If a LANCOM operates as a RADIUS server, the RADSEC port for receiving logins can be set up. In addition to that, the protocol to be used (RADIUS, RADSEC or all) can be set for each of the RADIUS clients in the client list. This allows, for example, RADIUS to be used for LAN-based clients and the more robust RADSEC via TCP to be used for registrations arriving over the Internet.