VoIP

Wireshark

Wireshark VoIP Challenge

Knock off those network analysis cobwebs by downloading the file below and taking part in the Wireshark VoIP challenge. This a a short capture but a tricky one. Wireshark PCAP File MD5 Hash: 139b7dfea64ee097a4a415ba320cc5b6 The Challenge I’m currently putting together a new VoIP class and came across a nasty little Linux program that can manipulate VoIP …

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Auto Answer: Feature or Vulnerability

Auto Answer is a feature in many VoIP phones that allows the phone to go off-hook the very instant a call is received by the instrument. In this video we’ll look at how this feature is setup and talk about the security vulnerabilities. NIST Report: Link Video Conferencing Auto Answer: Link 1 Link 2 Link 3

VoIP Phones

VoIP Dialing Without a PBX

At one time I had the misconception that you had to have an IP PBX to use a VoIP phone, but it’s simply not true. In this video I’ll show you how to dial another VoIP phone without routing through the PBX or SIP Proxy. Linphone: http://www.linphone.org Grandstream phones for under $50: http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=grandstream&_udhi=50