if ($entry->{nomatch
}) {
2439 if ($feature_ipset_nomatch) {
2440 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
2442 warn "ignore !$cidr - nomatch not supported by kernel\n";
2445 push @{$ipset_ruleset->{$name}}, $cmd;
2450 sub round_powerof2
{
2454 $int |= $int >> $_ foreach (1,2,4,8,16);
2458 sub save_pvefw_status
{
2461 die "unknown status '$status' - internal error"
2462 if $status !~ m/^(stopped|active)$/;
2464 mkdir dirname
($pve_fw_status_filename);
2465 PVE
::Tools
::file_set_contents
($pve_fw_status_filename, $status);
2468 sub read_pvefw_status
{
2470 my $status = 'unknown';
2472 return 'stopped' if ! -f
$pve_fw_status_filename;
2475 $status = PVE
::Tools
::file_get_contents
($pve_fw_status_filename);
2482 # fixme: move to pve-common PVE::ProcFSTools
2483 sub read_proc_net_route
{
2484 my $filename = "/proc/net/route";
2488 my $fh = IO
::File-
>new ($filename, "r");
2489 return $res if !$fh;
2491 my $int_to_quad = sub {
2492 return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0);
2495 while (defined(my $line = <$fh>)) {
2496 next if $line =~/^Iface\s+Destination/; # skip head
2497 my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8];
2498 push @{$res->{$iface}}, {
2499 dest
=> &$int_to_quad(hex($dest)),
2500 gateway
=> &$int_to_quad(hex($gateway)),
2501 mask
=> &$int_to_quad(hex($mask)),
2510 sub load_clusterfw_conf
{
2512 my $cluster_conf = {};
2513 if (my $fh = IO
::File-
>new($clusterfw_conf_filename, O_RDONLY
)) {
2514 $cluster_conf = parse_cluster_fw_rules
($clusterfw_conf_filename, $fh);
2517 return $cluster_conf;
2520 sub save_clusterfw_conf
{
2521 my ($cluster_conf) = @_;
2525 my $options = $cluster_conf->{options
};
2526 $raw .= &$format_options($options) if scalar(keys %$options);
2528 foreach my $ipset (sort keys %{$cluster_conf->{ipset
}}) {
2529 if (my $comment = $cluster_conf->{ipset_comments
}->{$ipset}) {
2530 my $utf8comment = encode
('utf8', $comment);
2531 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
2533 $raw .= "[IPSET $ipset]\n\n";
2535 my $options = $cluster_conf->{ipset
}->{$ipset};
2536 $raw .= &$format_ipset($options);
2540 my $rules = $cluster_conf->{rules
};
2541 if (scalar(@$rules)) {
2542 $raw .= "[RULES]\n\n";
2543 $raw .= &$format_rules($rules, 1);
2547 foreach my $group (sort keys %{$cluster_conf->{groups
}}) {
2548 my $rules = $cluster_conf->{groups
}->{$group};
2549 if (my $comment = $cluster_conf->{group_comments
}->{$group}) {
2550 my $utf8comment = encode
('utf8', $comment);
2551 $raw .= "[group $group] # $utf8comment\n\n";
2553 $raw .= "[group $group]\n\n";
2556 $raw .= &$format_rules($rules, 0);
2560 PVE
::Tools
::file_set_contents
($clusterfw_conf_filename, $raw);
2563 sub load_hostfw_conf
{
2565 my $hostfw_conf = {};
2566 if (my $fh = IO
::File-
>new($hostfw_conf_filename, O_RDONLY
)) {
2567 $hostfw_conf = parse_host_fw_rules
($hostfw_conf_filename, $fh);
2569 return $hostfw_conf;
2572 sub save_hostfw_conf
{
2573 my ($hostfw_conf) = @_;
2577 my $options = $hostfw_conf->{options
};
2578 $raw .= &$format_options($options) if scalar(keys %$options);
2580 my $rules = $hostfw_conf->{rules
};
2581 if (scalar(@$rules)) {
2582 $raw .= "[RULES]\n\n";
2583 $raw .= &$format_rules($rules, 1);
2587 PVE
::Tools
::file_set_contents
($hostfw_conf_filename, $raw);
2591 my ($cluster_conf, $hostfw_conf) = @_;
2593 $cluster_conf = load_clusterfw_conf
() if !$cluster_conf;
2594 $hostfw_conf = load_hostfw_conf
() if !$hostfw_conf;
2596 my $vmdata = read_local_vm_config
();
2597 my $vmfw_configs = read_vm_firewall_configs
