Newsgroups: alt.security,comp.security.misc
From: dp@harlequin.com (Jeff Del Papa)
Subject: Re: Arbitrary telnetting bombs
In-Reply-To: mjr@tis.com's message of 27 Jun 1993 17:44:59 GMT
Message-ID: <DP.93Jun28214018@epcot.harlequin.com>
Organization: Harlequin Inc, Cambridge, MA
References: <22982.741133209@moose.cs.indiana.edu> <20jbbv$sp4@tigger.cc.utexas.edu>
	<13105.741159982@moose.cs.indiana.edu> <20kmar$43j@sol.TIS.COM>
Date: Mon, 28 Jun 1993 21:40:18 GMT

In article <20kmar$43j@sol.TIS.COM> mjr@tis.com (Marcus J Ranum) writes:

	   Most virtual ttys that I know of don't have answerback.
   Xterms don't, unless it's an undocumented feature.

Some X terms and some X servers have a protocol extension that allows
a program running on a random host to send things that the clients see
as keypresses. It is used originally for automeated testing, but has
also been subsumed for handicapped access (the mode I use it in).  It
was interesting the first time I tried a2x -- I hadn't set the display
variable, and wound up typing on the console which rather startled the
person using it. -- anyhow the extensions are called Xtest and Xtrap
-- x11r5 patch 18 provides them, as does the ultrix x server, and NCD
Xterms using v3.0...

<dp>