full-disclosure - Caching a sniffer

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From: se_cur_ity at hotmail.com (morning_wood)
Subject: Caching a sniffer

> > How can i know if there a sniffer running in my network?
> 
> When you wake up one day to find that you're 0wn3d :-)
> 
> Seriously, about the only way I can think of to detect a sniffer with
> its transmit leads cut is with a Time Domain Reflectometer (TDR) and
> look for an unexplained impedance bump.
> 

try your detection tools on a simple sniffer at
http://exploitlabs.com/files/misc/xsniff.zip

does not use pcap or any other "cap" libs that I am aware of.

m.wood