Michael Gough

Books
Video Conferencing over IP: Configure, Secure, and Troubleshoot (Enhanced Edition) Video Conferencing over IP: Configure, Secure, and Troubleshoot (Enhanced Edition)
Video Conferencing over IP: Configure, Secure, and Troubleshoot (Enhanced Edition)
2006
How to Cheat at VoIP Security How to Cheat at VoIP Security
How to Cheat at VoIP Security
2011