Ntpsec

• ntp.conf(5) Network Time Protocol (NTP) daemon configuration file format
• ntp.keys(5) NTP symmetric key file format
• ntpd(8) The daemon synchronizes the local clock to one or more remote NTP servers or local timedelta sensors.
• ntpkeygen(8) create and manage NTP host keys
• ntpleapfetch(8) leap-seconds file manager/updater
• ntpmon(1) real-time NTP status monitor
• ntpq(1) standard NTP query program
• ntptime(8) read and set kernel time variables
• ntptrace(1) trace peers of an NTP server
• ntpwait(8) wait for ntpd to stabilize the system clock