MAC FilteringMany administrators prefer to authorize wireless access based upon a system's specific MAC address. The SonicWALL's Wireless | Mac Filter List screen (shown here on top) is used to configure such security on SonicWALL devices.
Administrators deploying Linksyst equipment use the Wireless tab (and Wireless MAC Filter option) to configure similar security.
While MAC filtering helps ensure unauthorized users cannot access a wireless network, it's not foolproof. A hacker, given sufficient time to monitor transmissions between an access point and authorized client, could relatively easily determine the authorized unit's MAC address.
Erik Eckel owns and operates two technology companies. As a managing partner with Louisville Geek, he works daily as an IT consultant to assist small businesses in overcoming technology challenges and maximizing IT investments. He is also president of Eckel Media Corp., a communications company specializing in public relations and technical authoring projects.