How to Secure Your Asterisk Server. A walk-through using iptables (and commands)
You have an Asterisk server and it probably isn’t secured properly. Here is how to do it using iptables. These commands don’t address SIP rtp ports, because we don’t need to worry about them. RTP traffic is dependent on SIP signaling to make it work. If we can’t get the SIP signaling messages, asterisk doesn’t […]
Call Center Architecture and Systems Selection
As many of you know, I have extensive experience in VOIP architecture and systems. I’ve decided to write this post about how to select the proper PBX or Call Center System while lowering cost of implementation and ownership. Call Center systems are some of the most complex application systems in the field of Technology due […]
When a VOIP device refuses to register through Siproxd (A quick Fix)
If you have issues with one-way audio and a linksys device (like an ATA) and you just happen to be running pfsense with Siproxd, you’ve experienced the occasional problem where the ATA or device (like the phone) just refuses to register through the siproxd (sip proxy) server. This causes many problems, the most common being […]
