Disable SIP ALG on Sophos XG/XGS Firewall
When VoIP phones do not register accross IPSec VPN it is most likely the SIP ALG that is interfering with the traffic to and from the SIP server.Unfortunately Sophos does not have an option to disable SIP ALG in the Web GUI To disable SIP ALG you can follow these stepsLog into your Sophos device […]