X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=src%2FPVE%2FFirewall.pm;h=62b138935389fb68377e3bcc9d3d40846dbdcc94;hb=eb962d2f22ad15ccc663d4fe9e1580c7a2ab79bf;hp=bef88e52284012495158789d3c26509dac7e4ad9;hpb=17da5c0fcbc7dbc9d7c1b2ba38605a3a229f51e8;p=pve-firewall.git

diff --git a/src/PVE/Firewall.pm b/src/PVE/Firewall.pm
index bef88e5..62b1389 100644
--- a/src/PVE/Firewall.pm
+++ b/src/PVE/Firewall.pm
@@ -37,9 +37,13 @@ eval {
     $have_pve_manager = 1;
 };
 
+my $pve_fw_status_dir = "/var/lib/pve-firewall";
+
+mkdir $pve_fw_status_dir; # make sure this exists
+
 my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
 my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
-my $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
+our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+';
 
 my $max_alias_name_length = 64;
 my $max_ipset_name_length = 64;
@@ -128,6 +132,27 @@ my $log_level_hash = {
     emerg => 0,
 };
 
+# we need to overwrite some macros for ipv6
+my $pve_ipv6fw_macros = {
+    'Ping' => [
+	{ action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
+    ],
+    'NeighborDiscovery' => [
+	"IPv6 neighbor solicitation, neighbor and router advertisement",
+	{ action => 'PARAM', proto => 'icmpv6', dport => 'router-solicitation' },
+	{ action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' },
+	{ action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' },
+	{ action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' },
+    ],
+    'DHCPv6' => [
+	{ action => 'PARAM', proto => 'udp', dport => '546:547', sport => '546:547' },
+    ],
+    'Trcrt' => [
+	{ action => 'PARAM', proto => 'udp', dport => '33434:33524' },
+	{ action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' },
+    ],
+ };
+
 # imported/converted from: /usr/share/shorewall/macro.*
 my $pve_fw_macros = {
     'Amanda' => [
@@ -482,6 +507,7 @@ my $pve_fw_macros = {
 
 my $pve_fw_parsed_macros;
 my $pve_fw_macro_descr;
+my $pve_fw_macro_ipversion = {};
 my $pve_fw_preferred_macro_names = {};
 
 my $pve_std_chains = {};
@@ -581,15 +607,17 @@ $pve_std_chains->{6} = {
         # simply DROP BROADCAST/MULTICAST/ANYCAST
         # we can use this to reduce logging
         #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6
-        { action => 'DROP', dsttype => 'MULTICAST' },
-        { action => 'DROP', dsttype => 'ANYCAST' },
+	# ipv6 addrtype does not work with kernel 2.6.32
+	#{ action => 'DROP', dsttype => 'MULTICAST' },
+        #{ action => 'DROP', dsttype => 'ANYCAST' },
+        { action => 'DROP', dest => 'ff00::/8' },
         #{ 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' },
+	{ action => 'DROP', proto => 'icmpv6' },
         "-p tcp -j REJECT --reject-with tcp-reset",
         #"-p udp -j REJECT --reject-with icmp-port-unreachable",
         #"-p icmp -j REJECT --reject-with icmp-host-unreachable",
@@ -599,7 +627,7 @@ $pve_std_chains->{6} = {
         # 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'
+	{ action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth'
         # we are not interested in BROADCAST/MULTICAST/ANYCAST
         { action => 'PVEFW-DropBroadcast' },
         # ACCEPT critical ICMP types
@@ -610,15 +638,15 @@ $pve_std_chains->{6} = {
         # Drop packets with INVALID state
         "-m conntrack --ctstate INVALID -j DROP",
         # Drop Microsoft SMB noise
-        { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
-        { action => 'DROP', proto => 'udp', dport => '137:139'},
-        { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
-        { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
-        { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
+	{ action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 },
+	{ action => 'DROP', proto => 'udp', dport => '137:139'},
+	{ action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 },
+	{ action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 },
+	{ action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP
         # Drop new/NotSyn traffic so that it doesn't get logged
         "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP",
         # Drop DNS replies
-        { action => 'DROP', proto => 'udp', sport => 53 },
+	{ action => 'DROP', proto => 'udp', sport => 53 },
     ],
     'PVEFW-Reject' => [
         # same as shorewall 'Reject', which is equal to Reject,
@@ -654,15 +682,6 @@ $pve_std_chains->{6} = {
         "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags",
         "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags",
     ],
-    'PVEFW-smurfs' => [
-        #does smurf attack works with ipv6, as broadcast not exist ???
-
-        # same as shorewall smurfs action
-        # Filter packets for smurfs (packets with a broadcast address as the source).
-        #"-s 0.0.0.0/32 -j RETURN",
-        #"-m addrtype --src-type BROADCAST -g PVEFW-smurflog",
-        #"-s 224.0.0.0/4 -g PVEFW-smurflog",
-    ],
 };
 
