From owner-freebsd-questions@FreeBSD.ORG Sun Aug 28 09:44:54 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 33AE716A41F for ; Sun, 28 Aug 2005 09:44:54 +0000 (GMT) (envelope-from rsmith@xs4all.nl) Received: from smtp-vbr10.xs4all.nl (smtp-vbr10.xs4all.nl [194.109.24.30]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8995543D45 for ; Sun, 28 Aug 2005 09:44:53 +0000 (GMT) (envelope-from rsmith@xs4all.nl) Received: from slackbox.xs4all.nl (slackbox.xs4all.nl [213.84.242.160]) by smtp-vbr10.xs4all.nl (8.13.3/8.13.3) with ESMTP id j7S9ikTH066691; Sun, 28 Aug 2005 11:44:46 +0200 (CEST) (envelope-from rsmith@xs4all.nl) Received: by slackbox.xs4all.nl (Postfix, from userid 1001) id 3AC976273; Sun, 28 Aug 2005 11:44:46 +0200 (CEST) Date: Sun, 28 Aug 2005 11:44:46 +0200 From: Roland Smith To: Dmitry Mityugov Message-ID: <20050828094446.GA17036@slackbox.xs4all.nl> Mail-Followup-To: Dmitry Mityugov , Tom Norris , freebsd-questions@freebsd.org References: <43111AAE.6090402@trancegeek.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="y0ulUmNC+osPPQO6" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i X-GPG-Fingerprint: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 X-GPG-Key: http://www.xs4all.nl/~rsmith/pubkey.txt X-GPG-Notice: If this message is not signed, don't assume I sent it! X-Virus-Scanned: by XS4ALL Virus Scanner Cc: Tom Norris , freebsd-questions@freebsd.org Subject: Re: A quick question about X11 and securelevels X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Aug 2005 09:44:54 -0000 --y0ulUmNC+osPPQO6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Aug 28, 2005 at 12:59:36PM +0400, Dmitry Mityugov wrote: > On 8/28/05, Tom Norris wrote: > > I understand the things like not allowing the system clock to change and > > not allowing formatting of filesystems, but I want to know why you can't > > run x11 when you have a securelevel greater than or equal to one. there > > is no _serious_ reason I wish to know, I'm just curious and google keeps > > feeding me tutorials on making my FreeBSD machine furiously hard to > > crack. :) A securelevel >0 prevents /dev/mem and /dev/io to be opened for writing. X need to write to these devices. =20 > Not an exact answer to your question, but securelevel does not > prohibit you from runnung X if it is set after X started (from one of > .x... files in your home directory instead of rc.conf perhaps?) The security level is set with sysctl (kern.securelevel). You must be root to set it. Roland --=20 R.F.Smith (http://www.xs4all.nl/~rsmith/) Please send e-mail as plain text. public key: http://www.xs4all.nl/~rsmith/pubkey.txt --y0ulUmNC+osPPQO6 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFDEYeOEnfvsMMhpyURAmPnAJ9+oqvA/qWMsOoZgzmr6JAg1Js+igCfR3g4 TFW+LE/YXZ+nr1nr7xc9tOU= =7L0S -----END PGP SIGNATURE----- --y0ulUmNC+osPPQO6--