I don't know enough to fix this right off the bat. Here's what I would look for to better understand the issue.
Make sure the DWH is listening on all IP addresses. Run "netstat -ano" and see what process is listening on TCP/8080 on each IP.
Try just hitting http://<FQDN>:8080/. I haven't needed to append the reporting/ directory in the past. Also, try it with a non-IE browser. Firefox will often provide a more informative error message.
There are other things to look at too, but that should get you started.
Jim