Intrusion Detection Systems mailing list archives

Re: RE: detecting a sniffer remotely


From: tschroed () acm org (Trevor Schroeder)
Date: Sat, 16 Oct 1999 00:59:01 -0500 (CDT)



On Sat, 16 Oct 1999, CyberPsychotic wrote:

drop maliformed frames. But neither sniffing would work in such
envinroment. (just to make sure you haven't missed this detail ;-))

Be careful about this statement, it's not true.  Passive sniffing doesn't
work, but ARP-based redirection attacks do.  See a thread about this on the
Cisco 675 a while back.

The old "you can't sniff a switched network" is a load of crap.  Most
switched networks are just as vulnerable to sniffing as shared media
networks.
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