Article View: comp.security.misc
Article #314Re: Covert channel
From: John F. Haugh II
Date: Fri, 28 Aug 1992 12:57
Date: Fri, 28 Aug 1992 12:57
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1727 bytes
In article <1992Aug27.080947.10737@sniap.mchp.sni.de> frank@D012S436.sniap.mchp.sni.de writes: >So no security policy can ever be violated, because anything you may be >able to do must have been "permitted". Cracked somebody's password? >Well you were able to do it weren't you? Doesn't violate the security >policy then, does it? > >There is a difference between "security policy" (a written document), >its translation into system level parameters, and the *enforcement* of >those parameters. Perhaps there is a difference in the word "permit" between English and German, but in English the word "to permit" means that one has not only the ability, but also the authorization (what might be thought of as ``permission''). Someone seldom has ``permission'' to crack passwords, though the ability often exists. An analogy is, you are ABLE to smash in my window and enter my house, but you are not PERMITTED to do so. It's the grade school "can" and "may" argument. -- John F. Haugh II | "The US Government has the Midas Muffler Ma Bell: (512) 251-2151 | touch: everything they touch turns to UUCP: ...!cs.utexas.edu!rpp386!jfh | shit." Domain: jfh@rpp386.cactus.org | -- Jay Maynard
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Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!chinacat!rpp386!jfh From: jfh@rpp386.lonestar.org (John F. Haugh II) Newsgroups: comp.security.misc Subject: Re: Covert channel Message-ID: <21417@rpp386.lonestar.org> Date: 28 Aug 92 12:57:01 GMT References: <21382@rpp386.lonestar.org> <1992Aug27.080947.10737@sniap.mchp.sni.de> Reply-To: jfh@rpp386.cactus.org (John F. Haugh II) Organization: River Parishes Programming, Austin, Republic of Texas Lines: 24