Linux

Asterisk on AWS Linux

A couple of months ago I decided to move my company’s Asterisk PBX system from one of our physical data-center servers to Amazon’s AWS EC2 Platform. We had been using Trixbox since 2006, but the Community Edition of that product (Trixbox CE) is no longer being developed and is no longer supported. Since I was …

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Detecting Failed AD2USB to Raspberry Pi Connections

One of my ongoing home automation frustrations is the interface between my Ademco Alarm Panel and the Raspberry Pi I use to monitor the panel’s bus traffic. The problem that I have is a termination of the USB connection between the AD2USB (AlarmDecoder) that taps into the Ademco panel and the Pi itself. This always …

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EC2, UFW and Broken SSH Access

I’m a big fan of Amazon’s EC2 platform and long ago migrated all of my servers to its “cloud”. I’m also a realist when it comes to security and take all of the reasonable precautions I can to limit my risks. One such precaution is two-factor authentication for SSH (see my article “Two-Factor Authentication System …

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The Fireplace Hack – Revisited

Back in February 2013 I wrote an article entitled “Hacking a Fireplace”. In that article I wrote about how I used an Arduino to create an interface that would allow me to directly control my fireplaces from my home automation system. That solution worked great and I was successful in running two fireplaces from the …

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