With an .htaccess file, you will specify how the server which deals with the requests to your Internet sites should act in a variety of cases. This is a text file with directives that are executed when somebody tries to open your Internet site and what happens next depends on the content of the file. As an illustration, you may block a particular IP address from opening the website, and the server will decline the visitor’s request, or you can redirect your domain to some other URL, so the server will redirect the visitor to the new web address. You can also use tailor-made error pages or secure any part of your Internet site with a password, if you place an .htaccess file inside the correct folder. Many widely used script-driven apps, such as Joomla™, WordPress and Drupal™, use an .htaccess file to work properly.