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Linux Tutorial :: View topic - Root Password login Problem
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Root Password login Problem

 
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koen
Beginner


Joined: Sep 12, 2005
Posts: 224
Location: Belgium

PostPosted: Wed Jan 11, 2006 6:11 pm    Post subject: Reply with quote

You need to reboot in 'single user mode'. You can then change the root password, and reboot again.

here's a good description of how to go about it
[url]http://linuxgazette.net/107/tomar.html[/url]
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koen
Beginner


Joined: Sep 12, 2005
Posts: 224
Location: Belgium

PostPosted: Wed Jan 11, 2006 8:18 pm    Post subject: Reply with quote

Hi,
[quote]i researched a little [/quote]
did you read the page i mentioned ? it gives 3 different ways of booting into single user mode and 2 ways of changing the root password.

btw, the command to change the password is 'passwd', not 'password'.
This is also mentioned in the page i mentioned.
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scooter
Newbie


Joined: Aug 25, 2002
Posts: 3

PostPosted: Wed Jan 11, 2006 9:25 pm    Post subject: Reply with quote

I checked out the page Koen suggested and it seems to cover all of the things I would have suggested myself. I am surprised that some systems allow you to boot into single user mode and login without a password, but if anyone has physical access to your system, then they will be able to get your data anyway.
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koen
Beginner


Joined: Sep 12, 2005
Posts: 224
Location: Belgium

PostPosted: Wed Jan 11, 2006 9:57 pm    Post subject: Reply with quote

I see your point.
I believe it's a legacy from UNIX. In those days, users would log in using terminals, so they'd have access only when the system was running in multi-user mode. Only system operators had physical access to the machines (often quite large and stored in a dedicated room), so they'd be able to run single user.
It's still good practise not to allow anyone to come near the servers you administar.

For desktop PC's etc, it's indeed a different story, as they are easily accessible and always have monitors and keyboards directly attached, so there these mechanisms such as password-protected single user mode, passwords for LILO, etc were developped.

I do see an advantage for having a pasword-less maintenance mode - even from a security point of view : Imagine a situation like the one prateek describes, or something like : you fire your system admin, and in return he changes the root password into something he only knows, then disappears never to be seen again. Kinda comforting that there is a way then that you can regain root control over your system (and the data stored on it) in a secure way (given that it is only possible to do this for someone who has physical access to the system - which you of course have restricted to sys admins only - and while no other users can be logged on).
Kinda makes sense, IMO.
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