text: The magic is in the line beginning with AssignUserId. With this option, we're telling Apache/PHP to run as the following user/group.
  This step is quite simple; just open Apache's configuration file by executing the following command as the root user:
  Find "ServerTokens", and change the option after it to "ProductOnly". This tells Apache to only reveal that it's "Apache", instead of "Apache/2.2" or something similar.
  Now that we've secured the server, we must restart the Apache server. Do this by running the following command as root or with sudo:
  These are just a few steps you can take to secure your server. Once again, even if it's someone you trust that's hosting a website on your server, you should plan to protect it. In the scenarios above, even if a user account is compromised, the attacker won't have gained access to the entire server.