1. Disable directory listing in Apache Configuration
Open the apache configuration file /etc/httpd/conf/httpd.conf.
vim /etc/httpd/conf/httpd.confFind the content below in a file and modify the highlighted content.
Options Indexes FollowSymLinks AllowOverride None Require all granted
When finished, it should look like this.
Options -Indexes +FollowSymLinks
AllowOverride None
Require all granted
Restart the Apache service by using below command:
systemctl restart httpd
2. Restrict Directory Access Apache
Add the below highlighted lines in your apache virtualhost to restrict any directory access.
<Directory "/var/www/test/restricted_directory"> order deny,allow deny from all #it will block access for all
</Directory>
Restart the apache service by using below command.
systemctl restart httpdOptional: If you want to allow only for particular ipaddress.
<Directory "/var/www/test/restricted_directory"> order deny,allow deny from all #it will block access for all Allow from your-ipaddress #it will allow for your ipaddress </Directory>
3. Make configuration files inaccessible
Add the below line in your apache virtual host to make directory inaccessible or invisible.
RedirectMatch 404 (file_contain_important_data.html|composer.lock|composer.json|.htaccess)
Note: you can add multiple files in same command.
Restart the apache service after making changes in virtualhost always.
systemctl restart httpd 
By using above tutorial we have stopped indexing in our website, restricted directory access and make configuration files inaccessible for public.
Please Drop Comment if you faced any issue at any point, I will try to help asap