Firewall Test Failure (SIP ALG) in V16

[Frank86]

I have been running 3CX v16 for months. (Currently on 16.0.504) behind a Meraki firewall.

When I was running v15, the firewall test passed with no problems. After upgrading 3CX to v16, the firewall test fails SIP ALG but the phone system works just fine and no changes were made to the firewall or 3CX configuration after the 3CX upgrade.

Is this just a minor annoyance? Or are there changes I need to make for 3CX to pass the SIP ALG test?

 

[cobaltit]

Is this just a minor annoyance?

You said all was working so it seems you've answered your own question.

Or are there changes I need to make for 3CX to pass the SIP ALG test?

Yes. Have you tried talking to Cisco support? There's also the possibility that your ISP equipment is causing the issue.

 

[Frank86]

Sounds good. I'll check with Cisco and my ISP.
Thank you