I'm getting multiple entries on our Debian instance which seem to be having an impact on our server (call quality).
During the evening (when these entries decrease) we're getting a better call quality.
The entries provide a MAC address that's not valid.
What can I do to diagnose these entries...
I upgraded my 3CX system to SP6 and my firewall test does not pass the test for ports 10600 to 10998. He says he has the following error full cone test failed.
My system has an external address directly connected and it has no firewall rule upfront.
I tried to add the ports with the following...