I have greylog accepting connections only on localhost, and I use apache on the local machine as a reverse proxy to it. This is working fine.
The problem is when I try to setup another reverse apache proxy on another machine to proxy to that proxy. When I access it from this second proxy, I don’t get any errors, I just get a blank page.
When all proxys are setup in the correct way this should work.
I have that in my lab with multiple NGINX - but the kind of server shouldn’t matter. The important part is that you need to set the X-Graylog-Server-URL header on each Proxy to it’s own.