[CentOS] Advice in Time Sync

[John Doe]

From: John R Pierce <pierce at hogranch.com>

>>  How to set up timing if NTP was block by ISP?
> your ISP doesn't have their own timeserver you can access??
> I've never heard of an ISP blocking ntp protocol, unless they are 
> blocking /everything/ but web and email via proxy, whereupon they aren't 
> really an internet service provider, they are just a web-n-mail service 
> provider.

Maybe related to the (recent?) DDOS using ntp servers...?

JD