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From: Krystian Antoni <krystianantoni@gmail.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Terrible problem,
Date: Mon, 30 May 2005 19:20:30 +0000	[thread overview]
Message-ID: <258b6f7050530122061b18a2a@mail.gmail.com> (raw)


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here is my one cent :-)

propably somebody is changing a MAC so you DHCP will grant them specific IP. 


u can try nmap them them to see whos behind that MAC (at the moment where 
there is only one station turned on). then by using unplug and 
seek-the-hacker method u can find from what switch/port he's comming.
if u posses administrable switch it can be much easyier.

if u must verify every user, turn to pptp.

On 5/30/05, Konrad <kcem@tlen.pl> wrote:
> 
> Is any way to detect changed MAC adresses?
> 
> Someone taught change MACs peoples in my network and I have problems.
> 
> E.g. Two computers working on one MAC, and one IP (static ARP and DHCP).
> WinXP is screaming some message... that two computers or more have the
> same IP.
> 
> How can I find out who's changed MAC?
> _______________________________________________
> LARTC mailing list
> LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
> 



-- 
Miłego Dnia
Krystian Antoni

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             reply	other threads:[~2005-05-30 19:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-30 19:20 Krystian Antoni [this message]
2005-05-30 20:42 ` [LARTC] Terrible problem, Peter Surda
2005-05-31  6:47 ` cristian_dimache
2005-05-31 11:17 ` Krystian Antoni
2005-05-31 11:36 ` Sylvain BERTRAND
2005-05-31 12:12 ` cristian_dimache
2005-05-31 14:10 ` Peter Surda
2005-05-31 14:32 ` Sylvain BERTRAND
2005-05-31 15:07 ` Peter Surda
2005-05-31 15:26 ` Sylvain BERTRAND
2005-06-01  5:56 ` cristian_dimache

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