I run an SIP server which listens on UDP port 5060, and needs to accept authenticated requests from the public Internet. The problem is that occasionally it gets picked up by people scanning for SIP ...
The main question: My Asterisk logs are littered with messages like these: [2012-05-29 15:53:49] NOTICE chan_sip.c: Registration from '<sip:email@example.com>' failed for '220.127.116.11' - ...
Let me start of by saying that I'm a noob, and what I've figured out so far has only been by stumbling my way through it. I have Googled around and the solution may be out there already, but it was ...