WESM zl Management and Configuration Guide WT.01.28 and greater

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Configuring the ProCurve Wireless Edge Services zl Module
Enabling Secure Network Time Protocol (NTP)
6. Click the Save link.
7. Make sure that your Wireless Edge Services zl Module has the proper certifi-
cates. See “Digital Certificates” on page 2-163.
Adding Symmetric Keys. Symmetric key authentication uses a single (symmetric)
key for encryption and decryption. Because both the sender and the receiver must
know the same key, it is also referred to as shared key cryptography. The secure NTP
devices use the symmetric key to authenticate their communications: they only accept
packets that have been encrypted with the shared key.
To set up symmetric keys on the Wireless Edge Services zl Module, first configure
keys and assign them a numeric key ID value. When you configure NTP neighbors
(see “Configuring NTP Neighbors” on page 2-150), you will specify the symmetric
key by entering its numeric key ID.
To add a symmetric key, complete these steps:
1. Select Special Features > Secure NTP. Configure initial settings as described in
“Configuring Secure NTP Options” on page 2-143.
2. Select the Symmetric Keys tab.