Installing IIS Application Request Routing
You can download IIS Application Request Routing from the Microsoft website. After installation, follow these steps:
- Open IIS Management.
 - Select your server (on the highest level in the navigation pane).
 - Open Application Request Routing Cache in the center pane.
 - In the Actions menu (right), choose Server Proxy Settings.
 - Activate Enable proxy.
 - Press Apply in the Actions pane (right).