If you wish to keep some content hidden from the public eye, you can switch on password protection for a certain folder - either the main website folder or a different one below it. If this feature is activated, a pop-up shall appear each and every time somebody attempts to open the folder in question or clicks on a direct link that goes a few levels deeper, so login info will be required for www.domain.com/folder/image.jpg if you have protected just the domain.com folder. When the credentials aren't valid, a “403 Forbidden” message shall appear and there isn't any way of getting around this restriction, so you can be certain that nobody shall be able access the protected content. The function may be useful in numerous cases - if only certain people must be able to see certain files, if you are developing an Internet site and you don't want people to see it before it is completed, etc.