[Cialug] NTP Question

[Brett Neese]

It’s both a security and a technical reason. Having the time jump forward
would be very bad and so NTP assumes that if there’s a big jump forward
then the server is sending it bad data/is compromised. The usual way NTP
adjusts time isn’t by changing the clock - instead, it slows down or speeds
up time itself in order for the clock to catch up with the “real” time.

There’s a great, short, talk that goes into this in more detail I highly
recommend:
https://youtu.be/MDmNvVG9AnQ

Brett

On Wed, Jan 19, 2022 at 9:32 AM Todd Walton <tdwalton at gmail.com> wrote:

> Why is it that NTP is typically set with a band of tolerance between local
> and server time, outside of which it refuses to update? Is that for a
> technical reason? Security reason?
>
> --
> Todd
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-- 
Brett Neese
563-210-3459