8 use Socket
qw(AF_INET6 inet_ntop inet_pton);
10 use PVE
::Exception
qw(raise raise_param_exc);
11 use PVE
::JSONSchema
qw(register_standard_option get_standard_option);
14 use PVE
::Tools
qw($IPV4RE $IPV6RE);
19 use PVE
::Tools
qw(run_command lock_file dir_glob_foreach);
22 my $hostfw_conf_filename = "/etc/pve/local/host.fw";
23 my $pvefw_conf_dir = "/etc/pve/firewall";
24 my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
26 # dynamically include PVE::QemuServer and PVE::LXC
27 # to avoid dependency problems
30 require PVE
::QemuServer
;
31 $have_qemu_server = 1;
41 my $pve_fw_status_dir = "/var/lib/pve-firewall";
43 mkdir $pve_fw_status_dir; # make sure this exists
45 my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
46 my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
47 our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
49 my $max_alias_name_length = 64;
50 my $max_ipset_name_length = 64;
51 my $max_group_name_length = 20;
53 PVE
::JSONSchema
::register_format
('IPorCIDR', \
&pve_verify_ip_or_cidr
);
54 sub pve_verify_ip_or_cidr
{
55 my ($cidr, $noerr) = @_;
57 if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
58 return $cidr if Net
::IP-
>new($cidr);
59 return undef if $noerr;
60 die Net
::IP
::Error
() . "\n";
62 return undef if $noerr;
63 die "value does not look like a valid IP address or CIDR network\n";
66 PVE
::JSONSchema
::register_format
('IPorCIDRorAlias', \
&pve_verify_ip_or_cidr_or_alias
);
67 sub pve_verify_ip_or_cidr_or_alias
{
68 my ($cidr, $noerr) = @_;
70 return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
72 return pve_verify_ip_or_cidr
($cidr, $noerr);
75 PVE
::JSONSchema
::register_standard_option
('ipset-name', {
76 description
=> "IP set name.",
78 pattern
=> $ipset_name_pattern,
80 maxLength
=> $max_ipset_name_length,
83 PVE
::JSONSchema
::register_standard_option
('pve-fw-alias', {
84 description
=> "Alias name.",
86 pattern
=> $ip_alias_pattern,
88 maxLength
=> $max_alias_name_length,
91 PVE
::JSONSchema
::register_standard_option
('pve-fw-loglevel' => {
92 description
=> "Log level.",
94 enum
=> ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'],
98 PVE
::JSONSchema
::register_standard_option
('pve-security-group-name', {
99 description
=> "Security Group name.",
101 pattern
=> $security_group_name_pattern,
103 maxLength
=> $max_group_name_length,
106 my $feature_ipset_nomatch = 0;
108 my (undef, undef, $release) = POSIX
::uname
();
109 if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) {
110 my ($major, $minor) = ($1, $2);
111 $feature_ipset_nomatch = 1 if ($major > 3) ||
112 ($major == 3 && $minor >= 7);
117 my $nodename = PVE
::INotify
::nodename
();
119 my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
121 my $default_log_level = 'nolog'; # avoid logs by default
123 my $log_level_hash = {
134 # we need to overwrite some macros for ipv6
135 my $pve_ipv6fw_macros = {
137 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'echo-request' },
139 'NeighborDiscovery' => [
140 "IPv6 neighbor solicitation, neighbor and router advertisement",
141 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'router-solicitation' },
142 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'router-advertisement' },
143 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'neighbor-solicitation' },
144 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'neighbor-advertisement' },
147 { action
=> 'PARAM', proto
=> 'udp', dport
=> '546:547', sport
=> '546:547' },
150 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
151 { action
=> 'PARAM', proto
=> 'icmpv6', dport
=> 'echo-request' },
155 # imported/converted from: /usr/share/shorewall/macro.*
156 my $pve_fw_macros = {
159 { action
=> 'PARAM', proto
=> 'udp', dport
=> '10080' },
160 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10080' },
163 "Auth (identd) traffic",
164 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '113' },
167 "Border Gateway Protocol traffic",
168 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '179' },
171 "BitTorrent traffic for BitTorrent 3.1 and earlier",
172 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6889' },
173 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
176 "BitTorrent traffic for BitTorrent 3.2 and later",
177 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6881:6999' },
178 { action
=> 'PARAM', proto
=> 'udp', dport
=> '6881' },
181 "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)",
182 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6789' },
183 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6800:7300' },
186 "Concurrent Versions System pserver traffic",
187 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2401' },
190 "Citrix/ICA traffic (ICA, ICA Browser, CGP)",
191 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1494' },
192 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1604' },
193 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2598' },
196 "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)",
197 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3689' },
198 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3689' },
201 "Distributed Checksum Clearinghouse spam filtering mechanism",
202 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6277' },
205 "Forwarded DHCP traffic",
206 { action
=> 'PARAM', proto
=> 'udp', dport
=> '67:68', sport
=> '67:68' },
209 "Domain Name System traffic (upd and tcp)",
210 { action
=> 'PARAM', proto
=> 'udp', dport
=> '53' },
211 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '53' },
214 "Distributed Compiler service",
215 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3632' },
218 "File Transfer Protocol",
219 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '21' },
222 "Finger protocol (RFC 742)",
223 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '79' },
226 "GNUnet secure peer-to-peer networking traffic",
227 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '2086' },
228 { action
=> 'PARAM', proto
=> 'udp', dport
=> '2086' },
229 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1080' },
230 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1080' },
233 "Generic Routing Encapsulation tunneling protocol",
234 { action
=> 'PARAM', proto
=> '47' },
237 "Git distributed revision control traffic",
238 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9418' },
241 "OpenPGP HTTP keyserver protocol traffic",
242 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '11371' },
245 "Hypertext Transfer Protocol (WWW)",
246 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
249 "Hypertext Transfer Protocol (WWW) over SSL",
250 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
253 "Internet Cache Protocol V2 (Squid) traffic",
254 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3130' },
257 "AOL Instant Messenger traffic",
258 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5190' },
261 "Internet Message Access Protocol",
262 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '143' },
265 "Internet Message Access Protocol over SSL",
266 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '993' },
269 "IPIP capsulation traffic",
270 { action
=> 'PARAM', proto
=> '94' },
274 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
275 { action
=> 'PARAM', proto
=> '50' },
278 "IPsec authentication (AH) traffic",
279 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500', sport
=> '500' },
280 { action
=> 'PARAM', proto
=> '51' },
283 "IPsec traffic and Nat-Traversal",
284 { action
=> 'PARAM', proto
=> 'udp', dport
=> '500' },
285 { action
=> 'PARAM', proto
=> 'udp', dport
=> '4500' },
286 { action
=> 'PARAM', proto
=> '50' },
289 "Internet Relay Chat traffic",
290 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6667' },
293 "HP Jetdirect printing",
294 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '9100' },
297 "Layer 2 Tunneling Protocol traffic",
298 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1701' },
301 "Lightweight Directory Access Protocol traffic",
302 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '389' },
305 "Secure Lightweight Directory Access Protocol traffic",
306 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '636' },
309 "Microsoft Notification Protocol",
310 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1863' },
313 "Microsoft SQL Server",
314 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1433' },
317 "Mail traffic (SMTP, SMTPS, Submission)",
318 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
319 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
320 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
323 "Munin networked resource monitoring traffic",
324 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '4949' },
328 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3306' },
331 "NNTP traffic (Usenet).",
332 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '119' },
335 "Encrypted NNTP traffic (Usenet)",
336 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '563' },
339 "Network Time Protocol (ntpd)",
340 { action
=> 'PARAM', proto
=> 'udp', dport
=> '123' },
343 "OSPF multicast traffic",
344 { action
=> 'PARAM', proto
=> '89' },
348 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1194' },
351 "Symantec PCAnywere (tm)",
352 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5632' },
353 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5631' },
357 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '110' },
360 "Encrypted POP3 traffic",
361 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '995' },
364 "Point-to-Point Tunneling Protocol",
365 { action
=> 'PARAM', proto
=> '47' },
366 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '1723' },
370 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
374 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5432' },
377 "Line Printer protocol printing",
378 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '515' },
381 "Microsoft Remote Desktop Protocol traffic",
382 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3389' },
385 "Routing Information Protocol (bidirectional)",
386 { action
=> 'PARAM', proto
=> 'udp', dport
=> '520' },
389 "BIND remote management protocol",
390 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '953' },
393 "Razor Antispam System",
394 { action
=> 'ACCEPT', proto
=> 'tcp', dport
=> '2703' },
397 "Remote time retrieval (rdate)",
398 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
402 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '873' },
405 "SANE network scanning",
406 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '6566' },
409 "Microsoft SMB traffic",
410 { action
=> 'PARAM', proto
=> 'udp', dport
=> '135,445' },
411 { action
=> 'PARAM', proto
=> 'udp', dport
=> '137:139' },
412 { action
=> 'PARAM', proto
=> 'udp', dport
=> '1024:65535', sport
=> '137' },
413 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '135,139,445' },
416 "Samba Web Administration Tool",
417 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '901' },
420 "Simple Mail Transfer Protocol",
421 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '25' },
424 "Encrypted Simple Mail Transfer Protocol",
425 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '465' },
428 "Simple Network Management Protocol",
429 { action
=> 'PARAM', proto
=> 'udp', dport
=> '161:162' },
430 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '161' },
433 "Spam Assassin SPAMD traffic",
434 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '783' },
437 "Secure shell traffic",
438 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '22' },
441 "Subversion server (svnserve)",
442 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3690' },
445 "SixXS IPv6 Deployment and Tunnel Broker",
446 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3874' },
447 { action
=> 'PARAM', proto
=> 'udp', dport
=> '3740' },
448 { action
=> 'PARAM', proto
=> '41' },
449 { action
=> 'PARAM', proto
=> 'udp', dport
=> '5072,8374' },
452 "Squid web proxy traffic",
453 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '3128' },
456 "Mail message submission traffic",
457 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '587' },
460 "Syslog protocol (RFC 5424) traffic",
461 { action
=> 'PARAM', proto
=> 'udp', dport
=> '514' },
462 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '514' },
465 "Trivial File Transfer Protocol traffic",
466 { action
=> 'PARAM', proto
=> 'udp', dport
=> '69' },
470 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '23' },
474 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '992' },
477 "RFC 868 Time protocol",
478 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '37' },
481 "Traceroute (for up to 30 hops) traffic",
482 { action
=> 'PARAM', proto
=> 'udp', dport
=> '33434:33524' },
483 { action
=> 'PARAM', proto
=> 'icmp', dport
=> 'echo-request' },
486 "VNC traffic for VNC display's 0 - 99",
487 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5900:5999' },
490 "VNC traffic from Vncservers to Vncviewers in listen mode",
491 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '5500' },
494 "WWW traffic (HTTP and HTTPS)",
495 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '80' },
496 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '443' },
499 "Web Cache/Proxy traffic (port 8080)",
500 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '8080' },
504 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '10000' },
507 "Whois (nicname, RFC 3912) traffic",
508 { action
=> 'PARAM', proto
=> 'tcp', dport
=> '43' },
512 my $pve_fw_parsed_macros;
513 my $pve_fw_macro_descr;
514 my $pve_fw_macro_ipversion = {};
515 my $pve_fw_preferred_macro_names = {};
517 my $pve_std_chains = {};
518 $pve_std_chains->{4} = {
519 'PVEFW-SET-ACCEPT-MARK' => [
520 "-j MARK --set-mark 1",
522 'PVEFW-DropBroadcast' => [
523 # same as shorewall 'Broadcast'
524 # simply DROP BROADCAST/MULTICAST/ANYCAST
525 # we can use this to reduce logging
526 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
527 { action
=> 'DROP', dsttype
=> 'MULTICAST' },
528 { action
=> 'DROP', dsttype
=> 'ANYCAST' },
529 { action
=> 'DROP', dest
=> '224.0.0.0/4' },
532 # same as shorewall 'reject'
533 { action
=> 'DROP', dsttype
=> 'BROADCAST' },
534 { action
=> 'DROP', source
=> '224.0.0.0/4' },
535 { action
=> 'DROP', proto
=> 'icmp' },
536 "-p tcp -j REJECT --reject-with tcp-reset",
537 "-p udp -j REJECT --reject-with icmp-port-unreachable",
538 "-p icmp -j REJECT --reject-with icmp-host-unreachable",
539 "-j REJECT --reject-with icmp-host-prohibited",
542 # same as shorewall 'Drop', which is equal to DROP,
543 # but REJECT/DROP some packages to reduce logging,
544 # and ACCEPT critical ICMP types
545 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
546 # we are not interested in BROADCAST/MULTICAST/ANYCAST
547 { action
=> 'PVEFW-DropBroadcast' },
548 # ACCEPT critical ICMP types
549 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
550 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
551 # Drop packets with INVALID state
552 "-m conntrack --ctstate INVALID -j DROP",
553 # Drop Microsoft SMB noise
554 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
555 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
556 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
557 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
558 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
559 # Drop new/NotSyn traffic so that it doesn't get logged
560 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
562 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
565 # same as shorewall 'Reject', which is equal to Reject,
566 # but REJECT/DROP some packages to reduce logging,
567 # and ACCEPT critical ICMP types
568 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
569 # we are not interested in BROADCAST/MULTICAST/ANYCAST
570 { action
=> 'PVEFW-DropBroadcast' },
571 # ACCEPT critical ICMP types
572 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'fragmentation-needed' },
573 { action
=> 'ACCEPT', proto
=> 'icmp', dport
=> 'time-exceeded' },
574 # Drop packets with INVALID state
575 "-m conntrack --ctstate INVALID -j DROP",
576 # Drop Microsoft SMB noise
577 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
578 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
579 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
580 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
581 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
582 # Drop new/NotSyn traffic so that it doesn't get logged
583 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
585 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
587 'PVEFW-tcpflags' => [
588 # same as shorewall tcpflags action.
