System Time
Defining SNTP Authentication
Cisco Small Business 300 Series Managed Switch Administration Guide 56
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After a key has been created, it must be bound to one or more relevant SNTP
servers to be authenticated. This authentication key can also be used for
authentication when receiving Broadcast synchronization.
SNTP sessions might require authentication. A Unicast SNTP server that requires
authentication must be bounded with an authentication key when it is added by
using the Add SNTP Server Page.
To define SNTP authentication:
STEP 1 Click Administration > Time Settings > SNTP Authentication. The SNTP
Authentication Page opens.
STEP 2 Select SNTP Authentication to require authentication of an SNTP session
between the switch and an SNTP server.
STEP 3 Click Apply to update the switch.
STEP 4 Click Add. The
Add SNTP Authentication Page
opens.
STEP 5 Enter the following parameters:
• Authentication Key ID—Enter the number used to identify this SNTP
authentication key internally.
• Authentication Key—Enter the key used for authentication (up to eight
characters). The SNTP server must send this key for the switch to
synchronize to it.
• Trusted Key—Select the check box to allow the switch to receive broadcast
synchronization information only from a SNTP server by using this
authentication key.
STEP 6 Click Apply. The SNTP Authentication is defined, and the switch is updated.
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