*BSD News Article 55018


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From: sturgesj@bosco.cc.odu.edu (Jonathan Sturges)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Restricted shell in FreeBSD?
Date: Wed, 15 Nov 95 18:36:57 GMT
Organization: Old Dominion University
Lines: 20
Message-ID: <48dc2k$aki@maui.cc.odu.edu>
NNTP-Posting-Host: bosco48101.cc.odu.edu
Summary: How to make a restricted shell?
Keywords: restricted shell
X-Newsreader: News Xpress Version 1.0 Beta #4

Hi everyone,
My nutshell book, "Practical Unix Security," sez that for BSD systems in 
general, you can create a restricted shell by making a link to /bin/sh.  It 
says that sh will look to see what name was used to invoke it, and behave 
accordingly.
Anyway, I tested it, and it didn't seem to be restrictive at all.

What's the deal?  This is the first time I've tried to setup a restricted 
shell, and all I'm going on is the Nutshell book.  So maybe the info I have 
doesn't pertain to FreeBSD, or I've missed something important... :)

thanks...


Jonathan Sturges, sturgesj@bosco.cc.odu.edu
LAN/Workstation Support
Old Dominion University

"Omigod... the dead have risen, and they're
voting Republican!"   --Bart Simpson