Most wireless routers can use MAC-based authentication as part of their overall security scheme. It seems like a good idea, but I've heard that it is very ineffective, because it's easy to spoof MAC addresses.
I believe that it's easy to spoof these addresses, but I don't see how that's a problem. Wouldn't hackers still need to know what MAC address to pretend to have? There are 16^16 possible MAC addresses, so that doesn't seem like too big of a problem to me. Can anyone explain?