Install Grafana on Server with Icinga2

We have a server currently running with Icinga2 and wanted to add some data visualisation to it.
I can install Grafana using the guides and it’s installed fine and I could connect to port 3000 but because this server is in a DMZ I would need to request the ports to be open.

Icinga is running under

How can I use grafana to work under

Thanks a lot

You would have to set up a reverse proxy such as nginx or apache2. Most likely you already use one of them to make icingaweb2 available. There is a bit about how to set up reverse proxies in our documentation.