Helpful Hints...
Create a list of MAC addresses that you would either like to allow or deny access to your network.
Computers that have obtained an IP address from the router's DHCP
server will be in the DHCP Client List. Select a device from the drop
down menu, then click the arrow to add that device's MAC address to the
list.
Click the Clear button to remove the MAC address from the MAC Filtering list.
More...