use warnings;
use strict;
-use POSIX;
-use Data::Dumper;
+
use Digest::SHA;
-use Socket qw(AF_INET6 inet_ntop inet_pton);
-use PVE::INotify;
-use PVE::Exception qw(raise raise_param_exc);
-use PVE::JSONSchema qw(register_standard_option get_standard_option);
-use PVE::Cluster;
-use PVE::ProcFSTools;
-use PVE::Tools qw($IPV4RE $IPV6RE);
-use PVE::Network;
-use PVE::SafeSyslog;
+use Encode;
use File::Basename;
use File::Path;
use IO::File;
use Net::IP;
-use PVE::Tools qw(run_command lock_file dir_glob_foreach);
-use Encode;
+use POSIX;
+use Socket qw(AF_INET AF_INET6 inet_ntop inet_pton);
use Storable qw(dclone);
-my $hostfw_conf_filename = "/etc/pve/local/host.fw";
+use PVE::Cluster;
+use PVE::Corosync;
+use PVE::Exception qw(raise raise_param_exc);
+use PVE::INotify;
+use PVE::JSONSchema qw(register_standard_option get_standard_option);
+use PVE::Network;
+use PVE::ProcFSTools;
+use PVE::SafeSyslog;
+use PVE::Tools qw($IPV4RE $IPV6RE);
+use PVE::Tools qw(run_command lock_file dir_glob_foreach);
+
+use PVE::Firewall::Helpers;
+
my $pvefw_conf_dir = "/etc/pve/firewall";
my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw";
$have_lxc = 1;
};
-
my $pve_fw_status_dir = "/var/lib/pve-firewall";
mkdir $pve_fw_status_dir; # make sure this exists
sub pve_verify_ip_or_cidr {
my ($cidr, $noerr) = @_;
- if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) {
- return $cidr if Net::IP->new($cidr);
+ if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(?:/\d+)?$!) {
+ # Net::IP throws an error if the masked CIDR part isn't zero, e.g., `192.168.1.155/24`
+ # fails but `192.168.1.0/24` succeeds. clean_cidr removes the non zero bits from the CIDR.
+ my $clean_cidr = clean_cidr($cidr);
+ return $cidr if Net::IP->new($clean_cidr);
return undef if $noerr;
+
die Net::IP::Error() . "\n";
}
return undef if $noerr;
sub pve_verify_ip_or_cidr_or_alias {
my ($cidr, $noerr) = @_;
- return if $cidr =~ m/^(?:$ip_alias_pattern)$/;
+ return if $cidr =~ m@^(dc/|guest/)?(?:$ip_alias_pattern)$@;
return pve_verify_ip_or_cidr($cidr, $noerr);
}
+sub clean_cidr {
+ my ($cidr) = @_;
+ my ($ip, $len) = split('/', $cidr);
+ return $cidr if !$len;
+ my $ver = ($ip =~ m!^$IPV4RE$!) ? 4 : 6;
+
+ my $bin_ip = Net::IP::ip_iptobin( Net::IP::ip_expand_address($ip, $ver), $ver);
+ my $bin_mask = Net::IP::ip_get_mask($len, $ver);
+ my $clean_ip = Net::IP::ip_compress_address( Net::IP::ip_bintoip($bin_ip & $bin_mask, $ver), $ver);
+
+ return "${clean_ip}/$len";
+}
+
PVE::JSONSchema::register_standard_option('ipset-name', {
description => "IP set name.",
type => 'string',
};
my $nodename = PVE::INotify::nodename();
+my $hostfw_conf_filename = "/etc/pve/nodes/$nodename/host.fw";
my $pve_fw_lock_filename = "/var/lock/pvefw.lck";
my $default_log_level = 'nolog'; # avoid logs by default
+my $global_log_ratelimit = '--limit 1/sec';
my $log_level_hash = {
debug => 7,
emerg => 0,
};
+my $verbose = 0;
+sub set_verbose {
+ $verbose = shift;
+}
+
# %rule
#
# name => optional
{ action => 'PARAM', proto => 'udp', dport => '6881' },
],
'Ceph' => [
- "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)",
+ "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Daemons)",
+ # Legacy port for protocol v1
{ action => 'PARAM', proto => 'tcp', dport => '6789' },
+ # New port for protocol v2
+ { action => 'PARAM', proto => 'tcp', dport => '3300' },
{ action => 'PARAM', proto => 'tcp', dport => '6800:7300' },
],
'CVS' => [
{ action => 'PARAM', proto => 'tcp', dport => '9418' },
],
'HKP' => [
- "OpenPGP HTTP keyserver protocol traffic",
+ "OpenPGP HTTP key server protocol traffic",
{ action => 'PARAM', proto => 'tcp', dport => '11371' },
],
'HTTP' => [
{ action => 'PARAM', proto => 'udp', dport => '5632' },
{ action => 'PARAM', proto => 'tcp', dport => '5631' },
],
+ 'PMG' => [
+ "Proxmox Mail Gateway web interface",
+ { action => 'PARAM', proto => 'tcp', dport => '8006' },
+ ],
'POP3' => [
"POP3 traffic",
{ action => 'PARAM', proto => 'tcp', dport => '110' },
],
'Razor' => [
"Razor Antispam System",
- { action => 'ACCEPT', proto => 'tcp', dport => '2703' },
+ { action => 'PARAM', proto => 'tcp', dport => '2703' },
],
'Rdate' => [
"Remote time retrieval (rdate)",
{ action => 'PARAM', proto => '41' },
{ action => 'PARAM', proto => 'udp', dport => '5072,8374' },
],
+ 'SPICEproxy' => [
+ "Proxmox VE SPICE display proxy traffic",
+ { action => 'PARAM', proto => 'tcp', dport => '3128' },
+ ],
'Squid' => [
"Squid web proxy traffic",
{ action => 'PARAM', proto => 'tcp', dport => '3128' },
],
};
+my $pve_fw_helpers = {
+ 'amanda' => { proto => 'udp', dport => '10080', 'v4' => 1, 'v6' => 1 },
+ 'ftp' => { proto => 'tcp', dport => '21', 'v4' => 1, 'v6' => 1},
+ 'irc' => { proto => 'tcp', dport => '6667', 'v4' => 1 },
+ 'netbios-ns' => { proto => 'udp', dport => '137', 'v4' => 1 },
+ 'pptp' => { proto => 'tcp', dport => '1723', 'v4' => 1, },
+ 'sane' => { proto => 'tcp', dport => '6566', 'v4' => 1, 'v6' => 1 },
+ 'sip' => { proto => 'udp', dport => '5060', 'v4' => 1, 'v6' => 1 },
+ 'snmp' => { proto => 'udp', dport => '161', 'v4' => 1 },
+ 'tftp' => { proto => 'udp', dport => '69', 'v4' => 1, 'v6' => 1},
+};
+
my $pve_fw_parsed_macros;
my $pve_fw_macro_descr;
my $pve_fw_macro_ipversion = {};
# same as shorewall 'Drop', which is equal to DROP,
# but REJECT/DROP some packages to reduce logging,
# and ACCEPT critical ICMP types
- { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
# we are not interested in BROADCAST/MULTICAST/ANYCAST
{ action => 'PVEFW-DropBroadcast' },
# ACCEPT critical ICMP types
# same as shorewall 'Reject', which is equal to Reject,
# but REJECT/DROP some packages to reduce logging,
# and ACCEPT critical ICMP types
- { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
# we are not interested in BROADCAST/MULTICAST/ANYCAST
{ action => 'PVEFW-DropBroadcast' },
# ACCEPT critical ICMP types
],
'PVEFW-tcpflags' => [
# same as shorewall tcpflags action.
- # Packets arriving on this interface are checked for som illegal combinations of TCP flags
+ # Packets arriving on this interface are checked for some illegal combinations of TCP flags
{ match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
{ match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
{ match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
#{ action => 'DROP', dest => '224.0.0.0/4' },
],
'PVEFW-reject' => [
- # same as shorewall 'reject'
- #{ action => 'DROP', dsttype => 'BROADCAST' },
- #{ action => 'DROP', source => '224.0.0.0/4' },
{ action => 'DROP', proto => 'icmpv6' },
{ match => '-p tcp', target => '-j REJECT --reject-with tcp-reset' },
- #"-p udp -j REJECT --reject-with icmp-port-unreachable",
- #"-p icmp -j REJECT --reject-with icmp-host-unreachable",
- #"-j REJECT --reject-with icmp-host-prohibited",
+ { match => '-p udp', target => '-j REJECT --reject-with icmp6-port-unreachable' },
+ { target => '-j REJECT --reject-with icmp6-adm-prohibited' },
],
'PVEFW-Drop' => [
# same as shorewall 'Drop', which is equal to DROP,
],
'PVEFW-tcpflags' => [
# same as shorewall tcpflags action.
- # Packets arriving on this interface are checked for som illegal combinations of TCP flags
+ # Packets arriving on this interface are checked for some illegal combinations of TCP flags
{ match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG', target => '-g PVEFW-logflags' },
{ match => '-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE', target => '-g PVEFW-logflags' },
{ match => '-p tcp -m tcp --tcp-flags SYN,RST SYN,RST', target => '-g PVEFW-logflags' },
# ip6tables -p icmpv6 -h
my $icmpv6_type_names = {
- 'any' => 1,
'destination-unreachable' => 1,
'no-route' => 1,
'communication-prohibited' => 1,
+ 'beyond-scope' => 1,
'address-unreachable' => 1,
'port-unreachable' => 1,
+ 'failed-policy' => 1,
+ 'reject-route' => 1,
'packet-too-big' => 1,
'time-exceeded' => 1,
'ttl-zero-during-transit' => 1,
'redirect' => 1,
};
+my $is_valid_icmp_type = sub {
+ my ($type, $valid_types) = @_;
+
+ if ($type =~ m/^\d+$/) {
+ # values for icmp-type range between 0 and 255 (8 bit field)
+ die "invalid icmp-type '$type'\n" if $type > 255;
+ } else {
+ die "unknown icmp-type '$type'\n" if !defined($valid_types->{$type});
+ }
+};
+
+my $proto_is_icmp = sub {
+ my $proto = shift;
+ return $proto eq 'icmp' || $proto eq 'icmpv6' || $proto eq 'ipv6-icmp';
+};
+
sub init_firewall_macros {
$pve_fw_parsed_macros = {};
}
# ipset names are limited to 31 characters,
-# and we use '-v4' or '-v6' to indicate IP versions,
-# and we use '_swap' suffix for atomic update,
+# and we use '-v4' or '-v6' to indicate IP versions,
+# and we use '_swap' suffix for atomic update,
# for example PVEFW-${VMID}-${ipset_name}_swap
my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
return;
}
- if ($str =~ m/^${ip_alias_pattern}$/) {
+ if ($str =~ m@^(dc/|guest/)?${ip_alias_pattern}$@) {
die "alias name too long\n" if length($str) > $max_alias_name_length;
return;
}
return $ipversion;
}
+# $dport must only be set to 1 if the parsed parameter is dport and the
+# protocol is one of the ICMP variants - ICMP type values used to be stored in
+# the dport parameter.
