I believe I'm missing something so basic, that the instructions don't tell me how to deal with it. I need a basic log-in and I found php-login-minimal here.
I have this installed on a windows server and everything works as advertised, except that my files are not secured. My PHP files are in c:\php which is where I installed these files. When I go to index.php I can log-in. However, I can also access all my other files without logging in, simply by going to the URL.
What very basic functionality (or setup) am I missing?