Tag Archives: SIP

COVID Surprised and Lessons Learned

“Surprise is the greatest gift which life can grant us.” Boris Pasternak Until the pandemic changed everything, I was a regular attendee at in-person IAUG chapter meetings across the country.  Most of the time I presented a topic, but on a few occasions, I was simply there to listen and learn.   Although I have never […]

The Four Pillars of Communications Security

I have been working with IP technology for a long time. I can’t tell you the exact year of my first exposure, but it was sometime between 1985 and 1987. I was working at Northern Telecom as a software developer and was tasked with adding a TCP/IP stack to a version of Unix that ran on a Motorola […]

Deploying VoIP Security the NSA Way

In my latest guest blog post for Assertion, I take a look at the NSA guidelines for securing VoIP and UC.  I learned a few new tricks and expect that you will, too.  Take a look at let me know what you think about it. Deploying VoIP the NSA Way

How Vulnerable is Your VoIP?

In my latest guest article for Assertion I ask you How Vulnerable is Your VoIP? It’s worth a look if only for a photograph of an 18-year-old me.

Beating SIP Hackers at Their Own Game

There’s an old saying that goes, “If you can’t beat ’em, join ’em.”  While I am not advocating that you become a SIP hacker, it’s important that you become familiar with the tools they use.  In my latest guest blog, I take a look at one of the most popular SIP hacking tools — SIPVicious.  […]

Planning a Successful SIP Trunk Migration

I keep getting asked to guest blog post about SIP and I just can’t seem to say “no.”  If you are planning a SIP migration or want to tune your existing configuration, this is the article for you. Planning a Successful SIP Trunk Migration

Creating SIP Trunks With Avaya CPaaS

In my latest video, I show you how easy it is to configure and deploy SIP trunks on Avaya CPaaS.  To make it simple to understand, I give you a step-by-step way to PSTN-enable a free SIP soft client.  Check it out!

Taking the Bite Out of a SIP Hacker

“Never let the same dog bite you twice.” Chuck Berry Before I discuss securing SIP, I want you to imagine a bank.  Every bank I know has a sturdy door equipped with a good lock and some form of alarm system.  Inside the bank, it’s not uncommon to have a trained security guard.  The tellers […]

Thinking Holistically about SIP Security

Every so often I am asked to write an article for a blog other than my own.  I usually respond with “no.”  There are only so many hours in the day and those few are already over-scheduled without taking on additional work.  However, I said “yes” to this one.  After all these years, I still […]

Attention, Vigilance: Securing Your SBC the Right Way

I finished my third and final (for now) No Jitter article about SIP security.  This time I take a look at what should be done at the SBC.  If you are serious about security, and you should be, please take a look. Attention, Vigilance:  Securing Your SBC the Right Way