 # iptables -p icmp -h
@@ -727,7 +746,9 @@ my $icmpv6_type_names = {
     'echo-reply' => 1,
     'router-solicitation' => 1,
     'router-advertisement' => 1,
+    'neighbor-solicitation' => 1,
     'neighbour-solicitation' => 1,
+    'neighbor-advertisement' => 1,
     'neighbour-advertisement' => 1,
     'redirect' => 1,
 };
@@ -736,14 +757,32 @@ sub init_firewall_macros {
 
     $pve_fw_parsed_macros = {};
 
-    foreach my $k (keys %$pve_fw_macros) {
+    my $parse = sub {
+	my ($k, $macro) = @_;
 	my $lc_name = lc($k);
-	my $macro = $pve_fw_macros->{$k};
-	if (!ref($macro->[0])) {
-	    $pve_fw_macro_descr->{$k} = shift @$macro;
+	$pve_fw_macro_ipversion->{$k} = 0;
+	while (!ref($macro->[0])) {
+	    my $desc = shift @$macro;
+	    if ($desc eq 'ipv4only') {
+		$pve_fw_macro_ipversion->{$k} = 4;
+	    } elsif ($desc eq 'ipv6only') {
+		$pve_fw_macro_ipversion->{$k} = 6;
+	    } else {
+		$pve_fw_macro_descr->{$k} = $desc;
+	    }
 	}
 	$pve_fw_preferred_macro_names->{$lc_name} = $k;
 	$pve_fw_parsed_macros->{$k} = $macro;
+    };
+
+    foreach my $k (keys %$pve_fw_macros) {
+	&$parse($k, $pve_fw_macros->{$k});
+    }
+
+    foreach my $k (keys %$pve_ipv6fw_macros) {
+	next if $pve_fw_parsed_macros->{$k};
+	&$parse($k, $pve_ipv6fw_macros->{$k});
+	$pve_fw_macro_ipversion->{$k} = 6;
     }
 }
 
@@ -884,16 +923,16 @@ sub local_network {
 # and we use '_swap' suffix for atomic update, 
 # for example PVEFW-${VMID}-${ipset_name}_swap
 
-my $max_iptables_ipset_name_length = 31 - length("_swap") - length("-v4");
+my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap");
 
 sub compute_ipset_chain_name {
-    my ($vmid, $ipset_name) = @_;
+    my ($vmid, $ipset_name, $ipversion) = @_;
 
     $vmid = 0 if !defined($vmid);
 
-    my $id = "$vmid-${ipset_name}";
+    my $id = "$vmid-${ipset_name}-v$ipversion";
 
-    if ((length($id) + 6) > $max_iptables_ipset_name_length) {
+    if (length($id) > $max_iptables_ipset_name_length) {
 	$id = PVE::Tools::fnv31a_hex($id);
     }
 
@@ -946,7 +985,7 @@ sub parse_address_list {
 }
 
 sub parse_port_name_number_or_range {
-    my ($str) = @_;
+    my ($str, $dport) = @_;
 
     my $services = PVE::Firewall::get_etc_services();
     my $count = 0;
@@ -962,9 +1001,9 @@ sub parse_port_name_number_or_range {
 	    my $port = $1;
 	    die "invalid port '$port'\n" if $port > 65535;
 	} else {
-	    if ($icmp_type_names->{$item}) {
+	    if ($dport && $icmp_type_names->{$item}) {
 		$icmp_port = 1;
-	    } elsif ($icmpv6_type_names->{$item}) {
+	    } elsif ($dport && $icmpv6_type_names->{$item}) {
 		$icmp_port = 1;
 	    } else {
 		die "invalid port '$item'\n" if !$services->{byname}->{$item};
@@ -977,11 +1016,20 @@ sub parse_port_name_number_or_range {
     return $count;
 }
 
-PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec);
-sub pve_fw_verify_port_spec {
+PVE::JSONSchema::register_format('pve-fw-sport-spec', \&pve_fw_verify_sport_spec);
+sub pve_fw_verify_sport_spec {
    my ($portstr) = @_;
 
-   parse_port_name_number_or_range($portstr);
+   parse_port_name_number_or_range($portstr, 0);
+
+   return $portstr;
+}
+
+PVE::JSONSchema::register_format('pve-fw-dport-spec', \&pve_fw_verify_dport_spec);
+sub pve_fw_verify_dport_spec {
+   my ($portstr) = @_;
+
+   parse_port_name_number_or_range($portstr, 1);
 
    return $portstr;
 }
@@ -1044,7 +1092,10 @@ sub copy_list_with_digest {
 	    next if !defined($v);
 	    $data->{$k} = $v;
 	    # Note: digest ignores refs ($rule->{errors})
-	    $sha->add($k, ':', $v, "\n") if !ref($v); ;
+	    # since Digest::SHA expects a series of bytes,
+	    #  we have to encode the value here to prevent errors when
+	    #  using utf8 characters (eg. in comments)
+	    $sha->add($k, ':', encode_utf8($v), "\n") if !ref($v); ;
 	}
 	push @$res, $data;
     }
@@ -1102,11 +1153,11 @@ my $rule_properties = {
 	optional => 1,
     },
     sport => {
-	type => 'string', format => 'pve-fw-port-spec',
+	type => 'string', format => 'pve-fw-sport-spec',
 	optional => 1,
     },
     dport => {
-	type => 'string', format => 'pve-fw-port-spec',
+	type => 'string', format => 'pve-fw-dport-spec',
 	optional => 1,
     },
     comment => {
@@ -1142,11 +1193,20 @@ sub delete_rule_properties {
 }
 
 my $apply_macro = sub {
-    my ($macro_name, $param, $verify) = @_;
+    my ($macro_name, $param, $verify, $ipversion) = @_;
 
     my $macro_rules = $pve_fw_parsed_macros->{$macro_name};
     die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen
 
