Radius Server

Several features require communication with a RADIUS authentication server. For example, when you configure Virtual Access Points (VAPs) on the AP, you can configure security methods that control wireless client access. For details, see Radio. The WPA Enterprise security methods use an external RADIUS server to authenticate clients. The MAC address filtering feature, where client access is restricted to a list, may also be configured to use a RADIUS server to control access. The Captive Portal feature also uses RADIUS to authenticate clients.

You can use the Radius Server page to configure the RADIUS servers that are used by these features. You can configure up to four globally available IPv4 or IPv6 RADIUS servers; however, you must select whether the RADIUS client operates in IPv4 or IPv6 mode with respect to the global servers. One of the servers always acts as a primary while the others act as backup servers.