Actually I want to prevent two things. Since the installation is done at a collage the users are not considered trustworty. Unfortunately you can't even trust on MAC addresses - most network adapters allow the user to change the MAC address. Such techniques are not used very often, I think, but it shows you that you are never secure in
On Mon, 18 Feb 2002, Oyku Gencay wrote: this way. Anyway, iptables allows you to filter services per MAC address and some other nice things, but any unauthenticated user should be treated as anonymous, no matter which ip/mac he may be using. Markus -- _____________________________ /"\ Markus Gaugusch ICQ 11374583 \ / ASCII Ribbon Campaign markus@gaugusch.at X Against HTML Mail / \