NTP: Authentication sha1-128

The device supports authentication type SHA1 for NTP authentication. You can now choose SHA1 for synchronizing the clocks of Juniper Network routers, switches, and other security devices on the Internet. Using SHA-1 improves the security of devices with very little impact to timing. To enable SHA-1 authentication, use set authentication key <key_number> type sha1 value <password> at the [edit system ntp] hierarchy level.