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 your.ntpserver.com 9 Jul 23:24:33 ntpdate[19359]: ntpdate [email protected] Fri May 28 01:20:57 UTC 2010 (1) Looking for host your.ntpserver.com and service ntp host found : 13.3.150.148 transmit(13.3.150.148) receive(13.3.150.148) receive: authentication passed