I have an ftp server which is used by some clients to update and exchange files they are working on.
There are three folders on the root level of the ftp server, my boss wants me to password protect all of them and have different passwords for each folder.
Can I do this by setting up an htaccess file or does that kind of password protection technique only work when you actually publish a website? Here the files and folders will only be accessible through an ftp client, there is no website...

Anyone has any suggestion?