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Scott Taylor | 5 Jul 2006 16:53

Could not get shadow information for NOUSER


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

Cheers.

--
Scott

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Scott Taylor | 5 Jul 2006 17:02

Re: Could not get shadow information for NOUSER


Oh, and yes there is a NOUSER user in the system.

On Wed, July 5, 2006 07:53, 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
>
> Cheers.
>
> --
> Scott
>
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo <at> vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
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Scott Taylor | 6 Jul 2006 16:16

Re: Could not get shadow information for NOUSER


On Wed, July 5, 2006 16:38, amjgoleafs <at> netscape.net wrote:
> How about just trying to disable the ping enquiries which precede these
> snooper attacks:
>
>   echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all
>
>   echo 0 to reverse the command

Interesting.  Where is this located?

> -----Original Message-----
> From: Scott Taylor <scott <at> dctchambers.com>
> To: linux-admin <at> vger.kernel.org
> Sent:   Wed, 5 Jul 2006 08:02:59 -0700 (PDT)
> Subject: Re: Could not get shadow information for NOUSER
>
>
> Oh, and yes there is a NOUSER user in the system.
>
> On Wed, July 5, 2006 07:53, 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
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Thushara Wijeratna | 11 Jul 2006 23:10
Picon

top command is a top resource hog?

I couldn't find the archive for this list. Can someone please point me to it?
I'm investigating a perf issue on an AMD 8080 dualcore (8 CPU) box and
when I run top(3.2.3), often top seems to be using 30-50% CPU. Is this
a known issue?

Thanks,
Thushara
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chuck gelm | 12 Jul 2006 00:24

Re: top command is a top resource hog?

Thushara Wijeratna wrote:

> I couldn't find the archive for this list. Can someone please point me 
> to it?
> I'm investigating a perf issue on an AMD 8080 dualcore (8 CPU) box and
> when I run top(3.2.3), often top seems to be using 30-50% CPU. Is this
> a known issue?
>
> Thanks,
> Thushara
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo <at> vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
Q1:
Google'd - linux admin vger archive

http://vger.kernel.org/vger-lists.html#linux-admin

Q2:
I do not know.  I have top v3.2.5

HTH, Chuck

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Scott Taylor | 15 Jul 2006 22:04

Single purpose


Hello admins,

I have a client that wants a workstation that can do only one thing:
connect a browser to a website and that is all.  Only the one website too.
 I'm thinking something with Squid, maybe, or some IPTables entry, on a
stand alone workstation (probably CentOS).

Does that sound do-able?

Any suggestions?

Auto login to Gnome, or maybe a simple desktop like TWM, would be nice
too, if that is possible.

Cheers for any advice.

--
Scott

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shane@hostgator.com | 15 Jul 2006 22:28
Favicon

Re: Single purpose

Sounds like you want a kiosk solution, google would be good for all of 
the relevant docs.

Scott Taylor wrote:
> Hello admins,
>
> I have a client that wants a workstation that can do only one thing:
> connect a browser to a website and that is all.  Only the one website too.
>  I'm thinking something with Squid, maybe, or some IPTables entry, on a
> stand alone workstation (probably CentOS).
>
> Does that sound do-able?
>
> Any suggestions?
>
> Auto login to Gnome, or maybe a simple desktop like TWM, would be nice
> too, if that is possible.
>
> Cheers for any advice.
>
> --
> Scott
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo <at> vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>
>
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Scott Taylor | 17 Jul 2006 16:30

Re: Single purpose


On Sat, July 15, 2006 13:28, shane <at> hostgator.com wrote:
> Sounds like you want a kiosk solution, google would be good for all of
> the relevant docs.

So that's what you call it.  You are right, there is a lot of stuff on
Google about Kiosks.  Any preferences?

Has anyone set up a "Kiosk" that would like to share some wisdom?

In case anyone missed the original message, I need to set up a workstation
that will only allow a user to connect to a specific web site and
shouldn't be able to do anything else.

Cheers.

--
Scott

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chuck gelm | 17 Jul 2006 17:18

Re: Single purpose

Hi, Scott:

I am not sure about 'wisdom', but here is a thought.
How large is the 'specific web site' and how often does
the data change?  Perhaps a local copy of the website
would suffice if the amount of data is small.  Would an
image of the 'SWS' fit on a DVD/R?

 How often does the data on the SWS change?
If seldom and the data is small (<4.7 GB), a local
DVD/R might work.

Or, perhaps the data returned from the SWS is
dynamic and this will not work.

What, more exactly, do you need?

HTH, Chuck

Scott Taylor wrote:

>On Sat, July 15, 2006 13:28, shane <at> hostgator.com wrote:
>  
>
>>Sounds like you want a kiosk solution, google would be good for all of
>>the relevant docs.
>>    
>>
>
>So that's what you call it.  You are right, there is a lot of stuff on
(Continue reading)

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Scott Taylor | 17 Jul 2006 17:20

Re: Single purpose


On Mon, July 17, 2006 08:18, chuck gelm wrote:
> Hi, Scott:
>
> I am not sure about 'wisdom', but here is a thought.
> How large is the 'specific web site' and how often does
> the data change?  Perhaps a local copy of the website
> would suffice if the amount of data is small.  Would an
> image of the 'SWS' fit on a DVD/R?
>
>  How often does the data on the SWS change?
> If seldom and the data is small (<4.7 GB), a local
> DVD/R might work.
>
> Or, perhaps the data returned from the SWS is
> dynamic and this will not work.

You're right.  That wouldn't work.

> What, more exactly, do you need?

I need a workstation that can not be changed, in any way, by users, and
they need to access a corporate web site, and nothing else.  That is all,
and nothing more.

Thanks just the same.

--
Scott
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Gmane