sub parse_port_name_number_or_range {
my ($str, $dport) = @_;
my @elements = split(/,/, $str);
die "extraneous commas in list\n" if $str ne join(',', @elements);
foreach my $item (@elements) {
- if ($item =~ m/^(\d+):(\d+)$/) {
+ if ($item =~ m/^([0-9]+):([0-9]+)$/) {
$count += 2;
my ($port1, $port2) = ($1, $2);
die "invalid port '$port1'\n" if $port1 > 65535;
die "invalid port '$port2'\n" if $port2 > 65535;
- } elsif ($item =~ m/^(\d+)$/) {
+ die "backwards range '$port1:$port2' not allowed, did you mean '$port2:$port1'?\n" if $port1 > $port2;
+ } elsif ($item =~ m/^([0-9]+)$/) {
$count += 1;
my $port = $1;
die "invalid port '$port'\n" if $port > 65535;
}
}
- die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 0;
+ die "ICMP ports not allowed in port range\n" if $icmp_port && $count > 0;
# I really don't like to use the word number here, but it's the only thing
# that makes sense in a literal way. The range 1:100 counts as 2, not as
return (scalar(@elements) > 1);
}
+PVE::JSONSchema::register_format('pve-fw-conntrack-helper', \&pve_fw_verify_conntrack_helper);
+sub pve_fw_verify_conntrack_helper {
+ my ($list) = @_;
+
+ my @helpers = split(/,/, $list);
+ die "extraneous commas in list\n" if $list ne join(',', @helpers);
+ foreach my $helper (@helpers) {
+ die "unknown helper $helper" if !$pve_fw_helpers->{$helper};
+ }
+
+ return $list;
+}
+
PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec);
sub pve_fw_verify_sport_spec {
my ($portstr) = @_;
return $proto;
}
+PVE::JSONSchema::register_format('pve-fw-icmp-type-spec', \&pve_fw_verify_icmp_type_spec);
+sub pve_fw_verify_icmp_type_spec {
+ my ($icmp_type) = @_;
+
+ if ($icmp_type_names->{$icmp_type} || $icmpv6_type_names->{$icmp_type}) {
+ return $icmp_type;
+ }
+
+ die "invalid icmp-type value '$icmp_type'\n" if $icmp_type ne '';
+
+ return $icmp_type;
+}
+
# helper function for API
minimum => 0,
optional => 1,
},
+ ebtables => {
+ description => "Enable ebtables rules cluster wide.",
+ type => 'boolean',
+ default => 1,
+ optional => 1,
+ },
policy_in => {
description => "Input policy.",
type => 'string',
optional => 1,
enum => ['ACCEPT', 'REJECT', 'DROP'],
},
+ log_ratelimit => {
+ description => "Log ratelimiting settings",
+ type => 'string', format => {
+ enable => {
+ default_key => 1,
+ description => 'Enable or disable log rate limiting',
+ type => 'boolean',
+ default => '1',
+ },
+ rate => {
+ type => 'string',
+ description => 'Frequency with which the burst bucket gets refilled',
+ optional => 1,
+ pattern => '[1-9][0-9]*\/(second|minute|hour|day)',
+ format_description => 'rate',
+ default => '1/second',
+ },
+ burst => {
+ type => 'integer',
+ minimum => 0,
+ optional => 1,
+ description => 'Initial burst of packages which will always get logged before the rate is applied',
+ default => 5,
+ },
+ },
+ optional => 1,
+ },
};
our $host_option_properties = {
tcpflags => {
description => "Filter illegal combinations of TCP flags.",
type => 'boolean',
+ default => 0,
optional => 1,
},
nf_conntrack_max => {
description => "Maximum number of tracked connections.",
type => 'integer',
optional => 1,
+ default => 262144,
minimum => 32768,
},
nf_conntrack_tcp_timeout_established => {
description => "Conntrack established timeout.",
type => 'integer',
optional => 1,
+ default => 432000,
minimum => 7875,
},
+ nf_conntrack_tcp_timeout_syn_recv => {
+ description => "Conntrack syn recv timeout.",
+ type => 'integer',
+ optional => 1,
+ default => 60,
+ minimum => 30,
+ maximum => 60,
+ },
ndp => {
- description => "Enable NDP.",
+ description => "Enable NDP (Neighbor Discovery Protocol).",
+ type => 'boolean',
+ default => 0,
+ optional => 1,
+ },
+ nf_conntrack_allow_invalid => {
+ description => "Allow invalid packets on connection tracking.",
+ type => 'boolean',
+ default => 0,
+ optional => 1,
+ },
+ nf_conntrack_helpers => {
+ type => 'string', format => 'pve-fw-conntrack-helper',
+ description => "Enable conntrack helpers for specific protocols. ".
+ "Supported protocols: amanda, ftp, irc, netbios-ns, pptp, sane, sip, snmp, tftp",
+ default => '',
+ optional => 1,
+ },
+ protection_synflood => {
+ description => "Enable synflood protection",
type => 'boolean',
+ default => 0,
optional => 1,
},
+ protection_synflood_rate => {
+ description => "Synflood protection rate syn/sec by ip src.",
+ type => 'integer',
+ optional => 1,
+ default => 200,
+ },
+ protection_synflood_burst => {
+ description => "Synflood protection rate burst by ip src.",
+ type => 'integer',
+ optional => 1,
+ default => 1000,
+ },
+ log_nf_conntrack => {
+ description => "Enable logging of conntrack information.",
+ type => 'boolean',
+ default => 0,
+ optional => 1
+ },
};
our $vm_option_properties = {
enable => {
description => "Enable/disable firewall rules.",
type => 'boolean',
+ default => 0,
optional => 1,
},
macfilter => {
description => "Enable/disable MAC address filter.",
type => 'boolean',
+ default => 1,
optional => 1,
},
dhcp => {
description => "Enable DHCP.",
type => 'boolean',
+ default => 0,
optional => 1,
},
ndp => {
- description => "Enable NDP.",
+ description => "Enable NDP (Neighbor Discovery Protocol).",
type => 'boolean',
+ default => 0,
optional => 1,
},
radv => {
description => "Restrict packet source address. $addr_list_descr",
type => 'string', format => 'pve-fw-addr-spec',
optional => 1,
+ maxLength => 512,
},
dest => {
description => "Restrict packet destination address. $addr_list_descr",
type => 'string', format => 'pve-fw-addr-spec',
optional => 1,
+ maxLength => 512,
},
proto => {
description => "IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.",
minimum => 0,
optional => 1,
},
+ log => get_standard_option('pve-fw-loglevel', {
+ description => "Log level for firewall rule.",
+ }),
sport => {
description => "Restrict TCP/UDP source port. $port_descr",
type => 'string', format => 'pve-fw-sport-spec',
type => 'string',
optional => 1,
},
+ 'icmp-type' => {
+ description => "Specify icmp-type. Only valid if proto equals 'icmp' or 'icmpv6'/'ipv6-icmp'.",
+ type => 'string', format => 'pve-fw-icmp-type-spec',
+ optional => 1,
+ },
};
sub add_rule_properties {
my $set_ip_version = sub {
my $vers = shift;
if ($vers) {
- die "detected mixed ipv4/ipv6 adresses in rule\n"
+ die "detected mixed ipv4/ipv6 addresses in rule\n"
if $ipversion && ($vers != $ipversion);
$ipversion = $vers;
}
if (my $value = $rule->{$name}) {
if ($value =~ m/^\+/) {
- if ($value =~ m/^\+(${ipset_name_pattern})$/) {
- &$add_error($name, "no such ipset '$1'")
- if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1}));
+ if ($value =~ m@^\+(guest/|dc/)?(${ipset_name_pattern})$@) {
+ &$add_error($name, "no such ipset '$2'")
+ if !($cluster_conf->{ipset}->{$2} || ($fw_conf && $fw_conf->{ipset}->{$2}));
} else {
&$add_error($name, "invalid ipset name '$value'");
}
- } elsif ($value =~ m/^${ip_alias_pattern}$/){
- my $alias = lc($value);
+ } elsif ($value =~ m@^(guest/|dc/)?(${ip_alias_pattern})$@){
+ my $scope = $1 // "";
+ my $alias = lc($2);
&$add_error($name, "no such alias '$value'")
if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
- my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
- $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
+
+ my $e;
+ if ($scope ne 'dc/' && $fw_conf) {
+ $e = $fw_conf->{aliases}->{$alias};
+ }
+ if ($scope ne 'guest/' && !$e && $cluster_conf) {
+ $e = $cluster_conf->{aliases}->{$alias};
+ }
&$set_ip_version($e->{ipversion});
}
}
}
+ my $is_icmp = 0;
if ($rule->{proto}) {
eval { pve_fw_verify_protocol_spec($rule->{proto}); };
&$add_error('proto', $@) if $@;
&$set_ip_version(4) if $rule->{proto} eq 'icmp';
- &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
+ &$set_ip_version(6) if $rule->{proto} eq 'icmpv6';
+ &$set_ip_version(6) if $rule->{proto} eq 'ipv6-icmp';
+ $is_icmp = $proto_is_icmp->($rule->{proto});
}
if ($rule->{dport}) {
- eval { parse_port_name_number_or_range($rule->{dport}, 1); };
+ eval { parse_port_name_number_or_range($rule->{dport}, $is_icmp); };
&$add_error('dport', $@) if $@;
my $proto = $rule->{proto};
&$add_error('proto', "missing property - 'dport' requires this property")
if !$proto;
&$add_error('dport', "protocol '$proto' does not support ports")
- if !$PROTOCOLS_WITH_PORTS->{$proto} &&
- $proto ne 'icmp' && $proto ne 'icmpv6'; # special cases
