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From: karsh@geowhiz.UUCP (Bruce Karsh)
Newsgroups: net.dcom
Subject: Wiretapping Serial & Ethernet Lines
Message-ID: <277@geowhiz.UUCP>
Date: Wed, 13-Nov-85 10:21:18 EST
Article-I.D.: geowhiz.277
Posted: Wed Nov 13 10:21:18 1985
Date-Received: Fri, 15-Nov-85 05:21:25 EST
Reply-To: karsh@geowhiz.UUCP (Bruce Karsh)
Organization: UW Madison, Geology Dept.
Lines: 18


  I recently was playing with a terminal and an oscilloscope, trying
to get the terminal working and interfaced to our system.  I noticed
that when I just held the scope probe next to the RS-232 cable, I
could see the serial data going by on the scope.

  Is it possible to non-intrusively tap a serial line like this?
Would shielded twisted pair serial lines be safer?  Can you tap
an Ethernet like this?


-- 

Bruce Karsh
U. Wisc. Dept. Geology and Geophysics
1215 W Dayton, Madison, WI 53706
(608) 262-1697
{ihnp4,seismo}!uwvax!geowhiz!karsh