($vmdata);
2599 my $routing_table = read_proc_net_route
();
2601 my $bridges_config = read_bridges_config
();
2603 my $ipset_ruleset = {};
2604 generate_ipset_chains
($ipset_ruleset, $cluster_conf);
2608 ruleset_create_chain
($ruleset, "PVEFW-INPUT");
2609 ruleset_create_chain
($ruleset, "PVEFW-OUTPUT");
2611 ruleset_create_chain
($ruleset, "PVEFW-FORWARD");
2613 my $hostfw_options = $hostfw_conf->{options
} || {};
2615 generate_std_chains
($ruleset, $hostfw_options);
2617 my $hostfw_enable = !(defined($hostfw_options->{enable
}) && ($hostfw_options->{enable
} == 0));
2619 enable_host_firewall
($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable;
2621 # generate firewall rules for QEMU VMs
2622 foreach my $vmid (keys %{$vmdata->{qemu
}}) {
2623 my $conf = $vmdata->{qemu
}->{$vmid};
2624 my $vmfw_conf = $vmfw_configs->{$vmid};
2625 next if !$vmfw_conf;
2626 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
2628 foreach my $netid (keys %$conf) {
2629 next if $netid !~ m/^net(\d+)$/;
2630 my $net = PVE
::QemuServer
::parse_net
($conf->{$netid});
2632 my $iface = "tap${vmid}i$1";
2634 my $bridge = $net->{bridge
};
2635 next if !$bridge; # fixme: ?
2637 $bridge .= "v$net->{tag}" if $net->{tag
};
2639 generate_bridge_chains
($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config);
2641 my $macaddr = $net->{macaddr
};
2642 generate_tap_rules_direction
($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
2643 $vmfw_conf, $vmid, $bridge, 'IN');
2644 generate_tap_rules_direction
($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
2645 $vmfw_conf, $vmid, $bridge, 'OUT');
2649 # generate firewall rules for OpenVZ containers
2650 foreach my $vmid (keys %{$vmdata->{openvz
}}) {
2651 my $conf = $vmdata->{openvz
}->{$vmid};
2653 my $vmfw_conf = $vmfw_configs->{$vmid};
2654 next if !$vmfw_conf;
2655 next if defined($vmfw_conf->{options
}->{enable
}) && ($vmfw_conf->{options
}->{enable
} == 0);
2657 if ($conf->{ip_address
} && $conf->{ip_address
}->{value
}) {
2658 my $ip = $conf->{ip_address
}->{value
};
2659 generate_venet_rules_direction
($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'IN');
2660 generate_venet_rules_direction
($ruleset, $cluster_conf, $hostfw_conf, $vmfw_conf, $vmid, $ip, 'OUT');
2663 if ($conf->{netif
} && $conf->{netif
}->{value
}) {
2664 my $netif = PVE
::OpenVZ
::parse_netif
($conf->{netif
}->{value
});
2665 foreach my $netid (keys %$netif) {
2666 my $d = $netif->{$netid};
2667 my $bridge = $d->{bridge
};
2669 warn "no bridge device for CT $vmid iface '$netid'\n";
2673 generate_bridge_chains
($ruleset, $hostfw_conf, $bridge, $routing_table, $bridges_config);
2675 my $macaddr = $d->{mac
};
2676 my $iface = $d->{host_ifname
};
2677 generate_tap_rules_direction
($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
2678 $vmfw_conf, $vmid, $bridge, 'IN');
2679 generate_tap_rules_direction
($ruleset, $cluster_conf, $hostfw_conf, $iface, $netid, $macaddr,
2680 $vmfw_conf, $vmid, $bridge, 'OUT');
2685 if($hostfw_options->{optimize
}){
2687 my $accept = ruleset_chain_exist
($ruleset, "PVEFW-IPS") ?
"PVEFW-IPS" : "ACCEPT";
2688 ruleset_insertrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept");
2689 ruleset_insertrule
($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP");
2692 # fixme: what log level should we use here?
2693 my $loglevel = get_option_log_level
($hostfw_options, "log_level_out");
2695 # fixme: should we really block inter-bridge traffic?
2697 # always allow traffic from containers?