589 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
590 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
591 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
592 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
593 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
594 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
597 # same as shorewall smurfs action
598 # Filter packets for smurfs (packets with a broadcast address as the source).
599 "-s 0.0.0.0/32 -j RETURN", # allow DHCP
600 "-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
601 "-s 224.0.0.0/4 -g PVEFW-smurflog",
605 $pve_std_chains->{6} = {
606 'PVEFW-SET-ACCEPT-MARK' => [
607 "-j MARK --set-mark 1",
609 'PVEFW-DropBroadcast' => [
610 # same as shorewall 'Broadcast'
611 # simply DROP BROADCAST/MULTICAST/ANYCAST
612 # we can use this to reduce logging
613 #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
614 # ipv6 addrtype does not work with kernel 2.6.32
615 #{ action => 'DROP', dsttype => 'MULTICAST' },
616 #{ action => 'DROP', dsttype => 'ANYCAST' },
617 { action
=> 'DROP', dest
=> 'ff00::/8' },
618 #{ action => 'DROP', dest => '224.0.0.0/4' },
621 # same as shorewall 'reject'
622 #{ action => 'DROP', dsttype => 'BROADCAST' },
623 #{ action => 'DROP', source => '224.0.0.0/4' },
624 { action
=> 'DROP', proto
=> 'icmpv6' },
625 "-p tcp -j REJECT --reject-with tcp-reset",
626 #"-p udp -j REJECT --reject-with icmp-port-unreachable",
627 #"-p icmp -j REJECT --reject-with icmp-host-unreachable",
628 #"-j REJECT --reject-with icmp-host-prohibited",
631 # same as shorewall 'Drop', which is equal to DROP,
632 # but REJECT/DROP some packages to reduce logging,
633 # and ACCEPT critical ICMP types
634 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
635 # we are not interested in BROADCAST/MULTICAST/ANYCAST
636 { action
=> 'PVEFW-DropBroadcast' },
637 # ACCEPT critical ICMP types
638 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'destination-unreachable' },
639 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'time-exceeded' },
640 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'packet-too-big' },
642 # Drop packets with INVALID state
643 "-m conntrack --ctstate INVALID -j DROP",
644 # Drop Microsoft SMB noise
645 { action
=> 'DROP', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
646 { action
=> 'DROP', proto
=> 'udp', dport
=> '137:139'},
647 { action
=> 'DROP', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
648 { action
=> 'DROP', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
649 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
650 # Drop new/NotSyn traffic so that it doesn't get logged
651 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
653 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
656 # same as shorewall 'Reject', which is equal to Reject,
657 # but REJECT/DROP some packages to reduce logging,
658 # and ACCEPT critical ICMP types
659 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '43' }, # REJECT 'auth'
660 # we are not interested in BROADCAST/MULTICAST/ANYCAST
661 { action
=> 'PVEFW-DropBroadcast' },
662 # ACCEPT critical ICMP types
663 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'destination-unreachable' },
664 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'time-exceeded' },
665 { action
=> 'ACCEPT', proto
=> 'icmpv6', dport
=> 'packet-too-big' },
667 # Drop packets with INVALID state
668 "-m conntrack --ctstate INVALID -j DROP",
669 # Drop Microsoft SMB noise
670 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '135,445', nbdport
=> 2 },
671 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '137:139'},
672 { action
=> 'PVEFW-reject', proto
=> 'udp', dport
=> '1024:65535', sport
=> 137 },
673 { action
=> 'PVEFW-reject', proto
=> 'tcp', dport
=> '135,139,445', nbdport
=> 3 },
674 { action
=> 'DROP', proto
=> 'udp', dport
=> 1900 }, # UPnP
675 # Drop new/NotSyn traffic so that it doesn't get logged
676 "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
678 { action
=> 'DROP', proto
=> 'udp', sport
=> 53 },
680 'PVEFW-tcpflags' => [
681 # same as shorewall tcpflags action.
682 # Packets arriving on this interface are checked for som illegal combinations of TCP flags
683 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags",
684 "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags",
685 "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags",
686 "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
687 "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
691 # iptables -p icmp -h
692 my $icmp_type_names = {
695 'destination-unreachable' => 1,
696 'network-unreachable' => 1,
697 'host-unreachable' => 1,
698 'protocol-unreachable' => 1,
699 'port-unreachable' => 1,
700 'fragmentation-needed' => 1,
701 'source-route-failed' => 1,
702 'network-unknown' => 1,
704 'network-prohibited' => 1,
705 'host-prohibited' => 1,
706 'TOS-network-unreachable' => 1,
707 'TOS-host-unreachable' => 1,
708 'communication-prohibited' => 1,
709 'host-precedence-violation' => 1,
710 'precedence-cutoff' => 1,
711 'source-quench' => 1,
713 'network-redirect' => 1,
714 'host-redirect' => 1,
715 'TOS-network-redirect' => 1,
716 'TOS-host-redirect' => 1,
718 'router-advertisement' => 1,
719 'router-solicitation' => 1,
720 'time-exceeded' => 1,
721 'ttl-zero-during-transit' => 1,
722 'ttl-zero-during-reassembly' => 1,
723 'parameter-problem' => 1,
724 'ip-header-bad' => 1,
725 'required-option-missing' => 1,
726 'timestamp-request' => 1,
727 'timestamp-reply' => 1,
728 'address-mask-request' => 1,
729 'address-mask-reply' => 1,
732 # ip6tables -p icmpv6 -h
734 my $icmpv6_type_names = {
736 'destination-unreachable' => 1,
738 'communication-prohibited' => 1,
739 'address-unreachable' => 1,
740 'port-unreachable' => 1,
741 'packet-too-big' => 1,
742 'time-exceeded' => 1,
743 'ttl-zero-during-transit' => 1,
744 'ttl-zero-during-reassembly' => 1,
745 'parameter-problem' => 1,
747 'unknown-header-type' => 1,
748 'unknown-option' => 1,
751 'router-solicitation' => 1,
752 'router-advertisement' => 1,
753 'neighbor-solicitation' => 1,
754 'neighbour-solicitation' => 1,
755 'neighbor-advertisement' => 1,
756 'neighbour-advertisement' => 1,
760 sub init_firewall_macros
{
762 $pve_fw_parsed_macros = {};
765 my ($k, $macro) = @_;
766 my $lc_name = lc($k);
767 $pve_fw_macro_ipversion->{$k} = 0;
768 while (!ref($macro->[0])) {
769 my $desc = shift @$macro;
770 if ($desc eq 'ipv4only') {
771 $pve_fw_macro_ipversion->{$k} = 4;
772 } elsif ($desc eq 'ipv6only') {
773 $pve_fw_macro_ipversion->{$k} = 6;
775 $pve_fw_macro_descr->{$k} = $desc;
778 $pve_fw_preferred_macro_names->{$lc_name} = $k;
779 $pve_fw_parsed_macros->{$k} = $macro;
782 foreach my $k (keys %$pve_fw_macros) {
783 &$parse($k, $pve_fw_macros->{$k});
786 foreach my $k (keys %$pve_ipv6fw_macros) {
787 next if $pve_fw_parsed_macros->{$k};
788 &$parse($k, $pve_ipv6fw_macros->{$k});
789 $pve_fw_macro_ipversion->{$k} = 6;
793 init_firewall_macros
();
796 return wantarray ?
($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros;
801 sub get_etc_services
{
803 return $etc_services if $etc_services;
805 my $filename = "/etc/services";
807 my $fh = IO
::File-
>new($filename, O_RDONLY
);
809 warn "unable to read '$filename' - $!\n";
815 while (my $line = <$fh>) {
817 next if $line =~m/^#/;
818 next if ($line =~m/^\s*$/);
820 if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) {
821 $services->{byid
}->{$2}->{name
} = $1;
822 $services->{byid
}->{$2}->{port
} = $2;
823 $services->{byid
}->{$2}->{$3} = 1;
824 $services->{byname
}->{$1} = $services->{byid
}->{$2};
830 $etc_services = $services;
833 return $etc_services;
838 sub get_etc_protocols
{
839 return $etc_protocols if $etc_protocols;
841 my $filename = "/etc/protocols";
843 my $fh = IO
::File-
>new($filename, O_RDONLY
);
845 warn "unable to read '$filename' - $!\n";
851 while (my $line = <$fh>) {
853 next if $line =~m/^#/;
854 next if ($line =~m/^\s*$/);
856 if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) {
857 $protocols->{byid
}->{$2}->{name
} = $1;
858 $protocols->{byname
}->{$1} = $protocols->{byid
}->{$2};
864 # add special case for ICMP v6
865 $protocols->{byid
}->{icmpv6
}->{name
} = "icmpv6";
866 $protocols->{byname
}->{icmpv6
} = $protocols->{byid
}->{icmpv6
};
868 $etc_protocols = $protocols;
870 return $etc_protocols;
873 my $ipv4_mask_hash_localnet = {
875 '255.255.128.0' => 17,
876 '255.255.192.0' => 18,
877 '255.255.224.0' => 19,
878 '255.255.240.0' => 20,
879 '255.255.248.0' => 21,
880 '255.255.252.0' => 22,
881 '255.255.254.0' => 23,
882 '255.255.255.0' => 24,
883 '255.255.255.128' => 25,
884 '255.255.255.192' => 26,
885 '255.255.255.224' => 27,
886 '255.255.255.240' => 28,
887 '255.255.255.248' => 29,
888 '255.255.255.252' => 30,
894 my ($new_value) = @_;
896 $__local_network = $new_value if defined($new_value);
898 return $__local_network if defined($__local_network);
901 my $nodename = PVE
::INotify
::nodename
();
903 my $ip = PVE
::Cluster
::remote_node_ip
($nodename);
905 my $testip = Net
::IP-
>new($ip);
907 my $isv6 = $testip->version == 6;
908 my $routes = $isv6 ? PVE
::ProcFSTools
::read_proc_net_ipv6_route
()
909 : PVE
::ProcFSTools
::read_proc_net_route
();
910 foreach my $entry (@$routes) {
913 $mask = $entry->{prefix
};
915 $mask = $ipv4_mask_hash_localnet->{$entry->{mask
}};
916 next if !defined($mask);
918 my $cidr = "$entry->{dest}/$mask";
919 my $testnet = Net
::IP-
>new($cidr);
920 if ($testnet->overlaps($testip) == $Net::IP
::IP_B_IN_A_OVERLAP
) {
921 $__local_network = $cidr;
928 return $__local_network;
931 # ipset names are limited to 31 characters,
932 # and we use '-v4' or '-v6' to indicate IP versions,
933 # and we use '_swap' suffix for atomic update,
934 # for example PVEFW-${VMID}-${ipset_name}_swap
936 my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
938 sub compute_ipset_chain_name
{
939 my ($vmid, $ipset_name, $ipversion) = @_;
941 $vmid = 0 if !defined($vmid);
943 my $id = "$vmid-${ipset_name}-v$ipversion";
945 if (length($id) > $max_iptables_ipset_name_length) {
946 $id = PVE
::Tools
::fnv31a_hex
($id);
952 sub compute_ipfilter_ipset_name
{
955 return "ipfilter-$iface";
958 sub parse_address_list
{
961 if ($str =~ m/^(\+)(\S+)$/) { # ipset ref
962 die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1);
966 if ($str =~ m/^${ip_alias_pattern}$/) {
967 die "alias name too long\n" if length($str) > $max_alias_name_length;
975 foreach my $elem (split(/,/, $str)) {
977 my $ip = Net
::IP-
>new($elem);
979 my $err = Net
::IP
::Error
();
980 die "invalid IP address: $err\n";
982 $iprange = 1 if $elem =~ m/-/;
984 my $new_ipversion = Net
::IP
::ip_is_ipv6
($ip->ip()) ?
