RE : modem protective device?

["El Khoury" <helkhoury () lynx-technologies com>]

I've heard of a tool called ModemSwitcher from ABSecure that "isolates
and protects your LAN while your workstation or other workstations of
your LAN are connected to the Internet by modem".

For more information, check :
http://www.absecure.com/products.html#ModemSwitcher 

There are also "PBX firewalls" that can (like the TeleWall Firewall,
http://www.securelogix.com/telewall  ) "detect, log, and control all
inbound and outbound telecom network activity based on user defined,
automated security policies".

I hope this would be helpful.


Regards,

Hadi El-KHoury
Information Security Consultant
Lynx Technologies
http://www.lynx-technologies.com 


-----Message d'origine-----
De : Peter Van Epp [mailto:vanepp () sfu ca] 
Envoyé : mercredi 19 mars 2003 19:50
À : pen-test () securityfocus com
Objet : 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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