+ if !$PROTOCOLS_WITH_PORTS->{$proto} && !$is_icmp; #special cases
+ }
+
+ if (my $icmp_type = $rule ->{'icmp-type'}) {
+ my $proto = $rule->{proto};
+ &$add_error('proto', "missing property - 'icmp-type' requires this property")
+ if !$is_icmp;
+ &$add_error('icmp-type', "'icmp-type' cannot be specified together with 'dport'")
+ if $rule->{dport};
+ if ($proto eq 'icmp' && !$icmp_type_names->{$icmp_type}) {
+ &$add_error('icmp-type', "invalid icmp-type '$icmp_type' for proto 'icmp'");
+ } elsif (($proto eq 'icmpv6' || $proto eq 'ipv6-icmp') && !$icmpv6_type_names->{$icmp_type}) {
+ &$add_error('icmp-type', "invalid icmp-type '$icmp_type' for proto '$proto'");
+ }
}
if ($rule->{sport}) {
}
if ($rule->{source}) {
- eval {
+ eval {
my $source_ipversion = parse_address_list($rule->{source});
&$set_ip_version($source_ipversion);
};
}
if ($rule->{dest}) {
- eval {
- my $dest_ipversion = parse_address_list($rule->{dest});
+ eval {
+ my $dest_ipversion = parse_address_list($rule->{dest});
&$set_ip_version($dest_ipversion);
};
&$add_error('dest', $@) if $@;
}
# core functions
-my $bridge_firewall_enabled = 0;
sub enable_bridge_firewall {
- return if $bridge_firewall_enabled; # only once
PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1");
PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1");
# make sure syncookies are enabled (which is default on newer 3.X kernels anyways)
PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1");
- $bridge_firewall_enabled = 1;
}
sub iptables_restore_cmdlist {
- my ($cmdlist) = @_;
+ my ($cmdlist, $table) = @_;
- run_command("/sbin/iptables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
+ $table = 'filter' if !$table;
+ run_command(['iptables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
}
sub ip6tables_restore_cmdlist {
- my ($cmdlist) = @_;
+ my ($cmdlist, $table) = @_;
- run_command("/sbin/ip6tables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
+ $table = 'filter' if !$table;
+ run_command(['ip6tables-restore', '-T', $table, '-n'], input => $cmdlist, errmsg => "iptables_restore_cmdlist");
}
sub ipset_restore_cmdlist {
my ($cmdlist) = @_;
- run_command("/sbin/ipset restore", input => $cmdlist, errmsg => "ipset_restore_cmdlist");
+ run_command(['ipset', 'restore'], input => $cmdlist, errmsg => "ipset_restore_cmdlist");
}
sub ebtables_restore_cmdlist {
my ($cmdlist) = @_;
- run_command("/sbin/ebtables-restore", input => $cmdlist, errmsg => "ebtables_restore_cmdlist");
+ run_command(['ebtables-restore'], input => $cmdlist, errmsg => "ebtables_restore_cmdlist");
}
sub iptables_get_chains {
- my ($iptablescmd) = @_;
+ my ($iptablescmd, $t) = @_;
$iptablescmd = "iptables" if !$iptablescmd;
+ $t = 'filter' if !$t;
my $res = {};
return;
}
- return if $table ne 'filter';
+ return if $table ne $t;
if ($line =~ m/^:(\S+)\s/) {
my $chain = $1;
my ($chain, $sig) = ($1, $2);
return if !&$is_pvefw_chain($chain);
$res->{$chain} = $sig;
- } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) {
+ } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD|PREROUTING)\s+-j\s+PVEFW-\1$/) {
$hooks->{$1} = 1;
} else {
# simply ignore the rest
}
};
- run_command("/sbin/$iptablescmd-save", outfunc => $parser);
+ run_command(["$iptablescmd-save"], outfunc => $parser);
return wantarray ? ($res, $hooks) : $res;
}
return if $line =~ m/^\s*$/;
if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
my $chain = $1;
+ # ignore initval from ipset v7.7+, won't set that yet so it'd mess up change detection
+ $line =~ s/\binitval 0x[0-9a-f]+//;
$line =~ s/\s+$//; # delete trailing white space
push @{$chains->{$chain}}, $line;
} else {
}
};
- run_command("/sbin/ipset save", outfunc => $parser);
+ run_command(['ipset', 'save'], outfunc => $parser);
# compute digest for each chain
foreach my $chain (keys %$chains) {
my $res = {};
my $chains = {};
-
+ my $table;
my $parser = sub {
my $line = shift;
return if $line =~ m/^#/;
return if $line =~ m/^\s*$/;
- if ($line =~ m/^:(\S+)\s\S+$/) {
+ if ($line =~ m/^\*(\S+)$/) {
+ $table = $1;
+ return;
+ }
+
+ return if $table ne "filter";
+
+ if ($line =~ m/^:(\S+)\s(ACCEPT|DROP|RETURN)$/) {
# Make sure we know chains exist even if they're empty.
$chains->{$1} //= [];
- } elsif ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) {
- my $chain = $1;
- $line =~ s/\s+$//;
- push @{$chains->{$chain}}, $line;
- } elsif ($line =~ m/^(?:\S+)\s(tap\d+i\d+-(:?IN|OUT))\s(?:\S+).*/) {
- my $chain = $1;
- $line =~ s/\s+$//;
- push @{$chains->{$chain}}, $line;
- } elsif ($line =~ m/^(?:\S+)\s(veth\d+i\d+-(:?IN|OUT))\s(?:\S+).*/) {
+ $res->{$1}->{policy} = $2;
+ } elsif ($line =~ m/^(?:\S+)\s(\S+)\s(?:\S+).*/) {
my $chain = $1;
$line =~ s/\s+$//;
push @{$chains->{$chain}}, $line;
}
};
- run_command("/sbin/ebtables-save", outfunc => $parser);
-
- # compute digest for each chain
+ run_command(['ebtables-save'], outfunc => $parser);
+ # compute digest for each chain and store rules as well
foreach my $chain (keys %$chains) {
- $res->{$chain} = iptables_chain_digest($chains->{$chain});
+ $res->{$chain}->{rules} = $chains->{$chain};
+ $res->{$chain}->{sig} = iptables_chain_digest($chains->{$chain});
}
return $res;
}
-# substitude action of rule according to action hash
+# substitute action of rule according to action hash
sub rule_substitude_action {
my ($rule, $actions) = @_;
my $match;
if ($adr =~ m/^\+/) {
- if ($adr =~ m/^\+(${ipset_name_pattern})$/) {
- my $name = $1;
+ if ($adr =~ m@^\+(guest/|dc/)?(${ipset_name_pattern})$@) {
+ my $scope = $1 // "";
+ my $name = $2;
my $ipset_chain;
- if ($fw_conf && $fw_conf->{ipset}->{$name}) {
+ if ($scope ne 'dc/' && $fw_conf && $fw_conf->{ipset}->{$name}) {
$ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
- } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
+ } elsif ($scope ne 'guest/' && $cluster_conf && $cluster_conf->{ipset}->{$name}) {
$ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
} else {
die "no such ipset '$name'\n";
} else {
die "invalid security group name '$adr'\n";
}
- } elsif ($adr =~ m/^${ip_alias_pattern}$/){
- my $alias = lc($adr);
- my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
- $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
+ } elsif ($adr =~ m@^(dc/|guest/)?(${ip_alias_pattern})$@){
+ my $scope = $1 // "";
+ my $alias = lc($2);
+ my $e;
+ if ($scope ne 'dc/' && $fw_conf) {
+ $e = $fw_conf->{aliases}->{$alias};
+ }
+ if ($scope ne 'guest/' && !$e && $cluster_conf) {
+ $e = $cluster_conf->{aliases}->{$alias};
+ }
die "no such alias '$adr'\n" if !$e;
$match = "-${dir} $e->{cidr}";
} elsif ($adr =~ m/\-/){
if (my $proto = $rule->{proto}) {
push @match, "-p $proto";
+ my $is_icmp = $proto_is_icmp->($proto);
- my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, 1);
+ my $multidport = defined($rule->{dport}) && parse_port_name_number_or_range($rule->{dport}, $is_icmp);
my $multisport = defined($rule->{sport}) && parse_port_name_number_or_range($rule->{sport}, 0);
my $add_dport = sub {
- return if !$rule->{dport};
+ return if !defined($rule->{dport});
+ # NOTE: we re-use dport to store --icmp-type for icmp* protocol
if ($proto eq 'icmp') {
- # Note: we use dport to store --icmp-type
- die "unknown icmp-type '$rule->{dport}'\n"
- if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}});
+ $is_valid_icmp_type->($rule->{dport}, $icmp_type_names);
push @match, "-m icmp --icmp-type $rule->{dport}";
} elsif ($proto eq 'icmpv6') {
- # Note: we use dport to store --icmpv6-type
- die "unknown icmpv6-type '$rule->{dport}'\n"
- if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}});
+ $is_valid_icmp_type->($rule->{dport}, $icmpv6_type_names);
push @match, "-m icmpv6 --icmpv6-type $rule->{dport}";
} elsif (!$PROTOCOLS_WITH_PORTS->{$proto}) {
die "protocol $proto does not have ports\n";
} elsif ($multidport) {
push @match, "--match multiport", "--dports $rule->{dport}";
} else {
+ return if !$rule->{dport};
push @match, "--dport $rule->{dport}";
}
};
}
};
+ my $add_icmp_type = sub {
+ return if !defined($rule->{'icmp-type'}) || $rule->{'icmp-type'} eq '';
+
+ die "'icmp-type' can only be set if 'icmp', 'icmpv6' or 'ipv6-icmp' is specified\n"
+ if !$is_icmp;
+ my $type = $proto eq 'icmp' ? 'icmp-type' : 'icmpv6-type';
+
+ push @match, "-m $proto --$type $rule->{'icmp-type'}";
+ };