6 : 4;
986 die "detected mixed ipv4/ipv6 addresses in address list '$str'\n"
987 if $ipversion && ($new_ipversion != $ipversion);
989 $ipversion = $new_ipversion;
992 die "you can't use a range in a list\n" if $iprange && $count > 1;
997 sub parse_port_name_number_or_range
{
1000 my $services = PVE
::Firewall
::get_etc_services
();
1004 foreach my $item (split(/,/, $str)) {
1006 if ($item =~ m/^(\d+):(\d+)$/) {
1007 my ($port1, $port2) = ($1, $2);
1008 die "invalid port '$port1'\n" if $port1 > 65535;
1009 die "invalid port '$port2'\n" if $port2 > 65535;
1010 } elsif ($item =~ m/^(\d+)$/) {
1012 die "invalid port '$port'\n" if $port > 65535;
1014 if ($icmp_type_names->{$item}) {
1016 } elsif ($icmpv6_type_names->{$item}) {
1019 die "invalid port '$item'\n" if !$services->{byname
}->{$item};
1024 die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1;
1029 PVE
::JSONSchema
::register_format
('pve-fw-port-spec', \
&pve_fw_verify_port_spec
);
1030 sub pve_fw_verify_port_spec
{
1033 parse_port_name_number_or_range
($portstr);
1038 PVE
::JSONSchema
::register_format
('pve-fw-addr-spec', \
&pve_fw_verify_addr_spec
);
1039 sub pve_fw_verify_addr_spec
{
1042 parse_address_list
($list);
1047 PVE
::JSONSchema
::register_format
('pve-fw-protocol-spec', \
&pve_fw_verify_protocol_spec
);
1048 sub pve_fw_verify_protocol_spec
{
1051 my $protocols = get_etc_protocols
();
1053 die "unknown protocol '$proto'\n" if $proto &&
1054 !(defined($protocols->{byname
}->{$proto}) ||
1055 defined($protocols->{byid
}->{$proto}));
1061 # helper function for API
1063 sub copy_opject_with_digest
{
1066 my $sha = Digest
::SHA-
>new('sha1');
1069 foreach my $k (sort keys %$object) {
1070 my $v = $object->{$k};
1071 next if !defined($v);
1073 $sha->add($k, ':', $v, "\n");
1076 my $digest = $sha->hexdigest;
1078 $res->{digest
} = $digest;
1080 return wantarray ?
($res, $digest) : $res;
1083 sub copy_list_with_digest
{
1086 my $sha = Digest
::SHA-
>new('sha1');
1089 foreach my $entry (@$list) {
1091 foreach my $k (sort keys %$entry) {
1092 my $v = $entry->{$k};
1093 next if !defined($v);
1095 # Note: digest ignores refs ($rule->{errors})
1096 # since Digest::SHA expects a series of bytes,
1097 # we have to encode the value here to prevent errors when
1098 # using utf8 characters (eg. in comments)
1099 $sha->add($k, ':', encode_utf8
($v), "\n") if !ref($v); ;
1104 my $digest = $sha->hexdigest;
1106 foreach my $entry (@$res) {
1107 $entry->{digest
} = $digest;
1110 return wantarray ?
($res, $digest) : $res;
1113 my $rule_properties = {
1115 description
=> "Update rule at position <pos>.",
1120 digest
=> get_standard_option
('pve-config-digest'),
1124 enum
=> ['in', 'out', 'group'],
1127 description
=> "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.",
1130 pattern
=> $security_group_name_pattern,
1139 iface
=> get_standard_option
('pve-iface', { optional
=> 1 }),
1141 type
=> 'string', format
=> 'pve-fw-addr-spec',
1145 type
=> 'string', format
=> 'pve-fw-addr-spec',
1149 type
=> 'string', format
=> 'pve-fw-protocol-spec',
1158 type
=> 'string', format
=> 'pve-fw-port-spec',
1162 type
=> 'string', format
=> 'pve-fw-port-spec',
1171 sub add_rule_properties
{
1172 my ($properties) = @_;
1174 foreach my $k (keys %$rule_properties) {
1175 my $h = $rule_properties->{$k};
1176 # copy data, so that we can modify later without side effects
1177 foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; }
1183 sub delete_rule_properties
{
1184 my ($rule, $delete_str) = @_;
1186 foreach my $opt (PVE
::Tools
::split_list
($delete_str)) {
1187 raise_param_exc
({ 'delete' => "no such property ('$opt')"})
1188 if !defined($rule_properties->{$opt});
1189 raise_param_exc
({ 'delete' => "unable to delete required property '$opt'"})
1190 if $opt eq 'type' || $opt eq 'action';
1191 delete $rule->{$opt};
1197 my $apply_macro = sub {
1198 my ($macro_name, $param, $verify, $ipversion) = @_;
1200 my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
1201 die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
1203 if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
1204 $macro_rules = $pve_ipv6fw_macros->{$macro_name};
1207 # skip macros which are specific to another ipversion
1208 if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
1209 return if $ipversion != $required;
1214 foreach my $templ (@$macro_rules) {
1216 my $param_used = {};
1217 foreach my $k (keys %$templ) {
1218 my $v = $templ->{$k};
1219 if ($v eq 'PARAM') {
1221 $param_used->{$k} = 1;
1222 } elsif ($v eq 'DEST') {
1223 $v = $param->{dest
};
1224 $param_used->{dest
} = 1;
1225 } elsif ($v eq 'SOURCE') {
1226 $v = $param->{source
};
1227 $param_used->{source
} = 1;
1231 my $msg = "missing parameter '$k' in macro '$macro_name'";
1232 raise_param_exc
({ macro => $msg }) if $verify;
1237 foreach my $k (keys %$param) {
1238 next if $k eq 'macro';
1239 next if !defined($param->{$k});
1240 next if $param_used->{$k};
1241 if (defined($rule->{$k})) {
1242 if ($rule->{$k} ne $param->{$k}) {
1243 my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')";
1244 raise_param_exc
({ $k => $msg }) if $verify;
1248 $rule->{$k} = $param->{$k};
1251 push @$rules, $rule;
1257 my $rule_env_iface_lookup = {
1266 my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
1268 my $allow_groups = $rule_env eq 'group' ?
