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Date:      Mon, 27 Oct 2003 18:00:42 -0800 (PST)
From:      Jason Stone <freebsd-security@dfmm.org>
To:        Wolfgang Kess <bsdlist@kess.ch>
Cc:        "freebsd-security@freebsd.org" <freebsd-security@freebsd.org>
Subject:   Re: How to disable XFree86 and wdm listening ports
Message-ID:  <20031027175709.C38023@walter>
In-Reply-To: <Pine.LNX.4.58.0310272032170.533@ragrecevfr.fsrat.fbheprsver.pbz>
References:  <20031027211512.GA14467@stinky.trash.net> <Pine.LNX.4.58.0310272032170.533@ragrecevfr.fsrat.fbheprsver.pbz>

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> For gdm, the process is similar the line to start the X server is in
> gdm.conf and would look like command=/usr/X11R6/bin/X -nolisten tcp.

If you think that you might someday invoke X with a different display
manager, you might consider replacing /usr/X11R6/bin/X with a shell script
that calls "X.real -nolisten tcp" - this would make all methods of
starting X not use the tcp port.  On the other hand, you'll have to
remember to maintain it when you upgrade.

Also, it's probably a good idea to firewall of that port as well - defense
in depth and all that.


 -Jason

 --------------------------------------------------------------------------
 Freud himself was a bit of a cold fish, and one cannot avoid the suspicion
 that he was insufficiently fondled when he was an infant.
	-- Ashley Montagu
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