Re: NTP Sync Issue Across Tata (Europe)

["Jay R. Ashworth" <jra () baylink com>]

----- Original Message -----
> From: "John Gilmore" <gnu () toad com>

> Am I confused?  Getting the time over a multi-gigabit Internet from a
> national time standard agency such as NIST (or your local country's
> equivalent) should produce far better accuracy and stability than
> relying on locally received GPS signals.  GPS uses very weak radio
> signals which are regularly spoofed by all sorts of bad actors:
>
>  https://www.gps.gov/spectrum/jamming/
>
> for all sorts of reasons (like misleading drone navigation):
>
>  https://en.wikipedia.org/wiki/Iran%E2%80%93U.S._RQ-170_incident
>
> Depending on satnav systems creates a large single point of failure for
> worldwide civilian infrastructure.
>
> Jamming GPS with subtly fake time data near big data centers seems like
> an easy move that would cause all sorts of distributed algorithms to
> start failing in unusual ways.  And in a more serious wartime attack,
> many or most GPS satellites themselves would be destroyed or disabled.

Maybe I'm getting too old, but it seems to me like the time when Internet
systems design engineers did *not* need to design like a nation-state actor
might affect their systems by combat attack... ended a couple decades ago.

And if your bean-counters tell you it's not cost-effective to make it that 
tight, maybe it's time to change jobs?

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra () baylink com
Designer                     The Things I Think                       RFC 2100
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