Most of the Macs I support are mobile & it seems that around the with the release of the “Unibody MacBook Pro” Apple stopped shipping Macs with a battery that would keep the Macs time even when the Macs main battery had died.
This means that if a Macs battery dies during travelling to another office, they’d not be able to login once there as the time would be more than 5 minutes out. Also, we heavily use SSL to secure things like our Wireless & many websites (JSS distribution points included).
So the solution was for me to setup my own NTP, that would both sync with my domains NTP & be externally accessible for those mobile users on the road.
I’ve posted How To: Set a Macs Time Server, How To: Sync Time With NTP via Script & How To: Check Your Active Directory Domains Time. They all came about when 1st looking at this issue, this last post in the series with use all those posts.
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