Connection refused

[Surajit Mukherjee]

Hi Kevin,

The output netstat -anb looks like this.

TCP    0.0.0.0:****   0.0.0.0:**      ESTABLISHED     ****
 [putty.exe]


Where in left 0.0.0.0:**** is my windows server along with port and the
right is the Linux server along with port. Is it not correct?

Surajit 
 

-----Original Message-----
From: Kevin Keane [mailto:subscription at kkeane.com] 
Sent: Friday, May 08, 2009 1:56 PM
Cc: Nagios User list
Subject: Re: [Nagios-users] Connection refused

What connection, exactly, do you show as "established" with netstat -an?

It can't really be the one you are talking about, because that never 
connected.

In any case, you would want to look for LISTENING rather than 
ESTABLISHED in the output for netstat -an. The local address on the left

should say something like 0.0.0.0:xxxx (where xxxx is the port number). 
If it says 127.0.0.1 then NSClient++ is not listening on the Ethernet
port.

If you don't see an entry that listens on the correct port, then 
double-check that NSClient++ is running.

If you do see an entry to listen on the correct port, try running nestat

-anb . This will tell you which program is actually doing the listening.

If it isn't NSClient++, you found your culprit. That's not likely,
though.

If netstat -anb shows NSClient++ as listening correctly, you almost 
certainly have a firewall issue.

Surajit Mukherjee wrote:
> Andy,
>
> I am unable to telnet to the port from the Nagios server.
>
> I checked netstat -an and the connection is established. I am able to
> telnet from windows server to the Linux server.
>
> Surajit 
>  
> -----Original Message-----
> From: Andy Shellam [mailto:andy-lists at networkmail.eu] 
> Sent: Friday, May 08, 2009 12:03 PM
> To: Surajit Mukherjee
> Cc: Nagios User list
> Subject: Re: [Nagios-users] Connection refused
>
> Surajit,
>
> Is the service actually running on that server?  Can you telnet to the

> NSClient++ port manually?
>
> Regards,
> Andy
>
> Surajit Mukherjee wrote:
>   
>> I am getting "Connection refused" status information on a Windows
2003
>> Server that is using NSClient++.  Out of the 7 Windows server I have
>>     
> in
>   
>> Nagios 3.0.6, this is the only server giving me that error
>>
>> ** **
>>
>> **Cheers,**
>>
>> **Surajit**
>>     
-- 
Kevin Keane
Owner
The NetTech
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