Connection closed by foreign host really suggests that the connection
could be established, but NSClient closes it immediately. Check for a
typo in the allowed host configuration.
The rest is just general networking troubleshooting, in case I'm wrong
on that.
First, a stupid question: you say that netstat shows that port 12489 is
listening - but is it listening on the right interface/IP address? It
may only be listening on 127.0.0.1 - localhost.
Can you ping from the Linux host to the Windows machine? If you can't,
it's a network connectivity issue. Check cables, routers etc.
While you are at it, also check that you are using the correct DNS name,
and that it maps to the correct IP address. I've sometimes connected to
the wrong workstation by accident.
If you CAN ping from the Linux host to the Windows machine, try
connecting to port 12489 from the Windows machine itself.
Try both connecting to localhost, and to the IP address of the windows
machine.
If either one of these succeed, double-check that there really is no
firewall on the Windows machine.
Also try connecting to port 12489 from another workstation connected to
the same network switch. If that succeeds, there might be a
router/firewall somewhere in your network that blocks this traffic.
44kbps wrote:
Hi people of the world :P
I'm just running the NSclient on a Windows machine. I got the default
configuration of the NSC.ini but I have an error in the nagios:
Connection refused
I modified the NSC.ini to run the client on the 12489 port, and I add
the IP of the nagios server on allowed host.
I have no information about the client version, the cpu or some
information in the nagios.
I run a netstat in the windows machine and I get the listening port at
12489 but when I try to connect from telnet on the linux (nagios) machine
I've got a Connection closed by foreign host.
I scan the machine with the nmap. It don't show the 12489 open of
filtered.
What can be wrong?
In the Windows machine there are no firewall.
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