With an .htaccess file, you will determine how the web server that deals with the requests to your web sites should act a number of situations. This is a text file with directives that are executed when somebody tries to open your site and what happens next will depend on the content of the file. As an illustration, you may block a specific IP address from opening the website, so the server will decline your visitor’s request, or you can redirect your domain name to an alternative URL, so the server may direct the visitor to the new web address. You may also use customized error pages or protect any part of your site with a password, if you place an .htaccess file inside the correct folder. Many well-known script-driven applications, including Drupal™, Joomla™ and WordPress, use an .htaccess file to operate correctly.