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-rwxr-xr-xsrc/conf_mode/firewall.py10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/conf_mode/firewall.py b/src/conf_mode/firewall.py
index 3d799318e..2ca4bbe2d 100755
--- a/src/conf_mode/firewall.py
+++ b/src/conf_mode/firewall.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python3
#
-# Copyright (C) 2021-2022 VyOS maintainers and contributors
+# Copyright (C) 2021-2023 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
@@ -173,6 +173,14 @@ def verify_rule(firewall, rule_conf, ipv6):
if not dict_search_args(firewall, 'flowtable', offload_target):
raise ConfigError(f'Invalid offload-target. Flowtable "{offload_target}" does not exist on the system')
+ if rule_conf['action'] != 'synproxy' and 'synproxy' in rule_conf:
+ raise ConfigError('"synproxy" option allowed only for action synproxy')
+ if rule_conf['action'] == 'synproxy':
+ if not rule_conf.get('synproxy', {}).get('tcp'):
+ raise ConfigError('synproxy TCP MSS is not defined')
+ if rule_conf.get('protocol', {}) != 'tcp':
+ raise ConfigError('For action "synproxy" the protocol must be set to TCP')
+
if 'queue_options' in rule_conf:
if 'queue' not in rule_conf['action']:
raise ConfigError('queue-options defined, but action queue needed and it is not defined')