Re: Alert when MAC address connects to network

[Pierre BETOUIN <info16 () ifrance com>]

The easiest way is to run tcpdump, with a specific filter and eventually
grep the Ethernet header.

        Pierre

Le jeu 23/10/2003 à 01:07, Peteris Krumins a écrit :
> Monday, October 20, 2003, 7:24:59 PM, you wrote:
>
> MR> Hi all!
>
> MR> We've got a problem in our school building. There are a lot of laptops 
> MR> in various classrooms and now there is one that has been stolen. We'd 
> MR> really like to be alerted when this machine connects again to the 
> MR> network and like to get our hands on the one using it now.
>
> MR> Is there a possibility to get alarmed, when a certain MAC address 
> MR> connects to our network? Any other recommendations to our problem?
>
> Oh, yes its certainly possible.
>
> The simplest solution would be to write a program, which would
> monitor the arp table entries on routers which are on the same network
> the laptops can be connected to. If the same mac detected, shoot out
> an alert.
>
>
> P.Krumins
>
>
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-- 
Pierre BETOUIN

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