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From: shwake@raysnec.UUCP (Ray Shwake)
Newsgroups: comp.unix.questions
Subject: Re: /rsh and /usr/bin/mailx - are they incompatible?
Keywords: rsh,mailx,restricted,mail
Message-ID: <16@raysnec.UUCP>
Date: 1 Aug 90 15:55:46 GMT
References: <1733@tssi.UUCP> <2834@awdprime.UUCP> <2911@awdprime.UUCP> <1741@tssi.UUCP> <2955@awdprime.UUCP>
Organization: IRS/CI - Technical Solutions Branch
Lines: 14

>>In article <2911@awdprime.UUCP>, tif@doorstop.austin.ibm.com (Paul Chamberlain) writes:
>>> That was why I mentioned that they might disable the pager.  At least
>>> they could still use mail (no editor though).

	Of course, one can prevent access to the shell through the editor
	using a number of techniques, viz: 1) If you have access to the
	editor source code, simply choose the no-shell option (we do this
	with the public-domain 'less' pager); 2) Using a binary editor or
	a suitable C program, overwrite relevant strings to prevent shell
	access.

	We've used the latter approach, together with a redefinition of
	SHELL to something innocuous on rsxtech, and no one has broken
	through yet.