+    if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) {
+	$macro_rules = $pve_ipv6fw_macros->{$macro_name};
+    }
+
+    # skip macros which are specific to another ipversion
+    if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) {
+	return if $ipversion != $required;
+    }
+
     my $rules = [];
 
     foreach my $templ (@$macro_rules) {
@@ -1220,6 +1280,16 @@ sub verify_rule {
 	$errors->{$param} = $msg if !$errors->{$param};
     };
 
+    my $ipversion;
+    my $set_ip_version = sub {
+	my $vers = shift;
+	if ($vers) {
+	    die "detected mixed ipv4/ipv6 adresses in rule\n"
+		if $ipversion && ($vers != $ipversion);
+	    $ipversion = $vers;
+	}
+    };
+
     my $check_ipset_or_alias_property = sub {
 	my ($name, $expected_ipversion) = @_;
 
@@ -1236,12 +1306,10 @@ sub verify_rule {
 		my $alias = lc($value);
 		&$add_error($name, "no such alias '$value'")
 		    if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias}));
-
-		my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
+		my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
 		$e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
 
-		die "detected mixed ipv4/ipv6 adresses in rule\n"
-		    if $expected_ipversion && ($expected_ipversion != $e->{ipversion});
+		&$set_ip_version($e->{ipversion});
 	    }
 	}
     };
@@ -1288,16 +1356,6 @@ sub verify_rule {
 	}
     }
 
-    my $ipversion;
-    my $set_ip_version = sub {
-	my $vers = shift;
-	if ($vers) {
-	    die "detected mixed ipv4/ipv6 adresses in rule\n"
-		if $ipversion && ($vers != $ipversion);
-	    $ipversion = $vers;
-	}
-    };
-
     if ($rule->{proto}) {
 	eval { pve_fw_verify_protocol_spec($rule->{proto}); };
 	&$add_error('proto', $@) if $@;
@@ -1306,14 +1364,14 @@ sub verify_rule {
     }
 
     if ($rule->{dport}) {
-	eval { parse_port_name_number_or_range($rule->{dport}); };
+	eval { parse_port_name_number_or_range($rule->{dport}, 1); };
 	&$add_error('dport', $@) if $@;
 	&$add_error('proto', "missing property - 'dport' requires this property")
 	    if !$rule->{proto};
     }
 
     if ($rule->{sport}) {
-	eval { parse_port_name_number_or_range($rule->{sport}); };
+	eval { parse_port_name_number_or_range($rule->{sport}, 0); };
 	&$add_error('sport', $@) if $@;
 	&$add_error('proto', "missing property - 'sport' requires this property")
 	    if !$rule->{proto};
@@ -1337,8 +1395,10 @@ sub verify_rule {
 	&$check_ipset_or_alias_property('dest', $ipversion);
     }
 
+    $rule->{ipversion} = $ipversion if $ipversion;
+
     if ($rule->{macro} && !$error_count) {
-	eval { &$apply_macro($rule->{macro}, $rule, 1); };
+	eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); };
 	if (my $err = $@) {
 	    if (ref($err) eq "PVE::Exception" && $err->{errors}) {
 		my $eh = $err->{errors};
@@ -1352,7 +1412,6 @@ sub verify_rule {
     }
 
     $rule->{errors} = $errors if $error_count;
-    $rule->{ipversion} = $ipversion if $ipversion;
 
     return $rule;
 }
@@ -1434,19 +1493,19 @@ my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n";
 sub iptables_restore_cmdlist {
     my ($cmdlist) = @_;
 
-    run_command("/sbin/iptables-restore -n", input => $cmdlist);
+    run_command("/sbin/iptables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
 }
 
 sub ip6tables_restore_cmdlist {
     my ($cmdlist) = @_;
 
-    run_command("/sbin/ip6tables-restore -n", input => $cmdlist);
+    run_command("/sbin/ip6tables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist");
 }
 
 sub ipset_restore_cmdlist {
     my ($cmdlist) = @_;
 
-    run_command("/usr/sbin/ipset restore", input => $cmdlist);
+    run_command("/usr/sbin/ipset restore", input => $cmdlist, errmsg => "ipset_restore_cmdlist");
 }
 
 sub iptables_get_chains {
@@ -1562,15 +1621,15 @@ sub ipset_get_chains {
 }
 
 sub ruleset_generate_cmdstr {
-    my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
+    my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
 
     return if defined($rule->{enable}) && !$rule->{enable};
     return if $rule->{errors};
 
     die "unable to emit macro - internal error" if $rule->{macro}; # should not happen
 
-    my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0;
-    my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0;
+    my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}, 1) : 0;
+    my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}, 0) : 0;
 
     my @cmd = ();
 
