Netscreen firewalls have certain protocol inspection features enabled by default. These features are listed in the ALG section of the configuration. To view current settings issue “get alg” . These features have been known to cause connection issues with certain version/implementation by the applications. A couple of these protocols which are known to have issues with ALG are VOIP and SQL.
To disable protocol inspection for these issue the following: (note that all required ports will need to be manually added to the policy )
unset alg sip enable unset alg mgcp enable unset alg sccp enable unset alg sql enable unset alg rtsp enable unset alg h323 enable unset alg sctp enable