I keep getting calls from a sip channel SIP/MYSERVERIP. I know its someone that has hacked my VoIP server but no matter what I do people keep getting in. This is the second time in two months.
I have BFD, my SSH port is not standard, there are no viruses ( I ran a scan to check). I am at the end of my rope. If there is a way to stop calls from a sip channel that would solve this problem.