@@ -1585,10 +1644,10 @@ sub ruleset_generate_cmdstr {
 	    if ($source =~ m/^\+(${ipset_name_pattern})$/) {
 		my $name = $1;
 		if ($fw_conf && $fw_conf->{ipset}->{$name}) {
-		    my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
+		    my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
 		    push @cmd, "-m set --match-set ${ipset_chain} src";
 		} elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
-		    my $ipset_chain = compute_ipset_chain_name(0, $name);
+		    my $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
 		    push @cmd, "-m set --match-set ${ipset_chain} src";
 		} else {
 		    die "no such ipset '$name'\n";
@@ -1598,7 +1657,7 @@ sub ruleset_generate_cmdstr {
 	    }
 	} elsif ($source =~ m/^${ip_alias_pattern}$/){
 	    my $alias = lc($source);
-	    my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
+	    my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
 	    $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
 	    die "no such alias '$source'\n" if !$e;
 	    push @cmd, "-s $e->{cidr}";
@@ -1614,10 +1673,10 @@ sub ruleset_generate_cmdstr {
 	    if ($dest =~ m/^\+(${ipset_name_pattern})$/) {
 		my $name = $1;
 		if ($fw_conf && $fw_conf->{ipset}->{$name}) {
-		    my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name);
+		    my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion);
 		    push @cmd, "-m set --match-set ${ipset_chain} dst";
 		} elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) {
-		    my $ipset_chain = compute_ipset_chain_name(0, $name);
+		    my $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion);
 		    push @cmd, "-m set --match-set ${ipset_chain} dst";
 		} else {
 		    die "no such ipset '$name'\n";
@@ -1627,7 +1686,7 @@ sub ruleset_generate_cmdstr {
 	    }
 	} elsif ($dest =~ m/^${ip_alias_pattern}$/){
 	    my $alias = lc($dest);
-	    my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
+	    my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
 	    $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf;
 	    die "no such alias '$dest'\n" if !$e;
 	    push @cmd, "-d $e->{cidr}";
@@ -1653,11 +1712,13 @@ sub ruleset_generate_cmdstr {
 	if ($rule->{dport}) {
 	    if ($rule->{proto} && $rule->{proto} eq 'icmp') {
 		# Note: we use dport to store --icmp-type
-		die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}});
+		die "unknown icmp-type '$rule->{dport}'\n"
+		    if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}});
 		push @cmd, "-m icmp --icmp-type $rule->{dport}";
 	    } elsif ($rule->{proto} && $rule->{proto} eq 'icmpv6') {
 		# Note: we use dport to store --icmpv6-type
-		die "unknown icmpv6-type '$rule->{dport}'\n" if !defined($icmpv6_type_names->{$rule->{dport}});
+		die "unknown icmpv6-type '$rule->{dport}'\n"
+		    if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}});
 		push @cmd, "-m icmpv6 --icmpv6-type $rule->{dport}";
 	    } else {
 		if ($nbdport > 1) {
@@ -1696,12 +1757,12 @@ sub ruleset_generate_cmdstr {
 }
 
 sub ruleset_generate_rule {
-    my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
+    my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_;
 
     my $rules;
 
     if ($rule->{macro}) {
-	$rules = &$apply_macro($rule->{macro}, $rule);
+	$rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion);
     } else {
 	$rules = [ $rule ];
     }
@@ -1710,7 +1771,7 @@ sub ruleset_generate_rule {
 
     my @cmds = ();
     foreach my $tmp (@$rules) {
-	if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
+	if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $ipversion, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) {
 	    push @cmds, $cmdstr;
 	}
     }
@@ -1721,11 +1782,11 @@ sub ruleset_generate_rule {
 }
 
 sub ruleset_generate_rule_insert {
-    my ($ruleset, $chain, $rule, $actions, $goto) = @_;
+    my ($ruleset, $chain, $ipversion, $rule, $actions, $goto) = @_;
 
     die "implement me" if $rule->{macro}; # not implemented, because not needed so far
 
-    if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) {
+    if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $ipversion, $rule, $actions, $goto)) {
 	ruleset_insertrule($ruleset, $chain, $cmdstr);
     }
 }
@@ -1789,11 +1850,11 @@ sub ruleset_addlog {
 }
 
 sub ruleset_add_chain_policy {
-    my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_;
+    my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_;
 
     if ($policy eq 'ACCEPT') {
 
-	ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' },
+	ruleset_generate_rule($ruleset, $chain, $ipversion, { action => 'ACCEPT' },
 			      { ACCEPT =>  $accept_action});
 
     } elsif ($policy eq 'DROP') {
@@ -1815,6 +1876,18 @@ sub ruleset_add_chain_policy {
     }
 }
 
+sub ruleset_chain_add_ndp {
+    my ($ruleset, $chain, $ipversion, $options, $direction, $accept) = @_;
+    return if $ipversion != 6 || (defined($options->{ndp}) && !$options->{ndp});
+
+    ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-solicitation $accept");
+    if ($direction ne 'OUT' || $options->{radv}) {
+	ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type router-advertisement $accept");
+    }
+    ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-solicitation $accept");
+    ruleset_addrule($ruleset, $chain, "-p icmpv6 --icmpv6-type neighbor-advertisement $accept");
+}
+
 sub ruleset_chain_add_conn_filters {
     my ($ruleset, $chain, $accept) = @_;
 
