I have a weird setup on a server we host: the site hosts both live and test versions of its sites, set up in two different folders, D:\Live Sites, and D:\Test Sites. What would be the best way to block all except four specific IPs from accessing any of the sites inside D:\Test Sites?
Is there a way to do this while delivering a specific error page to incorrect IPs?
The server is Windows Server 2008 R2 with IIS7.5