I run a project-based ftp site (IIS and server 2003) for my company where each project has it's own folder and username ( a local windows user account). I use NTFS to keep each account from accessing any other folders but their own. Unfortunately, they can still see the other folders. This of course, is a "feature" of windows networking that we have always dealt with by implementing "Access-Based Enumeration." (i.e. if you don't have rights assigned to a folder, you don't see the folder).
I'm not having much success with it however. I 'm asking on the off-chance that someone else has a similar setup and maybe can confirm whether it can work, or not with FTP clients.
Or maybe I should take this as a sign to finally move beyond FTP as a way to transfer client files?