@@ -1823,7 +1896,7 @@ sub ruleset_chain_add_conn_filters {
 }
 
 sub ruleset_chain_add_input_filters {
-    my ($ruleset, $chain, $options, $cluster_conf, $loglevel) = @_;
+    my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_;
 
     if ($cluster_conf->{ipset}->{blacklist}){
 	if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) {
@@ -1831,12 +1904,14 @@ sub ruleset_chain_add_input_filters {
 	    ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel;
 	    ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP");
 	}
-	my $ipset_chain = compute_ipset_chain_name(0, 'blacklist');
+	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->{nosmurfs}) && $options->{nosmurfs} == 0)) {
-	ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
+	if ($ipversion == 4) {
+	    ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs");
+	}
     }
 
     if ($options->{tcpflags}) {
@@ -1845,18 +1920,20 @@ sub ruleset_chain_add_input_filters {
 }
 
 sub ruleset_create_vm_chain {
-    my ($ruleset, $chain, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
+    my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
 
     ruleset_create_chain($ruleset, $chain);
     my $accept = generate_nfqueue($options);
 
     if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
 	if ($direction eq 'OUT') {
-	    ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK',
-						      proto => 'udp', sport => 68, dport => 67 });
+	    ruleset_generate_rule($ruleset, $chain, $ipversion, 
+				  { action => 'PVEFW-SET-ACCEPT-MARK',
+				    proto => 'udp', sport => 68, dport => 67 });
 	} else {
-	    ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT',
-						      proto => 'udp', sport => 67, dport => 68 });
+	    ruleset_generate_rule($ruleset, $chain, $ipversion,
+				  { action => 'ACCEPT',
+				    proto => 'udp', sport => 67, dport => 68 });
 	}
     }
 
@@ -1864,11 +1941,17 @@ sub ruleset_create_vm_chain {
 	if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
 	    ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
 	}
+	if ($ipversion == 6 && !$options->{radv}) {
+	    ruleset_addrule($ruleset, $chain, '-p icmpv6 --icmpv6-type router-advertisement -j DROP');
+	}
 	if ($ipfilter_ipset) {
 	    ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src -j DROP");
 	}
 	ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark
     }
+
+    my $accept_action = $direction eq 'OUT' ? '-g PVEFW-SET-ACCEPT-MARK' : "-j $accept";
+    ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, $direction, $accept_action);
 }
 
 sub ruleset_add_group_rule {
@@ -1910,11 +1993,11 @@ sub ruleset_generate_vm_rules {
 	    next if $rule->{type} ne $lc_direction;
 	    eval {
 		if ($direction eq 'OUT') {
-		    ruleset_generate_rule($ruleset, $chain, $rule,
+		    ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
 					  { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" },
 					  undef, $cluster_conf, $vmfw_conf);
 		} else {
-		    ruleset_generate_rule($ruleset, $chain, $rule,
+		    ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
 					  { ACCEPT => $in_accept , REJECT => "PVEFW-reject" },
 					  undef, $cluster_conf, $vmfw_conf);
 		}
@@ -1969,7 +2052,7 @@ sub generate_venet_rules_direction {
 
     my $chain = "venet0-$vmid-$direction";
 
-    ruleset_create_vm_chain($ruleset, $chain, $options, undef, undef, $direction);
+    ruleset_create_vm_chain($ruleset, $chain, $ipversion, $options, undef, undef, $direction);
 
     ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, 'venet', $direction, undef, $ipversion);
 
@@ -1984,15 +2067,15 @@ sub generate_venet_rules_direction {
 
     my $accept = generate_nfqueue($options);
     my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
-    ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action);
+    ruleset_add_chain_policy($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
 
     if ($direction eq 'OUT') {
-	ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", {
+	ruleset_generate_rule_insert($ruleset, "PVEFW-VENET-OUT", $ipversion, {
 	    action => $chain,
 	    source => $ip,
 	    iface_in => 'venet0'});
     } else {
-	ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", {
+	ruleset_generate_rule($ruleset, "PVEFW-VENET-IN", $ipversion, {
 	    action => $chain,
 	    dest => $ip,
 	    iface_out => 'venet0'});
@@ -2012,11 +2095,11 @@ sub generate_tap_rules_direction {
     my $tapchain = "$iface-$direction";
 
     my $ipfilter_name = compute_ipfilter_ipset_name($netid);
-    my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name)
+    my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion)
 	if $vmfw_conf->{ipset}->{$ipfilter_name};	
 
     # create chain with mac and ip filter
-    ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $ipfilter_ipset, $direction);
+    ruleset_create_vm_chain($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);
@@ -2034,10 +2117,10 @@ sub generate_tap_rules_direction {
 
 	my $accept = generate_nfqueue($options);
 	my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept;
-	ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action);
+	ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action);
     } else {
 	my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
-	ruleset_add_chain_policy($ruleset, $tapchain, $vmid, 'ACCEPT', $loglevel, $accept_action);
+	ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action);
     }
 