2698 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN");
2700 # disable interbridge routing
2701 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop");
2702 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop");
2703 ruleset_addlog
($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+");
2704 ruleset_addlog
($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+");
2705 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP");
2706 ruleset_addrule
($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP");
2708 return ($ruleset, $ipset_ruleset);
2711 sub get_ruleset_status
{
2712 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
2714 my $statushash = {};
2716 foreach my $chain (sort keys %$ruleset) {
2717 my $sig = &$digest_fn($ruleset->{$chain});
2719 $statushash->{$chain}->{sig
} = $sig;
2721 my $oldsig = $active_chains->{$chain};
2722 if (!defined($oldsig)) {
2723 $statushash->{$chain}->{action
} = 'create';
2725 if ($oldsig eq $sig) {
2726 $statushash->{$chain}->{action
} = 'exists';
2728 $statushash->{$chain}->{action
} = 'update';
2731 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
2732 foreach my $cmd (@{$ruleset->{$chain}}) {
2733 print "\t$cmd\n" if $verbose;
2737 foreach my $chain (sort keys %$active_chains) {
2738 if (!defined($ruleset->{$chain})) {
2739 my $sig = $active_chains->{$chain};
2740 $statushash->{$chain}->{action
} = 'delete';
2741 $statushash->{$chain}->{sig
} = $sig;
2742 print "delete $chain ($sig)\n" if $verbose;
2749 sub print_sig_rule
{
2750 my ($chain, $sig) = @_;
2752 # We just use this to store a SHA1 checksum used to detect changes
2753 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
2756 sub get_ruleset_cmdlist {
2757 my ($ruleset, $verbose) = @_;
2759 my $cmdlist = "*filter
\n"; # we pass this to iptables-restore;
2761 my ($active_chains, $hooks) = iptables_get_chains();
2762 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
2764 # create missing chains first
2765 foreach my $chain (sort keys %$ruleset) {
2766 my $stat = $statushash->{$chain};
2767 die "internal error
" if !$stat;
2768 next if $stat->{action} ne 'create';
2770 $cmdlist .= ":$chain - [0:0]\n";
2773 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2774 if (!$hooks->{$h}) {
2775 $cmdlist .= "-A $h -j PVEFW-$h\n";
2779 foreach my $chain (sort keys %$ruleset) {
2780 my $stat = $statushash->{$chain};
2781 die "internal error" if !$stat;
2783 if ($stat->{action
} eq 'update' || $stat->{action
} eq 'create') {
2784 $cmdlist .= "-F $chain\n";
2785 foreach my $cmd (@{$ruleset->{$chain}}) {
2786 $cmdlist .= "$cmd\n";
2788 $cmdlist .= print_sig_rule
($chain, $stat->{sig
});
2789 } elsif ($stat->{action
} eq 'delete') {
2790 die "internal error"; # this should not happen
2791 } elsif ($stat->{action
} eq 'exists') {
2794 die "internal error - unknown status '$stat->{action}'";
2798 foreach my $chain (keys %$statushash) {
2799 next if $statushash->{$chain}->{action
} ne 'delete';
2800 $cmdlist .= "-F $chain\n";
2802 foreach my $chain (keys %$statushash) {
2803 next if $statushash->{$chain}->{action
} ne 'delete';
2804 next if $chain eq 'PVEFW-INPUT';
2805 next if $chain eq 'PVEFW-OUTPUT';
2806 next if $chain eq 'PVEFW-FORWARD';
2807 $cmdlist .= "-X $chain\n";
2810 my $changes = $cmdlist ne "*filter\n" ?
1 : 0;
2812 $cmdlist .= "COMMIT\n";
2814 return wantarray ?
($cmdlist, $changes) : $cmdlist;
2817 sub get_ipset_cmdlist
{
2818 my ($ruleset, $verbose) = @_;
2822 my $delete_cmdlist = "";
2824 my $active_chains = ipset_get_chains
();
2825 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&ipset_chain_digest
, $verbose);
2827 # remove stale _swap chains
2828 foreach my $chain (keys %$active_chains) {
2829 if ($chain =~ m/^PVEFW-\S+_swap$/) {
2830 $cmdlist .= "destroy $chain\n";
2834 foreach my $chain (sort keys %$ruleset) {
2835 my $stat = $statushash->{$chain};
2836 die "internal error" if !$stat;
2838 if ($stat->{action
} eq 'create') {
2839 foreach my $cmd (@{$ruleset->{$chain}}) {
2840 $cmdlist .= "$cmd\n";
2844 if ($stat->{action
} eq 'update') {
2845 my $chain_swap = $chain."_swap";
2847 foreach my $cmd (@{$ruleset->{$chain}}) {
2848 $cmd =~ s/$chain/$chain_swap/;
2849 $cmdlist .= "$cmd\n";
2851 $cmdlist .= "swap $chain_swap $chain\n";
2852 $cmdlist .= "flush $chain_swap\n";
2853 $cmdlist .= "destroy $chain_swap\n";
2858 foreach my $chain (keys %$statushash) {
2859 next if $statushash->{$chain}->{action
} ne 'delete';
2861 $delete_cmdlist .= "flush $chain\n";
2862 $delete_cmdlist .= "destroy $chain\n";
2865 my $changes = ($cmdlist || $delete_cmdlist) ?
