I'm running CF 9 Enterprise in a 3-tiered system with CF on the application servers (two for load balancing). This is currently in a test environment but I need to go live with it soon. I'm trying to access the app servers from the web server, IIS 7, am not sure of the most efficient way to accomplish this. Configurations are as follows: All 4 servers run Windows Server 2008 Web Edition The Web server uses IIS 7 The Applications servers are running CF Enterprise 9 The Database server runs SQL Server 2008 I have no trouble communicating between the app servers and the db server. The issue is communicating between the web server and the app servers. Thanks in advance for any help, Dave