26c64369__limit_access_to_my_web_pages___Explanation
[Variable] AuthUserFile [Explanation] 
This variable references the .htaccess password file location. This password file should not be in a directory accessible by a web browser (that is, it should not be in your www directory or any subdirectory of your www directory). Though you can name the file anything you wish, UITS recommends a file name preceded by a period, such as .file-password.
How do I limit access to my web pages?
Explanation