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-rw-r--r--docs/configuration/firewall/ipv4.rst24
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diff --git a/docs/configuration/firewall/ipv4.rst b/docs/configuration/firewall/ipv4.rst
index 9a683d22..ee83967f 100644
--- a/docs/configuration/firewall/ipv4.rst
+++ b/docs/configuration/firewall/ipv4.rst
@@ -906,6 +906,30 @@ geoip) to keep database and rules updated.
Match when 'count' amount of connections are seen within 'time'. These
matching criteria can be used to block brute-force attempts.
+.. cfgcmd:: set firewall ipv4 forward filter rule <1-999999>
+ conntrack-helper <module>
+.. cfgcmd:: set firewall ipv4 input filter rule <1-999999>
+ conntrack-helper <module>
+.. cfgcmd:: set firewall ipv4 output filter rule <1-999999>
+ conntrack-helper <module>
+.. cfgcmd:: set firewall ipv4 name <name> rule <1-999999>
+ conntrack-helper <module>
+
+ Match based on connection tracking protocol helper module to secure use of
+ that helper module. See below for possible completions `<module>`.
+
+ .. code-block:: none
+
+ Possible completions:
+ ftp Related traffic from FTP helper
+ h323 Related traffic from H.323 helper
+ pptp Related traffic from PPTP helper
+ nfs Related traffic from NFS helper
+ sip Related traffic from SIP helper
+ tftp Related traffic from TFTP helper
+ sqlnet Related traffic from SQLNet helper
+
+
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Synproxy
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