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Date:      Tue, 14 Aug 2001 19:50:56 -0400 (EDT)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        Alexander Langer <alex@big.endian.de>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/etc inetd.conf
Message-ID:  <Pine.NEB.3.96L.1010814194754.72605A-100000@fledge.watson.org>
In-Reply-To: <20010814213312.C22531@zerogravity.kawo2.rwth-aachen.d>

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On Tue, 14 Aug 2001, Alexander Langer wrote:

> Thus spake Robert Watson (rwatson@FreeBSD.org):
> 
> >   Default to disabling all inetd.conf entries, in particular, telnetd
> >   and ftpd.  This more conservative default reduces the exposure of
> 
> Let's disable all other services as well and start advertising FreeBSD
> with "No remote exploit in the default install since xx months/ years",
> too, as the OpenBSD folks do. 

I haven't had a chance to do a release build / from scratch install
lately, and would be interested in knowing what services we actually have
left on right now.  My guess is that for a moderate security install, sshd
and sendmail, and otherwise, none.  syslogd might be using -s instead of
-ss.  All of these programs do involve risk, syslogd possibly a fair
amount less so, and I'd be open to discussing how to disable them but
minimize impact from an administrative standpoint.  I think disabling sshd
would be fine, since we already prompt to enable it in an interactive
install.  There's been some past work on having sendmail do queue
processing out of cron, not bind sockets, etc.  I don't know much about
that, from an operational perspective, and would be interested in hearing
more about the considerations here.  For example, I do know that a number
of system functions generate e-mail (scheduled events, vi recovery, etc)
and that needs to be handled properly.


Robert N M Watson             FreeBSD Core Team, TrustedBSD Project
robert@fledge.watson.org      NAI Labs, Safeport Network Services


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