With an .htaccess file, you'll define how the server which manages the requests to your websites must act in various cases. This is a text file with directives that are executed when somebody tries to open your website and what happens next depends on the content of the file. For example, you can block a specific IP address from accessing the site, and the server will decline the visitor’s request, or you can redirect your domain name to another URL, so the server will direct the visitor to the new web address. Also you can use personalized error pages or secure any part of your website with a password, if you place an .htaccess file inside the correct folder. Many popular script-driven applications, including Joomla™, Drupal™ and WordPress, use an .htaccess file to work properly.