[166585] in North American Network Operators' Group
Re: latest Snowden docs show NSA intercepts all Google and Yahoo
daemon@ATHENA.MIT.EDU (Jimmy Hess)
Thu Oct 31 20:53:19 2013
In-Reply-To: <CAEmG1=qwgwPwUmmuD+kzraVU8bS6gLg8zB2_07pPhx4aeSPY6w@mail.gmail.com>
Date: Thu, 31 Oct 2013 19:53:05 -0500
From: Jimmy Hess <mysidia@gmail.com>
To: Matthew Petach <mpetach@netflight.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, Oct 31, 2013 at 7:24 PM, Matthew Petach <mpetach@netflight.com>wrote:
> On Thu, Oct 31, 2013 at 7:02 AM, Ray Soucy <rps@maine.edu> wrote:
> > Was the unplanned L3 DF maintenance that took place on Tuesday a frantic
> > removal of taps? :-)
>
No need for intrusive techniques such as direct taps:
>
> http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=1494884
>
For shame.... you've sent in a link to some article behind a paywall, with
some insane download fee.
Which is an equivalent of hand-waving.
They must be hiding their content, for fear that flaws be pointed out.
"Of all the techniques, the bent fiber tap is the most easily deployed with
> minimal risk of damage or detection. The paper quantifies the bend loss
> required to
> tap a signal propagating in a single mode fiber"
>
There will be some wavelengths of light, that may be on the cable, that
bending won't get a useful signal from.
Bending the cable sufficiently to break the total internal reflection
property, and allow light to leak -- will generate power losses in the
cable, that can be identified on an OTDR.
> Matt
>
--
-JH
