Security
Configuring TACACS+
371 Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3
20
STEP 1 Click Security > TACACS+.
STEP  2 Enable TACACS+ Accounting if required. See explanation in the Accounting 
Using a TACACS+ Server section.
STEP  3 Enter the following default parameters: 
• Key String—Enter the default Key String used for communicating with all 
TACAC S+ ser vers  i n  Encrypted or Plaintext mode. The device can be 
configured to use this key or to use a key entered for an specific server 
(entered in the Add TACACS+ Server page).
If you do not enter a key string in this field, the server key entered in the Add 
TACACS+ Server page must match the encryption key used by the 
TACAC S+ ser ver.  
If you enter both a key string here and a key string for an individual 
TACACS+ server, the key string configured for the individual TACACS+ 
server takes precedence.
• Timeout for Reply—Enter the amount of time that passes before the 
connection between the device and the TACACS+ server times out. If a 
value is not entered in the Add TACACS+ Server page for a specific server, 
the value is taken from this field.
• Source IPv4 Address—Enter the device IPv4 source addresses to be used 
by the TACACS+ server.
• Source IPv6 Address—Enter the device IPv6 source addresses to be used 
by the TACACS+ server.
STEP  4 Click Apply. The TACACS+ default settings are added to the Running 
Configuration file. These are used if the equivalent parameters are not defined in 
the Add page.
STEP  5 To add a TACACS+ server, click Add.
STEP  6 Enter the parameters.
• Server Definition—Select one of the following ways to identify the 
TACAC S+ ser ver :
- By IP Address—If this is selected, enter the IP address of the server in 
the Server IP Address/Name field.
- By Name—If this is selected enter the name of the server in the Server IP 
Address/Name field.