[misc.security] Physical security of terminals

harrison@GPU.UTCS.UTORONTO.CA (David Harrison) (10/24/90)

We are about to replace our `dumb' ascii/tek-compatible terminals
with colour X-terminals.  Among the locations will be a dedicated
terminal room which is never locked, although the building itself
is locked from ~10PM - 7AM.  Being a university building, people
are constantly coming and going, so we regularly see winos et.al.
in the building at all hours.  So -- we are considering systems
to insure that our X-terminals are still there when we come in in
the morning.  Physical security in terms of bolting the suckers to
table tops, track balls similarly bolted down instead of mice, and
similar physical measures are taken care of.  But such schemes are
fairly trivial to bust if the person *really* wants to steal our
stuff.  We are musing about more sophisticated systems, such as
ping-ing the terminals every few minutes and if we don't get a
response calling somebody, ringing a bell, whatever.  Thus, I am
soliciting experience, ideas, and/or cautions about these issues.
---
David Harrison, Dept. of Physics, Univ. of Toronto

THOR@lcc.edu (What's So Personal About a Name Anyhow ?) (11/13/90)

In regard to your physical security issue:

	One tried and true solution is to hire student empolyess as
	terminal-baby sitters.  Students are generally are inexpensive
	and available source for employment (and they will even work
	night & early morning shifts).

	While you could go out and bolt your terminals down, a determened
	thief wouldn't be detered for long, especially in an unattended
	room full of thousand dollar terminals.

				Just a Thought!

wcs@erebus.att.com (William Clare Stewart) (11/14/90)

David Harrison asks for suggestions about keeping X terminals from
being stolen in a physically non-secure environment, such as pinging
the terminal every few minutes.  This won't work if people turn the
terminals off, or do other things that confuse the terminal too much
to answer pings, and won't work at all if there are any workstations
on the net that could be convinced to forge replies.

I don't have any POSITIVE suggestions, beyond social engineering and
maybe a video camera that's VERY obvious.  Model 029 keypunches were
a lot easier to secure - they were too big to move without major
inconvenience.
-- 
					Thanks; Bill
# Bill Stewart 908-949-0705 erebus.att.com!wcs AT&T Bell Labs 4M-312 Holmdel NJ

P.E.Smee@gdr.bath.ac.uk (11/14/90)

We've got several similar terminal rooms.  My first advice would have
to be 'get a good insurance policy'.  However, we don't actually have
much trouble -- here's what we do:

1 - Some equipment is bolted down.  Most, however, is only protected by
a 'limpet' security system.  (You see these in shops -- a little doobry
stuck to the device, and connected by wire and plug to an 'alarm' ring.
The alarm is set off if the limpet is unstuck from the device, or the
wire cut or detached.  It's an n-wire flex using both normally-open and
normally closed switches, not color-coded, so that you would have to be
pretty lucky to be able to defeat them by exposing the inner wires and
shorting across the proper two.

2 - Closed-circuit TV monitor, transmitting back to our campus security
office (rentacops).

3 - All machines clearly and irretrievably marked with University ID.
Unlike marking your home stuff, there are no points for aesthetics.
You can mark the thing up such that removing the marked bits makes them
un-saleable.

4 - Keypad doorlocks.  All our 24-hour terminal rooms have electronic
keypad doorlocks, and attempts to mung them are monitored at the
security office (yet again).  The number is changed monthly, and the
new number is announced only on our 'proper login' hosts.  So, you have
to login to one of our systems during the working day (which means we
basically have password security) in order to find out the number to
use out-of-hours to open the door.  People without login accounts can
get the number by appearing in person, during working hours and with
proper ID, at the Computing Service reception desk.

(One of the other British Universities, I believe Oxford, uses
'card-wipe' door locks, which are opened by a magnetic stripe on
student and staff ID cards.  Whoever this is also uses the technology
as an integrated library card, sports-facility card, ...)

5 - Make sure there is a phone in the room.  This phone MUST be able to
get to police, fire, emergency medical, and university security
numbers, at any time.  (A hot-line to security or the University
operators is fine, if there is someone guaranteed to be there 24 hours
a day.  Otherwise, you need a clever phone or switchboard.)

This 'works', in the sense that most computing equipment stolen from
us is NOT stolen from one of the 24-hour terminal rooms, but rather by
breaking into private offices in some of our more isolated buildings.

-- 
Paul Smee, Computing Service, University of Bristol, Bristol BS8 1UD, UK
 P.Smee@bristol.ac.uk - ..!uunet!ukc!bsmail!p.smee - Tel +44 272 303132