hi, in a cybercafe setup i have a mandrake server connected to dsl and squid and dhcp. The other machines are a variety of windoze stuff. I would like the facillity of enabling/disabling internet access for specific machines from the server. If i give each windoze machine a specific ip address, this can be done. But the user can always change the ip address in windoze. Any suggestions on how to do it?