Deauthorizing a Wireless Client
If you want to force wireless clients that joined the wireless network through an authentication portal (for example, a hotspot, guest access or web authentication portal) to reauthenticate themselves, you can deauthorize them. Deauthorized wireless clients remain connected to the wireless network, but these clients will be redirected to the authentication portal whenever they attempt to access network resources.
Follow these steps to deauthorize a wireless client.