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Blocking ports...

hey all,
I need to know whether its possible to block a port on one single user in a domain with 20 or so accounts on or not? if its possible, can someone tell me how to do it... without using an ISA server that is! :)

Sincerely, Alaadin
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Eric
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firewall authentication. (many offer this.. watchguard, sonicwall etc )

otherwise, you can assign them a reserved dhcp address. and do it by IP.  This would not follow the user from pc to pc though.

maybe through group policy if you can give more deatail what your trying to block.
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Cryptonomicon

ASKER

I am trying to block port 80 (MSN and stuff) and TCP port 4662 (P2P) from a certain laptop in my domain... i have tried DHCP but it only works on a group... and since its a laptop i cannot assign it an IP, sometimes he connects from home thru the network then goes online from the network interface (Citrix)
i am letting them connect by username id and machine id not IPs actually!
u can force it by mac address to a certain IP via DHCP (if using windows DHCP server)  its called a reservation.

you could use scripts to write stuff to the hosts file.  ie:  "127.0.0.1     IM.msn.com"
or whatever

uh huhhhhhhhhhhhhhh thats what am talking about... now how do i do that "reservation" thingy? many thanks man!
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Eric
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