Hi all,
I am looking for a little direction here. I have a FreePBX 2.9 deployed to a server in a data center (lets call it a cloud setup). I have it locked down reasonably tight with CSF and all extensions have at least 16 character secrets.
It is working quite nicely but I am getting someone trying to connect via the SIP trunk. To be able to accept incoming calls through the SIP trunk I have the “Allow Anonymous Inbound SIP Calls?” set to yes.
We only have the one SIP trunk (Pennytel) so I would like to know if I can lock down FreePBX to allow incoming SIP trunk traffic to a specific IP?
I was thinking of doing this with CSF but it would block connections from the SIP client on my mobile which has a dynamic IP, which I don’t want. All other extensions have static IP’s so I can use CSF for that.
If anyone else has an alternative recommendation then I am all ears.
Thanks in advance.