On 5/31/05, cristian_dimache@xxxxxxxxx <cristian_dimache@xxxxxxxxx
> wrote:
Yes, I have this problem too. And I came up with two ideas: one money
comsuming, one time consuming.
Money comsuming: get management switches everywhere, and limit MAC
learning per port. My network amounts to 500+ stations, over a preety wide
area (all on ethernet), costs evaluated at 30.000$. Rather expensive, ha?
Time consuming: get into every windows workstation a program that alows
network connection if MAC is unchanged from the one stored localy in an
encrypted file.
Boss evaluated my ideas, and, guess what? I am now working on the program
described above.
It will be publicly available, of course...
> 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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Miłego Dnia
Krystian Antoni
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