Good afternoon everyone! Does anyone have any good tips or pointers using a Sophos firewall and setting up 3CX as a VM? We have AT&T on-prem SIP for voice services. The thought is to set a port on the firewall to the AT&T SIP static and then set up a DNAT to point that traffic to the 3CX VM host IP. I think that would get the SIP traffic to the server. Where I am a little confused (not a network guy mind you) is getting the traffic from the 3CX VM and sending it back out the SIP port on the firewall? The VM can migrate between 2-3 hosts. Below is a simple drawing of how we are thinking about building it out. We are open to better options and will take any tips and pointers that you have to offer. We are moving away from Cisco and want to make this deployment a home run. Thanks for your help!
