Enterasys Networks CSX5500, CSX6000, CSX7000 Tacacs Authentication Server Configuration Elements

CONFIGURING OFF-NODE SERVER INFORMATION

TACACS Authentication Server

USING MANAGE MODE COMMANDS

tacacs

Displays the current TACACS off-node server configuration data.

tacacs change

Allows you to change the current TACACS off-node server configuration data. After entering the tacacs change command, you will be prompted for the configuration elements you want to change.

TACACS AUTHENTICATION SERVER CONFIGURATION ELEMENTS

IP ADDRESS

The IP address in dotted decimal notation for the TACACS Server.

UDP PORT NUMBER

The UDP port number used by the TACACS Server. The default value of 49 is almost always used.

NUMBER OF ACCESS REQUEST RETRIES

The number of Access Request Retries that the system will send to the TACACS Server. The initial default value is 3. The acceptable range is from 0 to 32,767.

TIME BETWEEN ACCESS REQUEST RETRIES

The time between Access Request Retries sent from the system. The initial default value is 1 second. The acceptable range is from 1 to 10,000.

TACACS PACKET FORMAT

The TACACS format for device authentication. The default format is ID code, PIN.

TACACS AUTHENTICATION SERVER BACKGROUND INFORMATION

The Terminal Access Controller Access Control System (TACACS) is a database supported by the CyberSWITCH. TACACS operates using two components: client code and server code. TACACS server software is installed on a UNIX-based system connected to the CyberSWITCH network. The client protocols allow the system to communicate with the TACACS server, ultimately authenticating devices.

The following is a typical scenario if the TACACS Server is activated: with user level security, a remote user will Telnet into a specified system port for user authentication. The system, in turn, will send an access request to the primary TACACS Server. After the configured time interval the system will send an access request retry if the primary server does not respond. After the configured number of retries, the system will request authentication information from the secondary server if one is configured. The connection will be released if neither server responds to the access requests.

Note: For user level security, the CyberSWITCH’s default Telnet port number is 7000, not the normal default (23).

Central Site Remote Access Switch 219