Security
Configuring RADIUS
437 Cisco 500 Series Stackable Managed Switch Administration Guide
21
• Priority—Enter the order in which this TACACS+ server is used. Zero is the
highest priority TACACS+ server and is the first server used. If it cannot
establish a session with the high priority server, the device tries the next
highest priority server.
• Key String—Enter the default key string used for authenticating and
encrypting between the device and the TACACS+ server. This key must
match the key configured on the TACACS+ server.
A key string is used to encrypt communications by using MD5. You can
select the default key on the device, or the key can be entered in Encrypted
or Plaintext form. If you do not have an encrypted key string (from another
device), enter the key string in plaintext mode and click Apply. The
encrypted key string is generated and displayed.
If you enter a key, this overrides the default key string if one has been
defined for the device on the main page.
• Timeout for Reply—Select User Defined and enter the amount of time that
passes before the connection between the device and the TACACS+ server
times out. Select Use Default to use the default value displayed on the page.
• Authentication IP Port—Enter the port number through which the
TACAC S + s e s s i o n oc cu r s .
• Single Connection—Select to enable receiving all information in a single
connection. If the TACACS+ server does not support this, the device reverts
to multiple connections.
STEP 7 Click Apply. The TACACS+ server is added to the Running Configuration file of the
device.
STEP 8 To display sensitive data in plaintext form on this page, click Display Sensitive
Data As Plaintext.
Configuring RADIUS
Remote Authorization Dial-In User Service (RADIUS) servers provide a centralized
802.1X or MAC-based network access control. The device is a RADIUS client that
can use a RADIUS server to provide centralized security.
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