OPNsense and SIP (Hero)

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SirHumphreyAppleby

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#321511 23-Aug-2025 17:20

I've just completed my switch over from Voyager to Quic. At the same time, I intended to switch from pfSense to OPNsense as I don't like the new online installer for pfSense... I want to have an image of the latest build ready to go when something breaks.

One thing I didn't consider was an issue with SIP as there was no special config getting my Grandstream DP752 working with pfSense. NAT is simply set to keep-alive and it just worked. Unfortunately, this isn't the case with OPNsense where I am seeing not SIP registration.

Has anyone got a working configuration or at least pointers for getting the DP752 or similar working with Hero and OPNsense? I could use a few pointers!

I've tried multiple combinations or port mapping and setting static port mapping for requests from the Grandstream unit, without success.

The Grandstream is configured to use SIP port 5060 and RTP port 5004.

cyril7

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#3406964 24-Aug-2025 08:58

Hi try tcp for sip transport and see if that helps

Cyril

SirHumphreyAppleby

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#3407003 24-Aug-2025 12:05

cyril7:

Hi try tcp for sip transport and see if that helps

No luck with TCP either, unfortunately.

Using UDP I can see states for the outbound connection from the phone to the SIP server and connection from the firewall back to the phone are in place, so that much appears to be working.

I tried the 'Hero Connect' app on my phone, connected to the same network, and get the error "Account does not exist or password does not match" when I try to connect to my account. If I use a known incorrect password, I get a more specific error with a different format, so there must be some data exchange happening.