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OPNsense Forum

English Forums => General Discussion => Topic started by: spooner.arthur on October 31, 2024, 12:15:30 PM

Title: Keep Alive for 3CX SIP 5060
Post by: spooner.arthur on October 31, 2024, 12:15:30 PM
Hello,
I want to close incoming ports to the 3CX PBX to SIP 5060
Because it is not necessary, if the connections is open.
Now, I need to configure that OPNsense doesn't close the connection from the 3CX to the Provider.
How can I setup a keep alive for this?

Thanks, Regards
Arthur
Title: Re: Keep Alive for 3CX SIP 5060
Post by: Monviech (Cedrik) on October 31, 2024, 12:22:31 PM
When STUN is configured it will send keepalives to a STUN server to keep the port open.
Title: Re: Keep Alive for 3CX SIP 5060
Post by: spooner.arthur on October 31, 2024, 05:28:09 PM
I don't use STUN

If I disable the Rule SIP 5060 it works so long I have a Call.
But after some Minutes the OPNsense close the inactive connection.
I need to reregister the SIP Trunk on the 3CX

I hope there is a setting for Keep Alives
Title: Re: Keep Alive for 3CX SIP 5060
Post by: Monviech (Cedrik) on October 31, 2024, 05:49:06 PM
The OPNsense is not responsible for sending a keepalive.

The 3CX and the SIP registrar need to use keepalives, either with SIP Options or with STUN to keep the state of the stateful firewall open.
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