[ntp:questions] Secure NTP

Chris Albertson albertson.chris at gmail.com
Mon Mar 28 19:18:45 UTC 2011

On Mon, Mar 28, 2011 at 8:56 AM,  <jimp at specsol.spam.sux.com> wrote:

> OK, so the bad guy sets up the stuff for a GPS spoofer and parks it next
> to the targeted building where high dollar value stuff goes on in hopes
> of tweeking their system clocks and stealing a fortune.

The best application of GPS signal spoofing would be at sea.  You
could ship your jammer/spoofer as cargo and have it steer the ship off
course.  After a day or two of being subtly off course the error could
add up to hundreds of miles.  then you meet it at some point and even
if the ship transmits an SOS the location will be far from the real
location and the authorities will respond to some place you are not.
However a competent ships captain would periodically check GPS using
some other method, maybe even celestial navigation.

For truck hijacking a simple jammer is used to disable any GPS
tracking.  A spoofed gps could never fool a driver into thinking he is
100 miles away and driving off road.  Even a totally confused and lost
truck driver knows he is on a road.

The obvious case where you'd like to spoof GPS is if you are being
targeted by GPS guided smart bombs or cruise missiles.   The trouble
is that the designers of said weapons have already figured that you
might be using a jammer and have planned for that.

Chris Albertson
Redondo Beach, California

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