0 : 1;
1270 my $allow_iface = $rule_env_iface_lookup->{$rule_env};
1271 die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
1273 my $errors = $rule->{errors
} || {};
1275 my $error_count = 0;
1277 my $add_error = sub {
1278 my ($param, $msg) = @_;
1280 raise_param_exc
({ $param => $msg }) if !$noerr;
1282 $errors->{$param} = $msg if !$errors->{$param};
1286 my $set_ip_version = sub {
1289 die "detected mixed ipv4/ipv6 adresses in rule\n"
1290 if $ipversion && ($vers != $ipversion);
1295 my $check_ipset_or_alias_property = sub {
1296 my ($name, $expected_ipversion) = @_;
1298 if (my $value = $rule->{$name}) {
1299 if ($value =~ m/^\+/) {
1300 if ($value =~ m/^\+(${ipset_name_pattern})$/) {
1301 &$add_error($name, "no such ipset '$1'")
1302 if !($cluster_conf->{ipset
}->{$1} || ($fw_conf && $fw_conf->{ipset
}->{$1}));
1305 &$add_error($name, "invalid ipset name '$value'");
1307 } elsif ($value =~ m/^${ip_alias_pattern}$/){
1308 my $alias = lc($value);
1309 &$add_error($name, "no such alias '$value'")
1310 if !($cluster_conf->{aliases
}->{$alias} || ($fw_conf && $fw_conf->{aliases
}->{$alias}));
1311 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1312 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1314 &$set_ip_version($e->{ipversion
});
1319 my $type = $rule->{type
};
1320 my $action = $rule->{action
};
1322 &$add_error('type', "missing property") if !$type;
1323 &$add_error('action', "missing property") if !$action;
1326 if ($type eq 'in' || $type eq 'out') {
1327 &$add_error('action', "unknown action '$action'")
1328 if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/);
1329 } elsif ($type eq 'group') {
1330 &$add_error('type', "security groups not allowed")
1332 &$add_error('action', "invalid characters in security group name")
1333 if $action && ($action !~ m/^${security_group_name_pattern}$/);
1335 &$add_error('type', "unknown rule type '$type'");
1339 if ($rule->{iface
}) {
1340 &$add_error('type', "parameter -i not allowed for this rule type")
1342 eval { PVE
::JSONSchema
::pve_verify_iface
($rule->{iface
}); };
1343 &$add_error('iface', $@) if $@;
1344 if ($rule_env eq 'vm' || $rule_env eq 'ct') {
1345 &$add_error('iface', "value does not match the regex pattern 'net\\d+'")
1346 if $rule->{iface
} !~ m/^net(\d+)$/;
1350 if ($rule->{macro}) {
1351 if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) {
1352 $rule->{macro} = $preferred_name;
1354 &$add_error('macro', "unknown macro '$rule->{macro}'");
1358 if ($rule->{proto
}) {
1359 eval { pve_fw_verify_protocol_spec
($rule->{proto
}); };
1360 &$add_error('proto', $@) if $@;
1361 &$set_ip_version(4) if $rule->{proto
} eq 'icmp';
1362 &$set_ip_version(6) if $rule->{proto
} eq 'icmpv6';
1365 if ($rule->{dport
}) {
1366 eval { parse_port_name_number_or_range
($rule->{dport
}); };
1367 &$add_error('dport', $@) if $@;
1368 &$add_error('proto', "missing property - 'dport' requires this property")
1372 if ($rule->{sport
}) {
1373 eval { parse_port_name_number_or_range
($rule->{sport
}); };
1374 &$add_error('sport', $@) if $@;
1375 &$add_error('proto', "missing property - 'sport' requires this property")
1379 if ($rule->{source
}) {
1381 my $source_ipversion = parse_address_list
($rule->{source
});
1382 &$set_ip_version($source_ipversion);
1384 &$add_error('source', $@) if $@;
1385 &$check_ipset_or_alias_property('source', $ipversion);
1388 if ($rule->{dest
}) {
1390 my $dest_ipversion = parse_address_list
($rule->{dest
});
1391 &$set_ip_version($dest_ipversion);
1393 &$add_error('dest', $@) if $@;
1394 &$check_ipset_or_alias_property('dest', $ipversion);
1397 $rule->{ipversion
} = $ipversion if $ipversion;
1399 if ($rule->{macro} && !$error_count) {
1400 eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
1402 if (ref($err) eq "PVE::Exception" && $err->{errors
}) {
1403 my $eh = $err->{errors
};
1404 foreach my $p (keys %$eh) {
1405 &$add_error($p, $eh->{$p});
1408 &$add_error('macro', "$err");
1413 $rule->{errors
} = $errors if $error_count;
1418 sub copy_rule_data
{
1419 my ($rule, $param) = @_;
1421 foreach my $k (keys %$rule_properties) {
1422 if (defined(my $v = $param->{$k})) {
1423 if ($v eq '' || $v eq '-') {
1434 sub rules_modify_permissions
{
1435 my ($rule_env) = @_;
1437 if ($rule_env eq 'host') {
1439 check
=> ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
1441 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1443 check
=> ['perm', '/', [ 'Sys.Modify' ]],
1445 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1447 check
=> ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
1454 sub rules_audit_permissions
{
1455 my ($rule_env) = @_;
1457 if ($rule_env eq 'host') {
1459 check
=> ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
1461 } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
1463 check
=> ['perm', '/', [ 'Sys.Audit' ]],
1465 } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
1467 check
=> ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
1475 my $bridge_firewall_enabled = 0;
1477 sub enable_bridge_firewall
{
1479 return if $bridge_firewall_enabled; # only once
1481 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
1482 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
1484 # make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
1485 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/ipv4/tcp_syncookies", "1");
1487 $bridge_firewall_enabled = 1;
1490 my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
1492 sub iptables_restore_cmdlist
{
1495 run_command
("/sbin/iptables-restore -n", input
=> $cmdlist, errmsg
=> "iptables_restore_cmdlist");
1498 sub ip6tables_restore_cmdlist
{
1501 run_command
("/sbin/ip6tables-restore -n", input
=> $cmdlist, errmsg
=> "iptables_restore_cmdlist");
1504 sub ipset_restore_cmdlist
{
1507 run_command
("/sbin/ipset restore", input
=> $cmdlist, errmsg
=> "ipset_restore_cmdlist");
1510 sub iptables_get_chains
{
1511 my ($iptablescmd) = @_;
1513 $iptablescmd = "iptables" if !$iptablescmd;
1517 # check what chains we want to track
1518 my $is_pvefw_chain = sub {
1521 return 1 if $name =~ m/^PVEFW-\S+$/;
1523 return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/;
1525 return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/;
1527 return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/;
1528 return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/;
1540 return if $line =~ m/^#/;
1541 return if $line =~ m/^\s*$/;
1543 if ($line =~ m/^\*(\S+)$/) {
1548 return if $table ne 'filter';
1550 if ($line =~ m/^:(\S+)\s/) {
1552 return if !&$is_pvefw_chain($chain);
1553 $res->{$chain} = "unknown";
1554 } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) {
1555 my ($chain, $sig) = ($1, $2);
1556 return if !&$is_pvefw_chain($chain);
1557 $res->{$chain} = $sig;
1558 } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
1561 # simply ignore the rest
1566 run_command
("/sbin/$iptablescmd-save", outfunc
=> $parser);
1568 return wantarray ?
($res, $hooks) : $res;
1571 sub iptables_chain_digest
{
1573 my $digest = Digest
::SHA-
>new('sha1');
1574 foreach my $rule (@$rules) { # order is important
1575 $digest->add($rule);
1577 return $digest->b64digest;
1580 sub ipset_chain_digest
{
1583 my $digest = Digest
::SHA-
>new('sha1');
1584 foreach my $rule (sort @$rules) { # note: sorted
1585 $digest->add($rule);
1587 return $digest->b64digest;
1590 sub ipset_get_chains
{
1598 return if $line =~ m/^#/;
1599 return if $line =~ m/^\s*$/;
1600 if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
1602 $line =~ s/\s+$//; # delete trailing white space
1603 push @{$chains->{$chain}}, $line;
1605 # simply ignore the rest
1610 run_command
("/sbin/ipset save", outfunc
=> $parser);
1612 # compute digest for each chain
1613 foreach my $chain (keys %$chains) {
1614 $res->{$chain} = ipset_chain_digest
($chains->{$chain});
1620 sub ruleset_generate_cmdstr
{
1621 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
1623 return if defined($rule->{enable
}) && !$rule->{enable
};
1624 return if $rule->{errors
};
1626 die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
1628 my $nbdport = defined($rule->{dport
}) ? parse_port_name_number_or_range
($rule->{dport
}) : 0;
1629 my $nbsport = defined($rule->{sport
}) ? parse_port_name_number_or_range
($rule->{sport
}) : 0;
1633 push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in
};
1634 push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out
};
1636 my $source = $rule->{source
};
1637 my $dest = $rule->{dest
};
1640 if ($source =~ m/^\+/) {
1641 if ($source =~ m/^\+(${ipset_name_pattern})$/) {
1643 if ($fw_conf && $fw_conf->{ipset
}->{$name}) {
1644 my $ipset_chain = compute_ipset_chain_name
($fw_conf->{vmid
}, $name, $ipversion);
1645 push @cmd, "-m set --match-set ${ipset_chain} src";
1646 } elsif ($cluster_conf && $cluster_conf->{ipset
}->{$name}) {
1647 my $ipset_chain = compute_ipset_chain_name
(0, $name, $ipversion);
1648 push @cmd, "-m set --match-set ${ipset_chain} src";
1650 die "no such ipset '$name'\n";
1653 die "invalid security group name '$source'\n";
1655 } elsif ($source =~ m/^${ip_alias_pattern}$/){
1656 my $alias = lc($source);
1657 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1658 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1659 die "no such alias '$source'\n" if !$e;
1660 push @cmd, "-s $e->{cidr}";
1661 } elsif ($source =~ m/\-/){
1662 push @cmd, "-m iprange --src-range $source";
1664 push @cmd, "-s $source";
1669 if ($dest =~ m/^\+/) {
1670 if ($dest =~ m/^\+(${ipset_name_pattern})$/) {
1672 if ($fw_conf && $fw_conf->{ipset
}->{$name}) {
1673 my $ipset_chain = compute_ipset_chain_name
($fw_conf->{vmid
}, $name, $ipversion);
1674 push @cmd, "-m set --match-set ${ipset_chain} dst";
1675 } elsif ($cluster_conf && $cluster_conf->{ipset
}->{$name}) {
1676 my $ipset_chain = compute_ipset_chain_name
(0, $name, $ipversion);
1677 push @cmd, "-m set --match-set ${ipset_chain} dst";
1679 die "no such ipset '$name'\n";
1682 die "invalid security group name '$dest'\n";
1684 } elsif ($dest =~ m/^${ip_alias_pattern}$/){
1685 my $alias = lc($dest);
1686 my $e = $fw_conf ?
$fw_conf->{aliases
}->{$alias} : undef;
1687 $e = $cluster_conf->{aliases
}->{$alias} if !$e && $cluster_conf;
1688 die "no such alias '$dest'\n" if !$e;
1689 push @cmd, "-d $e->{cidr}";
1690 } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){
1691 push @cmd, "-m iprange --dst-range $dest";
1693 push @cmd, "-d $dest";
1697 if ($rule->{proto
}) {
1698 push @cmd, "-p $rule->{proto}";
1701 $multiport++ if $nbdport > 1;
1702 $multiport++ if $nbsport > 1;
1704 push @cmd, "--match multiport" if $multiport;
1706 die "multiport: option '--sports' cannot be used together with '--dports'\n"
1707 if ($multiport == 2) && ($rule->{dport
} ne $rule->{sport
});
1709 if ($rule->{dport
}) {
1710 if ($rule->{proto
} && $rule->{proto
} eq 'icmp') {
1711 # Note: we use dport to store --icmp-type
1712 die "unknown icmp-type '$rule->{dport}'\n"
1713 if $rule->{dport
} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport
}});
1714 push @cmd, "-m icmp --icmp-type $rule->{dport}";
1715 } elsif ($rule->{proto
} && $rule->{proto
} eq 'icmpv6') {
1716 # Note: we use dport to store --icmpv6-type
1717 die "unknown icmpv6-type '$rule->{dport}'\n"
1718 if $rule->{dport
} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport
}});
1719 push @cmd, "-m icmpv6 --icmpv6-type $rule->{dport}";
1722 if ($multiport == 2) {
1723 push @cmd, "--ports $rule->{dport}";
1725 push @cmd, "--dports $rule->{dport}";
1728 push @cmd, "--dport $rule->{dport}";
1733 if ($rule->{sport
}) {
1735 push @cmd, "--sports $rule->{sport}" if $multiport != 2;
1737 push @cmd, "--sport $rule->{sport}";
1740 } elsif ($rule->{dport
} || $rule->{sport
}) {
1741 die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport
};
1742 die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport
};
1745 push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype
};
1747 if (my $action = $rule->{action
}) {
1748 $action = $actions->{$action} if defined($actions->{$action});
1749 $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK';
1750 push @cmd, $goto ?
"-g $action" : "-j $action";
1753 return scalar(@cmd) ?
join(' ', @cmd) : undef;
1756 sub ruleset_generate_rule
{
1757 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
1761 if ($rule->{macro}) {
1762 $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
1767 # update all or nothing
1770 foreach my $tmp (@$rules) {
1771 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $ipversion, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
1772 push @cmds, $cmdstr;
1776 foreach my $cmdstr (@cmds) {
1777 ruleset_addrule
($ruleset, $chain, $cmdstr);
1781 sub ruleset_generate_rule_insert
{
1782 my ($ruleset, $chain, $ipversion, $rule, $actions, $goto) = @_;
1784 die "implement me" if $rule->{macro}; # not implemented, because not needed so far
1786 if (my $cmdstr = ruleset_generate_cmdstr
($ruleset, $chain, $ipversion, $rule, $actions, $goto)) {
1787 ruleset_insertrule
($ruleset, $chain, $cmdstr);
1791 sub ruleset_create_chain
{
1792 my ($ruleset, $chain) = @_;
1794 die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28;
1795 die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format
1797 die "chain '$chain' already exists\n" if $ruleset->{$chain};
1799 $ruleset->{$chain} = [];
1802 sub ruleset_chain_exist
{
1803 my ($ruleset, $chain) = @_;
1805 return $ruleset->{$chain} ?
