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Date:      Tue, 1 Jan 2002 22:26:44 +0100
From:      Cliff Sarginson <cliff@raggedclown.net>
To:        FreeBSD-questions@freebsd.org
Subject:   Re: Can I rename root?
Message-ID:  <20020101212644.GD3117@raggedclown.net>
In-Reply-To: <20011231154733.A832@localhost>
References:  <20011229154552.B855@localhost> <20011230103317.A474@localhost> <20011231154733.A832@localhost>

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On Mon, Dec 31, 2001 at 03:47:33PM +0100, Rogier Steehouder wrote:
> On 30-12-2001 10:33 (+0100), Rogier Steehouder wrote:
> > On 29-12-2001 15:45 (+0100), Rogier Steehouder wrote:
> > > A simple question: Can I rename root?
> > 
> > I only got the advise: Don't. iThanks for the advise, but since noone
> > knew any programs explicitly, I did it anyway.
> 
> A short review of some of the comments I got (and my answers):
> 
> - Some people suppose I do this as some sort of security measure: Security
> by obscurity. (And isn't admin a bit predicatable then?)
> 
> Well, obscurity helps of course, but it is no substitute for bad
> maintenance. I know that and the main reason I wanted it changed was
> easthetics. I like the new name better, so why wouldn't I be able to
> change it. (And no, it's not 'admin'. That IS a bit predictable.)

Mmm. "root" being such an ugly word ?
You can always have another user with UID 0 you know, with a name
to your taste.

> 
> And Cliff, all that information you could find out about my system (and
> more) has probably been mentioned earlier in the mailing list. If I want
> usable tips, I have to give up some info, don't I? But I am curious how
> you would determine my FreeBSD version in just a few seconds. 

This is easy to do, and also (sometimes) easy to prevent if you set your
firewall up correctly. Unfortunately preventing it has a few conseqences
that are a bit of a pain..but that is not the topic under discussion.

> Besides,
> half the info you mention I can extract from your mail headers as well
> if you haven't faked them.

You are missing the point.
I am saying that as an attempt to prevent your system being cracked
changing "root" is a non-starter. I was trying to point out the kind
of information I have or could find out about you and say that is
where crackers look to crack...as well as all the port scans etc etc..
Of course it is more or less useless to ask a question on such a list as
this without saying something about your system ! The point is that
effort is better spent on securing the system at a level where it
matters. Despite all the "script-kiddies" there are a lot of people
cracking systems who are very very knowledgeable, who probably
dream about flaws they can find in the TCP/IP stack implementations.
 

-- 
Regards
Cliff



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