Chapter 2 Configuring User Profiles and CSS Parameters

Configuring the CSS as a Client of a RADIUS Server

It is recommended that you configure the idle timeout to at least 30 minutes.

Setting this value to 30 minutes:

Cleans up idle Telnet sessions

Helps prevent busy conditions due to a high number of active Telnet sessions To set an idle timeout value, enter:

(config)# idle timeout 15

To revert the terminal timeout value to its default of enabled for 5 minutes, enter:

(config)# no idle timeout

Configuring the CSS as a Client of a RADIUS Server

The Remote Authentication Dial-In User Server (RADIUS) protocol is a distributed client/server protocol that protects networks against unauthorized access. It uses the User Datagram Protocol (UDP) to exchange authentication and configuration information between the CSS authentication client and the active authentication server that contains all user authentication and network service access information. The RADIUS host is normally a multiuser system running RADIUS server software.

Use the radius-servercommand to configure the CSS as a client of a RADIUS server for authentication requests by remote or local users who require authorization to access network resources.

When a user remotely logs into a CSS operating as a RADIUS client, the CSS sends an authentication request (including user name, encrypted password, client IP address, and port ID) to the central RADIUS server. The RADIUS server is responsible for receiving user connection requests, authenticating users, and returning all configuration information necessary for the client to deliver services to the users. Transactions between the RADIUS client and the RADIUS server are authenticated through the use of a shared secret.

Once the RADIUS server receives the authentication request, it validates the sending client and consults a database of users to match the login request. After the RADIUS server performs user authentication, it transmits one of the following authentication responses back to the RADIUS client:

Accept - The user is authenticated (all conditions are met).

Reject - The user is not authenticated and is prompted to reenter the username and password, or access is denied (the username does not exist in the server’s database).

 

 

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Cisco Systems 78-11424-03 manual Config# idle timeout, Config# no idle timeout

78-11424-03 specifications

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