my $pve_fw_macro_descr;
my $pve_fw_preferred_macro_names = {};
-my $pve_std_chains = {
+my $pve_std_chains = {};
+$pve_std_chains->{4} = {
'PVEFW-SET-ACCEPT-MARK' => [
"-j MARK --set-mark 1",
],
return $__local_network;
}
-my $max_iptables_ipset_name_length = 27;
+# ipset names are limited to 31 characters, and we use '_swap'
+# suffix for atomic update, for example PVEFW-${VMID}-${ipset_name}_swap
+
+my $max_iptables_ipset_name_length = 31 - length("_swap");
sub compute_ipset_chain_name {
my ($vmid, $ipset_name) = @_;
return "PVEFW-$id";
}
+sub compute_ipfilter_ipset_name {
+ my ($iface) = @_;
+
+ return "ipfilter-$iface";
+}
+
sub parse_address_list {
my ($str) = @_;
my $count = 0;
my $iprange = 0;
+ my $ipversion = undef;
+
foreach my $elem (split(/,/, $str)) {
$count++;
if (!Net::IP->new($elem)) {
die "invalid IP address: $err\n";
}
$iprange = 1 if $elem =~ m/-/;
+ $ipversion = Net::IP::ip_get_version($elem); #fixme : don't work with range
}
die "you can use a range in a list\n" if $iprange && $count > 1;
+ return $ipversion;
}
sub parse_port_name_number_or_range {
return $portstr;
}
-PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec);
-sub pve_fw_verify_v4addr_spec {
+PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec);
+sub pve_fw_verify_addr_spec {
my ($list) = @_;
parse_address_list($list);
},
iface => get_standard_option('pve-iface', { optional => 1 }),
source => {
- type => 'string', format => 'pve-fw-v4addr-spec',
+ type => 'string', format => 'pve-fw-addr-spec',
optional => 1,
},
dest => {
- type => 'string', format => 'pve-fw-v4addr-spec',
+ type => 'string', format => 'pve-fw-addr-spec',
optional => 1,
},
proto => {
my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_;
my $allow_groups = $rule_env eq 'group' ? 0 : 1;
+ my $ipversion = undef;
my $allow_iface = $rule_env_iface_lookup->{$rule_env};
die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen
}
if ($rule->{source}) {
- eval { parse_address_list($rule->{source}); };
+ eval { $ipversion = parse_address_list($rule->{source}); };
&$add_error('source', $@) if $@;
&$check_ipset_or_alias_property('source');
}
if ($rule->{dest}) {
- eval { parse_address_list($rule->{dest}); };
+ eval { $ipversion = parse_address_list($rule->{dest}); };
&$add_error('dest', $@) if $@;
&$check_ipset_or_alias_property('dest');
}
}
$rule->{errors} = $errors if $error_count;
+ $rule->{ipversion} = $ipversion if $ipversion;
return $rule;
}
return $rule;
}
+sub rules_modify_permissions {
+ my ($rule_env) = @_;
+
+ if ($rule_env eq 'host') {
+ return {
+ check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]],
+ };
+ } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
+ return {
+ check => ['perm', '/', [ 'Sys.Modify' ]],
+ };
+ } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
+ return {
+ check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]],
+ }
+ }
+
+ return undef;
+}
+
+sub rules_audit_permissions {
+ my ($rule_env) = @_;
+
+ if ($rule_env eq 'host') {
+ return {
+ check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]],
+ };
+ } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') {
+ return {
+ check => ['perm', '/', [ 'Sys.Audit' ]],
+ };
+ } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') {
+ return {
+ check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]],
+ }
+ }
+
+ return undef;
+}
+
# core functions
my $bridge_firewall_enabled = 0;
}
sub ruleset_create_vm_chain {
- my ($ruleset, $chain, $options, $macaddr, $direction) = @_;
+ my ($ruleset, $chain, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
ruleset_create_chain($ruleset, $chain);
my $accept = generate_nfqueue($options);
if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) {
ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP");
}
+ if ($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 $chain = "venet0-$vmid-$direction";
- ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction);
+ ruleset_create_vm_chain($ruleset, $chain, $options, undef, undef, $direction);
ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, 'venet', $direction);
my $tapchain = "$iface-$direction";
- ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction);
+ my $ipfilter_name = compute_ipfilter_ipset_name($netid);
+ my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name)
+ if $vmfw_conf->{ipset}->{$ipfilter_name};
- ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options);
+ # create chain with mac and ip filter
+ ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $ipfilter_ipset, $direction);
- ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
+ if ($options->{enable}) {
+ ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options);
- # implement policy
- my $policy;
+ ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface);
- if ($direction eq 'OUT') {
- $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
- } else {
+ # implement policy
+ my $policy;
+
+ if ($direction eq 'OUT') {
+ $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default
+ } else {
$policy = $options->{policy_in} || 'DROP'; # allow nothing by default
- }
+ }
- 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);
+ 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);
+ } else {
+ my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT';
+ ruleset_add_chain_policy($ruleset, $tapchain, $vmid, 'ACCEPT', $loglevel, $accept_action);
+ }
# plug the tap chain to bridge chain
if ($direction eq 'IN') {
}
sub generate_std_chains {
- my ($ruleset, $options) = @_;
+ my ($ruleset, $options, $ipversion) = @_;
+
+ my $std_chains = $pve_std_chains->{$ipversion} || die "internal error";
my $loglevel = get_option_log_level($options, 'smurf_log_level');
- # same as shorewall smurflog.
