I have a VoIP extension that keeps trying to register with my IPO 500v.2 9.1.2.0 in Toronto. We don't have an extension setup with this Extension number. The VoiP client IP address is in Europe. Does anyone know how to block a specific extension from trying to register with IPO?
Rogue VoIP registration
Collapse
X
-
Do you have a firewall in front of your IP Office or are you just allowing all SIP traffic through on port 5060? If you allow everything to hit the IP Office on 5060 you'll see a lot of messages like this as various bots around the world attempt to hack your system to register a phone and make free phone calls.
Comment
-
Comment