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Old 07-31-2010, 10:19 PM
Default Trying to get a grasp on NTP server/client access control options

> --8<------ /etc/ntp.conf -----------------------------------------------
> ...
> server 0.centos.pool.ntp.org
> server 1.centos.pool.ntp.org
> server 2.centos.pool.ntp.org
> ...
> restrict 0.centos.pool.ntp.org mask nomodify notrap noquery
> restrict 1.centos.pool.ntp.org mask nomodify notrap noquery
> restrict 2.centos.pool.ntp.org mask nomodify notrap noquery
> ...
> --8<--------------------------------------------------------------------
> This means roughly : "use these three public NTP servers to synchronize,
> but don't let them mess with your configuration".


The "server" lines are to tell NTP what servers to query to keep it's
own clock in sync. The "restrict" lines are used to limit which ntp
clients are allowed to use your server to sync their clock and what
alterations (if any) the client can make to your server.


"Nothing in life is to be feared. It is only to be understood."
--Marie Curie
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