- my $chain = 'PVEFW-smurflog';
- $pve_std_chains->{$chain} = [];
+ my $chain;
- push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
- push @{$pve_std_chains->{$chain}}, "-j DROP";
+ if ($ipversion == 4) {
+ # same as shorewall smurflog.
+ $chain = 'PVEFW-smurflog';
+ $std_chains->{$chain} = [];
+
+ push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
+ push @{$std_chains->{$chain}}, "-j DROP";
+ }
# same as shorewall logflags action.
$loglevel = get_option_log_level($options, 'tcp_flags_log_level');
$chain = 'PVEFW-logflags';
- $pve_std_chains->{$chain} = [];
+ $std_chains->{$chain} = [];
# fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG)
- push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
- push @{$pve_std_chains->{$chain}}, "-j DROP";
+ push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel;
+ push @{$std_chains->{$chain}}, "-j DROP";
- foreach my $chain (keys %$pve_std_chains) {
+ foreach my $chain (keys %$std_chains) {
ruleset_create_chain($ruleset, $chain);
- foreach my $rule (@{$pve_std_chains->{$chain}}) {
+ foreach my $rule (@{$std_chains->{$chain}}) {
if (ref($rule)) {
ruleset_generate_rule($ruleset, $chain, $rule);
} else {
$vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose);
}
+ my ($ruleset, $ipset_ruleset) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose);
+ return ($ruleset, $ipset_ruleset);
+}
+
+sub compile_iptables_filter {
+ my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_;
+
$cluster_conf->{ipset}->{venet0} = [];
my $venet0_ipset_chain = compute_ipset_chain_name(0, 'venet0');
ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o venet0 -m set --match-set ${venet0_ipset_chain} dst -j PVEFW-VENET-IN");
- generate_std_chains($ruleset, $hostfw_options);
+ generate_std_chains($ruleset, $hostfw_options, $ipversion);
my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0));
my $conf = $vmdata->{qemu}->{$vmid};
my $vmfw_conf = $vmfw_configs->{$vmid};
return if !$vmfw_conf;
- return if !$vmfw_conf->{options}->{enable};
generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
my $vmfw_conf = $vmfw_configs->{$vmid};
return if !$vmfw_conf;
- return if !$vmfw_conf->{options}->{enable};
generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf);
- if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
- my $ip = $conf->{ip_address}->{value};
- $ip =~ s/\s+/,/g;
- parse_address_list($ip); # make sure we have a valid $ip list
+ if ($vmfw_conf->{options}->{enable}) {
+ if ($conf->{ip_address} && $conf->{ip_address}->{value}) {
+ my $ip = $conf->{ip_address}->{value};
+ $ip =~ s/\s+/,/g;
+ parse_address_list($ip); # make sure we have a valid $ip list
- my @ips = split(',', $ip);
+ my @ips = split(',', $ip);
- foreach my $singleip (@ips) {
- my $venet0ipset = {};
- $venet0ipset->{cidr} = $singleip;
- push @{$cluster_conf->{ipset}->{venet0}}, $venet0ipset;
- }
+ foreach my $singleip (@ips) {
+ my $venet0ipset = {};
+ $venet0ipset->{cidr} = $singleip;
+ push @{$cluster_conf->{ipset}->{venet0}}, $venet0ipset;
+ }
- generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN');
- generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT');
+ generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN');
+ generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT');
+ }
}
if ($conf->{netif} && $conf->{netif}->{value}) {
my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value});
foreach my $netid (keys %$netif) {
my $d = $netif->{$netid};
-
+ my $bridge = $d->{bridge};
+ next if !$bridge || $bridge !~ m/^vmbr\d+(v(\d+))?f$/; # firewall enabled ?
my $macaddr = $d->{mac};
my $iface = $d->{host_ifname};
generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr,
projects / pve-firewall.git / blobdiff