I work for a university and we want Mozilla 17 in our computer labs. We have GPO on Windows 7 to blocks access to our C drive so students can't see secure files, but mozilla ignores it. Is there a way to disable typing these things such as, "file://C:/Windows" or "C:\" that gives access to the files?
I have tried a few add-ons but all they do is hide the links to the folders, but you can still execute and open files. Also I have added the following to user.js:
Normally you would put a hostname with protocol in the "sites" setting to limit what that site may do. You are blocking "file:///" from loading links, but that is only a protocol, not a site. I think that is the problem, anyway.