Host is not allowed to talk to us!
Grant Lowe
glowe at sbcglobal.net
Fri Dec 12 20:39:40 CET 2008
Hi Andy,
The remote nrpe client (xxx.xxx.xxx.xxx) is on a DMZ at work, and the nagios server is internal. You're saying the remote nrpe system should not be able to accept requests when queried from the nagios host. There shouldn't be any port scanning going on. I had the networking folks open up port 5666, so I thought that would take of that. What am I missing?
Thanks, Andy!
----- Original Message ----
From: Andy Shellam <andy-lists at networkmail.eu>
To: Grant Lowe <glowe at sbcglobal.net>
Cc: nagios-user Mailinglist <nagios-users at lists.sourceforge.net>
Sent: Friday, December 12, 2008 10:45:09 AM
Subject: Re: [Nagios-users] Host is not allowed to talk to us!
Grant,
Are remote checks from your Nagios server to this NRPE client
succeeding? Is xxx.xxx.xxx.xxx one of your own, or an external IP
address? I'm thinking there may be a remote system trying to talk to
your NRPE system that it's not allowing (which is correct.) It could
potentially be some sort of port scanner if your client is publicly
accessible.
Regards,
Andy
Grant Lowe wrote:
> Hi Marc,
>
> Thanks for the quick reply. Yes, I have the correct IP. Also I already have debugging turned on in nrpe.cfg. I have other clients connecting just fine. I just restarted nrpe and I got this message:
>
> Dec 12 09:18:22 nagiosclient svc.startd[7]: [ID 748625 daemon.error] network/cswnrpe:default failed repeatedly
> Dec 12 09:19:25 nagiosclient nrpe[643]: [ID 601491 daemon.notice] Starting up daemon
> Dec 12 09:19:25 nagiosclient nrpe[643]: [ID 627629 daemon.notice] Warning: Daemon is configured to accept command arguments from clients!
> Dec 12 09:19:42 nagiosclient nrpe[649]: [ID 381997 daemon.error] Host xxx.xxx.xxx.xxx is not allowed to talk to us!
>
> We're not using IPV6, so I guess that's not a problem. Other thoughts?
>
>
>
> ----- Original Message ----
> From: Marc Powell <marc at ena.com>
> To: nagios-user Mailinglist <nagios-users at lists.sourceforge.net>
> Sent: Friday, December 12, 2008 8:58:42 AM
> Subject: Re: [Nagios-users] Host is not allowed to talk to us!
>
>
> On Dec 12, 2008, at 10:23 AM, Grant Lowe wrote:
>
>
>> Hi all,
>>
>> I'm getting a message from the syslog of my nrpe client that says:
>>
>> Host xxx.xxx.xxx.xxx is not allowed to talk to us!
>>
>> In the nrpe.cfg file I have the IP address of the nagios server:
>>
>> allowed_hosts=127.0.0.1,172.20.40.45
>>
>
> The code around this error is very straightforward and looks like a
> simple address match. Are you sure you have the correct IP and nrpe
> has been restarted? Are you using IPV6 locally?
>
> In any event, putting nrpe into debug mode and watching /var/log/
> messages should be informative.
>
> --
> Marc
>
>
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