+
# order matters - single port before multiport!
+ $add_icmp_type->();
$add_dport->() if $multisport;
$add_sport->();
$add_dport->() if !$multisport;
$targetstr = $rule->{target};
} else {
my $action = (defined $rule->{action}) ? $rule->{action} : "";
- my $goto = 1 if $action eq 'PVEFW-SET-ACCEPT-MARK';
- $targetstr = ($goto) ? "-g $action" : "-j $action";
+ $targetstr = $action eq 'PVEFW-SET-ACCEPT-MARK' ? "-g $action" : "-j $action";
}
my @iptcmds;
- if (defined $rule->{log} && $rule->{log}) {
- my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $rule->{log});
+ my $log = $rule->{log};
+ if (defined($log) && $log ne 'nolog') {
+ my $loglevel = $log_level_hash->{$log};
+ my $logaction = get_log_rule_base($chain, $vmid, $rule->{logmsg}, $loglevel);
push @iptcmds, "-A $chain $matchstr $logaction";
}
push @iptcmds, "-A $chain $matchstr $targetstr";
}
sub ruleset_generate_rule {
- my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf) = @_;
+ my ($ruleset, $chain, $ipversion, $rule, $cluster_conf, $fw_conf, $vmid) = @_;
my $rules;
# update all or nothing
my @ipt_rule_cmds;
foreach my $r (@$rules) {
- push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf);
+ push @ipt_rule_cmds, ipt_rule_to_cmds($r, $chain, $ipversion, $cluster_conf, $fw_conf, $vmid);
}
foreach my $c (@ipt_rule_cmds) {
ruleset_add_ipt_cmd($ruleset, $chain, $c);
}
sub ruleset_addrule {
- my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
+ my ($ruleset, $chain, $match, $action, $log, $logmsg, $vmid) = @_;
- die "no such chain '$chain'\n" if !$ruleset->{$chain};
+ die "no such chain '$chain'\n" if !$ruleset->{$chain};
- if (defined($log) && $log) {
- my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $log);
+ if ($log) {
+ my $loglevel = $log_level_hash->{$log};
+ my $logaction = get_log_rule_base($chain, $vmid, $logmsg, $loglevel);
push @{$ruleset->{$chain}}, "-A $chain $match $logaction";
- }
- # for stable ebtables digests avoid double-spaces to match ebtables-save output
- $match .= ' ' if length($match);
- push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
+ }
+ # for stable ebtables digests avoid double-spaces to match ebtables-save output
+ $match .= ' ' if length($match);
+ push @{$ruleset->{$chain}}, "-A $chain ${match}$action";
}
sub ruleset_insertrule {
$vmid = 0 if !defined($vmid);
$msg = "" if !defined($msg);
+ my $rlimit = '';
+ if (defined($global_log_ratelimit)) {
+ $rlimit = "-m limit $global_log_ratelimit ";
+ }
+
# Note: we use special format for prefix to pass further
# info to log daemon (VMID, LOGLEVEL and CHAIN)
-
- return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
+ return "${rlimit}-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\"";
}
sub ruleset_add_chain_policy {
} elsif ($policy eq 'REJECT') {
ruleset_addrule($ruleset, $chain, "", "-j PVEFW-Reject");
- ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy:", $vmid);
+ ruleset_addrule($ruleset, $chain, "", "-g PVEFW-reject", $loglevel, "policy $policy: ", $vmid);
} else {
# should not happen
die "internal error: unknown policy '$policy'";
}
sub ruleset_chain_add_conn_filters {
- my ($ruleset, $chain, $accept) = @_;
+ my ($ruleset, $chain, $allow_invalid, $accept) = @_;
- ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
+ if (!$allow_invalid) {
+ ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID", "-j DROP");
+ }
ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED", "-j $accept");
}
if ($cluster_conf->{ipset}->{blacklist}){
if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
ruleset_create_chain($ruleset, "PVEFW-blacklist");
- ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ");
+ ruleset_addrule($ruleset, "PVEFW-blacklist", "", "-j DROP", $loglevel, "DROP: ", 0);
}
my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion);
ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src", "-j PVEFW-blacklist");
if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
if ($ipversion == 4) {
if ($direction eq 'OUT') {
- ruleset_generate_rule($ruleset, $chain, $ipversion,
+ ruleset_generate_rule($ruleset, $chain, $ipversion,
{ action => 'PVEFW-SET-ACCEPT-MARK',
proto => 'udp', sport => 68, dport => 67 });
} else {
}
sub ruleset_generate_vm_rules {
- my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion) = @_;
+ my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion, $vmid) = @_;
my $lc_direction = lc($direction);
} else {
next if $rule->{type} ne $lc_direction;
eval {
+ $rule->{logmsg} = "$rule->{action}: ";
if ($direction eq 'OUT') {
rule_substitude_action($rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" });
- ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf);
+ ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
} else {
rule_substitude_action($rule, { ACCEPT => $in_accept , REJECT => "PVEFW-reject" });
- ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf);
+ ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $vmfw_conf, $vmid);
}
};
warn $@ if $@;
my $tapchain = "$iface-$direction";
my $ipfilter_name = compute_ipfilter_ipset_name($netid);
- my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
+ my $ipfilter_ipset;
+ $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
if $options->{ipfilter} || $vmfw_conf->{ipset}->{$ipfilter_name};
- # create chain with mac and ip filter
- ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
-
if ($options->{enable}) {
- ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion);
+ # create chain with mac and ip filter
+ ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
+
+ ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
if ($direction eq 'OUT') {
$policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
} else {
- $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
+ $policy = $options->{policy_in} || 'DROP'; # allow nothing by default
}
my $accept = generate_nfqueue($options);
}
sub enable_host_firewall {
- my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_;
+ my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf) = @_;
my $options = $hostfw_conf->{options};
my $cluster_options = $cluster_conf->{options};
my $rules = $hostfw_conf->{rules};
my $cluster_rules = $cluster_conf->{rules};
+ # corosync preparation
+ my $corosync_rule = "-p udp --dport 5404:5405";
+ my $corosync_local_addresses = {};
+ my $multicast_enabled;
+ my $local_hostname = PVE::INotify::nodename();
+ if (defined($corosync_conf)) {
+ PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
+ my ($node_name, $node_ip, $node_ipversion, $key) = @_;
+
+ if ($node_name eq $local_hostname) {
+ $corosync_local_addresses->{$key} = $node_ip;
+ }
+ });
+
+ # allow multicast only if enabled in config
+ my $corosync_transport = $corosync_conf->{main}->{totem}->{transport};
+ $multicast_enabled = defined($corosync_transport) && $corosync_transport eq 'udp';
+ }
+
# host inbound firewall
my $chain = "PVEFW-HOST-IN";
ruleset_create_chain($ruleset, $chain);
ruleset_addrule($ruleset, $chain, "-i lo", "-j ACCEPT");
- ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
+ ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
$rule->{iface_in} = $rule->{iface} if $rule->{iface};
eval {
+ $rule->{logmsg} = "$rule->{action}: ";
if ($rule->{type} eq 'group') {
ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
} elsif ($rule->{type} eq 'in') {
rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
- ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf);
+ ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
}
};
warn $@ if $@;
ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22", "-j $accept_action"); # SSH
+ ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 60000:60050", "-j $accept_action"); # Migration
- my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
- my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
+ # corosync inbound rules
+ if (defined($corosync_conf)) {
+ ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
+ if $multicast_enabled;
- # corosync
- if ($localnet && ($ipversion == $localnet_ver)) {
- my $corosync_rule = "-p udp --dport 5404:5405";
- ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule", "-j $accept_action");
- ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action");
+ PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
+ my ($node_name, $node_ip, $node_ipversion, $key) = @_;
+ my $destination = $corosync_local_addresses->{$key};
+
+ if ($node_name ne $local_hostname && defined($destination)) {
+ # accept only traffic on same ring
+ ruleset_addrule($ruleset, $chain, "-d $destination -s $node_ip $corosync_rule", "-j $accept_action");
+ }
+ });
}
# implement input policy
ruleset_addrule($ruleset, $chain, "-o lo", "-j ACCEPT");
- ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
+ ruleset_chain_add_conn_filters($ruleset, $chain, 0, 'ACCEPT');
# we use RETURN because we may want to check other thigs later
$accept_action = 'RETURN';
$rule->{iface_out} = $rule->{iface} if $rule->{iface};
eval {
+ $rule->{logmsg} = "$rule->{action}: ";
if ($rule->{type} eq 'group') {
ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
} elsif ($rule->{type} eq 'out') {
rule_substitude_action($rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" });
- ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf);
+ ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, $cluster_conf, $hostfw_conf, 0);
}
};
warn $@ if $@;
}
# allow standard traffic on cluster network
+ my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
+ my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
+
if ($localnet && ($ipversion == $localnet_ver)) {
ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006", "-j $accept_action"); # PVE API
ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22", "-j $accept_action"); # SSH
ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999", "-j $accept_action"); # PVE VNC Console
ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128", "-j $accept_action"); # SPICE Proxy
+ }
- my $corosync_rule = "-p udp --dport 5404:5405";
- ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule", "-j $accept_action");
- ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action");
+ # corosync outbound rules
+ if (defined($corosync_conf)) {
+ ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule", "-j $accept_action")
+ if $multicast_enabled;
+
+ PVE::Corosync::for_all_corosync_addresses($corosync_conf, $ipversion, sub {
+ my ($node_name, $node_ip, $node_ipversion, $key) = @_;
+ my $source = $corosync_local_addresses->{$key};
+
+ if ($node_name ne $local_hostname && defined($source)) {
+ # accept only traffic on same ring
+ ruleset_addrule($ruleset, $chain, "-s $source -d $node_ip $corosync_rule", "-j $accept_action");
+ }
+ });
}
# implement output policy
}
sub parse_fw_rule {
- my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_;
+ my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env) = @_;
my $orig_line = $line;
last if $rule->{type} eq 'group';
- if ($line =~ s/^-p (\S+)\s*//) {
+ if ($line =~ s/^(?:-p|--?proto) (\S+)\s*//) {
$rule->{proto} = $1;
next;
}
- if ($line =~ s/^-dport (\S+)\s*//) {
+ if ($line =~ s/^--?dport (\S+)\s*//) {
$rule->{dport} = $1;
next;
}
