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Date:      Mon, 26 Nov 2001 09:04:47 -0600
From:      Mike Meyer <mwm@mired.org>
To:        "Anthony Atkielski" <anthony@freebie.atkielski.com>
Cc:        questions@freebsd.org
Subject:   Re: What is the best secure_level setting?
Message-ID:  <15362.23055.336143.894625@guru.mired.org>
In-Reply-To: <7413761@toto.iv>

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Anthony Atkielski <anthony@freebie.atkielski.com> types:
> I am looking at secure_level in FreeBSD and wondering what setting is
> appropriate.  The default seems to be the lowest possible setting of -1, but I
> don't see any obvious reason why I can't run at +1.  What levels do you all run
> your systems at normally?
> 
> I've already been warned that X servers won't run on a machine at
> secure_level=1, but for me that's just another reason not to use X servers on
> the host machine, not a reason to keep the secure_level lower.

Once you turn it up to 1, you can't install a new kernel or load
kernel modules. Other things - hardware health monitors, for instance
- also fail. For those reasons, I run things that aren't accessible
from the internet at large at -1. If an attacker has a shell account
on such a machine, the network is already fubar'ed, and I like being
able to install new kernels and run hardware health monitors on
them. Things that can be reached from the internet are set to
3. System things on them don't change very often, so this isn't much
of an inconvenience.

	<mike
--
Mike Meyer <mwm@mired.org>			http://www.mired.org/home/mwm/
Q: How do you make the gods laugh?		A: Tell them your plans.

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