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User authentication
4. Enter the server IP address or hostname:
(config auth tacacs+ server 0)> hostname hostname|ip-address
(config auth tacacs+ server 0)>
5. (Optional) Change the default port setting to the appropriate port:
(config auth tacacs+ server 0)> port port
(config auth tacacs+ server 0)>
6. Enter the TACACS+ server's shared secret. This is configured in the key parameter of the
TACACS+ server's tac_plus.conf file. For example:
(config auth tacacs+ server 0)> secret testing123
(config auth tacacs+ server 0)>
7. Return to the config prompt by typing three periods:
(config auth tacacs+ server 0)> ...
(config)>
8. (Optional) Configure the group_attribute. This is the name of the attribute used in the
TACACS+ server's configuration to identify the TX54 authentication group or groups that the
user is a member of. For example, in
sample tac_plus.conf file is groupname, which is also the default setting for the group_
attribute in the TX54 configuration.
(config)> auth tacacs+ group_attribute attribute-name
(config)>
9. (Optional) Configure the type of service. This is the value of the service attribute in the the
TACACS+ server's configuration. For example, in
service attribute in the sample tac_plus.conf file is system, which is also the default setting in
the TX54 configuration.
(config)> auth tacacs+ service service-name
(config)>
10. (Optional) Repeat the above steps to add additional TACACS+ servers.
11. Add TACACS+ to the authentication methods. Authentication methods are attempted in the
order they are listed until the first successful authentication result is returned. This example
will add TACACS+ to the end of the list. See
adding methods to the beginning or middle of the list.
(config)> add auth method end tacacs+
(config)>
12. Save the configuration and apply the change:
(config)> save
Configuration saved.
>
TX54 User Guide
Terminal Access Controller Access-Control System Plus (TACACS+)
TACACS+ user
configuration, the group attribute in the
TACACS+ user
User authentication methods
configuration, the value of the
for information about
543
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