Full Disclosure mailing list archives
RE: Ancient Trivia: +++ath0
From: "Cowles, Robert D." <rdc () slac stanford edu>
Date: Wed, 17 Mar 2004 19:11:10 -0800
The version I heard went something like: Hayes implemented a "guard" ... they required a pause between the "+++" and the following command. When other manufacturers implemented the command set, they had to make some small changes so they could claim they hadn't *completely* ripped off the Hayes command set ... they left out the requirement for the pause. So, on lots of non-Hayes modems, you could get them to hang up by just sending that string as data (or including it as data in a ping packet). Bob Cowles
-----Original Message----- From: psz () maths usyd edu au [mailto:psz () maths usyd edu au] Sent: Wednesday, March 17, 2004 6:17 PM To: full-disclosure () lists netsys com; lscharf () aoe vt edu Subject: Re: [Full-disclosure] Ancient Trivia: +++ath0 Luke Scharf <lscharf () aoe vt edu> wrote:As the old BBS'ers and even older folks know, the string"+++ath0" willdisconnect a modem. ... Does anyone know what versions of windows had thisparticular bug in thePPP implementation? Were any other systems affected?I guess that the problem is not so much an issue in PPP (on the client PC or at the ISP server), but the settings of both modems. To fix, you need +++ats2=255 on both: see e.g. http://www.tldp.org/HOWTO/Remote-Serial-Console-HOWTO/modem-ha yes.html#MODEM-HAYES-ATTENTION for details. (Also, there was a discussion on BugTraq at the end of September 1998, maybe it would be useful to look in the archives?) Cheers, Paul Szabo - psz () maths usyd edu au http://www.maths.usyd.edu.au:8000/u/psz/ School of Mathematics and Statistics University of Sydney 2006 Australia _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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Current thread:
- Ancient Trivia: +++ath0 Luke Scharf (Mar 17)
- Re: Ancient Trivia: +++ath0 cstone (Mar 17)
- Re: Ancient Trivia: +++ath0 Luke Scharf (Mar 18)
- Re: Ancient Trivia: +++ath0 Alexander Bochmann (Mar 18)
- Re: Ancient Trivia: +++ath0 Cael Abal (Mar 18)
- Re: Ancient Trivia: +++ath0 Luke Scharf (Mar 18)
- Re: Ancient Trivia: +++ath0 cstone (Mar 17)
- Re: Ancient Trivia: +++ath0 Nick FitzGerald (Mar 17)
- Re: Ancient Trivia: +++ath0 Harry Hoffman (Mar 17)
- Re: Ancient Trivia: +++ath0 KF (Mar 17)
- Re: Ancient Trivia: +++ath0 Harry Hoffman (Mar 17)
- <Possible follow-ups>
- Re: Ancient Trivia: +++ath0 Paul Szabo (Mar 17)
- Re: Ancient Trivia: +++ath0 Luke Scharf (Mar 18)
- RE: Ancient Trivia: +++ath0 Cowles, Robert D. (Mar 18)
- RE: Ancient Trivia: +++ath0 Dave Horsfall (Mar 18)
- RE: Ancient Trivia: +++ath0 Radule Soskic (Mar 18)
- RE: Ancient Trivia: +++ath0 Dave Horsfall (Mar 18)
- Re: Ancient Trivia: +++ath0 3APA3A (Mar 18)
- RE: Ancient Trivia: +++ath0 Glenn_Everhart (Mar 18)