Does MAC filtering work as a security measure?
Many access points allow you to enable MAC filtering so that only clients with specific MAC addresses can connect to the wireless network. MAC filtering works to an extent as a security measure, however, it is fairly easy to spoof a MAC address. You can make it a bit harder by enabling MAC filtering. That way, before a hacker can spoof a MAC address, he must first figure out which MAC addresses are authorized to use the wireless network, which can be done by sniffing packets. So, while MAC filtering will protect you against less skilled hackers, it won’t stop a really determined one. It will only slow him down.