1 : undef;
1808 sub ruleset_addrule
{
1809 my ($ruleset, $chain, $rule) = @_;
1811 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1813 push @{$ruleset->{$chain}}, "-A $chain $rule";
1816 sub ruleset_insertrule
{
1817 my ($ruleset, $chain, $rule) = @_;
1819 die "no such chain '$chain'\n" if !$ruleset->{$chain};
1821 unshift @{$ruleset->{$chain}}, "-A $chain $rule";
1824 sub get_log_rule_base
{
1825 my ($chain, $vmid, $msg, $loglevel) = @_;
1827 die "internal error - no log level" if !defined($loglevel);
1829 $vmid = 0 if !defined($vmid);
1831 # Note: we use special format for prefix to pass further
1832 # info to log daemon (VMID, LOGVELEL and CHAIN)
1834 return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
1837 sub ruleset_addlog {
1838 my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_;
1840 return if !defined($loglevel);
1842 my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel);
1844 $logrule = "$rule $logrule" if defined($rule);
1846 ruleset_addrule($ruleset, $chain, $logrule);
1849 sub ruleset_add_chain_policy {
1850 my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
1852 if ($policy eq 'ACCEPT') {
1854 ruleset_generate_rule($ruleset, $chain, $ipversion, { action => 'ACCEPT' },
1855 { ACCEPT => $accept_action});
1857 } elsif ($policy eq 'DROP') {
1859 ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop
");
1861 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1863 ruleset_addrule($ruleset, $chain, "-j DROP
");
1864 } elsif ($policy eq 'REJECT') {
1865 ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject
");
1867 ruleset_addlog($ruleset, $chain, $vmid, "policy
$policy: ", $loglevel);
1869 ruleset_addrule($ruleset, $chain, "-g PVEFW-reject
");
1872 die "internal error
: unknown policy
'$policy'";
1876 sub ruleset_chain_add_ndp {
1877 my ($ruleset, $chain, $ipversion, $options, $direction) = @_;
1878 return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
1880 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type router-solicitation
-j ACCEPT
");
1881 if ($direction ne 'OUT' || $options->{radv}) {
1882 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type router-advertisement
-j ACCEPT
");
1884 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type neighbor-solicitation
-j ACCEPT
");
1885 ruleset_addrule($ruleset, $chain, "-p icmpv6
--icmpv6-type neighbor-advertisement
-j ACCEPT
");
1888 sub ruleset_chain_add_conn_filters {
1889 my ($ruleset, $chain, $accept) = @_;
1891 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
-j DROP
");
1892 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate RELATED
,ESTABLISHED
-j
$accept");
1895 sub ruleset_chain_add_input_filters {
1896 my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
1898 if ($cluster_conf->{ipset}->{blacklist}){
1899 if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist
")) {
1900 ruleset_create_chain($ruleset, "PVEFW-blacklist
");
1901 ruleset_addlog($ruleset, "PVEFW-blacklist
", 0, "DROP
: ", $loglevel) if $loglevel;
1902 ruleset_addrule($ruleset, "PVEFW-blacklist
", "-j DROP
");
1904 my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
1905 ruleset_addrule($ruleset, $chain, "-m set
--match-set
${ipset_chain
} src
-j PVEFW-blacklist
");
1908 if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) {
1909 if ($ipversion == 4) {
1910 ruleset_addrule($ruleset, $chain, "-m conntrack
--ctstate INVALID
,NEW
-j PVEFW-smurfs
");
1914 if ($options->{tcpflags}) {
1915 ruleset_addrule($ruleset, $chain, "-p tcp
-j PVEFW-tcpflags
");
1919 sub ruleset_create_vm_chain {
1920 my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
1922 ruleset_create_chain($ruleset, $chain);
1923 my $accept = generate_nfqueue($options);
1925 if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
1926 if ($ipversion == 4) {
1927 if ($direction eq 'OUT') {
1928 ruleset_generate_rule($ruleset, $chain, $ipversion,
1929 { action => 'PVEFW-SET-ACCEPT-MARK',
1930 proto => 'udp', sport => 68, dport => 67 });
1932 ruleset_generate_rule($ruleset, $chain, $ipversion,
1933 { action => 'ACCEPT',
1934 proto => 'udp', sport => 67, dport => 68 });
1936 } elsif ($ipversion == 6) {
1937 if ($direction eq 'OUT') {
1938 ruleset_generate_rule($ruleset, $chain, $ipversion,
1939 { action => 'PVEFW-SET-ACCEPT-MARK',
1940 proto => 'udp', sport => 546, dport => 547 });
1942 ruleset_generate_rule($ruleset, $chain, $ipversion,
1943 { action => 'ACCEPT',
1944 proto => 'udp', sport => 547, dport => 546 });
1950 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction);
1952 if ($direction eq 'OUT') {
1953 if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
1954 ruleset_addrule($ruleset, $chain, "-m mac
! --mac-source
$macaddr -j DROP
");
1956 if ($ipversion == 6 && !$options->{radv}) {
1957 ruleset_addrule($ruleset, $chain, '-p icmpv6 --icmpv6-type router-advertisement -j DROP');
1959 if ($ipfilter_ipset) {
1960 ruleset_addrule($ruleset, $chain, "-m set
! --match-set
$ipfilter_ipset src
-j DROP
");
1962 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
1966 sub ruleset_add_group_rule {
1967 my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_;
1969 my $group = $rule->{action};
1970 my $group_chain = "GROUP-
$group-$direction";
1971 if(!ruleset_chain_exist($ruleset, $group_chain)){
1972 generate_group_rules($ruleset, $cluster_conf, $group, $ipversion);
1975 if ($direction eq 'OUT' && $rule->{iface_out}) {
1976 ruleset_addrule($ruleset, $chain, "-o
$rule->{iface_out
} -j
$group_chain");
1977 } elsif ($direction eq 'IN' && $rule->{iface_in}) {
1978 ruleset_addrule($ruleset, $chain, "-i
$rule->{iface_in
} -j
$group_chain");
1980 ruleset_addrule($ruleset, $chain, "-j
$group_chain");
1983 ruleset_addrule($ruleset, $chain, "-m mark
--mark
1 -j
$action");
1986 sub ruleset_generate_vm_rules {
1987 my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion) = @_;
1989 my $lc_direction = lc($direction);
1991 my $in_accept = generate_nfqueue($options);
1993 foreach my $rule (@$rules) {
1994 next if $rule->{iface} && $rule->{iface} ne $netid;
1995 next if !$rule->{enable} || $rule->{errors};
1996 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
1998 if ($rule->{type} eq 'group') {
1999 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction,
2000 $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion);
2002 next if $rule->{type} ne $lc_direction;
2004 if ($direction eq 'OUT') {
2005 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2006 { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" },
2007 undef, $cluster_conf, $vmfw_conf);
2009 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2010 { ACCEPT => $in_accept , REJECT => "PVEFW-reject
" },
2011 undef, $cluster_conf, $vmfw_conf);
2019 sub generate_nfqueue {
2022 if ($options->{ips}) {
2023 my $action = "NFQUEUE
";
2024 if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) {
2025 if (defined($3) && defined($1)) {
2026 $action .= " --queue-balance
$1:$3";
2027 } elsif (defined($1)) {
2028 $action .= " --queue-num
$1";
2031 $action .= " --queue-bypass
" if $feature_ipset_nomatch; #need kernel 3.10
2038 sub ruleset_generate_vm_ipsrules {
2039 my ($ruleset, $options, $direction, $iface) = @_;
2041 if ($options->{ips} && $direction eq 'IN') {
2042 my $nfqueue = generate_nfqueue($options);
2044 if (!ruleset_chain_exist($ruleset, "PVEFW-IPS
")) {
2045 ruleset_create_chain($ruleset, "PVEFW-IPS
");
2048 ruleset_addrule($ruleset, "PVEFW-IPS
", "-m physdev
--physdev-out
$iface --physdev-is-bridged
-j
$nfqueue");
2052 sub generate_tap_rules_direction {
2053 my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_;
2055 my $lc_direction = lc($direction);
2057 my $rules = $vmfw_conf->{rules};
2059 my $options = $vmfw_conf->{options};
2060 my $loglevel = get_option_log_level($options, "log_level_
${lc_direction
}");
2062 my $tapchain = "$iface-$direction";
2064 my $ipfilter_name = compute_ipfilter_ipset_name($netid);
2065 my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
2066 if $vmfw_conf->{ipset}->{$ipfilter_name};
2068 # create chain with mac and ip filter
2069 ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
2071 if ($options->{enable}) {
2072 ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion);
2074 ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
2079 if ($direction eq 'OUT') {
2080 $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
2082 $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
2085 my $accept = generate_nfqueue($options);
2086 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : $accept;
2087 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
2089 my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK
" : 'ACCEPT';
2090 ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
2093 # plug the tap chain to bridge chain
2094 if ($direction eq 'IN') {
2095 ruleset_addrule($ruleset, "PVEFW-FWBR-IN
",
2096 "-m physdev
--physdev-is-bridged
--physdev-out
$iface -j
$tapchain");
2098 ruleset_addrule($ruleset, "PVEFW-FWBR-OUT
",
2099 "-m physdev
--physdev-is-bridged
--physdev-in
$iface -j
$tapchain");
2103 sub enable_host_firewall {
2104 my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
2106 my $options = $hostfw_conf->{options};
2107 my $cluster_options = $cluster_conf->{options};
2108 my $rules = $hostfw_conf->{rules};
2109 my $cluster_rules = $cluster_conf->{rules};
2111 # host inbound firewall
2112 my $chain = "PVEFW-HOST-IN
";
2113 ruleset_create_chain($ruleset, $chain);
2115 my $loglevel = get_option_log_level($options, "log_level_in
");
2117 ruleset_addrule($ruleset, $chain, "-i lo
-j ACCEPT
");
2119 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options);
2120 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2121 ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
2123 # we use RETURN because we need to check also tap rules
2124 my $accept_action = 'RETURN';
2126 ruleset_addrule($ruleset, $chain, "-p igmp
-j
$accept_action"); # important for multicast
2128 # add host rules first, so that cluster wide rules can be overwritten
2129 foreach my $rule (@$rules, @$cluster_rules) {
2130 next if !$rule->{enable} || $rule->{errors};
2131 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2133 $rule->{iface_in} = $rule->{iface} if $rule->{iface};
2136 if ($rule->{type} eq 'group') {
2137 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
2138 } elsif ($rule->{type} eq 'in') {
2139 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2140 { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" },
2141 undef, $cluster_conf, $hostfw_conf);
2145 delete $rule->{iface_in};
2148 # allow standard traffic for management ipset (includes cluster network)
2149 my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management
", $ipversion);
2150 my $mngmntsrc = "-m set
--match-set
${mngmnt_ipset_chain
} src
";
2151 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
8006 -j
$accept_action"); # PVE API
2152 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
5900:5999 -j
$accept_action"); # PVE VNC Console
2153 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
3128 -j
$accept_action"); # SPICE Proxy
2154 ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp
--dport
22 -j
$accept_action"); # SSH
2156 my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
2157 my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
2160 if ($localnet && ($ipversion == $localnet_ver)) {
2161 my $corosync_rule = "-p udp
