Quote Originally Posted by chpalmer View Post
My firewall does not like to allow incoming calls unless they originate from the carriers port 5060 (or whatever my device is pointing at) so I simply give the carrier server a firewall rule to allow all ports and problem solved.
I had a voice gateway I left 5060 open to pretty much every connection. That was a mistake! Basically someone could enter phonenumber@my ip address and the call would go through. Not good! I have since locked it down so don't go getting any ideas!