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This article was posted to the Usenet group alt.hackers in 1995; any technical information is probably outdated.

Re: rlogin revealed


Article: 8397 of alt.hackers
From: jholder@nmsu.edu (John Holder)
Newsgroups: alt.hackers
Subject: Re: rlogin revealed
Date: 3 Aug 1995 19:09:59 GMT
Organization: New Mexico State University
Lines: 30
Approved: Yeah, yeah.
Message-ID: 3vr6u7$bv7@bubba.NMSU.Edu
NNTP-Posting-Host: madison.nmsu.edu
X-Newsreader: TIN [version 1.2 PL2]
Status: RO

Thus spake White Trash (mad@mv.mv.com):
] In article <3v60cb$ihq@CUBoulder.Colorado.EDU>,
] Ben Cantrick (alias Macky Stingray) <cantrick@rintintin.Colorado.EDU>
wrote:
] >In article <3v5ffa$c1o@umbc9.umbc.edu>, Jonas Schlein
<schlein@umbc.edu> wrote:
] >>Whenever I use rlogin it appears on the 'w' command so other people
can see
] >>what I'm doing. I know with telnet (at least at my site) aliases
with telnet
] >>in it seem to hide exactly where I am connected to. Also with
telnet you
] >>can use just the command and then apply an open call once
inside. Does
] >>anyone know how I can use rlogin who when people type 'w' they
will not
] >>see where I am connected to?
] >
Obhack: using the system libraries to do the above:
/* The first arg is the full path of the executable you wanna run
 * The second arg is what you what it to look like you are doing
 *     (ie, this is what ps and w and other commands will see)
 */
#include <stdio.h>

main()
{
 execl("/bin/rlogin jamminbox.site.dom", "vi thesis.tex",
 (char *) NULL);
}

netstat still reveals a connection to jamminbox.site.dom, tho, although
if a lot of users are on no one will know it's you.
    __                                                              __
 __/\_\               John Holder - jholder@nmsu.edu               /_/\__
/\_\/_/       Computer Science - New Mexico State University       \_\/_/\
\/_/\_\                  I Brew the Beer I drink!                  /_/\_\/
   \/_/          WWW: http://speedracer.nmsu.edu/~jholder          \_\/



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