15 August 2007 | 7,915 views

rtpBreak – RTP Analysis & Hacking Tool

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rtpBreak detects, reconstructs and analyzes any RTP [rfc1889] session through heuristics over the UDP network traffic. It works well with SIP, H.323, SCCP and any other signaling protocol. In particular, it doesn’t require the presence of RTCP packets (voipong needs them) that aren’t always transmitted from the recent VoIP clients.

The RTP sessions are composed by an ordered sequence of RTP packets. Those packets transport the Real Time data using the UDP transport protocol.

The RTP packets must respect some well defined rules in order to be considered valid, this characteristic allows to define a pattern on the single packet that is used to discriminate the captured network traffic from packets that can be
RTP and those that securely are not.

You can download rtpBreak here:


Or read more here the English documentation is here.


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2 Responses to “rtpBreak – RTP Analysis & Hacking Tool”

  1. TheRealDonQuixote 16 August 2007 at 9:19 pm Permalink

    Darn, Skype is down till FRIDAY!! Now I have to wait to give this one a whirl. Not that nothing else uses RTP, but VoIP is pretty much based on this protocol with no standard ports.

  2. Alfred Farrington 17 August 2007 at 2:24 pm Permalink

    The software actually works pretty well. Build a simple voip device install softphones on different computers and give it a whirl. Ah another tool for the arsenal. Documentation is old style takes me back to the BB days. Wish they put it in a wiki though,.