How to configure an Airport Express router to block a machine after many failed wifi connection attempts? There's someone in my neighbourhood that keeps cracking the WPA2 password on my Airport Extreme router, connecting, and using between 5 to 15 Gigs of bandwidth a day.

I've read online that with utilities, even a complex WPA2 password can be cracked within hours or a couple of days.

Is there a way to configure my Airport Extreme router to block connection attempts from a machine after X number of failed password attempts?
I don't believe you can do that, but you can use the "timed access" feature to block all MAC addresses other than the ones you own.

http://forums.macrumors.com/showthread.php?t=508984