[ntp:questions] Secure NTP

jimp at specsol.spam.sux.com jimp at specsol.spam.sux.com
Mon Mar 28 20:54:05 UTC 2011

Chris Albertson <albertson.chris at gmail.com> wrote:
> 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 this to work, your spoofer has to spoof 4 satellites as well as know
its actual position independant of GPS so the ship is steered to somewhere
that you can find it.

Most civilian ships these days have neither the people or equipment to do
celestial navigation.

And all of this is pointless as once the ship is any significant distance
at sea as all you have to do is attack the ship from a faster boat that
is well armed.

Google Somali pirates.

> 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.

So GPS tracking is AFU.

All that means is the trucking compay is unable to say for sure the
driver didn't spend a couple of hours at the boobie bar.

It doesn't do much for you unless you intend to steal the entire truck
and keep it for long that the cops become involved.

Jim Pennino

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