Bare fibers
Bill Frantz
frantz at netcom.com
Tue Jul 23 20:28:34 PDT 1996
At 12:30 AM 7/23/96 -0500, Douglas R. Floyd wrote:
>>
>> * Carbons sent to: In: jimbell at pacifier.com
>>
>> -=> Quoting In:jimbell at pacifier.com to Harka <=-
>>
>> In> The fiber is usually coated with a very thin layer of clear plastic to
>> In> protect against moisture and abrasion, and the diameter is around 0.5
>> In> to 1.0 millimeters in diameter.
>>
>>
>> Doesn't that make it vulnerable (detectable) to Tempest attacks?
>
>Not really sure how. I have had heard of ways to tap a fibre optic link
>noninvasively, but its not related to Van Eck or anything like that.
You could break the fiber and add a repeater (if you know enough about the
light protocol). Plastic fiber can be cut with a pocket knife, glass
requires a machine which will make a square cut and polish the end. Those
machines are not yet cheap.
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