Configuring Security
TACACS+ Configuration
Cisco Small Business 300 Series Managed Switch Administration Guide  195
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• Password Aging Time—Enter the number of days that can elapse before 
the user must change the password. The default is 180 days.
STEP  4 Click Apply. The password settings are set, and the switch is updated.
TACACS+ Configuration
The switch is a Terminal Access Controller Access Control System (TACACS+) 
client that relies on a TACACS+ server to provide centralized security, authorizing 
and authenticating users attempting to access and administer the switch. 
TACACS+ provides the following services:
• Authentication—Provides authentication of administrators logging onto the 
switch by using usernames and user-defined passwords. 
• Authorization—Performed at login. After the authentication session is 
completed, an authorization session starts using the authenticated 
username. The TACACS+ server then checks user privileges.
The TACACS+ protocol ensures network integrity, through encrypted protocol 
exchanges between the device and the TACACS+ server. 
TACACS+ is supported only with IPv4.
TACACS+ servers cannot be used as 802.1X authentication servers to verify 
credentials of network users trying to join the networks through the switch. 
Some TACACS+ servers support a single connection that enables the device to 
receive all information in a single connection. If the TACACS+ server does not 
support this, the device reverts back to multiple connections.