8. How to set MAC Address Filtering
Normally I would suggest using WPA-PSK as a better safer encryption method . However Some older PC cards will not support WPA-PSK. Windows 2000 and earlier will not support WAP-PSK easily, and many Linux distributions are more trouble that it's worth, even in 2008, to get WPA-PSK working (I just loaded the very cream of Linux - Ububtu HardyHeron, and it took a lot of Googling to work around the bugs in that distro)
But simple WEP, although safe from the likes of you and me, is not safe from weekend warrior hackers looking for a challenge and a bit of free bandwidth for file "sharing", and who have the time and inclination to download WEP cracking software from the Internet.
MAC Address filtering is a way to put another hurdle in their way in addition to WEP encryption. MAC address filtering in many "normal" ADSL routers uses a simple table that you type in MAC addresses - but this is the BT Home Hub and as usual it ain't that straightforward. Nevertheless if you like duck shoot games you'll love this one.
Whether it's on V1 or V1.5 hubs the process seems to be the same.
Go into hub's advanced pages, Wireless Security.
Change "Allow New Stations" to New Stations are Allowed by registration
You will lose wifi contact to the hub.
Get ready to connect again using your PC
Press and hold the Wireless Association button for a few seconds til the Phone and Wifi lights flash. (On V1 the button is on the back, on V1.5 hubs it's on the right hand side at the top.)
V1 hub lights twinkle independantly, V1.5 lights flash orange together.
You now have about 30 seconds to connect the PC by Wifi as usual. The Wireless Association button allows your PC to connect to the Hub then registers the hub's MAC address.
Repeat for any other wifi devices or PCs/
Nobody else can now connect by wifi to your hub unless they can get to your hub OR they are able to intercept and spoof your MAC address, but that is of very low liklihood in a domestic situation.
Note for experimenters: WDS connected slaves seem to be unaffected by MAC address filtering, in fact because WDS registers the MAC address of the other hub or repeater you can even change the SSID of the other device and WDS still connects the hubs together.