Password Protect A Web Page

Accessing and Restricting Access to your Website

[needs to be worked out more]in order of difficulty

An index.html in all directories: put an empty textfile called index.html in every directory
Use of the '*' as password for user
Use of the trailing '/' at the end of the path in an Alias Make Use of an Alias
Use of .htaccess files

See How To Enable PHP to run PHP driven websites
See How To Host a Web Site
See How To Make Use of an Alias