Authenticated Public NTP server howto

Configuring an NTP server is by far not the most strait forward nor best documenting activities while managing a data center. Adding authentication on top of it, just makes things worse, far worse. Fortunately, it’s something only done once. The end goal: Authenticated NTP. ntpdate -d -k /etc/ntp.keys -a 10 9 Jul 23:24:33 ntpdate[19359]: ntpdate [email protected] Fri May 28 01:20:57 UTC 2010 (1) Looking for host and service ntp host found : transmit( receive( receive: authentication passed

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