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authorViacheslav Hletenko <v.gletenko@vyos.io>2022-05-17 21:30:50 +0000
committerViacheslav Hletenko <v.gletenko@vyos.io>2022-05-28 13:20:13 +0000
commite990b2f4c045f5d1be02915ec7d8869d5475ed4e (patch)
tree47d28c45e5cabe54ec9507e9bc44e894ab4b8b2d /src/conf_mode
parent9347dc53c5bd3d5712121524ea16f3030d735601 (diff)
downloadvyos-1x-e990b2f4c045f5d1be02915ec7d8869d5475ed4e.tar.gz
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firewall: T970: Add firewall group domain-group
Domain group allows to filter addresses by domain main Resolved addresses as elements are stored to named "nft set" that used in the nftables rules Also added a dynamic "resolver" systemd daemon vyos-domain-group-resolve.service which starts python script for the domain-group addresses resolving by timeout 300 sec set firewall group domain-group DOMAINS address 'example.com' set firewall group domain-group DOMAINS address 'example.org' set firewall name FOO rule 10 action 'drop' set firewall name FOO rule 10 source group domain-group 'DOMAINS' set interfaces ethernet eth0 firewall local name 'FOO' nft list table ip filter table ip filter { set DOMAINS { type ipv4_addr flags interval elements = { 192.0.2.1, 192.0.2.85, 203.0.113.55, 203.0.113.58 } } chain NAME_FOO { ip saddr @DOMAINS counter packets 0 bytes 0 drop comment "FOO-10" counter packets 0 bytes 0 return comment "FOO default-action accept" } }
Diffstat (limited to 'src/conf_mode')
-rwxr-xr-xsrc/conf_mode/firewall.py27
1 files changed, 26 insertions, 1 deletions
diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py
index 6924bf555..3c6aff386 100755
--- a/src/conf_mode/firewall.py
+++ b/src/conf_mode/firewall.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python3
#
-# Copyright (C) 2021 VyOS maintainers and contributors
+# Copyright (C) 2021-2022 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
@@ -26,7 +26,13 @@ from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.configdict import node_changed
from vyos.configdiff import get_config_diff, Diff
+from vyos.firewall import get_ips_domains_dict
+from vyos.firewall import nft_add_set_elements
+from vyos.firewall import nft_flush_set
+from vyos.firewall import nft_init_set
+from vyos.firewall import nft_update_set_elements
from vyos.template import render
+from vyos.util import call
from vyos.util import cmd
from vyos.util import dict_search_args
from vyos.util import process_named_running
@@ -408,6 +414,25 @@ def apply(firewall):
if install_result == 1:
raise ConfigError('Failed to apply firewall')
+ # set fireall group domain-group xxx
+ if 'group' in firewall:
+ if 'domain_group' in firewall['group']:
+ # T970 Enable a resolver (systemd daemon) that checks
+ # domain-group addresses and update entries for domains by timeout
+ # If router loaded without internet connection or for synchronization
+ call('systemctl restart vyos-domain-group-resolve.service')
+ for group, group_config in firewall['group']['domain_group'].items():
+ domains = []
+ for address in group_config['address']:
+ domains.append(address)
+ # Add elements to domain-group, try to resolve domain => ip
+ # and add elements to nft set
+ elements = get_ips_domains_dict(domains)
+ nft_init_set(group)
+ nft_add_set_elements(group, elements)
+ else:
+ call('systemctl stop vyos-domain-group-resolve.service')
+
if 'state_policy' in firewall and not state_policy_rule_exists():
for chain in ['VYOS_FW_FORWARD', 'VYOS_FW_OUTPUT', 'VYOS_FW_LOCAL']:
cmd(f'nft insert rule ip filter {chain} jump VYOS_STATE_POLICY')