How to disable directory indexing from apache2 when going to the server's root?
Edit your apache2 configuration file which normally is on the dir: "/etc/apache2/httpd.conf".
Add the following or edit if your already have some configurations for the default web server dir (/var/www):
<Directory /var/www> Options -Indexes AllowOverride All Order allow,deny Allow from all </Directory>
This will disable the indexing to all the public directories.