Josip
ntop can't do what you need. But PF_RING can. I have developed some VoIP extensions for PF_RING that do support SIP/RTP/RTCP and perform in kernel-filtering and analysis. As soon as I have fixed the ntop bugs I hope I can find some time to release this work

Regards Luca

On Aug 8, 2009, at 11:55 PM, Josip Djuricic wrote:

Hi there,

I am new to the ntop, and I am searching to find one specific solution. We are in need of voip capturing for lawfull purposes, so I have noticed that ntop can clasify sip traffic with call id, called uri, calling uri...etc. Now the question would be is it possible to filter out specific sip traffic, correlate that info with rtp specific to that call and then forward that traffic, or at least define l2/l4 filters for some other device to do something smart with it, ie pipe it somehow to b2bua or mediaproxy?

I know I am probably asking stupipd questions, but please help?

Best regards,

Josip
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