Hi Phil - thanks for the prompt response.
I have a new finding. I now get a response when accessing the http page via command line from the server ( using the wget -p http://localhost:8080 command), but can't access it from any of our other servers running in the same LAN. So now I no longer think this is an issue with the Mango instance, but rather a network/firewall issue most likely.
I will look further into it and report back with my findings after the weekend. Thanks again for the prompt response!