How to configure Windows NRDS client to work with NagiosCore

[rkennedy]

You need to port forward 84.56.x.x:80 to 192.168.9.x:80 in order for it to be accessible from the WAN network.

[hart09]

It is accessible from WAN. Again, from a remote Windows client I'm able to open a browser and go to 84.56.x.x:80 or 84.56.x.x/nrdp. It's not a Firewall issue for sure...

[rkennedy]

In a previous post you said -

What I think it is, Nagios XI is listening only on 192.168.9.xxx.xxx IP. I just can't find where I can edit this? So it only accepts headers addressed to 192.168.9.xxx.xxx IP. From the screenshot attached you can see that it accepts NRDP API only on 192.168.9.xxx

I'm confused what the issue is at this point, can you please clarify?