How to disable SIP ALG on Sophos XG appliances

SIP ALG is a console level feature on Sophos. It is not available through the GUI.  The administrator can enable / disable the SIP module by following the steps below:

1. Log in to the CLI using Telnet or SSH. You can also access the CLI from admin > Console in the upper right corner of the Admin Console screen.

2. Choose option 4. Device Console.

3. Execute the following command(s):

console> system system_modules sip unload