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- Newsgroups: alt.security
- Path: sparky!uunet!spool.mu.edu!sgiblab!tsoft!ruscal
- From: bbs.ruscal@tsoft.sf-bay.org (Russel Mar)
- Subject: Re: Detecting an Ethernet Tap
- Message-ID: <PmmouB1w165w@tsoft.sf-bay.org>
- Sender: bbs@tsoft.sf-bay.org (BBS User)
- Organization: The TSoft BBS and Public Access Unix, +1 415 969 8238
- References: <1992Nov18.102814.4127@memstvx1.memst.edu>
- Date: Mon, 23 Nov 1992 07:57:36 GMT
- Lines: 43
-
- ujacampbe@memstvx1.memst.edu (James Campbell) writes:
-
- > In article <k0BFuB1w165w@tsoft.sf-bay.org>, bbs.ruscal@tsoft.sf-bay.org
- > (Russel Mar) writes:
- >
- > > I should add that the technology to non-invasively tap fiber (as appposed
- > > to fusion splicing) has existed for quite some time. I believe Raychem
- > > Corporation (or it's subsidary Raynet) in Menlo Park, CA holds a basic
- > > patent on non-invasive taps. It was the basis for Raynet's first
- > > released telecom product, first detailed in 1987.
- > >
- > > --
- > > Russel Mar (bbs.ruscal@tsoft.sf-bay.org)
- >
- > I guess I was out of the loop on that one. What's the principle behind
- > Raynet's tapping technology?
- >
- >
- >
- > ========================================================================;-)
- > James Campbell, Math Sciences Department, MSU; ujacampbe@memstvx1.memst.edu
- > ---------------------------------------------------------------------------
- > The above text has not been reviewed by DIRNSA, and should not be construed
- > as an official release of the National Security Agency or any of its member
- > organizations. No non-public information shall be included in this message.
- > ===========================================================================
-
- The basis for that Raychem/Raynet tap was to steal light from a bend in
- the fiber. As the tap didn't require a splice, it turned a fiber into a
- true bus, since you could insert a tap anywhere in the fiber. The first
- deployment of the tap was for phone service in the U.S., while a test
- site in West Germany included both phone and video. Phone data and video
- were on separate fibers.
-
- It's been a few years since, so i no longer recall what is proprietary.
- Probably the patent has all the skinny on the principle. Alternately,
- contact Raynet Public Relations regaring the LOC-1 system at 415/324-6400
- in menlo park, CA.
-
- -Russel
-
- --
- Russel Mar (bbs.ruscal@tsoft.sf-bay.org)
-