go to your Network and Connection Sharing
click on 'Local Area Connection'
click on the 'Detail' button and write down the IP, Gateway, and DNS enteries. Close the window.
click on the button 'Properties'
find 'Internet Protocol Version 4' and click on the 'Properties' button
use the IP info from the Detail's windows and enter it as Static IP info. Have the IP ending in 250.
once done change your IP forwarding to IP ending in 250