- if ($line =~ s/^-sport (\S+)\s*//) {
+ if ($line =~ s/^--?sport (\S+)\s*//) {
$rule->{sport} = $1;
next;
}
- if ($line =~ s/^-source (\S+)\s*//) {
+ if ($line =~ s/^--?source (\S+)\s*//) {
$rule->{source} = $1;
next;
}
- if ($line =~ s/^-dest (\S+)\s*//) {
+ if ($line =~ s/^--?dest (\S+)\s*//) {
$rule->{dest} = $1;
next;
}
+ if ($line =~ s/^--?log (emerg|alert|crit|err|warning|notice|info|debug|nolog)\s*//) {
+ $rule->{log} = $1;
+ next;
+ }
+ if ($line =~ s/^--?icmp-type (\S+)\s*//) {
+ $rule->{'icmp-type'} = $1;
+ next;
+ }
last;
}
my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
- if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp):\s*(0|1)\s*$/i) {
+ if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp|log_nf_conntrack|nf_conntrack_allow_invalid|protection_synflood):\s*(0|1)\s*$/i) {
$opt = lc($1);
$value = int($2);
} elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) {
$opt = lc($1);
$value = $2 ? lc($3) : '';
- } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) {
+ } elsif ($line =~ m/^(nf_conntrack_helpers):\s*(((\S+)[,]?)+)\s*$/i) {
+ $opt = lc($1);
+ $value = lc($2);
+ pve_fw_verify_conntrack_helper($value);
+ } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established|nf_conntrack_tcp_timeout_syn_recv|protection_synflood_rate|protection_synflood_burst|protection_limit):\s*(\d+)\s*$/i) {
$opt = lc($1);
$value = int($2);
} else {
if (($value > 1) && ((time() - $value) > 60)) {
$value = 0
}
+ } elsif ($line =~ m/^(ebtables):\s*(0|1)\s*$/i) {
+ $opt = lc($1);
+ $value = int($2);
} elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) {
$opt = lc($1);
$value = uc($3);
+ } elsif ($line =~ m/^(log_ratelimit):\s*(\S+)\s*$/) {
+ $opt = lc($1);
+ $value = $2;
} else {
die "can't parse option '$line'\n"
}
}
sub resolve_alias {
- my ($clusterfw_conf, $fw_conf, $cidr) = @_;
+ my ($clusterfw_conf, $fw_conf, $cidr, $scope) = @_;
+
+ # When we're on the cluster level, the cluster config only gets
+ # saved into fw_conf, so we need some extra handling here (to
+ # stay consistent)
+ my ($cluster_config, $local_config);
+ if (!$clusterfw_conf) {
+ ($cluster_config, $local_config) = ($fw_conf, undef);
+ } else {
+ ($cluster_config, $local_config) = ($clusterfw_conf, $fw_conf);
+ }
my $alias = lc($cidr);
- my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
- $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
+ my $e;
+ if ($scope ne 'dc/' && $local_config) {
+ $e = $local_config->{aliases}->{$alias};
+ }
+ if ($scope ne 'guest/' && !$e && $cluster_config) {
+ $e = $cluster_config->{aliases}->{$alias};
+ }
die "no such alias '$cidr'\n" if !$e;;
my ($cidr) = @_;
my $ipversion;
-
+
if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) {
$cidr =~ s|/128$||;
$ipversion = 6;
my ($line) = @_;
# we can add single line comments to the end of the line
- my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//;
+ my $comment = $line =~ s/\s*#\s*(.*?)\s*$// ? decode('utf8', $1) : undef;
if ($line =~ m/^(\S+)\s(\S+)$/) {
my ($name, $cidr) = ($1, $2);
}
sub generic_fw_config_parser {
- my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_;
+ my ($filename, $cluster_conf, $empty_conf, $rule_env) = @_;
my $section;
my $group;
my $res = $empty_conf;
- while (defined(my $line = <$fh>)) {
+ my $raw;
+ if ($filename =~ m!^/etc/pve/(.*)$!) {
+ $raw = PVE::Cluster::get_config($1);
+ } else {
+ $raw = eval { PVE::Tools::file_get_contents($filename) }; # ignore errors
+ }
+ return {} if !$raw;
+
+ my $curr_group_keys = {};
+
+ my $linenr = 0;
+ while ($raw =~ /^\h*(.*?)\h*$/gm) {
+ my $line = $1;
+ $linenr++;
next if $line =~ m/^#/;
next if $line =~ m/^\s*$/;
-
chomp $line;
- my $linenr = $fh->input_line_number();
my $prefix = "$filename (line $linenr)";
if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) {
warn "$prefix: $err";
next;
}
-
+
$res->{$section}->{$group} = [];
$res->{group_comments}->{$group} = decode('utf8', $comment)
if $comment;
$section = 'ipset';
$group = lc($1);
my $comment = $2;
- eval {
+ eval {
die "ipset name too long\n" if length($group) > $max_ipset_name_length;
die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/;
};
}
$res->{$section}->{$group} = [];
+ $curr_group_keys = {};
+
$res->{ipset_comments}->{$group} = decode('utf8', $comment)
if $comment;
next;
warn "$prefix: $@" if $@;
} elsif ($section eq 'rules') {
my $rule;
- eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); };
+ eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env); };
if (my $err = $@) {
warn "$prefix: $err";
next;
push @{$res->{$section}}, $rule;
} elsif ($section eq 'groups') {
my $rule;
- eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); };
+ eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group'); };
if (my $err = $@) {
warn "$prefix: $err";
next;
push @{$res->{$section}->{$group}}, $rule;
} elsif ($section eq 'ipset') {
# we can add single line comments to the end of the rule
- my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//;
+ my $comment = $line =~ s/#\s*(.*?)\s*$// ? decode('utf8', $1) : undef;
$line =~ m/^(\!)?\s*(\S+)\s*$/;
my $nomatch = $1;
$errors->{nomatch} = "nomatch not supported by kernel";
}
- eval {
- if ($cidr =~ m/^${ip_alias_pattern}$/) {
- resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists
+ eval {
+ if ($cidr =~ m@^(dc/|guest/)?(${ip_alias_pattern}$)@) {
+ my $scope = $1 // "";
+ my $alias = $2;
+ resolve_alias($cluster_conf, $res, $alias, $scope); # make sure alias exists
} else {
$cidr = parse_ip_or_cidr($cidr);
}
+ die "duplicate ipset entry for '$cidr'\n"
+ if defined($curr_group_keys->{$cidr});
};
if (my $err = $@) {
chomp $err;
}
push @{$res->{$section}->{$group}}, $entry;
+ $curr_group_keys->{$cidr} = 1;
} else {
warn "$prefix: skip line - unknown section\n";
next;
return $res;
}
-sub parse_hostfw_config {
- my ($filename, $fh, $cluster_conf, $verbose) = @_;
-
- my $empty_conf = { rules => [], options => {}};
-
- return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host');
-}
-
-sub parse_vmfw_config {
- my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_;
-
- my $empty_conf = {
- rules => [],
- options => {},
- aliases => {},
- ipset => {} ,
- ipset_comments => {},
- };
-
- return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env);
-}
-
-sub parse_clusterfw_config {
- my ($filename, $fh, $verbose) = @_;
-
- my $section;
- my $group;
-
- my $empty_conf = {
- rules => [],
- options => {},
- aliases => {},
- groups => {},
- group_comments => {},
- ipset => {} ,
- ipset_comments => {},
- };
-
- return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster');
-}
-
+# this is only used to prevent concurrent runs of rule compilation/application
+# see lock_*_conf for cfs locks protectiong config modification
sub run_locked {
my ($code, @param) = @_;
}
}
} elsif ($d->{type} eq 'lxc') {
- if ($have_lxc) {
- my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
- if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
- $lxc->{$vmid} = $conf;
- }
- }
- }
+ if ($have_lxc) {
+ my $cfspath = PVE::LXC::Config->cfs_config_path($vmid);
+ if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) {
+ $lxc->{$vmid} = $conf;
+ }
+ }
+ }
}
return $vmdata;
};
-sub load_vmfw_conf {
- my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_;
+# FIXME: move use sites over to moved helper and break older packages, then remove this here
+sub lock_vmfw_conf {
+ return PVE::Firewall::Helpers::lock_vmfw_conf(@_);
+}
- my $vmfw_conf = {};
+sub load_vmfw_conf {
+ my ($cluster_conf, $rule_env, $vmid, $dir) = @_;
$dir = $pvefw_conf_dir if !defined($dir);
-
my $filename = "$dir/$vmid.fw";
- if (my $fh = IO::File->new($filename, O_RDONLY)) {
- $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose);
- $vmfw_conf->{vmid} = $vmid;
- }
+
+ my $empty_conf = {
+ rules => [],
+ options => {},
+ aliases => {},
+ ipset => {} ,
+ ipset_comments => {},
+ };
+
+ my $vmfw_conf = generic_fw_config_parser($filename, $cluster_conf, $empty_conf, $rule_env);
+ $vmfw_conf->{vmid} = $vmid;
return $vmfw_conf;
}
$raw .= " -p $rule->{proto}" if $rule->{proto};
$raw .= " -dport $rule->{dport}" if $rule->{dport};
$raw .= " -sport $rule->{sport}" if $rule->{sport};
+ $raw .= " -log $rule->{log}" if $rule->{log};
+ $raw .= " -icmp-type $rule->{'icmp-type'}" if defined($rule->{'icmp-type'}) && $rule->{'icmp-type'} ne '';
}
$raw .= " # " . encode('utf8', $rule->{comment})
my $format_ipsets = sub {
my ($fw_conf) = @_;
-
+
my $raw = '';
foreach my $ipset (sort keys %{$fw_conf->{ipset}}) {
my $nethash = {};
foreach my $entry (@$options) {
- $nethash->{$entry->{cidr}} = $entry;
+ my $cidr = $entry->{cidr};
+ if (defined($nethash->{$cidr})) {
+ warn "ignoring duplicate ipset entry '$cidr'\n";
+ next;
+ }
+
+ $nethash->{$cidr} = $entry;
}
foreach my $cidr (sort keys %$nethash) {
}
}
+# FIXME: remove with 8.0 and break older qemu-server/pve-container
sub remove_vmfw_conf {
- my ($vmid) = @_;
-
- my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw";
-
- unlink $vmfw_conffile;
+ return PVE::Firewall::Helpers::remove_vmfw_conf(@_);
}
+# FIXME: remove with 8.0 and break older qemu-server/pve-container
sub clone_vmfw_conf {
- my ($vmid, $newid) = @_;
-
- my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw";
- my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw";
-
- if (-f $clonevm_conffile) {
- unlink $clonevm_conffile;
- }
- if (-f $sourcevm_conffile) {
- my $data = PVE::Tools::file_get_contents($sourcevm_conffile);
- PVE::Tools::file_set_contents($clonevm_conffile, $data);
- }
+ return PVE::Firewall::Helpers::clone_vmfw_conf(@_);
}
sub read_vm_firewall_configs {
- my ($cluster_conf, $vmdata, $dir, $verbose) = @_;
+ my ($cluster_conf, $vmdata, $dir) = @_;
my $vmfw_configs = {};
foreach my $vmid (keys %{$vmdata->{qemu}}) {
- my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose);
- next if !$vmfw_conf->{options}; # skip if file does not exists
+ my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir);
+ next if !$vmfw_conf->{options}; # skip if file does not exist
$vmfw_configs->{$vmid} = $vmfw_conf;
}
foreach my $vmid (keys %{$vmdata->{lxc}}) {
- my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose);
- next if !$vmfw_conf->{options}; # skip if file does not exists
+ my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir);
+ next if !$vmfw_conf->{options}; # skip if file does not exist
$vmfw_configs->{$vmid} = $vmfw_conf;
}
return undef if $v eq '' || $v eq 'nolog';
- $v = $log_level_hash->{$v} if defined($log_level_hash->{$v});
-
- return $v if ($v >= 0) && ($v <= 7);
+ return $v if defined($log_level_hash->{$v});
warn "unknown log level ($k = '$v')\n";
ruleset_create_chain($ruleset, $chain);
foreach my $rule (@{$std_chains->{$chain}}) {
if (ref($rule)) {
- ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
+ ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 0);
} else {
die "rule $rule as string - should not happen";
}
next if $entry->{errors}; # skip entries with errors
eval {
my ($cidr, $ver);
- if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
- ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
+ if ($entry->{cidr} =~ m@^(dc/|guest/)?(${ip_alias_pattern})$@) {
+ my $scope = $1 // "";
