Re: Terrible problem, some men in my net changed their MACs! :/

Linux Advanced Routing and Traffic Control

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On Mon, 30 May 2005 20:41:20 +0200 Konrad <kcem@xxxxxxx> wrote:

>Is any way to detect changed MAC adresses?
I have been working on this for some time. You can try the current version:
http://shurdeek.routehat.org/tmp/dhcpwatch2.pl

(please don't ask how it works, I'm pretty busy now :-)).

>Someone taught change MACs peoples in my network and I have problems.
Yeah I know, I have seen this too.

>E.g. Two computers working on one MAC, and one IP (static ARP and DHCP).
Exactly.

>WinXP is screaming some message... that two computers or more have the
>same IP.
Actually this happens when people use the same IP but a *different* MAC.

Yours sincerely,
Peter
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