Penetration Testing mailing list archives

RE: modem protective device?


From: "Stephan Barnes" <stephan.barnes () foundstone com>
Date: Wed, 19 Mar 2003 13:26:45 -0800

Peter,

I think what you seek is Challenger TT

http://www.cpscom.com/gprod/challtt.htm

Happy War Dialing if that was not the case :)

Stephan "M4phr1k" Barnes 
Stephan.Barnes () Foundstone com

http://www.m4phr1k.com



-----Original Message-----
From: Peter Van Epp [mailto:vanepp () sfu ca] 
Sent: Wednesday, March 19, 2003 10:50 AM
To: pen-test () securityfocus com
Subject: modem protective device?


        While not strictly on topic, assuming they are still made this
may be of interest to those of you concerned with modems and wardialing.
        Some 20 years ago in a previous life I had a modem protective
device (a modem condom!) which fronted the modem on the phone line and
when dialed supplied a sythisized voice which asked you to "enter your
code". You then fed it a code via DTMF and it (if it liked your code)
faked ring to the 
attached modem and then passed the call through when the modem answered.
This 
is of course very good protection against war dialing (which is the
pen-test 
relevance that I hope will get this through moderation :-)), since the
war 
dialer gets a human (or semi human) voice not modem tones. The problem
is that 
several google searches on "wardialing modem protection" in various 
combinations turn up lots of articles on war dialing but no references
that I 
can see to the product that I want again. Does anyone know a source of
such a product? I find it hard to believe that such a useful device has
died out!

Peter Van Epp / Operations and Technical Support 
Simon Fraser University, Burnaby, B.C. Canada

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