Radius Operation; Configuring Radius - Cisco IE 3000 Software Configuration Manual

Chapter 9 Configuring Switch-Based Authentication
Figure 9-2
Remote
PC

RADIUS Operation

When a user attempts to log in and authenticate to a switch that is access controlled by a RADIUS server,
these events occur:
1.
2.
3.
The ACCEPT or REJECT response is bundled with additional data that is used for privileged EXEC or
network authorization. Users must first successfully complete RADIUS authentication before
proceeding to RADIUS authorization, if it is enabled. The additional data included with the ACCEPT or
REJECT packets includes these items:
•
•

Configuring RADIUS

This section describes how to configure your switch to support RADIUS. At a minimum, you must
identify the host or hosts that run the RADIUS server software and define the method lists for RADIUS
authentication. You can optionally define method lists for RADIUS authorization and accounting.
A method list defines the sequence and methods to be used to authenticate, to authorize, or to keep
accounts on a user. You can use method lists to designate one or more security protocols to be used (such
as TACACS+ or local username lookup), thus ensuring a backup system if the initial method fails. The
OL-13018-01
Transitioning from RADIUS to TACACS+ Services
The user is prompted to enter a username and password.
The username and encrypted password are sent over the network to the RADIUS server.
The user receives one of these responses from the RADIUS server:
ACCEPT—The user is authenticated.
a.
REJECT—The user is either not authenticated and is prompted to re-enter the username and
b.
password, or access is denied.
CHALLENGE—A challenge requires additional data from the user.
c.
CHALLENGE PASSWORD—A response requests the user to select a new password.
d.
Telnet, SSH, rlogin, or privileged EXEC services
Connection parameters, including the host or client IP address, access list, and user timeouts
Controlling Switch Access with RADIUS
R1 RADIUS
server
R2 RADIUS
server
T1 TACACS+
server
T2 TACACS+
server
Workstation
Cisco IE 3000 Switch Software Configuration Guide
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