My system is not handling SIP data properly from what I can see. Calls coming in from my ISP are ignored. They say it’s my firewall. I’m not so sure. I have IPFIRE send the necessary ports to my Cisco ATA model SPA112.
I am on 155 and aware that the ALG situation changed, however I had disabled ALG whilst on 154, rebooted, and able to access my VOIP from remotely then.
The Cisco is set to handle SIP on TCP port 7000.
These are the rules in IPFIRE:
With the ISP we also tried 5060, hence that rule, and I have the ATA temporarily available to remote administration on port 8081 (which does work).
Using nc from a remote machine, I get a connection refused response;
nc: connect to mylan.com port 7000 (tcp) failed: Connection refused
Firewall Logs show where the packets are obviously forwarded…but denied connection?
So is it the Cisco ATA at fault?