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From: Olivier Nicole <on@cs.ait.ac.th>
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Cc: jerrymc@msu.edu, freebsd-questions@freebsd.org
Subject: Re: Password Security
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> 1. Password on BIOS

Knowing that it is enought to remove the battery in order to remove
the BIOS password.

> 2. Change the order of booting i.e. When system is installed and working
> once, then I just the change the Booting FIRST from HardDisk.

You can also consider to remove the CD and floppy drives. Modern
machines can boot from USB CD when needed.

> 3. Put the password on Single User mode.

Right.

4. Encrypt your hard disk. 

Olivier