Hello, everything is going well with the new Sophos UTM home edition I installed 3 weeks ago. Looks like all FW rules I set are working ok with exception of this SIP that I cannot get it to work. Here is my situation:
Using a Asterisk PBX located on internal network 192.168.2.0/24 I have made a static DHCP address for it and the PBX server is working fine. I use Bria soft phone on my android device to connect to it. Everything work fine with the extension (android Bria) is on local Wi-Fi. Once I get on 4G It does not work. I created a NAT rule a (DNAT) as follows:
Matching condition:
For traffic: "Any"
Using service " VoIP protocol " ( I have added here RTP ports 10K:20K TCP/UDP and the regular SIP on port UDP5060
Going to: " External address "
Action:
Change destination to: " raspbx " This is defined in "definitions and users"
Using service: blank
Automatic firewall rule is checked.
Rule is saved and enabled.
Also on VoIP settings under "Network Protection" I have:
1. Enabled it
2. Under SIP server Networks I have put " Internal network "
3. Under SIP client Networks I have added specific devices that act as extensions (android devices running Bria) and also " Internet IPV4 " for external connections
4. For Exception mode I have picked "Any" since I have external extensions.
I don't have any SIP trunks with any provider. This is just my VoIP server arranging connectivity for its own extensions, some of them are on internet. I had this all working before on my netgear router. Trying to setup the same now with the astaro UTM.
Any ideas? Have I forgotten anything? Do I need any special FW rule added? Is the NAT rule ok as a DNAT or I need a FULL NAT or 1:1 or additional SNAT Rules?
Many thanks!
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