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...P calls). What is it that prevents them from being blocked from gatewaying through to our PSTN lines? Please forgive my abysmal ignorance on this matter. Perhaps I have been down in the weeds too long getting our internal FreePBX system working to see what is obvious to others. I have been going theough the Asticon Videos on security and have or already had implemented most of the suggestions: Outbound LD secured by pins and allowed only during work hours; IPTABLES rules and fail2ban checks; Separation of voice and data network segments and addresses; Private IP for VOIP desk-sets and internal pro...

...; prevents them from being blocked from gatewaying through to our PSTN > lines? > > Please forgive my abysmal ignorance on this matter. Perhaps I have > been down in the weeds too long getting our internal FreePBX system > working to see what is obvious to others. I have been going theough > the Asticon Videos on security and have or already had implemented > most of the suggestions: Outbound LD secured by pins and allowed only > during work hours; IPTABLES rules and fail2ban checks; Separation of > voice and data network segments and addresses; Private IP for VOIP > d...

We have a FreePBX-12 / Asterisk-12 setup that supports about 24 extensions, most internal Snom870s but six or so external (Jitsi-2.8). we use TLS and SRTP everywhere on our side of the fence. The server host is a dedicated atom(tm) box using the FreePBX distro (CentOS-6.x) and is up-to-date. Registrations require very long random passwords and registrable devices are further restricted by