Date: Sat, 26 Jul 2008 22:25:28 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Polytropon <freebsd@edvax.de> Cc: freebsd-questions@freebsd.org Subject: Re: Root boot/mount Password? Message-ID: <20080726202528.GB19534@slackbox.xs4all.nl> In-Reply-To: <20080726215853.166d6840.freebsd@edvax.de> References: <3176.84.18.27.248.1217093483.squirrel@mail.dsa.es> <20080726215853.166d6840.freebsd@edvax.de>
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[-- Attachment #1 --] On Sat, Jul 26, 2008 at 09:58:53PM +0200, Polytropon wrote: > > What I want is that if the system is rebooted or shutdown, somebody must > > enter a password to boot and/or mounting "/" > > Next to the usual means of access control (no automated login, no > users without password), there would be an option to boot the system > in single user mode first. Your /etc/ttys would contain "insecure" > in the 5th field so nobody would get into the shell without the > root password. Then, fsck and mount -a, followed by "exit" or Ctrl-D > would be neccessary to boot the system into multi user mode. To > boot your system into SUM, I think /boot/loader.conf must contain > the line ,,boot_single="YES"''. Assuming physical access to the machine, this can be easily circumvented by booting from a FreeBSD CD. Of yourse you can disable booting from CD in the BIOS, and guard that with a password. But that is usually easy to wipe by shorting a jumper on the motherboard. It just depends on the amount of time and knowledge that the attacker has. Roland -- R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkiLiDgACgkQEnfvsMMhpyVeNQCfYSVSNJqunnoMWzgqhhCN7UJc wgEAn2VY/6zBhLYFl52zy9zUXZWkFeov =iN30 -----END PGP SIGNATURE-----
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