Security
Configuring RADIUS
338 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)
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Configuring RADIUS
Remote Authorization Dial-In User Service (RADIUS) servers provide a centralized
802.1X or MAC-based network access control. The device is a RADIUS client that
can use a RADIUS server to provide centralized security.
An organization can establish a Remote Authorization Dial-In User Service
(RADIUS) server to provide centralized 802.1X or MAC-based network access
control for all of its devices. In this way, authentication and authorization can be
handled on a single server for all devices in the organization.
The device can act as a RADIUS client that uses the RADIUS server for the
following services:
Authentication—Provides authentication of regular and 802.1X users
logging onto the device by using usernames and user-defined passwords.
Authorization—Performed at login. After the authentication session is
completed, an authorization session starts using the authenticated
username. The RADIUS server then checks user privileges.
Accounting—Enable accounting of login sessions using the RADIUS server.
This enables a system administrator to generate accounting reports from
the RADIUS server.

Accounting Using a RADIUS Server

The user can enable accounting of login sessions using a RADIUS server.
The user-configurable, TCP port used for RADIUS server accounting is the same
TCP port that is used for RADIUS server authentication and authorization.

Defaults

The following defaults are relevant to this feature:
No default RADIUS server is defined by default.
If you configure a RADIUS server, the accounting feature is disabled by
default.