Disable Apache folder listing for each folder

1. enable .htaccess file override
edit file /etc/httpd/conf/httpd.conf
search "htaccess", changed below setting to
AllowOverride All

2. go to folder that will disable folder listing
create file .htaccess
add this content:
IndexIgnore *

3. Restart Apache
service httpd restart

Reference:
http://www.cyberciti.biz/faq/apache-web-server-prevent-directory-folder-listing/
http://www.cyberciti.biz/faq/apache-htaccess/