I checked the firewall. It's not the problem. I've tried with an exception and turning it off.
What I don't get is why the GWIA web interface redirects me to GWMon. It's like the monitor hijacks that port when it loads. (Starting the GWIA first then the monitor doesn't change it)

My manager and I both regret our upgrade to 8 and to Linux!
At least the system is up and running now. Hopefully it will stay that way.
I can live with the GWIA web access not working... it just annoys me that it, too, doesn't work.