--dport
5404:5405 -j
$accept_action";
2162 ruleset_addrule($ruleset, $chain, "-s
$localnet -d
$localnet $corosync_rule");
2163 ruleset_addrule($ruleset, $chain, "-s
$localnet -m addrtype
--dst-type MULTICAST
$corosync_rule");
2166 # implement input policy
2167 my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
2168 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
2170 # host outbound firewall
2171 $chain = "PVEFW-HOST-OUT
";
2172 ruleset_create_chain($ruleset, $chain);
2174 $loglevel = get_option_log_level($options, "log_level_out
");
2176 ruleset_addrule($ruleset, $chain, "-o lo
-j ACCEPT
");
2178 ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options);
2179 ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
2181 # we use RETURN because we may want to check other thigs later
2182 $accept_action = 'RETURN';
2184 ruleset_addrule($ruleset, $chain, "-p igmp
-j
$accept_action"); # important for multicast
2186 # add host rules first, so that cluster wide rules can be overwritten
2187 foreach my $rule (@$rules, @$cluster_rules) {
2188 next if !$rule->{enable} || $rule->{errors};
2189 next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
2191 $rule->{iface_out} = $rule->{iface} if $rule->{iface};
2193 if ($rule->{type} eq 'group') {
2194 ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
2195 } elsif ($rule->{type} eq 'out') {
2196 ruleset_generate_rule($ruleset, $chain, $ipversion,
2197 $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject
" },
2198 undef, $cluster_conf, $hostfw_conf);
2202 delete $rule->{iface_out};
2205 # allow standard traffic on cluster network
2206 if ($localnet && ($ipversion == $localnet_ver)) {
2207 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
8006 -j
$accept_action"); # PVE API
2208 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
22 -j
$accept_action"); # SSH
2209 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
5900:5999 -j
$accept_action"); # PVE VNC Console
2210 ruleset_addrule($ruleset, $chain, "-d
$localnet -p tcp
--dport
3128 -j
$accept_action"); # SPICE Proxy
2212 my $corosync_rule = "-p udp
--dport
5404:5405 -j
$accept_action";
2213 ruleset_addrule($ruleset, $chain, "-d
$localnet $corosync_rule");
2214 ruleset_addrule($ruleset, $chain, "-m addrtype
--dst-type MULTICAST
$corosync_rule");
2217 # implement output policy
2218 $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
2219 ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
2221 ruleset_addrule($ruleset, "PVEFW-OUTPUT
", "-j PVEFW-HOST-OUT
");
2222 ruleset_addrule($ruleset, "PVEFW-INPUT
", "-j PVEFW-HOST-IN
");
2225 sub generate_group_rules {
2226 my ($ruleset, $cluster_conf, $group, $ipversion) = @_;
2228 my $rules = $cluster_conf->{groups}->{$group};
2231 warn "no such security group
'$group'\n";
2232 $rules = []; # create empty chain
2235 my $chain = "GROUP-
${group
}-IN
";
2237 ruleset_create_chain($ruleset, $chain);
2238 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
2240 foreach my $rule (@$rules) {
2241 next if $rule->{type} ne 'in';
2242 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
2243 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2244 { ACCEPT => "PVEFW-SET-ACCEPT-MARK
", REJECT => "PVEFW-reject
" },
2245 undef, $cluster_conf);
2248 $chain = "GROUP-
${group
}-OUT
";
2250 ruleset_create_chain($ruleset, $chain);
2251 ruleset_addrule($ruleset, $chain, "-j MARK
--set-mark
0"); # clear mark
2253 foreach my $rule (@$rules) {
2254 next if $rule->{type} ne 'out';
2255 next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
2256 # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
2257 # check also other tap rules later
2258 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
2259 { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject
" },
2260 undef, $cluster_conf);
2265 my $valid_netdev_names = {};
2266 for (my $i = 0; $i < $MAX_NETS; $i++) {
2267 $valid_netdev_names->{"net
$i"} = 1;
2271 my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
2273 my $orig_line = $line;
2277 # we can add single line comments to the end of the rule
2278 if ($line =~ s/#\s*(.*?)\s*$//) {
2279 $rule->{comment} = decode('utf8', $1);
2282 # we can disable a rule when prefixed with '|'
2284 $rule->{enable} = $line =~ s/^\|// ? 0 : 1;
2286 $line =~ s/^(\S+)\s+(\S+)\s*// ||
2287 die "unable to parse rule
: $line\n";
2289 $rule->{type} = lc($1);
2290 $rule->{action} = $2;
2292 if ($rule->{type} eq 'in' || $rule->{type} eq 'out') {
2293 if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) {
2294 $rule->{macro} = $1;
2295 $rule->{action} = $2;
2299 while (length($line)) {
2300 if ($line =~ s/^-i (\S+)\s*//) {
2301 $rule->{iface} = $1;
2305 last if $rule->{type} eq 'group';
2307 if ($line =~ s/^-p (\S+)\s*//) {
2308 $rule->{proto} = $1;
2312 if ($line =~ s/^-dport (\S+)\s*//) {
2313 $rule->{dport} = $1;
2317 if ($line =~ s/^-sport (\S+)\s*//) {
2318 $rule->{sport} = $1;
2321 if ($line =~ s/^-source (\S+)\s*//) {
2322 $rule->{source} = $1;
2325 if ($line =~ s/^-dest (\S+)\s*//) {
2333 die "unable to parse rule parameters
: $line\n" if length($line);
2335 $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1);
2336 if ($verbose && $rule->{errors}) {
2337 warn "$prefix - errors
in rule parameters
: $orig_line\n";
2338 foreach my $p (keys %{$rule->{errors}}) {
2339 warn " $p: $rule->{errors
}->{$p}\n";
2346 sub parse_vmfw_option {
2351 my $loglevels = "emerg
|alert
|crit
|err
|warning
|notice
|info
|debug
|nolog
";
2353 if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ips):\s*(0|1)\s*$/i) {
2356 } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
2358 $value = $2 ? lc($3) : '';
2359 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2362 } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) {
2366 die "can
't parse option '$line'\n"
2369 return ($opt, $value);
2372 sub parse_hostfw_option {
2377 my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
2379 if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp):\s*(0|1)\s*$/i) {
2382 } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
2384 $value = $2 ? lc($3) : '';
2385 } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
2389 die "can't parse option
'$line'\n"
2392 return ($opt, $value);
2395 sub parse_clusterfw_option {
2400 if ($line =~ m/^(enable):\s*(\d+)\s*$/i) {
2403 if (($value > 1) && ((time() - $value) > 60)) {
2406 } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
2410 die "can
't parse option '$line'\n"
2413 return ($opt, $value);
2417 my ($clusterfw_conf, $fw_conf, $cidr) = @_;
2419 my $alias = lc($cidr);
2420 my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
2421 $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
2423 die "no such alias '$cidr'\n" if !$e;;
2425 return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr};
2428 sub parse_ip_or_cidr {
2433 if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
2436 } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) {
2440 die "value does not look like a valid IP address or CIDR network\n";
2443 return wantarray ? ($cidr, $ipversion) : $cidr;
2449 # we can add single line comments to the end of the line
2450 my $comment = decode('utf8
', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
2452 if ($line =~ m/^(\S+)\s(\S+)$/) {
2453 my ($name, $cidr) = ($1, $2);
2456 ($cidr, $ipversion) = parse_ip_or_cidr($cidr);
2461 ipversion => $ipversion,
2463 $data->{comment} = $comment if $comment;
2470 sub generic_fw_config_parser {
2471 my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
2476 my $res = $empty_conf;
2478 while (defined(my $line = <$fh>)) {
2479 next if $line =~ m/^#/;
2480 next if $line =~ m/^\s*$/;
2484 my $linenr = $fh->input_line_number();
2485 my $prefix = "$filename (line $linenr)";
2487 if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
2488 $section = 'options
';
2492 if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) {
2493 $section = 'aliases
';
2497 if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
2498 $section = 'groups
';
2502 die "security group name too long\n" if length($group) > $max_group_name_length;
2503 die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/;
2506 ($section, $group, $comment) = undef;
2507 warn "$prefix: $err";
2511 $res->{$section}->{$group} = [];
2512 $res->{group_comments}->{$group} = decode('utf8
', $comment)
2517 if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) {
2522 if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) {
2527 die "ipset name too long\n" if length($group) > $max_ipset_name_length;
2528 die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
2531 ($section, $group, $comment) = undef;
2532 warn "$prefix: $err";
2536 $res->{$section}->{$group} = [];
2537 $res->{ipset_comments}->{$group} = decode('utf8
', $comment)
2543 warn "$prefix: skip line - no section\n";
2547 if ($section eq 'options
') {
2550 if ($rule_env eq 'cluster
') {
2551 ($opt, $value) = parse_clusterfw_option($line);
2552 } elsif ($rule_env eq 'host
') {
2553 ($opt, $value) = parse_hostfw_option($line);
2555 ($opt, $value) = parse_vmfw_option($line);
2557 $res->{options}->{$opt} = $value;
2559 warn "$prefix: $@" if $@;
2560 } elsif ($section eq 'aliases
') {
2562 my $data = parse_alias($line);
2563 $res->{aliases}->{lc($data->{name})} = $data;
2565 warn "$prefix: $@" if $@;
2566 } elsif ($section eq 'rules
') {
2568 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
2570 warn "$prefix: $err";
2573 push @{$res->{$section}}, $rule;
2574 } elsif ($section eq 'groups
') {
2576 eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group
', $verbose); };
2578 warn "$prefix: $err";
2581 push @{$res->{$section}->{$group}}, $rule;
2582 } elsif ($section eq 'ipset
') {
2583 # we can add single line comments to the end of the rule
2584 my $comment = decode('utf8
', $1) if $line =~ s/#\s*(.*?)\s*$//;
2586 $line =~ m/^(\!)?\s*(\S+)\s*$/;
2591 if ($nomatch && !$feature_ipset_nomatch) {
2592 $errors->{nomatch} = "nomatch not supported by kernel";
2596 if ($cidr =~ m/^${ip_alias_pattern}$/) {
2597 resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
2599 $cidr = parse_ip_or_cidr($cidr);
2604 $errors->{cidr} = $err;
2607 my $entry = { cidr => $cidr };
2608 $entry->{nomatch} = 1 if $nomatch;
2609 $entry->{comment} = $comment if $comment;
2610 $entry->{errors} = $errors if $errors;
2612 if ($verbose && $errors) {
2613 warn "$prefix - errors in ipset '$group': $line\n";
2614 foreach my $p (keys %{$errors}) {
2615 warn " $p: $errors->{$p}\n";
2619 push @{$res->{$section}->{$group}}, $entry;
2621 warn "$prefix: skip line - unknown section\n";
2629 sub parse_hostfw_config {
2630 my ($filename, $fh, $cluster_conf, $verbose) = @_;
2632 my $empty_conf = { rules => [], options => {}};
2634 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host
');
2637 sub parse_vmfw_config {
2638 my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
2645 ipset_comments => {},
2648 return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
2651 sub parse_clusterfw_config {
2652 my ($filename, $fh, $verbose) = @_;
2662 group_comments => {},
2664 ipset_comments => {},
2667 return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster
');
2671 my ($code, @param) = @_;
2675 my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param);
2682 sub read_local_vm_config {
2687 my $vmdata = { qemu => $qemu, lxc => $lxc };
2689 my $vmlist = PVE::Cluster::get_vmlist();
