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TACACS+ Authentication
Terminology Used in TACACS Applications:
everyone who needs to access the switch, and you must configure
and manage password protection on a per-switch basis. (For
more on local authentication, refer to chapter 2, “Configuring
Username and Password Security”.)
• TACACS+ Authentication: This method enables you to use a
TACACS+ server in your network to assign a unique password,
user name, and privilege level to each individual or group who
needs access to one or more switches or other TACACS-aware
devices. This allows you to administer primary authentication
from a central server, and to do so with more options than you
have when using only local authentication. (You will still need to
use local authentication as a backup if your TACACS+ servers
become unavailable.) This means, for example, that you can use
a central TACACS+ server to grant, change, or deny access to a
specific individual on a specific switch instead of having to
change local user name and password assignments on the switch
itself, and then have to notify other users of the change.
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