If the MAC address of a WLAN client requesting to associate is not included in the list of approved addresses, the Public Spot alternatively authenticates the address via a RADIUS server.
To enable RADIUS authentication, the administrator selects one of the RADIUS servers that has defined in the device and saved to the list of providers.
In addition, the administrator defines a lifetime for the rejected MAC addresses. The Public Spot uses this lifetime to prevent the RADIUS server from being flooded with repeated requests for MAC addresses that cannot be authenticated via the RADIUS server or MAC address table.
If a MAC address authentication is rejected by the RADIUS server, the Public Spot stores this rejection for the lifetime defined here. The Public Spot responds to further requests for the same MAC address directly and without forwarding them to the RADIUS server first.