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Security / Networking

Check Your VoIP Networks with SIPVicious and sngrep

Open source tools can help you discover vulnerabilities in VoIP networks, fix typical problems, and boost infrastructure security and functionality.

By Thomas Joos

Updated Jul 16, 2026 4:41 PM / Published Jul 7, 2026 3:00 AM 12 min read

Black vintage telephone — Photo by Quino Al on Unsplash

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Thomas Joos

Thomas Joos is a freelance IT consultant and has been working in IT for more than 20 years. In addition, he writes hands-on books and papers on Windows and other Microsoft topics. Online you can meet him on: https://www.thomas-joos.com.