[ntp:questions] Re: ntpd polling server every second

Steve Kostecke kostecke at ntp.isc.org
Sun Apr 9 16:17:02 UTC 2006

On 2006-04-09, graham <graham at no.spam.thanks> wrote:

>    server <my ISP's ntp server>
>    driftfile /etc/ntp/drift
>    restrict default noquery notrust nomodify
>    restrict
> the daemon server was querying the ISP server every second.
> When I later modified the default restrict to "ignore" it behaved as 
> expected (ie. every 2^6 seconds).

'restrict default ignore' tells ntpd to ignore NTP packets from
_EVERYONE_ (even your ISP's ntp server). 

> If it makes a difference this is ntpd version 4.2.0.

notrust, for ntpd 4.2.x, means "ignore NTP packets that are not
cryptographically authenticated."

Steve Kostecke <kostecke at ntp.isc.org>
NTP Public Services Project - http://ntp.isc.org/

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