In case you get the following warning in the security check service:
It is possible to guess the remote device type. It is possible to guess the remote operating system. The name of the Linux distribution running on the remote host was found in the banner of the web server.
You should do:
sudo vi /etc/apache2/apache2.conf ServerSignature Off ServerTokens Prod
sudo a2enmod cgi sudo a2enmod info sudo a2enmod rewrite