Fiber cut - response in seconds?

Martin Hannigan martin at
Tue Jun 2 17:54:44 UTC 2009

It would also be cheaper to add an additional layer of security with
encryption vs. roving teams of gun toting manhole watchers.




On 6/2/09, Deepak Jain <deepak at> wrote:
>> No. And here's why: If you're a naughty foreign intelligence team, and
>> you know your stuff, you already know where some of the cables you'd
>> really like a tap on are buried. When you hear of a construction
>> project
>> that might damage one, you set up your innocuous white panel truck
>> somewhere else, near a suitable manhole. When the construction guy with
>> a backhoe chops the cable (and you may well slip him some money to do
>> so), *then* you put your tap in, elsewhere, with your actions covered
>> by
>> the downtime at the construction site. That's why the guys in the SUVs
>> are in such a hurry, because they want to close the window of time in
>> which someone can be tapping the cable elsewhere.
>> At least that's what I heard. I read it somewhere on the internet.
>> Definitely. Not at all a sneaky person. No sir.
> And if you were a naughty foreign intelligence team installing a tap, or a
> bend, or whatever in the fiber contemporaneously with a known cut, you could
> also reamplify and dispersion compensate for the slight amount of affect
> your work is having so that when its tested later, the OTDR is blind to your
> work.
> Ah, the fun of Paranoia, Inc.
> Deepak Jain

Martin Hannigan                               martin at
p: +16178216079
Power, Network, and Costs Consulting for Iceland Datacenters and Occupants

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