     # plug the tap chain to bridge chain
@@ -2067,7 +2150,8 @@ sub enable_host_firewall {
     ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
 
     ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT');
-    ruleset_chain_add_input_filters($ruleset, $chain, $options, $cluster_conf, $loglevel);
+    ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'IN', '-j RETURN');
+    ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel);
 
     # we use RETURN because we need to check also tap rules
     my $accept_action = 'RETURN';
@@ -2077,6 +2161,7 @@ sub enable_host_firewall {
     # add host rules first, so that cluster wide rules can be overwritten
     foreach my $rule (@$rules, @$cluster_rules) {
 	next if !$rule->{enable} || $rule->{errors};
+	next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
 
 	$rule->{iface_in} = $rule->{iface} if $rule->{iface};
 
@@ -2084,7 +2169,8 @@ sub enable_host_firewall {
 	    if ($rule->{type} eq 'group') {
 		ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion);
 	    } elsif ($rule->{type} eq 'in') {
-		ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
+		ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 
+				      { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
 				      undef, $cluster_conf, $hostfw_conf);
 	    }
 	};
@@ -2093,17 +2179,18 @@ sub enable_host_firewall {
     }
 
     # allow standard traffic for management ipset (includes cluster network)
-    my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management");
+    my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion);
     my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src";
     ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action");  # PVE API
     ruleset_addrule($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
 
-    my $localnet = local_network();
+    my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
+    my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion};
 
     # corosync
-    if ($localnet) {
+    if ($localnet && ($ipversion == $localnet_ver)) {
 	my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action";
 	ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule");
 	ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule");
@@ -2111,7 +2198,7 @@ sub enable_host_firewall {
 
     # implement input policy
     my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default
-    ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
+    ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
 
     # host outbound firewall
     $chain = "PVEFW-HOST-OUT";
@@ -2125,19 +2212,22 @@ sub enable_host_firewall {
 
     # we use RETURN because we may want to check other thigs later
     $accept_action = 'RETURN';
+    ruleset_chain_add_ndp($ruleset, $chain, $ipversion, $options, 'OUT', "-j $accept_action");
 
     ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast
 
     # add host rules first, so that cluster wide rules can be overwritten
     foreach my $rule (@$rules, @$cluster_rules) {
 	next if !$rule->{enable} || $rule->{errors};
+	next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion);
 
 	$rule->{iface_out} = $rule->{iface} if $rule->{iface};
 	eval {
 	    if ($rule->{type} eq 'group') {
 		ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion);
 	    } elsif ($rule->{type} eq 'out') {
-		ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
+		ruleset_generate_rule($ruleset, $chain, $ipversion, 
+				      $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" },
 				      undef, $cluster_conf, $hostfw_conf);
 	    }
 	};
@@ -2146,7 +2236,7 @@ sub enable_host_firewall {
     }
 
     # allow standard traffic on cluster network
-    if ($localnet) {
+    if ($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
@@ -2159,7 +2249,7 @@ sub enable_host_firewall {
 
     # implement output policy
     $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default
-    ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action);
+    ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action);
 
     ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT");
     ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN");
@@ -2183,7 +2273,9 @@ sub generate_group_rules {
     foreach my $rule (@$rules) {
 	next if $rule->{type} ne 'in';
 	next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
-	ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf);
+	ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, 
+			      { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, 
+			      undef, $cluster_conf);
     }
 
     $chain = "GROUP-${group}-OUT";
@@ -2196,8 +2288,9 @@ sub generate_group_rules {
 	next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion;
 	# we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to
 	# check also other tap rules later
-	ruleset_generate_rule($ruleset, $chain, $rule,
-			      { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf);
+	ruleset_generate_rule($ruleset, $chain, $ipversion, $rule,
+			      { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, 
+			      undef, $cluster_conf);
     }
 }
 
@@ -2290,7 +2383,7 @@ sub parse_vmfw_option {
 
     my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
 
-    if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) {
+    if ($line =~ m/^(enable|dhcp|ndp|radv|macfilter|ips):\s*(0|1)\s*$/i) {
 	$opt = lc($1);
 	$value = int($2);
     } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) {
@@ -2316,7 +2409,7 @@ sub parse_hostfw_option {
 
     my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog";
 
-    if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) {
+    if ($line =~ m/^(enable|nosmurfs|tcpflags|ndp):\s*(0|1)\s*$/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) {
@@ -2354,7 +2447,7 @@ sub resolve_alias {
     my ($clusterfw_conf, $fw_conf, $cidr) = @_;
 
     my $alias = lc($cidr);
-    my $e = $fw_conf->{aliases}->{$alias} if $fw_conf;
+    my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef;
     $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf;
 
     die "no such alias '$cidr'\n" if !$e;;
@@ -2864,7 +2957,7 @@ sub generate_std_chains {
 	ruleset_create_chain($ruleset, $chain);
 	foreach my $rule (@{$std_chains->{$chain}}) {
 	    if (ref($rule)) {
-		ruleset_generate_rule($ruleset, $chain, $rule);
+		ruleset_generate_rule($ruleset, $chain, $ipversion, $rule);
 	    } else {
 		ruleset_addrule($ruleset, $chain, $rule);
 	    }
@@ -2873,77 +2966,68 @@ sub generate_std_chains {
 }
 
 sub generate_ipset_chains {
-    my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_;
+    my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_; #fixme
 
     foreach my $ipset (keys %{$fw_conf->{ipset}}) {
-	my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $ipset);
-	generate_ipset($ipset_ruleset, $ipset_chain, $fw_conf->{ipset}->{$ipset}, $clusterfw_conf, $fw_conf);
-    }
-}
 