+ my $alias = $2;
+ ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $alias, $scope);
} else {
($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
}
$hashsize = round_powerof2($hashsize);
}
+ my $bucketsize = 12; # lower than the default of 14, faster but slightly more memory use
+
my $family = $ipversion == "6" ? "inet6" : "inet";
- $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
+ $ipset_ruleset->{$name} = [
+ "create $name hash:net family $family hashsize $hashsize maxelem $hashsize bucketsize $bucketsize"
+ ];
foreach my $cidr (sort keys %$data) {
my $entry = $data->{$cidr};
return ++$int;
}
+my $set_global_log_ratelimit = sub {
+ my $cluster_opts = shift;
+
+ $global_log_ratelimit = '--limit 1/sec';
+ if (defined(my $log_rlimit = $cluster_opts->{log_ratelimit})) {
+ my $ll_format = $cluster_option_properties->{log_ratelimit}->{format};
+ my $limit = PVE::JSONSchema::parse_property_string($ll_format, $log_rlimit);
+
+ if ($limit->{enable}) {
+ if (my $rate = $limit->{rate}) {
+ $global_log_ratelimit = "--limit $rate";
+ }
+ if (my $burst = $limit->{burst}) {
+ $global_log_ratelimit .= " --limit-burst $burst";
+ }
+ } else {
+ $global_log_ratelimit = undef;
+ }
+ }
+};
+
+sub lock_clusterfw_conf {
+ my ($timeout, $code, @param) = @_;
+
+ my $res = PVE::Cluster::cfs_lock_firewall("cluster", $timeout, $code, @param);
+ die $@ if $@;
+
+ return $res;
+}
+
sub load_clusterfw_conf {
- my ($filename, $verbose) = @_;
+ my ($filename) = @_;
$filename = $clusterfw_conf_filename if !defined($filename);
+ my $empty_conf = {
+ rules => [],
+ options => {},
+ aliases => {},
+ groups => {},
+ group_comments => {},
+ ipset => {} ,
+ ipset_comments => {},
+ };
- my $cluster_conf = {};
- if (my $fh = IO::File->new($filename, O_RDONLY)) {
- $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose);
- }
+ my $cluster_conf = generic_fw_config_parser($filename, $empty_conf, $empty_conf, 'cluster');
+ $set_global_log_ratelimit->($cluster_conf->{options});
return $cluster_conf;
}
$raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases);
$raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset};
-
+
my $rules = $cluster_conf->{rules};
if ($rules && scalar(@$rules)) {
$raw .= "[RULES]\n\n";
}
}
+sub lock_hostfw_conf : prototype($$$@) {
+ my ($node, $timeout, $code, @param) = @_;
+
+ $node = $nodename if !defined($node);
+
+ my $res = PVE::Cluster::cfs_lock_firewall("host-$node", $timeout, $code, @param);
+ die $@ if $@;
+
+ return $res;
+}
+
sub load_hostfw_conf {
- my ($cluster_conf, $filename, $verbose) = @_;
+ my ($cluster_conf, $filename) = @_;
$filename = $hostfw_conf_filename if !defined($filename);
- my $hostfw_conf = {};
- if (my $fh = IO::File->new($filename, O_RDONLY)) {
- $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose);
- }
- return $hostfw_conf;
+ my $empty_conf = { rules => [], options => {}};
+ return generic_fw_config_parser($filename, $cluster_conf, $empty_conf, 'host');
}
sub save_hostfw_conf {
- my ($hostfw_conf) = @_;
+ my ($hostfw_conf, $filename) = @_;
+
+ $filename = $hostfw_conf_filename if !defined($filename);
my $raw = '';
}
if ($raw) {
- PVE::Tools::file_set_contents($hostfw_conf_filename, $raw);
+ PVE::Tools::file_set_contents($filename, $raw);
} else {
- unlink $hostfw_conf_filename;
+ unlink $filename;
}
}
sub compile {
- my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_;
+ my ($cluster_conf, $hostfw_conf, $vmdata, $corosync_conf) = @_;
my $vmfw_configs;
if ($vmdata) { # test mode
my $testdir = $vmdata->{testdir} || die "no test directory specified";
my $filename = "$testdir/cluster.fw";
- $cluster_conf = load_clusterfw_conf($filename, $verbose);
+ $cluster_conf = load_clusterfw_conf($filename);
$filename = "$testdir/host.fw";
- $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose);
+ $hostfw_conf = load_hostfw_conf($cluster_conf, $filename);
- $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose);
+ $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir);
} else { # normal operation
- $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf;
+ $cluster_conf = load_clusterfw_conf(undef) if !$cluster_conf;
+
+ $hostfw_conf = load_hostfw_conf($cluster_conf, undef) if !$hostfw_conf;
- $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf;
+ # cfs_update is handled by daemon or API
+ $corosync_conf = PVE::Cluster::cfs_read_file("corosync.conf")
+ if !defined($corosync_conf) && PVE::Corosync::check_conf_exists(1);
$vmdata = read_local_vm_config();
- $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
+ $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef);
}
- return ({},{},{}) if !$cluster_conf->{options}->{enable};
+ return ({},{},{},{}) if !$cluster_conf->{options}->{enable};
my $localnet;
if ($cluster_conf->{aliases}->{local_network}) {
my $localnet_ver;
($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
- $cluster_conf->{aliases}->{local_network} = {
+ $cluster_conf->{aliases}->{local_network} = {
name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
}
push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
- my $ruleset = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
- my $rulesetv6 = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose);
- my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $verbose);
+ my $ruleset = {};
+ my $rulesetv6 = {};
+ $ruleset->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
+ $ruleset->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 4);
+ $rulesetv6->{filter} = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
+ $rulesetv6->{raw} = compile_iptables_raw($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, 6);
+ my $ebtables_ruleset = compile_ebtables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata);
my $ipset_ruleset = compile_ipsets($cluster_conf, $vmfw_configs, $vmdata);
return ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset);
}
+sub compile_iptables_raw {
+ my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
+
+ my $ruleset = {};
+
+ my $hostfw_options = $hostfw_conf->{options} || {};
+ my $protection_synflood = $hostfw_options->{protection_synflood} || 0;
+ my $conntrack_helpers = $hostfw_options->{nf_conntrack_helpers} || '';
+
+ ruleset_create_chain($ruleset, "PVEFW-PREROUTING") if $protection_synflood != 0 || $conntrack_helpers ne '';
+
+ if($protection_synflood) {
+
+ my $protection_synflood_rate = $hostfw_options->{protection_synflood_rate} ? $hostfw_options->{protection_synflood_rate} : 200;
+ my $protection_synflood_burst = $hostfw_options->{protection_synflood_burst} ? $hostfw_options->{protection_synflood_burst} : 1000;
+ my $protection_synflood_limit = $hostfw_options->{protection_synflood_limit} ? $hostfw_options->{protection_synflood_limit} : 3000;
+ my $protection_synflood_expire = $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} ? $hostfw_options->{nf_conntrack_tcp_timeout_syn_recv} : 60;
+ $protection_synflood_expire = $protection_synflood_expire * 1000;
+ my $protection_synflood_mask = $ipversion == 4 ? 32 : 64;
+
+ ruleset_addrule($ruleset, "PVEFW-PREROUTING", "-p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m hashlimit --hashlimit-above $protection_synflood_rate/sec --hashlimit-burst $protection_synflood_burst --hashlimit-mode srcip --hashlimit-name syn --hashlimit-htable-size 2097152 --hashlimit-srcmask $protection_synflood_mask --hashlimit-htable-expire $protection_synflood_expire", "-j DROP");
+ }
+
+ foreach my $conntrack_helper (split(/,/, $conntrack_helpers)) {
+ my $helper = $pve_fw_helpers->{$conntrack_helper};
+ ruleset_addrule($ruleset, "PVEFW-PREROUTING", "-p $helper->{proto} -m $helper->{proto} --dport $helper->{dport} -j CT", "--helper $conntrack_helper") if $helper && $helper->{"v$ipversion"};
+ }
+
+ return $ruleset;
+}
+
sub compile_iptables_filter {
- my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
+ my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $corosync_conf, $ipversion) = @_;
my $ruleset = {};
# fixme: what log level should we use here?
my $loglevel = get_option_log_level($hostfw_options, "log_level_out");
- ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT");
+ my $conn_allow_invalid = $hostfw_options->{nf_conntrack_allow_invalid} // 0;
+ ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", $conn_allow_invalid, "ACCEPT");
ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
if ($hostfw_enable) {
- eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
+ eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion, $corosync_conf); };
warn $@ if $@; # just to be sure - should not happen
}
eval {
my $conf = $vmdata->{qemu}->{$vmid};
my $vmfw_conf = $vmfw_configs->{$vmid};
- return if !$vmfw_conf;
+ return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
foreach my $netid (sort keys %$conf) {
next if $netid !~ m/^net(\d+)$/;
my $net = PVE::QemuServer::parse_net($conf->{$netid});
next if !$net->{firewall};
- my $iface = "tap${vmid}i$1";
+ my $iface = "tap${vmid}i$1";
my $macaddr = $net->{macaddr};
generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
- $vmfw_conf, $vmid, 'IN', $ipversion);
+ $vmfw_conf, $vmid, 'IN', $ipversion);
generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
- $vmfw_conf, $vmid, 'OUT', $ipversion);
+ $vmfw_conf, $vmid, 'OUT', $ipversion);
}
};
warn $@ if $@; # just to be sure - should not happen
# generate firewall rules for LXC containers
foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
- eval {
- my $conf = $vmdata->{lxc}->{$vmid};
- my $vmfw_conf = $vmfw_configs->{$vmid};
- return if !$vmfw_conf;
-
- if ($vmfw_conf->{options}->{enable}) {
- foreach my $netid (sort keys %$conf) {
- next if $netid !~ m/^net(\d+)$/;
- my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
- next if !$net->{firewall};
- my $iface = "veth${vmid}i$1";
- my $macaddr = $net->{hwaddr};
- generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
- $vmfw_conf, $vmid, 'IN', $ipversion);
- generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
- $vmfw_conf, $vmid, 'OUT', $ipversion);
- }
- }
- };
- warn $@ if $@; # just to be sure - should not happen
+ eval {
+ my $conf = $vmdata->{lxc}->{$vmid};
+ my $vmfw_conf = $vmfw_configs->{$vmid};
+ return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
+
+ foreach my $netid (sort keys %$conf) {
+ next if $netid !~ m/^net(\d+)$/;
+ my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
+ next if !$net->{firewall};
+
+ my $iface = "veth${vmid}i$1";
+ my $macaddr = $net->{hwaddr};
+ generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
+ $vmfw_conf, $vmid, 'IN', $ipversion);
+ generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
+ $vmfw_conf, $vmid, 'OUT', $ipversion);
+ }
+ };
+ warn $@ if $@; # just to be sure - should not happen
}
- if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){
+ if (ruleset_chain_exist($ruleset, "PVEFW-IPS")){
ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED", "-j PVEFW-IPS");
}
my $localnet_ver;
($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
- $cluster_conf->{aliases}->{local_network} = {
+ $cluster_conf->{aliases}->{local_network} = {
name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
}
return if !$vmfw_conf;
