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Date:      Sun, 21 Sep 1997 10:44:18 -0500 (CDT)
From:      Guy Helmer <ghelmer@cs.iastate.edu>
To:        Invis <invis@visi.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Securelevels
Message-ID:  <Pine.HPP.3.96.970921104240.12083A-100000@popeye.cs.iastate.edu>
In-Reply-To: <19970920105841.22820@visi.com>

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On Sat, 20 Sep 1997, Invis wrote:

> 	After ready bugtraq and the FreeBSD mailing lists, one of the
> things that seems to pop up every now and then are Securelevels, and I
> was wondering if someone could please tell me how they are defined, what
> each level does and the like. Any explanations will be appreciated! 

"man 8 init" should describe most of what you are looking for.  I believe
from reading the kernel sources that there is an undocumented level 3 that
precludes any changes to the ipfw IP packet filter list. 

Guy Helmer

Guy Helmer, Computer Science Graduate Student - ghelmer@cs.iastate.edu
Iowa State University               http://www.cs.iastate.edu/~ghelmer
Research Assistant, Scalable Computing Laboratory, Ames Laboratory




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