From mboxrd@z Thu Jan  1 00:00:00 1970
From: active <activeNO@SPAMdespammed.com>
Subject: Re: MAC addresses
Date: Sat, 11 Sep 2004 22:01:59 +0200
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On "Sat 11 of September 2004" Darren Kirby wrote:

> Are MAC addresses unique for all ethernet cards? What I would like to
> know is could I use this rule to allow ssh connections ONLY from my
> notebook no matter what its current IP address happens to be, and drop
> all other connection requests?

Yes. MAC addresses are set in the card by the manufacturer. This is a
good method to control input traffic.

For more info: http://www.webopedia.com/TERM/M/MAC_address.html