IronPort Systems 4108GL - Manual (Page 183)

9-29
Using Passwords and TACACS+ To Protect Against Unauthorized Access
TACACS+ Authentication for Central Control of Switch Access Security
Usi
n
g P
a
sswor
ds and
TA
C
A
CS+
Operating Notes
■ If you configure Authorized IP Managers on the switch, it is not
necessary to include any devices used as TACACS+ servers in the
authorized manager list. That is, authentication traffic between a
TACACS+ server and the switch is not subject to Authorized IP
Manager controls configured on the switch. Also, the switch does not
attempt TACACS+ authentication for a management station that the
Authorized IP Manager list excludes because, independent of
TACACS+, the switch already denies access to such stations.
■ When TACACS+ is not enabled on the switch—or when the switch’s
only designated TACACS+ servers are not accessible— setting a local
Operator password without also setting a local Manager password
does not protect the switch from manager-level access by unautho-
rized persons
.)
Troubleshooting TACACS+ Operation
Event Log. When troubleshooting TACACS+ operation, check the switch’s
Event Log for indications of problem areas.
For specific troubleshooting help, see “TACACS-Related Problems” on page
18-9.