[CentOS] Could not get shadow information for NOUSER

Thu Jul 6 02:47:53 UTC 2006
Fajar Priyanto <fajarpri at cbn.net.id>

On Thursday 06 July 2006 03:46, Scott Taylor wrote:
> Hello all,
>
> I have a CentOS 4.2 server that gives me these error messages in my
> /var/log/secure file, I realise that these are SSH attacks, but where does
> the extra line "Could not get shadow information for NOUSER" come from?
> This doesn't make any sense.  I have many servers running CentOS 4.2, but
> don't get this error message on any others.  I hate junk in my logs.  Is
> there any way to get rid of it?
>
> Invalid user guest from ::ffff:210.210.4.60
> error: Could not get shadow information for NOUSER
> Failed password for invalid user guest from ::ffff:210.210.4.60 port 55073
> ssh2

It's a response from the server itself when some script kiddies try to logon 
to your server using a non existent username.
CMIIW,
-- 
Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial 
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