Which MAC Address for Wireless MAC Filter?

I am setting up a new wireless router for my home network. I want to enable the Network to only accept a small number of devices.
Which MAC Address should I use, the computer MAC Address or the Airport MAC Address?
Thanks.
-Joe

Welcome to Apple Support Communities.
The AirPort MAC address is the one to use when limiting wireless access by MAC address.
Do include the computer MAC address to be certain you can still connect to the router via wired Ethernet cable in case the wireless network becomes unavailable.
I fully configure my router with a wired Ethernet connection before turning on any wireless access.
That way, the router is never visible and unsecured until you've completed your configuration.
And when complete, be sure to save the router config file. My D-Link writes the config to my local hard drive.
It's a pain to re-enter all those MAC addresses from scratch if you have to reset the router to an unconfigured state. At best, you can simple reload the saved config file.
At worst, having a screen print of the permitted MAC addresses and device names makes re-entering the info manually much easier than running around the house or office trying to locate the MAC addresses of all the phones, pods, tablets, game systems, and printers!
From a security standpoint, filtering wireless access by MAC address doesn't absolutely guarantee that a determined hacker with unlimited time and a 'sniffer' can't ever get in, but a casual thief simply looking for free WiFi will keep looking for an easier target.

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