If a device operates as a RADIUS server, the RADSEC port can be set up for receiving logins. 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. On the one hand RADIUS can be used for the clients in the LAN, for example. Additionally, the more reliable RADSEC variant based on TCP can be used for external logins over the Internet.