404 Image Redirect

Redirecting Ad Images to a standard Image.

[beerfuzz47]

Working on a Windows 2000 Server and IIS. I have setup a 404 error to redirect web page requests that are not found.

The Source for the Redirect is sort of an anti-spam / Porn blocking scenario. First we have setup DNS entries to redirect forbidden domains to a single web server(Example: Microsoft=192.168.85.21) There for if you type in www.microsoft.com you get redirected to a 404 page on the Web Server 192.168.85.21. This includes www.microsoft.com/stuff/things.htm. This will cut down on traffic even going to our firewall in the first place. The second part is that because of this if you go to specific web pages such as yahoo.com and there are links to images that point to www.microsoft.com/images/stuff.jpg. These images show up as X's on the web page. How can I redirect these to a single unified image. I would like to provide the end users of a way to know when it is from our side that the image is being blocked or from the side of advertisement.

Please help or ask questions. Thanks.