SNTP Authentication

SNTP authentication provides the means for the SNTP client to authenticate the SNTP server using symmetric key cryptography. Because SNTP packet data is not sensitive information, the packet itself does not require encryption. Symmetric key cryptography uses a secret password shared between the SNTP client and server to generate an encrypted checksum which is appended to the SNTP packet data. The S- K- and 7100-Series SNTP authentication supports 128-bit MD5 symmetric key cryptography.

SNTP authentication is configured by:

• Globally enabling the mode for the SNTP client
• Configuring up to 32 SNTP authentication key instances, by specifying:
  • A numeric key that identifies this SNTP authentication instance
  • The MD5 authentication type
  • A password as either an ASCII string of up to 32 printed characters (no white space) or the Hex formatted cypher produced by the previously entered ASCII string
• Associating an SNTP key instance with the SNTP server
• Enabling the authentication trust flag for the SNTP instance key assigned to the SNTP client