I apologize in advance if i have not properly posted my question, this is my first time here
I have a new computer with a clean install of Windows 7 pro x64 and have installed SQL server 2008 R2 express SP1 to run a particular application. The application is designed to connect using an IP address embedded within the application itself. The application runs perfectly here in my local network with the embedded IP address set to my server machines local IP address. The app runs as expected on all 4 machines connected to my local network. When I try and run the app from a remote machine, with the embedded IP address modified to my public (WAN) address i cannot connect. The application reports back to me that "connection to the server failed"
SQL server is running
SQL server browser is running
TCP/IP enabled
Allow remote connections enabled
Authentication = Mixed
ISP is NOT blocking any ports.
Router has all necessary ports forwarded ( even went as far as DMZ for testing purposes)
All firewalls and AV turned off
I have been diligent in my searching this forum as well as others and have tried many of the ideas posted as potential fixes to problems others have posted to no avail.
I would be enormously grateful for some help resolving this issue
Thanks in advance