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 GS748T Smart Switch
After you add one or more TACACS+ servers, additional fields appear on the TACACS+ 
Server Configuration page.
2. In the Priority field, specify the order in which the TACACS+ servers are used. A value of 0 
is the highest priority.
3. In the Po
rt field, specify the authentication port number through which the TACACS+ 
session occurs. The default is port 49, and the range is 0–65535.
4. In the Ke
y String field, specify the authentication and encryption key for TACACS+ 
communications between the GS748T and the TACACS+ server. This key must match the 
encryption used on the TACACS+ server. The valid range is 0–128 characters.
5. In the Co
nnection Timeout field, specify the amount of time that passes before the 
connection between the device and the TACACS+ server times out. The field range is from 
1 to 30 seconds.
6. If you ma
ke changes to the page, or add a new entry, click Apply to apply the changes to 
the system.
7. T
o delete a configured TACACS+ server, select the IP address of the server from the 
TACACS+
 Server drop down menu, and then click Delete.
Authentication List Configuration
Use the Authentication List page to configure the default login list. A login list specifies one or 
more authentication methods to validate switch or port access for the admin user.
Note: Admin is the only user on the system and is assigned to a 
preconfigured list named defaultList, which you cannot delete.
To access the Authentication List page, click Security  Management Security, and then click 
the Authentication List link.