The following flowcharts illustrate how MAC filtering works: MAC Filtering BehaviourĬhanges made to the local access/deny ACL are implemented in real time. Two ACLs are available for MAC filtering: The Wireless LAN System provides MAC filtering using the following methods: In 802.11 wireless networks, network access can be controlled by permitting or denying a specific station MAC address, assigned to its wireless NIC card, from attempting to access the WLAN.

A MAC address is unique to each IEEE 802-compliant networking device. MAC filtering controls a user station’s access to the WLAN by permitting or denying access based on specific MAC addresses.