Configure RADIUS authentication for the web interface. Once this is configured, set the WebPanel Authentication to  RADIUS and  users would be authenticated via the RADIUS server configured below.

Host Specify the RADIUS server hostname or ip address here.

Shared Secret Enter the shared secret of the RADIUS server

Suffix Enter the username suffix to use when authenticating.

Timeout Enter the timeout value to wait for responses from the server.

Authentication Port Enter the port number for authentication requests.