-sub generate_ipset {
-    my ($ipset_ruleset, $name, $options, $clusterfw_conf, $fw_conf) = @_;
+	my $options = $fw_conf->{ipset}->{$ipset};
 
-    die "duplicate ipset chain '$name'\n" if defined($ipset_ruleset->{$name});
+	# remove duplicates
+	my $nethash = {};
+	foreach my $entry (@$options) {
+	    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, $entry->{cidr});
+		} else {
+		    ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr});
+		}
+		#http://backreference.org/2013/03/01/ipv6-address-normalization/
+		if ($ver == 6) {
+		    my $ipv6 = inet_pton(AF_INET6, lc($cidr));
+		    $cidr = inet_ntop(AF_INET6, $ipv6);
+		    $cidr =~ s|/128$||;
+		} else {
+		    $cidr =~ s|/32$||;
+		}
 
-    $ipset_ruleset->{$name} = ["create $name list:set size 4"];
+		$nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
+	    };
+	    warn $@ if $@;
+	}
 
-    # remove duplicates
-    my $nethash = {};
-    foreach my $entry (@$options) {
-	next if $entry->{errors}; # skip entries with errors
-	eval {
-	    my ($cidr, $ipversion);
-	    if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) {
-		($cidr, $ipversion) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr});
-            } else {
-		($cidr, $ipversion) = parse_ip_or_cidr($entry->{cidr});
-	    }
-	    #http://backreference.org/2013/03/01/ipv6-address-normalization/
-	    if ($ipversion == 6) {
-		my $ipv6 = inet_pton(AF_INET6, lc($cidr));
-		$cidr = inet_ntop(AF_INET6, $ipv6);
-		$cidr =~ s|/128$||;
-	    } else {
-		$cidr =~ s|/32$||;
-	    }
+	foreach my $ipversion (4, 6) {
+	    my $data = $nethash->{$ipversion};
 
-	    $nethash->{$ipversion}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} };
-	};
-	warn $@ if $@;
-    }
-
-    foreach my $ipversion (sort keys %$nethash) {
-	my $data = $nethash->{$ipversion};
-	my $subname = "$name-v$ipversion";
+	    my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion);
 
-	my $hashsize = scalar(@$options);
-	if ($hashsize <= 64) {
-	    $hashsize = 64;
-	} else {
-	    $hashsize = round_powerof2($hashsize);
-	}
+	    my $hashsize = scalar(@$options);
+	    if ($hashsize <= 64) {
+		$hashsize = 64;
+	    } else {
+		$hashsize = round_powerof2($hashsize);
+	    }
 
-	my $family = $ipversion == "6" ? "inet6" : "inet";
+	    my $family = $ipversion == "6" ? "inet6" : "inet";
 
-	$ipset_ruleset->{$subname} = ["create $subname hash:net family $family hashsize $hashsize maxelem $hashsize"];
+	    $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"];
 
-	foreach my $cidr (sort keys %$data) {
-	    my $entry = $data->{$cidr};
+	    foreach my $cidr (sort keys %$data) {
+		my $entry = $data->{$cidr};
 
-	    my $cmd = "add $subname $cidr";
-	    if ($entry->{nomatch}) {
-		if ($feature_ipset_nomatch) {
-		    push @{$ipset_ruleset->{$subname}}, "$cmd nomatch";
+		my $cmd = "add $name $cidr";
+		if ($entry->{nomatch}) {
+		    if ($feature_ipset_nomatch) {
+			push @{$ipset_ruleset->{$name}}, "$cmd nomatch";
+		    } else {
+			warn "ignore !$cidr - nomatch not supported by kernel\n";
+		    }
 		} else {
-		    warn "ignore !$cidr - nomatch not supported by kernel\n";
+		    push @{$ipset_ruleset->{$name}}, $cmd;
 		}
-	    } else {
-		push @{$ipset_ruleset->{$subname}}, $cmd;
 	    }
 	}
-
-	push @{$ipset_ruleset->{$name}}, "add $name $subname";
     }
 }
 
@@ -3070,14 +3154,17 @@ sub compile_iptables_filter {
     my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
 
