Edimax Technology EW-7438RPn - Manual (Page 30)

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2-2-5 MAC Address Filtering
Besides using wireless security to only allow permitted wireless users to
use this wireless repeater, you can also use MAC address filter to allow
wireless users with certain MAC address to use this wireless repeater.
This will enhance security because you can make a ‘white list’ to allow
users on the list to use this wireless repeater only in advance. For those
clients who don’t list on this white list can’t get connected, even he or she
know the password.
To access ‘MAC Filtering’ menu, click ‘MAC Filtering’ on the left.
The following setup page will appear: