@ptravel wrote:
I have a FreePBX 13 system with about 18 extension, local and remote, that runs just fine. It sits on the same LAN as all my other computers and hardware. It's subject to the usual hacking attempts, but FreePBX's firewall handles all of them without problem.
Lately, a single extension (a Grandstream GXV3275) will show an incoming call that does not come from FreePBX (I've checked the logs and there's nothing) and does not generate a ring. The CID shows as a three digit number that, over time, has worked its way up from 100, i.e. 101, 200, 201, 300, etc. Clearly, this looks like a hack. I've captured the IP stream to the phone and I think I've identified an IP address from which it originates. The problem is, I have no way of stopping it. My router uses dd-wrt and I can't figure out a way to block an IP address or range.
I can't imagine this will pose a real problem, as the extension is just an extension and does not connect directly to a trunk; the hacker will never "get in" to the phone and shouldn't be able to place calls. However, it's really annoying.
Any ideas?
Posts: 6
Participants: 4