Setup Guide

Dell(conf)#username angeline password angeline
Dell(conf)#%SYSTEM-P:CP %SEC-5-LOGIN_SUCCESS: Login successful for user angeline
on vty0 (10.11.9.209)
%SYSTEM-P:CP %SEC-3-AUTHENTICATION_ENABLE_SUCCESS: Enable password
authentication success on vty0 ( 10.11.9.209 )
Monitoring TACACS+
To view information on TACACS+ transactions, use the following command.
• View TACACS+ transactions to troubleshoot problems.
EXEC Privilege mode
debug tacacs+
TACACS+ Remote Authentication and Authorization
The system takes the access class from the TACACS+ server. Access class is the class of service that restricts Telnet access and packet
sizes.
If you have congured remote authorization, the system ignores the access class you have congured for the VTY line and gets this access
class information from the TACACS+ server. The system must know the username and password of the incoming user before it can fetch
the access class from the server. A user, therefore, at least sees the login prompt. If the access class denies the connection, the system
closes the Telnet session immediately.
The following example demonstrates how to congure the access-class from a TACACS+ server. This conguration ignores the congured
access-class on the VTY line. If you have congured a deny10 ACL on the TACACS+ server, the system downloads it and applies it. If the
user is found to be coming from the 10.0.0.0 subnet, the system also immediately closes the Telnet connection. Note, that no matter where
the user is coming from, they see the login prompt.
When conguring a TACACS+ server host, you can set dierent communication parameters, such as the key password.
Example of Specifying a TACACS+ Server Host
Dell#
Dell(conf)#
Dell(conf)#ip access-list standard deny10
Dell(conf-std-nacl)#permit 10.0.0.0/8
Dell(conf-std-nacl)#deny any
Dell(conf)#
Dell(conf)#aaa authentication login tacacsmethod tacacs+
Dell(conf)#aaa authentication exec tacacsauthorization tacacs+
Dell(conf)#tacacs-server host 25.1.1.2 key Force10
Dell(conf)#
Dell(conf)#line vty 0 9
Dell(config-line-vty)#login authentication tacacsmethod
Dell(config-line-vty)#authorization exec tacauthor
Dell(config-line-vty)#
Dell(config-line-vty)#access-class deny10
Dell(config-line-vty)#end
Specifying a TACACS+ Server Host
To specify a TACACS+ server host and congure its communication parameters, use the following command.
• Enter the host name or IP address of the TACACS+ server host.
CONFIGURATION mode
tacacs-server host {hostname | ip-address} [port port-number] [timeout seconds] [key key]
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Security