Hi Michael!

I did not test it out too much, but if you are in the same network windows
will warn that the same IP-Adress is twice on the net.
On Linux you see it, if you ping the router, he shows that the ping is
redirected.
can anyone verify this? other than that ?????

Mit freundlichen Grüßen/ sincerely yours


Bernhard Fuchs 
Junior System-Engineer 
IT-Infrastruktur

ITELLIUM 
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-----Ursprüngliche Nachricht-----
Von: Michael Ungar [mailto:m_ungar@;yahoo.com]
Gesendet: Donnerstag, 7. November 2002 05:27
An: [EMAIL PROTECTED]
Betreff: ARP Poisoning


>From security books I've read it's not hard to
eavesdrop on network communication using tools like
dsniff, even in a switched environment. My
understanding is that it is accomplished quite easily
by ARP poisoning your victim in thinking your
machine's MAC as the router MAC & after interception,
re-forwarding the traffic back to the true router MAC.

Assuming the network environment is large (e.g.,
configuring port switches for specific MAC addresses
not practical) & desktop security cannot be guaranteed
(and thereby cannot prevent people from allowing
machines to IP forward), how can one defend against
other than encrypting data.

Thanks....Mike


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