1 : 0;
2867 return ($cmdlist, $delete_cmdlist, $changes);
2871 my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_;
2873 enable_bridge_firewall
();
2875 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
2876 get_ipset_cmdlist
($ipset_ruleset, undef, $verbose);
2878 my ($cmdlist, $changes) = get_ruleset_cmdlist
($ruleset, $verbose);
2881 if ($ipset_changes) {
2882 print "ipset changes:\n";
2883 print $ipset_create_cmdlist if $ipset_create_cmdlist;
2884 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
2888 print "iptables changes:\n";
2893 ipset_restore_cmdlist
($ipset_create_cmdlist);
2895 iptables_restore_cmdlist
($cmdlist);
2897 ipset_restore_cmdlist
($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
2899 # test: re-read status and check if everything is up to date
2900 my $active_chains = iptables_get_chains
();
2901 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&iptables_chain_digest
, 0);
2904 foreach my $chain (sort keys %$ruleset) {
2905 my $stat = $statushash->{$chain};
2906 if ($stat->{action
} ne 'exists') {
2907 warn "unable to update chain '$chain'\n";
2912 die "unable to apply firewall changes\n" if $errors;
2914 update_nf_conntrack_max
($hostfw_conf);
2916 update_nf_conntrack_tcp_timeout_established
($hostfw_conf);
2920 sub update_nf_conntrack_max
{
2921 my ($hostfw_conf) = @_;
2923 my $max = 65536; # reasonable default
2925 my $options = $hostfw_conf->{options
} || {};
2927 if (defined($options->{nf_conntrack_max
}) && ($options->{nf_conntrack_max
} > $max)) {
2928 $max = $options->{nf_conntrack_max
};
2929 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
2932 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
2933 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
2935 my $current = int(PVE
::Tools
::file_read_firstline
($filename_nf_conntrack_max) || $max);
2937 if ($current != $max) {
2938 my $hashsize = int($max/4);
2939 PVE
::ProcFSTools
::write_proc_entry
($filename_hashsize, $hashsize);
2940 PVE
::ProcFSTools
::write_proc_entry
($filename_nf_conntrack_max, $max);
2944 sub update_nf_conntrack_tcp_timeout_established
{
2945 my ($hostfw_conf) = @_;
2947 my $options = $hostfw_conf->{options
} || {};
2949 my $value = defined($options->{nf_conntrack_tcp_timeout_established
}) ?
$options->{nf_conntrack_tcp_timeout_established
} : 432000;
2951 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
2954 sub remove_pvefw_chains
{
2956 my ($chash, $hooks) = iptables_get_chains
();
2957 my $cmdlist = "*filter\n";
2959 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
2961 $cmdlist .= "-D $h -j PVEFW-$h\n";
2965 foreach my $chain (keys %$chash) {
2966 $cmdlist .= "-F $chain\n";
2969 foreach my $chain (keys %$chash) {
2970 $cmdlist .= "-X $chain\n";
2972 $cmdlist .= "COMMIT\n";
2974 iptables_restore_cmdlist
($cmdlist);
2978 my ($start, $verbose) = @_;
2982 my $cluster_conf = load_clusterfw_conf
();
2983 my $cluster_options = $cluster_conf->{options
};
2985 my $enable = $cluster_options->{enable
};
2987 my $status = read_pvefw_status
();
2989 die "Firewall is disabled - cannot start\n" if !$enable && $start;
2992 PVE
::Firewall
::remove_pvefw_chains
();
2993 print "Firewall disabled\n" if $verbose;
2997 my $hostfw_conf = load_hostfw_conf
();
2999 my ($ruleset, $ipset_ruleset) = compile
($cluster_conf, $hostfw_conf);
3001 if ($start || $status eq 'active') {
3003 save_pvefw_status
('active') if ($status ne 'active');
3005 apply_ruleset
($ruleset, $hostfw_conf, $ipset_ruleset, $verbose);
3007 print "Firewall not active (status = $status)\n" if $verbose;