Security Tab - Authentication Servers; Radius Server Setting - Linksys MGBLH1 - Gigabit LH Mini-GBIC SFP Transceiver User Manual

Using the web-based Utility for Configuration

Security Tab - Authentication Servers

Security Tab - Authentication Servers
Remote Authorization Dial-In User Service (RADIUS) servers provide additional security for
networks. RADIUS servers provide a centralized authentication method for web access.
This switch uses the Extensible Authentication Protocol over LANs (EAPOL) to exchange
authentication protocol messages with the client, and a remote RADIUS authentication server
to verify user identity and access rights. When a client (i.e., Supplicant) connects to a switch
port, the switch (i.e., Authenticator) responds with an EAPOL identity request. The client
provides its identity (such as a user name) in an EAPOL response to the switch, which it
forwards to the RADIUS server. The RADIUS server verifies the client identity and sends an
access challenge back to the client. The EAP packet from the RADIUS server contains not only
the challenge, but also the authentication method to be used. The client can reject the
authentication method and request another, depending on the configuration of the client
software and the RADIUS server. The authentication method must be MD5. The client responds
to the appropriate method with its credentials, such as a password or certificate. The RADIUS
server verifies the client credentials and responds with an accept or reject packet. If
authentication is successful, the switch allows the client to access the network. Otherwise,
network access is denied and the port remains blocked.

RADIUS Server Setting

Index—Indicates the server number or global setting.
Server IP Address—Enter the IP address of the server.
Server Port Number (1-6535)—Enter the authentication port. The authentication port is used
during RADIUS server authentication. The authentication port default is 1812.
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