# When the 'ipfilter' option is enabled every device for which there
- # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
+ # is no 'ipfilter-netX' ipset defined gets an implicit empty default
# ipset.
# The reason is that ipfilter ipsets are always filled with standard
# IPv6 link-local filters.
return if !$vmfw_conf;
# When the 'ipfilter' option is enabled every device for which there
- # is no 'ipfilter-netX' ipset defiend gets an implicit empty default
+ # is no 'ipfilter-netX' ipset defined gets an implicit empty default
# ipset.
# The reason is that ipfilter ipsets are always filled with standard
# IPv6 link-local filters, as well as the IP addresses configured
}
sub compile_ebtables_filter {
- my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $verbose) = @_;
+ my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata) = @_;
- return ({}, {}) if !$cluster_conf->{options}->{enable};
+ if (!($cluster_conf->{options}->{ebtables} // 1)) {
+ return {};
+ }
my $ruleset = {};
ruleset_create_chain($ruleset, "PVEFW-FORWARD");
-
ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT");
#for ipv4 and ipv6, check macaddress in iptables, so we use conntrack 'ESTABLISHED', to speedup rules
ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-p IPv4', '-j ACCEPT');
ruleset_addrule($ruleset, 'PVEFW-FORWARD', '-o fwln+', '-j PVEFW-FWBR-OUT');
# generate firewall rules for QEMU VMs
- foreach my $vmid (keys %{$vmdata->{qemu}}) {
+ foreach my $vmid (sort keys %{$vmdata->{qemu}}) {
eval {
my $conf = $vmdata->{qemu}->{$vmid};
my $vmfw_conf = $vmfw_configs->{$vmid};
- return if !$vmfw_conf;
+ return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
+ my $ipsets = $vmfw_conf->{ipset};
- foreach my $netid (keys %$conf) {
+ foreach my $netid (sort keys %$conf) {
next if $netid !~ m/^net(\d+)$/;
my $net = PVE::QemuServer::parse_net($conf->{$netid});
next if !$net->{firewall};
my $iface = "tap${vmid}i$1";
my $macaddr = $net->{macaddr};
-
- generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid);
-
+ my $arpfilter = [];
+ if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
+ foreach my $ipaddr (@$ipset) {
+ my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
+ next if !$ip || ($version && $version != 4);
+ push(@$arpfilter, $ip);
+ }
+ }
+ generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
}
};
warn $@ if $@; # just to be sure - should not happen
}
# generate firewall rules for LXC containers
- foreach my $vmid (keys %{$vmdata->{lxc}}) {
+ foreach my $vmid (sort keys %{$vmdata->{lxc}}) {
eval {
my $conf = $vmdata->{lxc}->{$vmid};
my $vmfw_conf = $vmfw_configs->{$vmid};
return if !$vmfw_conf || !$vmfw_conf->{options}->{enable};
+ my $ipsets = $vmfw_conf->{ipset};
- foreach my $netid (keys %$conf) {
+ foreach my $netid (sort keys %$conf) {
next if $netid !~ m/^net(\d+)$/;
my $net = PVE::LXC::Config->parse_lxc_network($conf->{$netid});
next if !$net->{firewall};
my $iface = "veth${vmid}i$1";
my $macaddr = $net->{hwaddr};
- generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid);
+ my $arpfilter = [];
+ if (defined(my $ipset = $ipsets->{"ipfilter-$netid"})) {
+ foreach my $ipaddr (@$ipset) {
+ my($ip, $version) = parse_ip_or_cidr($ipaddr->{cidr});
+ next if !$ip || ($version && $version != 4);
+ push(@$arpfilter, $ip);
+ }
+ }
+ if (defined(my $ip = $net->{ip}) && $vmfw_conf->{options}->{ipfilter}) {
+ # ebtables changes this to a .0/MASK network but we just
+ # want the address here, no network - see #2193
+ $ip =~ s|/(\d+)$||;
+ if ($ip ne 'dhcp') {
+ push @$arpfilter, $ip;
+ }
+ }
+ generate_tap_layer2filter($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter);
}
};
warn $@ if $@; # just to be sure - should not happen
}
sub generate_tap_layer2filter {
- my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid) = @_;
+ my ($ruleset, $iface, $macaddr, $vmfw_conf, $vmid, $arpfilter) = @_;
my $options = $vmfw_conf->{options};
my $tapchain = $iface."-OUT";
ruleset_create_chain($ruleset, $tapchain);
if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
- ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP');
+ ruleset_addrule($ruleset, $tapchain, "-s ! $macaddr", '-j DROP');
+ }
+
+ if (@$arpfilter){
+ my $arpchain = $tapchain."-ARP";
+ ruleset_addrule($ruleset, $tapchain, "-p ARP", "-j $arpchain");
+ ruleset_create_chain($ruleset, $arpchain);
+
+ foreach my $ip (@{$arpfilter}) {
+ ruleset_addrule($ruleset, $arpchain, "-p ARP --arp-ip-src $ip", '-j RETURN');
+ }
+ ruleset_addrule($ruleset, $arpchain, '', '-j DROP');
}
if (defined($options->{layer2_protocols})){
+ my $protochain = $tapchain."-PROTO";
+ ruleset_addrule($ruleset, $tapchain, '', "-j $protochain");
+ ruleset_create_chain($ruleset, $protochain);
+
foreach my $proto (split(/,/, $options->{layer2_protocols})) {
- ruleset_addrule($ruleset, $tapchain, "-p $proto", '-j ACCEPT');
+ ruleset_addrule($ruleset, $protochain, "-p $proto", '-j RETURN');
}
- ruleset_addrule($ruleset, $tapchain, '', "-j DROP");
- } else {
- ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT');
+ ruleset_addrule($ruleset, $protochain, '', '-j DROP');
}
+ ruleset_addrule($ruleset, $tapchain, '', '-j ACCEPT');
+
ruleset_addrule($ruleset, 'PVEFW-FWBR-OUT', "-i $iface", "-j $tapchain");
}
+# the parameter $change_only_regex changes two things if defined:
+# * all chains not matching it will be left intact
+# * both the $active_chains hash and the returned status_hash have different
+# structure (they contain a key named 'rules').
sub get_ruleset_status {
- my ($ruleset, $active_chains, $digest_fn, $verbose) = @_;
+ my ($ruleset, $active_chains, $digest_fn, $change_only_regex) = @_;
my $statushash = {};
foreach my $chain (sort keys %$ruleset) {
- my $sig = &$digest_fn($ruleset->{$chain});
+ my $rules = $ruleset->{$chain};
+ my $sig = &$digest_fn($rules);
+ my $oldsig;
$statushash->{$chain}->{sig} = $sig;
-
- my $oldsig = $active_chains->{$chain};
+ if (defined($change_only_regex)) {
+ $oldsig = $active_chains->{$chain}->{sig};
+ $statushash->{$chain}->{rules} = $rules;
+ } else {
+ $oldsig = $active_chains->{$chain};
+ }
if (!defined($oldsig)) {
$statushash->{$chain}->{action} = 'create';
} else {
$statushash->{$chain}->{action} = 'update';
}
}
- print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose;
- foreach my $cmd (@{$ruleset->{$chain}}) {
- print "\t$cmd\n" if $verbose;
+ if ($verbose) {
+ print "$statushash->{$chain}->{action} $chain ($sig)\n";
+ foreach my $cmd (@{$rules}) {
+ print "\t$cmd\n";
+ }
}
}
foreach my $chain (sort keys %$active_chains) {
- if (!defined($ruleset->{$chain})) {
- my $sig = $active_chains->{$chain};
- $statushash->{$chain}->{action} = 'delete';
- $statushash->{$chain}->{sig} = $sig;
- print "delete $chain ($sig)\n" if $verbose;
+ next if defined($ruleset->{$chain});
+ my $action = 'delete';
+ my $sig = $active_chains->{$chain};
+ if (defined($change_only_regex)) {
+ $action = 'ignore' if ($chain !~ m/$change_only_regex/);
+ $statushash->{$chain}->{rules} = $active_chains->{$chain}->{rules};
+ $statushash->{$chain}->{policy} = $active_chains->{$chain}->{policy};
+ $sig = $sig->{sig};
}
+ $statushash->{$chain}->{action} = $action;
+ $statushash->{$chain}->{sig} = $sig;
+ print "$action $chain ($sig)\n" if $verbose;
}
return $statushash;
}
sub get_ruleset_cmdlist {
- my ($ruleset, $verbose, $iptablescmd) = @_;
+ my ($ruleset, $iptablescmd, $table) = @_;
- my $cmdlist = "*filter\n"; # we pass this to iptables-restore;
+ $table = 'filter' if !$table;
- my ($active_chains, $hooks) = iptables_get_chains($iptablescmd);
- my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
+ my $cmdlist = "*$table\n"; # we pass this to iptables-restore;
+
+ my ($active_chains, $hooks) = iptables_get_chains($iptablescmd, $table);
+ my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest);
# create missing chains first
foreach my $chain (sort keys %$ruleset) {
$cmdlist .= ":$chain - [0:0]\n";
}
- foreach my $h (qw(INPUT OUTPUT FORWARD)) {
+ foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
my $chain = "PVEFW-$h";
if ($ruleset->{$chain} && !$hooks->{$h}) {
$cmdlist .= "-A $h -j $chain\n";
next if $chain eq 'PVEFW-INPUT';
next if $chain eq 'PVEFW-OUTPUT';
next if $chain eq 'PVEFW-FORWARD';
+ next if $chain eq 'PVEFW-PREROUTING';
$cmdlist .= "-X $chain\n";
}
- my $changes = $cmdlist ne "*filter\n" ? 1 : 0;
+ my $changes = $cmdlist ne "*$table\n" ? 1 : 0;
$cmdlist .= "COMMIT\n";
return wantarray ? ($cmdlist, $changes) : $cmdlist;
}
+my $pve_ebtables_chainname_regex = qr/PVEFW-\S+|(?:tap|veth)\d+i\d+-(?:IN|OUT)/;
+
sub get_ebtables_cmdlist {
- my ($ruleset, $verbose) = @_;
+ my ($ruleset) = @_;
my $changes = 0;
my $cmdlist = "*filter\n";
- my ($active_chains, $hooks) = ebtables_get_chains();
- my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose);
-
- # create chains first
- foreach my $chain (sort keys %$ruleset) {
