With an .htaccess file, you will define how the web server that handles 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 example, you could block a certain IP address from opening the Internet site, and the server will decline your visitor’s request, or you can redirect your domain to an alternative URL, so the server may redirect the visitor to the new web address. Also you can use customized error pages or secure any part of your website with a password, if you place an .htaccess file inside the correct folder. Many well-known script-driven apps, such as WordPress, Drupal™ and Joomla™, use an .htaccess file to function properly.