Alert when MAC address connects to network

[Magnus Rembold <magnus () munterbund de>]

Hi all!

We've got a problem in our school building. There are a lot of laptops 
in various classrooms and now there is one that has been stolen. We'd 
really like to be alerted when this machine connects again to the 
network and like to get our hands on the one using it now.

Is there a possibility to get alarmed, when a certain MAC address 
connects to our network? Any other recommendations to our problem?

Many thanks in advance,
Magnus


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