Dell PowerEdge FX2/FX2s - Manual (Page 225)

If an error occurs in the transmission or reception of RADIUS packets, you can view the error by enabling
the debug radius command.
Transactions between the RADIUS server and the client are encrypted (the users’ passwords are not sent
in plain text). RADIUS uses UDP as the transport protocol between the RADIUS server host and the client.
For more information about RADIUS, refer to RFC 2865, Remote Authentication Dial-in User Service.
RADIUS Authentication
Dell Networking OS supports RADIUS for user authentication (text password) at login and can be
specified as one of the login authentication methods in the aaa authentication login command.
Idle Time
Every session line has its own idle-time. If the idle-time value is not changed, the default value of 30
minutes is used.
RADIUS specifies idle-time allow for a user during a session before timeout. When a user logs in, the
lower of the two idle-time values (configured or default) is used. The idle-time value is updated if both of
the following happens:
• The administrator changes the idle-time of the line on which the user has logged in.
• The idle-time is lower than the RADIUS-returned idle-time.
Configuration Task List for RADIUS
To authenticate users using RADIUS, you must specify at least one RADIUS server so that the system can
communicate with and configure RADIUS as one of your authentication methods.
The following list includes the configuration tasks for RADIUS.
• Defining a AAA Method List to be Used for RADIUS (mandatory)
• Applying the Method List to Terminal Lines (mandatory except when using default lists)
• Specifying a RADIUS Server Host (mandatory)
• Setting Global Communication Parameters for all RADIUS Server Hosts (optional)
• Monitoring RADIUS (optional)
For a complete listing of all Dell Networking OS commands related to RADIUS, refer to the Security
chapter in the Dell Networking OS Command Reference Guide.
NOTE: RADIUS authentication and authorization are done in a single step. Hence, authorization
cannot be used independent of authentication. However, if you have configured RADIUS
authorization and have not configured authentication, a message is logged stating this. During
authorization, the next method in the list (if present) is used, or if another method is not present, an
error is reported.
To view the configuration, use the show config in LINE mode or the show running-config
command in EXEC Privilege mode.
Defining a AAA Method List to be Used for RADIUS
To configure RADIUS to authenticate or authorize users on the system, create a AAA method list.
Default method lists do not need to be explicitly applied to the line, so they are not mandatory.
To create a method list, use the following commands.
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