2690 return $vmdata if !$vmlist || !$vmlist->{ids};
2691 my $ids = $vmlist->{ids};
2693 foreach my $vmid (keys %$ids) {
2694 next if !$vmid; # skip VE0
2695 my $d = $ids->{$vmid};
2696 next if !$d->{node} || $d->{node} ne $nodename;
2697 next if !$d->{type};
2698 if ($d->{type} eq 'qemu
') {
2699 if ($have_qemu_server) {
2700 my $cfspath = PVE::QemuServer::cfs_config_path($vmid);
2701 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2702 $qemu->{$vmid} = $conf;
2705 } elsif ($d->{type} eq 'lxc
') {
2707 my $cfspath = PVE::LXC::cfs_config_path($vmid);
2708 if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
2709 $lxc->{$vmid} = $conf;
2718 sub load_vmfw_conf {
2719 my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
2723 $dir = $pvefw_conf_dir if !defined($dir);
2725 my $filename = "$dir/$vmid.fw";
2726 if (my $fh = IO::File->new($filename, O_RDONLY)) {
2727 $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
2728 $vmfw_conf->{vmid} = $vmid;
2734 my $format_rules = sub {
2735 my ($rules, $allow_iface) = @_;
2739 foreach my $rule (@$rules) {
2740 if ($rule->{type} eq 'in' || $rule->{type} eq 'out
' || $rule->{type} eq 'group
') {
2741 $raw .= '|' if defined($rule->{enable}) && !$rule->{enable};
2742 $raw .= uc($rule->{type});
2743 if ($rule->{macro}) {
2744 $raw .= " $rule->{macro}($rule->{action})";
2746 $raw .= " " . $rule->{action};
2748 if ($allow_iface && $rule->{iface}) {
2749 $raw .= " -i $rule->{iface}";
2752 if ($rule->{type} ne 'group
') {
2753 $raw .= " -source $rule->{source}" if $rule->{source};
2754 $raw .= " -dest $rule->{dest}" if $rule->{dest};
2755 $raw .= " -p $rule->{proto}" if $rule->{proto};
2756 $raw .= " -dport $rule->{dport}" if $rule->{dport};
2757 $raw .= " -sport $rule->{sport}" if $rule->{sport};
2760 $raw .= " # " . encode('utf8
', $rule->{comment})
2761 if $rule->{comment} && $rule->{comment} !~ m/^\s*$/;
2764 die "unknown rule type '$rule->{type
}'";
2771 my $format_options = sub {
2776 $raw .= "[OPTIONS]\n\n";
2777 foreach my $opt (keys %$options) {
2778 $raw .= "$opt: $options->{$opt}\n";
2785 my $format_aliases = sub {
2790 $raw .= "[ALIASES]\n\n";
2791 foreach my $k (keys %$aliases) {
2792 my $e = $aliases->{$k};
2793 $raw .= "$e->{name} $e->{cidr}";
2794 $raw .= " # " . encode('utf8
', $e->{comment})
2795 if $e->{comment} && $e->{comment} !~ m/^\s*$/;
2803 my $format_ipsets = sub {
2808 foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
2809 if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) {
2810 my $utf8comment = encode('utf8
', $comment);
2811 $raw .= "[IPSET $ipset] # $utf8comment\n\n";
2813 $raw .= "[IPSET $ipset]\n\n";
2815 my $options = $fw_conf->{ipset}->{$ipset};
2818 foreach my $entry (@$options) {
2819 $nethash->{$entry->{cidr}} = $entry;
2822 foreach my $cidr (sort keys %$nethash) {
2823 my $entry = $nethash->{$cidr};
2824 my $line = $entry->{nomatch} ? '!' : '';
2825 $line .= $entry->{cidr};
2826 $line .= " # " . encode('utf8
', $entry->{comment})
2827 if $entry->{comment} && $entry->{comment} !~ m/^\s*$/;
2837 sub save_vmfw_conf {
2838 my ($vmid, $vmfw_conf) = @_;
2842 my $options = $vmfw_conf->{options};
2843 $raw .= &$format_options($options) if $options && scalar(keys %$options);
2845 my $aliases = $vmfw_conf->{aliases};
2846 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
2848 $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset};
2850 my $rules = $vmfw_conf->{rules} || [];
2851 if ($rules && scalar(@$rules)) {
2852 $raw .= "[RULES]\n\n";
2853 $raw .= &$format_rules($rules, 1);
2857 my $filename = "$pvefw_conf_dir/$vmid.fw";
2859 mkdir $pvefw_conf_dir;
2860 PVE::Tools::file_set_contents($filename, $raw);
2866 sub remove_vmfw_conf {
2869 my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
2871 unlink $vmfw_conffile;
2874 sub clone_vmfw_conf {
2875 my ($vmid, $newid) = @_;
2877 my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
2878 my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
2880 if (-f $clonevm_conffile) {
2881 unlink $clonevm_conffile;
2883 if (-f $sourcevm_conffile) {
2884 my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
2885 PVE::Tools::file_set_contents($clonevm_conffile, $data);
2889 sub read_vm_firewall_configs {
2890 my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
2892 my $vmfw_configs = {};
2894 foreach my $vmid (keys %{$vmdata->{qemu}}) {
2895 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm
', $vmid, $dir, $verbose);
2896 next if !$vmfw_conf->{options}; # skip if file does not exists
2897 $vmfw_configs->{$vmid} = $vmfw_conf;
2899 foreach my $vmid (keys %{$vmdata->{lxc}}) {
2900 my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct
', $vmid, $dir, $verbose);
2901 next if !$vmfw_conf->{options}; # skip if file does not exists
2902 $vmfw_configs->{$vmid} = $vmfw_conf;
2905 return $vmfw_configs;
2908 sub get_option_log_level {
2909 my ($options, $k) = @_;
2911 my $v = $options->{$k};
2912 $v = $default_log_level if !defined($v);
2914 return undef if $v eq '' || $v eq 'nolog
';
2916 $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
2918 return $v if ($v >= 0) && ($v <= 7);
2920 warn "unknown log level ($k = '$v')\n";
2925 sub generate_std_chains {
2926 my ($ruleset, $options, $ipversion) = @_;
2928 my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
2930 my $loglevel = get_option_log_level($options, 'smurf_log_level
');
2934 if ($ipversion == 4) {
2935 # same as shorewall smurflog.
2936 $chain = 'PVEFW-smurflog
';
2937 $std_chains->{$chain} = [];
2939 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2940 push @{$std_chains->{$chain}}, "-j DROP";
2943 # same as shorewall logflags action.
2944 $loglevel = get_option_log_level($options, 'tcp_flags_log_level
');
2945 $chain = 'PVEFW-logflags
';
2946 $std_chains->{$chain} = [];
2948 # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
2949 push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
2950 push @{$std_chains->{$chain}}, "-j DROP";
2952 foreach my $chain (keys %$std_chains) {
2953 ruleset_create_chain($ruleset, $chain);
2954 foreach my $rule (@{$std_chains->{$chain}}) {
2956 ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
2958 ruleset_addrule($ruleset, $chain, $rule);
2964 sub generate_ipset_chains {
2965 my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_; #fixme
2967 foreach my $ipset (keys %{$fw_conf->{ipset}}) {
2969 my $options = $fw_conf->{ipset}->{$ipset};
2973 foreach my $entry (@$options) {
2974 next if $entry->{errors}; # skip entries with errors
2977 if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
2978 ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
2980 ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
2982 #http://backreference.org/2013/03/01/ipv6-address-normalization/
2984 $cidr = lc(Net::IP::ip_compress_address($cidr, 6));
2990 $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
2995 foreach my $ipversion (4, 6) {
2996 my $data = $nethash->{$ipversion};
2998 my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
3000 my $hashsize = scalar(@$options);
3001 if ($hashsize <= 64) {
3004 $hashsize = round_powerof2($hashsize);
3007 my $family = $ipversion == "6" ? "inet6" : "inet";
3009 $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
3011 foreach my $cidr (sort keys %$data) {
3012 my $entry = $data->{$cidr};
3014 my $cmd = "add $name $cidr";
3015 if ($entry->{nomatch}) {
3016 if ($feature_ipset_nomatch) {
3017 push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
3019 warn "ignore !$cidr - nomatch not supported by kernel\n";
3022 push @{$ipset_ruleset->{$name}}, $cmd;
3029 sub round_powerof2 {
3033 $int |= $int >> $_ foreach (1,2,4,8,16);
3037 sub load_clusterfw_conf {
3038 my ($filename, $verbose) = @_;
3040 $filename = $clusterfw_conf_filename if !defined($filename);
3042 my $cluster_conf = {};
3043 if (my $fh = IO::File->new($filename, O_RDONLY)) {
3044 $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
3047 return $cluster_conf;
3050 sub save_clusterfw_conf {
3051 my ($cluster_conf) = @_;
3055 my $options = $cluster_conf->{options};
3056 $raw .= &$format_options($options) if $options && scalar(keys %$options);
3058 my $aliases = $cluster_conf->{aliases};
3059 $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
3061 $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
3063 my $rules = $cluster_conf->{rules};
3064 if ($rules && scalar(@$rules)) {
3065 $raw .= "[RULES]\n\n";
3066 $raw .= &$format_rules($rules, 1);
3070 if ($cluster_conf->{groups}) {
3071 foreach my $group (sort keys %{$cluster_conf->{groups}}) {
3072 my $rules = $cluster_conf->{groups}->{$group};
3073 if (my $comment = $cluster_conf->{group_comments}->{$group}) {
3074 my $utf8comment = encode('utf8
', $comment);
3075 $raw .= "[group $group] # $utf8comment\n\n";
3077 $raw .= "[group $group]\n\n";
3080 $raw .= &$format_rules($rules, 0);
3086 mkdir $pvefw_conf_dir;
3087 PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw);
3089 unlink $clusterfw_conf_filename;
3093 sub load_hostfw_conf {
3094 my ($cluster_conf, $filename, $verbose) = @_;
3096 $filename = $hostfw_conf_filename if !defined($filename);
3098 my $hostfw_conf = {};
3099 if (my $fh = IO::File->new($filename, O_RDONLY)) {
3100 $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
3102 return $hostfw_conf;
3105 sub save_hostfw_conf {
3106 my ($hostfw_conf) = @_;
3110 my $options = $hostfw_conf->{options};
3111 $raw .= &$format_options($options) if $options && scalar(keys %$options);
3113 my $rules = $hostfw_conf->{rules};
3114 if ($rules && scalar(@$rules)) {
3115 $raw .= "[RULES]\n\n";
3116 $raw .= &$format_rules($rules, 1);
3121 PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
3123 unlink $hostfw_conf_filename;
3128 my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
3132 if ($vmdata) { # test mode
3133 my $testdir = $vmdata->{testdir} || die "no test directory specified";
3134 my $filename = "$testdir/cluster.fw";
3135 $cluster_conf = load_clusterfw_conf($filename, $verbose);
3137 $filename = "$testdir/host.fw";
3138 $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
3140 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
3141 } else { # normal operation
3142 $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
3144 $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
3146 $vmdata = read_local_vm_config();
3147 $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
3150 my ($ruleset, $ipset_ruleset) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
3151 my ($rulesetv6) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose);
3153 return ($ruleset, $ipset_ruleset, $rulesetv6);
3156 sub compile_iptables_filter {
3157 my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
3160 if ($cluster_conf->{aliases}->{local_network}) {
3161 $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
3164 ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
3166 $cluster_conf->{aliases}->{local_network} = {
3167 name => 'local_network
', cidr => $localnet, ipversion => $localnet_ver };
3170 push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
3172 return ({}, {}) if !$cluster_conf->{options}->{enable};
3176 ruleset_create_chain($ruleset, "PVEFW-INPUT");
3177 ruleset_create_chain($ruleset, "PVEFW-OUTPUT");
3179 ruleset_create_chain($ruleset, "PVEFW-FORWARD");
3181 my $hostfw_options = $hostfw_conf->{options} || {};
3183 # fixme: what log level should we use here?
