SecureLogix has released a suite of VoIP security assessment tools that are available as a free download from their web site (SecureLogix.com). The tools can help analyze the security of your VoIP network and determine whether it is susceptible to attacks such as Denial-of-Service (DoS), Man-in-the-Middle, eavesdropping, call teardown and more.
Pretty much since companies have been making the switch from traditional switched POTS (plain old telephone system) networks to VoIP, SecureLogix has been around to help secure communications. SecureLogix provides tools and services to analyze and protect both traditional and VoIP networks, and they are in the fairly unique position to assure security of both as organizations transition.
Mark Collier, SecureLogix CTO and VP of Engineering, is also known for having been co-author of McGraw-Hill’s Hacking VoIP Exposed, a part of the hugely successful Hacking Exposed series. The book contained some earlier versions of te tools released by SecureLogix. Collier maintains a blog called VoIP Security Blog.