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Blocking certain MAC addresses

I'm running a windows NT network, using TCP/IP Protocol with DHCP and using WINS for name resolution. How can I block clients' MAC addresses? If it can be done through firewall, please suggest an effective firewall.

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If using WINS with DHCP for name resolution, you can actually have IP Addresses assigned based on the MAC addresses and have these IP addresses restricted or blocked .If you have a switch or a router , you can also block clients MAC addresses by defining an ACL on it. You can also achieve the same thing using a firewall. Some good firewalls are Gauntlet, PIX & Checkpoint.

This was first published in February 2002

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