LeechGuard - Stop hotlinks with IIS and ASP.NET
Many web sites suffer from others directly linking to their image, video and other content. This practice is called often called leeching, hot-linking, or inline-linking and causes wasted bandwidth and increased server load to the victim web site. Mike Volodarsky wrote a ASP.NET module that prevents hot linking. It can be used on IIS5 (Windows 2000/XP), IIS6 (Windows Server 2003), and IIS7 (Windows Vista / Longhorn Server).
