Re: modem protective device?

[Ben Klang <bklang () surebridge com>]

If nothing else, you could fairly easily build one for around $200
(kinda expensive, I know, but it couldme used for other things as well)
using the open source PBX asterisk.

www.asterisk.org for the pbx
www.digium.com for the parts owed by the guy who writes and supports
asterisk).

If you want more info, reply to me off-list or see the websites.

-BAK

On Wed, 2003-03-19 at 13:49, Peter Van Epp wrote:
>       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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