Windows 7 test no internet

Hi, I often want to test my application in a “no internet” situation because I use house ads and I need to test how my ad library works/bugs out in various scenarios. I have gone into windows firewall with advanced security(on Admin mode) and make a new inbound rule for Corona SIMULATOR (not debugger) to block all connections. However, my simulator still has internet. I know I can turn off my wifi/unplug ethernet but it would be easier if I could just do it via windows firewall settings. Any way I can do this since making an inbound rule seems to not work?