[ntp:questions] Re: Mother Of All Clocks
mayer at gis.net
mayer at gis.net
Fri Mar 25 22:15:47 UTC 2005
----- Original Message Follows -----
> At 10:25 PM +0100 2005-03-25, Mxsmanic wrote:
> >> Sheesh! What kind of client needs that sort of time security?
> > Anyone who requires tight synchronization or closely-spaced,
> > accurate timestamps ... anyone who is currently using NTP,
> > presumably (otherwise why is he using NTP?).
> Telcos use NTP to keep their SONET rings tightly synchronized.
> If they don't all sorts of really horrible things can happen to the
> telco-specific communications protocols that no one outside of the
> telco business ever sees.
> NTP is also frequently used in satellite equipment. You wouldn't
> want to lose a multi-billion dollar piece of electronics because it
> didn't have it's antenna aimed the right direction at the right time,
> and at the kinds of speeds satellites are moving, being just a few
> milliseconds off could mean many, many miles of distance.
> Radio and television also frequently use NTP. The issue of good
> time sync is something that they have understood for many years, and
> time code is integral to International standards in these areas.
> Basically, anything to do with communications is more or less
> dependant on having good time sync. The more mission-critical that
> communication, the more important it is to have good time sync.
And then the military heavily. You wouldn't want that bomb to hit
your house when the bad guys are next door?
> Now, when it comes to logs, they are a vital component to piecing
> together the sequence of events, when it comes to things like
> detecting break-ins or trying to work out how someone got in, where
> they came from, etc....
> If you knowingly log incorrect data which hampers an
> investigation, you might be held criminally liable for that. Think
SOX is nothing compared to your shareholders screaming for your blood
because your transactions were a few milliseconds too late. The SWIFT
network moves Trillions of dollars through its network, yes TRILLIONS,
every day. A slight error in time has enormous repercussions.
> Brad Knowles, <brad at stop.mail-abuse.org>
> "Those who would give up essential Liberty, to purchase a little
> temporary Safety, deserve neither Liberty nor Safety."
> -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
> Assembly to the Governor, November 11, 1755
> SAGE member since 1995. See <http://www.sage.org/> for more info.
> questions mailing list
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