- my $stat = $statushash->{$chain};
- die "internal error" if !$stat;
- $cmdlist .= ":$chain ACCEPT\n";
- }
+ my $active_chains = ebtables_get_chains();
+ my $statushash = get_ruleset_status($ruleset, $active_chains,
+ \&iptables_chain_digest,
+ $pve_ebtables_chainname_regex);
- if ($ruleset->{'PVEFW-FORWARD'}) {
- $cmdlist .= "-A FORWARD -j PVEFW-FORWARD\n";
+ # create chains first and make sure PVE rules are evaluated if active
+ my $append_pve_to_forward = '-A FORWARD -j PVEFW-FORWARD';
+ my $pve_include = 0;
+ foreach my $chain (sort keys %$statushash) {
+ next if ($statushash->{$chain}->{action} eq 'delete');
+ my $policy = $statushash->{$chain}->{policy} // 'ACCEPT';
+ $cmdlist .= ":$chain $policy\n";
+ $pve_include = 1 if ($chain eq 'PVEFW-FORWARD');
}
- foreach my $chain (sort keys %$ruleset) {
+ foreach my $chain (sort keys %$statushash) {
my $stat = $statushash->{$chain};
- die "internal error" if !$stat;
- $changes = 1 if ($stat->{action} ne 'exists');
+ $changes = 1 if ($stat->{action} !~ 'ignore|exists');
+ next if ($stat->{action} eq 'delete');
- foreach my $cmd (@{$ruleset->{$chain}}) {
+ foreach my $cmd (@{$statushash->{$chain}->{'rules'}}) {
+ if ($chain eq 'FORWARD' && $cmd eq $append_pve_to_forward) {
+ next if ! $pve_include;
+ $pve_include = 0;
+ }
$cmdlist .= "$cmd\n";
}
}
+ $cmdlist .= "$append_pve_to_forward\n" if $pve_include;
return wantarray ? ($cmdlist, $changes) : $cmdlist;
}
sub get_ipset_cmdlist {
- my ($ruleset, $verbose) = @_;
+ my ($ruleset) = @_;
my $cmdlist = "";
my $delete_cmdlist = "";
my $active_chains = ipset_get_chains();
- my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose);
+ my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest);
# remove stale _swap chains
foreach my $chain (keys %$active_chains) {
}
sub apply_ruleset {
- my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset, $verbose) = @_;
+ my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = @_;
enable_bridge_firewall();
my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) =
- get_ipset_cmdlist($ipset_ruleset, $verbose);
+ get_ipset_cmdlist($ipset_ruleset);
- my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose);
- my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables");
- my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset, $verbose);
+ my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset->{filter});
+ my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6->{filter}, "ip6tables");
+ my ($ebtables_cmdlist, $ebtables_changes) = get_ebtables_cmdlist($ebtables_ruleset);
+ my ($cmdlist_raw, $changes_raw) = get_ruleset_cmdlist($ruleset->{raw}, undef, 'raw');
+ my ($cmdlistv6_raw, $changesv6_raw) = get_ruleset_cmdlist($rulesetv6->{raw}, "ip6tables", 'raw');
if ($verbose) {
if ($ipset_changes) {
print $cmdlistv6;
}
+ if ($changes_raw) {
+ print "iptables table raw changes:\n";
+ print $cmdlist_raw;
+ }
+
+ if ($changesv6_raw) {
+ print "ip6tables table raw changes:\n";
+ print $cmdlistv6_raw;
+ }
+
if ($ebtables_changes) {
print "ebtables changes:\n";
print $ebtables_cmdlist;
iptables_restore_cmdlist($cmdlist);
+ $tmpfile = "$pve_fw_status_dir/ip4cmdlistraw";
+ PVE::Tools::file_set_contents($tmpfile, $cmdlist_raw || '');
+
+ iptables_restore_cmdlist($cmdlist_raw, 'raw');
+
$tmpfile = "$pve_fw_status_dir/ip6cmdlist";
PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
ip6tables_restore_cmdlist($cmdlistv6);
+ $tmpfile = "$pve_fw_status_dir/ip6cmdlistraw";
+ PVE::Tools::file_set_contents($tmpfile, $cmdlistv6_raw || '');
+
+ ip6tables_restore_cmdlist($cmdlistv6_raw, 'raw');
+
$tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
PVE::Tools::file_set_contents($tmpfile, $ebtables_cmdlist || '');
# test: re-read status and check if everything is up to date
+ my $ruleset_filter = $ruleset->{filter};
my $active_chains = iptables_get_chains();
- my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0);
+ my $statushash = get_ruleset_status($ruleset_filter, $active_chains, \&iptables_chain_digest);
my $errors;
- foreach my $chain (sort keys %$ruleset) {
+ foreach my $chain (sort keys %$ruleset_filter) {
my $stat = $statushash->{$chain};
if ($stat->{action} ne 'exists') {
warn "unable to update chain '$chain'\n";
}
}
+ my $rulesetv6_filter = $rulesetv6->{filter};
my $active_chainsv6 = iptables_get_chains("ip6tables");
- my $statushashv6 = get_ruleset_status($rulesetv6, $active_chainsv6, \&iptables_chain_digest, 0);
+ my $statushashv6 = get_ruleset_status($rulesetv6_filter, $active_chainsv6, \&iptables_chain_digest);
- foreach my $chain (sort keys %$rulesetv6) {
+ foreach my $chain (sort keys %$rulesetv6_filter) {
my $stat = $statushashv6->{$chain};
if ($stat->{action} ne 'exists') {
warn "unable to update chain '$chain'\n";
}
}
+ my $ruleset_raw = $ruleset->{raw};
+ my $active_chains_raw = iptables_get_chains(undef, 'raw');
+ my $statushash_raw = get_ruleset_status($ruleset_raw, $active_chains_raw, \&iptables_chain_digest);
+
+ foreach my $chain (sort keys %$ruleset_raw) {
+ my $stat = $statushash_raw->{$chain};
+ if ($stat->{action} ne 'exists') {
+ warn "unable to update chain '$chain'\n";
+ $errors = 1;
+ }
+ }
+
+ my $rulesetv6_raw = $rulesetv6->{raw};
+ my $active_chainsv6_raw = iptables_get_chains("ip6tables", 'raw');
+ my $statushashv6_raw = get_ruleset_status($rulesetv6_raw, $active_chainsv6_raw, \&iptables_chain_digest);
+
+ foreach my $chain (sort keys %$rulesetv6_raw) {
+ my $stat = $statushashv6_raw->{$chain};
+ if ($stat->{action} ne 'exists') {
+ warn "unable to update chain '$chain'\n";
+ $errors = 1;
+ }
+ }
+
my $active_ebtables_chains = ebtables_get_chains();
- my $ebtables_statushash = get_ruleset_status($ebtables_ruleset, $active_ebtables_chains, \&iptables_chain_digest, 0);
+ my $ebtables_statushash = get_ruleset_status($ebtables_ruleset,
+ $active_ebtables_chains, \&iptables_chain_digest,
+ $pve_ebtables_chainname_regex);
foreach my $chain (sort keys %$ebtables_ruleset) {
my $stat = $ebtables_statushash->{$chain};
update_nf_conntrack_tcp_timeout_established($hostfw_conf);
+ update_nf_conntrack_tcp_timeout_syn_recv($hostfw_conf);
+
+ update_nf_conntrack_logging($hostfw_conf);
}
sub update_nf_conntrack_max {
my ($hostfw_conf) = @_;
- my $max = 65536; # reasonable default
+ my $max = 262144; # reasonable default (2^16 * 4), see nf_conntrack-sysctl docs
my $options = $hostfw_conf->{options} || {};
PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value);
}
+sub update_nf_conntrack_tcp_timeout_syn_recv {
+ my ($hostfw_conf) = @_;
+
+ my $options = $hostfw_conf->{options} || {};
+
+ my $value = defined($options->{nf_conntrack_tcp_timeout_syn_recv}) ? $options->{nf_conntrack_tcp_timeout_syn_recev} : 60;
+
+ PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_syn_recv", $value);
+}
+
+my $log_nf_conntrack_enabled = undef;
+sub update_nf_conntrack_logging {
+ my ($hostfw_conf) = @_;
+
+ my $options = $hostfw_conf->{options} || {};
+ my $value = $options->{log_nf_conntrack} || 0;
+ if (!defined($log_nf_conntrack_enabled)
+ || $value != $log_nf_conntrack_enabled)
+ {
+ my $tmpfile = "$pve_fw_status_dir/log_nf_conntrack";
+ PVE::Tools::file_set_contents($tmpfile, $value);
+
+ run_command([qw(systemctl try-reload-or-restart pvefw-logger.service)]);
+ $log_nf_conntrack_enabled = $value;
+ }
+}
+
sub remove_pvefw_chains {
PVE::Firewall::remove_pvefw_chains_iptables("iptables");
PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
+ PVE::Firewall::remove_pvefw_chains_iptables("iptables", "raw");
+ PVE::Firewall::remove_pvefw_chains_iptables("ip6tables", "raw");
PVE::Firewall::remove_pvefw_chains_ipset();
+ PVE::Firewall::remove_pvefw_chains_ebtables();
}
sub remove_pvefw_chains_iptables {
- my ($iptablescmd) = @_;
+ my ($iptablescmd, $table) = @_;
- my ($chash, $hooks) = iptables_get_chains($iptablescmd);
- my $cmdlist = "*filter\n";
+ $table = 'filter' if !$table;
+
+ my ($chash, $hooks) = iptables_get_chains($iptablescmd, $table);
+ my $cmdlist = "*$table\n";
- foreach my $h (qw(INPUT OUTPUT FORWARD)) {
+ foreach my $h (qw(INPUT OUTPUT FORWARD PREROUTING)) {
if ($hooks->{$h}) {
$cmdlist .= "-D $h -j PVEFW-$h\n";
}
$cmdlist .= "COMMIT\n";
if($iptablescmd eq "ip6tables") {
- ip6tables_restore_cmdlist($cmdlist);
+ ip6tables_restore_cmdlist($cmdlist, $table);
} else {
- iptables_restore_cmdlist($cmdlist);
+ iptables_restore_cmdlist($cmdlist, $table);
}
}
my $ipset_chains = ipset_get_chains();
my $cmdlist = "";
-
+
foreach my $chain (keys %$ipset_chains) {
$cmdlist .= "flush $chain\n";
$cmdlist .= "destroy $chain\n";
ipset_restore_cmdlist($cmdlist) if $cmdlist;
}
+sub remove_pvefw_chains_ebtables {
+ # apply empty ruleset = remove all our chains
+ ebtables_restore_cmdlist(get_ebtables_cmdlist({}));
+}
+
sub init {
my $cluster_conf = load_clusterfw_conf();
my $cluster_options = $cluster_conf->{options};
projects / pve-firewall.git / blobdiff