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SOPHOS Configuration for 3CX PBX

Hi Team,

I would like to know if there is any configuration guide or steps how to configure the SOPHOS Firewall for 3CX on-preimise PBX VOIP and IP Phones to work with STUN.

This is the 3CX documentation. Can someone help me on this.

https://www.3cx.com/support/firewall-configuration/

Please advice.

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0 Ol Deda over 5 years ago

There is no guide. But you can search and you will find posts about 3CX.

1. You just to create firewall rules to open the ports

2. Create DNAT rules (port forwarding or NAT) if you have the server inside.
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0 Ol Deda over 5 years ago

Stun and nat traversal i remember has to configured in phones that are outside the office. For phones inside the UTM there is no need, if the PBX is inside the UTM too
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