Our free trial on Linkus cloud is ended long ago. And now we have very annoying Linkus mobile ringing when outside of office wi-fi network. I asked about this situation couple months ago, no help.
So i decided to stop this at firewall
Data to gather:
1. Internal IPPBX ip-address
2. External voip providers ip addresses (i have two)
3. External DNS servers ip-address if any (188.8.131.52 in my case)
4. IP address to check firmware upgrades ( 184.108.40.206 )
So.Now i block all connection originated from 1 that is not directed to 2,3 or 4
And no more mobile linkus ringing outside of office network.
One mobile linkus annoyance left - forced password change during first setup. Anybody knows how to disable it?