I have built a shiny new XenApp 6 farm. In the farm I have a license server, a WI, SG, and one XenApp server. Each role is on its own server. The secure gateway is in the DMZ and the web interface is inside the firewall. This exact same configuration works perfectly on our ancient MPS 4 farm but for some reason I can't get the WI to work externally with the new farm. I get " Internet Explorer cannot display the webpage" when I try to access it externally. Internally it works fine. What am I missing?