Configuring my first Sophos UTM (SG125). I have a Samsung phone system configured to support VoIP phones for a couple users who work from home.
I've configured DNAT/Firewall rules but I'm not sure if I need to do anything else to make sure the external phones will register and work properly. It was unclear if I should enable SIP Protocol Support in Network Protection/VoIP and define anything there.
Based on past experience with other firewalls, disabling the SIP ALG was almost always necessary in these type of scenarios.
This thread was automatically locked due to age.