     $cluster_conf->{ipset}->{venet0} = [];
-    my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0');
+    my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0', $ipversion);
 
     my $localnet;
     if ($cluster_conf->{aliases}->{local_network}) {
 	$localnet = $cluster_conf->{aliases}->{local_network}->{cidr};
     } else {
-	$localnet = local_network() || '127.0.0.0/8';
-	$cluster_conf->{aliases}->{local_network} = { cidr => $localnet };
+	my $localnet_ver;
+	($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8');
+
+	$cluster_conf->{aliases}->{local_network} = { 
+	    name => 'local_network', cidr => $localnet, ipversion => $localnet_ver };
     }
 
     push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet };
@@ -3104,7 +3191,7 @@ sub compile_iptables_filter {
     ruleset_addrule($ruleset, "PVEFW-INPUT", "-i venet0 -m set --match-set ${venet0_ipset_chain} src -j PVEFW-VENET-OUT");
 
     ruleset_create_chain($ruleset, "PVEFW-FWBR-IN");
-    ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $hostfw_options, $cluster_conf, $loglevel);
+    ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
 
     ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN");
 
@@ -3112,7 +3199,7 @@ sub compile_iptables_filter {
     ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT");
 
     ruleset_create_chain($ruleset, "PVEFW-VENET-IN");
-    ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $hostfw_options, $cluster_conf, $loglevel);
+    ruleset_chain_add_input_filters($ruleset, "PVEFW-VENET-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel);
 
     ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
 
@@ -3122,8 +3209,7 @@ sub compile_iptables_filter {
 
     my $ipset_ruleset = {};
 
-    # currently pveproxy don't works with ipv6, so let's generate host fw ipv4 only for the moment
-    if ($hostfw_enable && ($ipversion == 4)) {
+    if ($hostfw_enable) {
 	eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); };
 	warn $@ if $@; # just to be sure - should not happen
     }
@@ -3337,7 +3423,7 @@ sub get_ipset_cmdlist {
 	}
     }
 
-    foreach my $chain (sort keys %$ruleset) {
+    foreach my $chain (keys %$ruleset) {
 	my $stat = $statushash->{$chain};
 	die "internal error" if !$stat;
 
@@ -3348,7 +3434,7 @@ sub get_ipset_cmdlist {
 	}
     }
 
-    foreach my $chain (sort keys %$ruleset) {
+    foreach my $chain (keys %$ruleset) {
 	my $stat = $statushash->{$chain};
 	die "internal error" if !$stat;
 
@@ -3365,7 +3451,8 @@ sub get_ipset_cmdlist {
 	}
     }
 
-    foreach my $chain (sort keys %$statushash) {
+     # the remove unused chains
+    foreach my $chain (keys %$statushash) {
 	next if $statushash->{$chain}->{action} ne 'delete';
 
 	$delete_cmdlist .= "flush $chain\n";
@@ -3406,11 +3493,24 @@ sub apply_ruleset {
 	}
     }
 
+    my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1";
+    PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || '');
+
     ipset_restore_cmdlist($ipset_create_cmdlist);
 
+    $tmpfile = "$pve_fw_status_dir/ip4cmdlist";
+    PVE::Tools::file_set_contents($tmpfile, $cmdlist || '');
+
     iptables_restore_cmdlist($cmdlist);
+
+    $tmpfile = "$pve_fw_status_dir/ip6cmdlist";
+    PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || '');
+
     ip6tables_restore_cmdlist($cmdlistv6);
 
+    $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2";
+    PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || '');
+
     ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist;
 
     # test: re-read status and check if everything is up to date
@@ -3481,7 +3581,16 @@ sub update_nf_conntrack_tcp_timeout_established {
 
 sub remove_pvefw_chains {
 
-    my ($chash, $hooks) = iptables_get_chains();
+    PVE::Firewall::remove_pvefw_chains_iptables("iptables");
+    PVE::Firewall::remove_pvefw_chains_iptables("ip6tables");
+    PVE::Firewall::remove_pvefw_chains_ipset();
+
+}
+
+sub remove_pvefw_chains_iptables {
+    my ($iptablescmd) = @_;
+
+    my ($chash, $hooks) = iptables_get_chains($iptablescmd);
     my $cmdlist = "*filter\n";
 
     foreach my $h (qw(INPUT OUTPUT FORWARD)) {
@@ -3499,18 +3608,25 @@ sub remove_pvefw_chains {
     }
     $cmdlist .= "COMMIT\n";
 
-    iptables_restore_cmdlist($cmdlist);
+    if($iptablescmd eq "ip6tables") {
+	ip6tables_restore_cmdlist($cmdlist);
+    } else {
+	iptables_restore_cmdlist($cmdlist);
+    }
+}
+
+sub remove_pvefw_chains_ipset {
 
     my $ipset_chains = ipset_get_chains();
 
-    $cmdlist = "";
+    my $cmdlist = "";
  
     foreach my $chain (keys %$ipset_chains) {
-       $cmdlist .= "flush $chain\n";
-       $cmdlist .= "destroy $chain\n";
+	$cmdlist .= "flush $chain\n";
+	$cmdlist .= "destroy $chain\n";
     }
 
-    ipset_restore_cmdlist($cmdlist) if $cmdlist; 
+    ipset_restore_cmdlist($cmdlist) if $cmdlist;
 }
 
 sub init {
@@ -3534,7 +3650,7 @@ sub update {
 	    return;
 	}
 
-	my $hostfw_conf = load_hostfw_conf();
+	my $hostfw_conf = load_hostfw_conf($cluster_conf);
 
 	my ($ruleset, $ipset_ruleset, $rulesetv6) = compile($cluster_conf, $hostfw_conf);