Password Security

[Jerry McAllister]

On Thu, Nov 23, 2006 at 10:45:19AM +0100, VeeJay wrote:

> On 11/23/06, Olivier Nicole <on at cs.ait.ac.th> wrote:
> >
> >> And how can one into the System by booting from a CD if it still
> >> requires the Password even in Single User mode?
> >
> >Booting from CD, floppy or hard disk is slected at BIOS level.
> >
> >Booting in single or multi user mode is at Operating system level.
> >
> >Booting is in the following order:
> >
> >1) BIOS select what medium to boot from
> >
> >2) the operating system boot from the selected medium
> >
> >So when it comes to the Single user password, itis already at stage 2)
> >it has passed the stage 1 (booting from hard disk ofr CD) without
> >password.
> >
> >Olivier
> >
> 
> So, it means, that I should take the following steps
> 
> 1. Password on BIOS
> 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.
> 3. Put the password on Single User mode.

As I said, you can beat that by removing the system battery or flash memory.

> 
> So, what more? Do you people think that I have got somehow security barrier
> for unauthorized access?

The only real security is to totally prevent access.   If that machine is
in a place where you do not trust those who can touch it, then it is
insecure.

////jerry
> 
> 
> 
> -- 
> Thanks!
> 
> BR / vj
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