Hacker? IP Conflict with mysterious changing MAC address
From: David of San Francisco (dbrasure@ardenwood.org)
Date: 10/19/02
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From: "David of San Francisco" <dbrasure@ardenwood.org> Date: Fri, 18 Oct 2002 15:39:00 -0700
I have a situation where I believe a hacker has gotten
into our network. Looking for some tips on knocking him
out.
Here's the story
Windows 2000 Server every day has an IP conflict with
another device our network. The server was given it's
number via a DHCP server on our firewall.
I thought maybe the firewall was screwing up, so I hard
encoded a IP number to the server, in a range that the
firewall would never assign. IP conflic back the next
day.
I then went to every network device and recorded it's MAC
address. Next time the IP conflict happened I looked for
it on the MAC address list and it was not there. And
each time it had a conflict the MAC address was always
different.
Any ideas?
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