3184 my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
3186 ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
3188 ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
3189 ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
3191 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
3193 ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
3194 ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
3196 generate_std_chains($ruleset, $hostfw_options, $ipversion);
3198 my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
3200 my $ipset_ruleset = {};
3202 if ($hostfw_enable) {
3203 eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
3204 warn $@ if $@; # just to be sure - should not happen
3207 # generate firewall rules for QEMU VMs
3208 foreach my $vmid (keys %{$vmdata->{qemu}}) {
3210 my $conf = $vmdata->{qemu}->{$vmid};
3211 my $vmfw_conf = $vmfw_configs->{$vmid};
3212 return if !$vmfw_conf;
3214 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
3216 foreach my $netid (keys %$conf) {
3217 next if $netid !~ m/^net(\d+)$/;
3218 my $net = PVE::QemuServer::parse_net($conf->{$netid});
3219 next if !$net->{firewall};
3220 my $iface = "tap${vmid}i$1";
3222 my $macaddr = $net->{macaddr};
3223 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3224 $vmfw_conf, $vmid, 'IN
', $ipversion);
3225 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3226 $vmfw_conf, $vmid, 'OUT
', $ipversion);
3229 warn $@ if $@; # just to be sure - should not happen
3232 # generate firewall rules for LXC containers
3233 foreach my $vmid (keys %{$vmdata->{lxc}}) {
3235 my $conf = $vmdata->{lxc}->{$vmid};
3236 my $vmfw_conf = $vmfw_configs->{$vmid};
3237 return if !$vmfw_conf;
3239 generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
3241 if ($vmfw_conf->{options}->{enable}) {
3242 foreach my $netid (keys %$conf) {
3243 next if $netid !~ m/^net(\d+)$/;
3244 my $net = PVE::LXC::parse_lxc_network($conf->{$netid});
3245 next if !$net->{firewall};
3246 my $iface = "veth${vmid}i$1";
3247 my $macaddr = $net->{hwaddr};
3248 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3249 $vmfw_conf, $vmid, 'IN
', $ipversion);
3250 generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
3251 $vmfw_conf, $vmid, 'OUT
', $ipversion);
3255 warn $@ if $@; # just to be sure - should not happen
3258 if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
3259 ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS");
3262 generate_ipset_chains($ipset_ruleset, undef, $cluster_conf);
3264 return ($ruleset, $ipset_ruleset);
3267 sub get_ruleset_status {
3268 my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
3270 my $statushash = {};
3272 foreach my $chain (sort keys %$ruleset) {
3273 my $sig = &$digest_fn($ruleset->{$chain});
3275 $statushash->{$chain}->{sig} = $sig;
3277 my $oldsig = $active_chains->{$chain};
3278 if (!defined($oldsig)) {
3279 $statushash->{$chain}->{action} = 'create
';
3281 if ($oldsig eq $sig) {
3282 $statushash->{$chain}->{action} = 'exists';
3284 $statushash->{$chain}->{action} = 'update
';
3287 print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
3288 foreach my $cmd (@{$ruleset->{$chain}}) {
3289 print "\t$cmd\n" if $verbose;
3293 foreach my $chain (sort keys %$active_chains) {
3294 if (!defined($ruleset->{$chain})) {
3295 my $sig = $active_chains->{$chain};
3296 $statushash->{$chain}->{action} = 'delete';
3297 $statushash->{$chain}->{sig} = $sig;
3298 print "delete $chain ($sig)\n" if $verbose;
3305 sub print_sig_rule {
3306 my ($chain, $sig) = @_;
3308 # We just use this to store a SHA1 checksum used to detect changes
3309 return "-A $chain -m comment --comment \"PVESIG:$sig\"\n";
3312 sub get_ruleset_cmdlist {
3313 my ($ruleset, $verbose, $iptablescmd) = @_;
3315 my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
3317 my ($active_chains, $hooks) = iptables_get_chains($iptablescmd);
3318 my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
3320 # create missing chains first
3321 foreach my $chain (sort keys %$ruleset) {
3322 my $stat = $statushash->{$chain};
3323 die "internal error" if !$stat;
3324 next if $stat->{action} ne 'create
';
3326 $cmdlist .= ":$chain - [0:0]\n";
3329 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3330 my $chain = "PVEFW-$h";
3331 if ($ruleset->{$chain} && !$hooks->{$h}) {
3332 $cmdlist .= "-A $h -j $chain\n";
3336 foreach my $chain (sort keys %$ruleset) {
3337 my $stat = $statushash->{$chain};
3338 die "internal error" if !$stat;
3340 if ($stat->{action
} eq 'update' || $stat->{action
} eq 'create') {
3341 $cmdlist .= "-F $chain\n";
3342 foreach my $cmd (@{$ruleset->{$chain}}) {
3343 $cmdlist .= "$cmd\n";
3345 $cmdlist .= print_sig_rule
($chain, $stat->{sig
});
3346 } elsif ($stat->{action
} eq 'delete') {
3347 die "internal error"; # this should not happen
3348 } elsif ($stat->{action
} eq 'exists') {
3351 die "internal error - unknown status '$stat->{action}'";
3355 foreach my $chain (keys %$statushash) {
3356 next if $statushash->{$chain}->{action
} ne 'delete';
3357 $cmdlist .= "-F $chain\n";
3359 foreach my $chain (keys %$statushash) {
3360 next if $statushash->{$chain}->{action
} ne 'delete';
3361 next if $chain eq 'PVEFW-INPUT';
3362 next if $chain eq 'PVEFW-OUTPUT';
3363 next if $chain eq 'PVEFW-FORWARD';
3364 $cmdlist .= "-X $chain\n";
3367 my $changes = $cmdlist ne "*filter\n" ?
1 : 0;
3369 $cmdlist .= "COMMIT\n";
3371 return wantarray ?
($cmdlist, $changes) : $cmdlist;
3374 sub get_ipset_cmdlist
{
3375 my ($ruleset, $verbose) = @_;
3379 my $delete_cmdlist = "";
3381 my $active_chains = ipset_get_chains
();
3382 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&ipset_chain_digest
, $verbose);
3384 # remove stale _swap chains
3385 foreach my $chain (keys %$active_chains) {
3386 if ($chain =~ m/^PVEFW-\S+_swap$/) {
3387 $cmdlist .= "destroy $chain\n";
3391 foreach my $chain (keys %$ruleset) {
3392 my $stat = $statushash->{$chain};
3393 die "internal error" if !$stat;
3395 if ($stat->{action
} eq 'create') {
3396 foreach my $cmd (@{$ruleset->{$chain}}) {
3397 $cmdlist .= "$cmd\n";
3402 foreach my $chain (keys %$ruleset) {
3403 my $stat = $statushash->{$chain};
3404 die "internal error" if !$stat;
3406 if ($stat->{action
} eq 'update') {
3407 my $chain_swap = $chain."_swap";
3409 foreach my $cmd (@{$ruleset->{$chain}}) {
3410 $cmd =~ s/$chain/$chain_swap/;
3411 $cmdlist .= "$cmd\n";
3413 $cmdlist .= "swap $chain_swap $chain\n";
3414 $cmdlist .= "flush $chain_swap\n";
3415 $cmdlist .= "destroy $chain_swap\n";
3419 # the remove unused chains
3420 foreach my $chain (keys %$statushash) {
3421 next if $statushash->{$chain}->{action
} ne 'delete';
3423 $delete_cmdlist .= "flush $chain\n";
3424 $delete_cmdlist .= "destroy $chain\n";
3427 my $changes = ($cmdlist || $delete_cmdlist) ?
1 : 0;
3429 return ($cmdlist, $delete_cmdlist, $changes);
3433 my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $verbose) = @_;
3435 enable_bridge_firewall
();
3437 my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
3438 get_ipset_cmdlist
($ipset_ruleset, undef, $verbose);
3440 my ($cmdlist, $changes) = get_ruleset_cmdlist
($ruleset, $verbose);
3441 my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist
($rulesetv6, $verbose, "ip6tables");
3444 if ($ipset_changes) {
3445 print "ipset changes:\n";
3446 print $ipset_create_cmdlist if $ipset_create_cmdlist;
3447 print $ipset_delete_cmdlist if $ipset_delete_cmdlist;
3451 print "iptables changes:\n";
3456 print "ip6tables changes:\n";
3461 my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
3462 PVE
::Tools
::file_set_contents
($tmpfile, $ipset_create_cmdlist || '');
3464 ipset_restore_cmdlist
($ipset_create_cmdlist);
3466 $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
3467 PVE
::Tools
::file_set_contents
($tmpfile, $cmdlist || '');
3469 iptables_restore_cmdlist
($cmdlist);
3471 $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
3472 PVE
::Tools
::file_set_contents
($tmpfile, $cmdlistv6 || '');
3474 ip6tables_restore_cmdlist
($cmdlistv6);
3476 $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
3477 PVE
::Tools
::file_set_contents
($tmpfile, $ipset_delete_cmdlist || '');
3479 ipset_restore_cmdlist
($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
3481 # test: re-read status and check if everything is up to date
3482 my $active_chains = iptables_get_chains
();
3483 my $statushash = get_ruleset_status
($ruleset, $active_chains, \
&iptables_chain_digest
, 0);
3486 foreach my $chain (sort keys %$ruleset) {
3487 my $stat = $statushash->{$chain};
3488 if ($stat->{action
} ne 'exists') {
3489 warn "unable to update chain '$chain'\n";
3494 my $active_chainsv6 = iptables_get_chains
("ip6tables");
3495 my $statushashv6 = get_ruleset_status
($rulesetv6, $active_chainsv6, \
&iptables_chain_digest
, 0);
3497 foreach my $chain (sort keys %$rulesetv6) {
3498 my $stat = $statushashv6->{$chain};
3499 if ($stat->{action
} ne 'exists') {
3500 warn "unable to update chain '$chain'\n";
3505 die "unable to apply firewall changes\n" if $errors;
3507 update_nf_conntrack_max
($hostfw_conf);
3509 update_nf_conntrack_tcp_timeout_established
($hostfw_conf);
3513 sub update_nf_conntrack_max
{
3514 my ($hostfw_conf) = @_;
3516 my $max = 65536; # reasonable default
3518 my $options = $hostfw_conf->{options
} || {};
3520 if (defined($options->{nf_conntrack_max
}) && ($options->{nf_conntrack_max
} > $max)) {
3521 $max = $options->{nf_conntrack_max
};
3522 $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192
3525 my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max";
3526 my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize";
3528 my $current = int(PVE
::Tools
::file_read_firstline
($filename_nf_conntrack_max) || $max);
3530 if ($current != $max) {
3531 my $hashsize = int($max/4);
3532 PVE
::ProcFSTools
::write_proc_entry
($filename_hashsize, $hashsize);
3533 PVE
::ProcFSTools
::write_proc_entry
($filename_nf_conntrack_max, $max);
3537 sub update_nf_conntrack_tcp_timeout_established
{
3538 my ($hostfw_conf) = @_;
3540 my $options = $hostfw_conf->{options
} || {};
3542 my $value = defined($options->{nf_conntrack_tcp_timeout_established
}) ?
$options->{nf_conntrack_tcp_timeout_established
} : 432000;
3544 PVE
::ProcFSTools
::write_proc_entry
("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
3547 sub remove_pvefw_chains
{
3549 PVE
::Firewall
::remove_pvefw_chains_iptables
("iptables");
3550 PVE
::Firewall
::remove_pvefw_chains_iptables
("ip6tables");
3551 PVE
::Firewall
::remove_pvefw_chains_ipset
();
3555 sub remove_pvefw_chains_iptables
{
3556 my ($iptablescmd) = @_;
3558 my ($chash, $hooks) = iptables_get_chains
($iptablescmd);
3559 my $cmdlist = "*filter\n";
3561 foreach my $h (qw(INPUT OUTPUT FORWARD)) {
3563 $cmdlist .= "-D $h -j PVEFW-$h\n";
3567 foreach my $chain (keys %$chash) {
3568 $cmdlist .= "-F $chain\n";
3571 foreach my $chain (keys %$chash) {
3572 $cmdlist .= "-X $chain\n";
3574 $cmdlist .= "COMMIT\n";
3576 if($iptablescmd eq "ip6tables") {
3577 ip6tables_restore_cmdlist
($cmdlist);
3579 iptables_restore_cmdlist
($cmdlist);
3583 sub remove_pvefw_chains_ipset
{
3585 my $ipset_chains = ipset_get_chains
();
3589 foreach my $chain (keys %$ipset_chains) {
3590 $cmdlist .= "flush $chain\n";
3591 $cmdlist .= "destroy $chain\n";
3594 ipset_restore_cmdlist
($cmdlist) if $cmdlist;
3598 my $cluster_conf = load_clusterfw_conf
();
3599 my $cluster_options = $cluster_conf->{options
};
3600 my $enable = $cluster_options->{enable
};
3604 # load required modules here
3610 my $cluster_conf = load_clusterfw_conf
();
3611 my $cluster_options = $cluster_conf->{options
};
3613 if (!$cluster_options->{enable
}) {
3614 PVE
::Firewall
::remove_pvefw_chains
();
3618 my $hostfw_conf = load_hostfw_conf
($cluster_conf);
3620 my ($ruleset, $ipset_ruleset, $rulesetv6) = compile
($cluster_conf, $hostfw_conf);
3622 apply_ruleset
($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6);