With an .htaccess file, you will determine how the web server that deals with the requests to your websites have to act in different situations. This is a text file with directives that are executed when someone tries to open your site and what happens next will depend on the content of the file. As an example, you may block a particular IP address from accessing the website, which means that the server will decline the visitor’s request, or you can redirect your domain name to some other URL, so the server will redirect the visitor to the new web address. You could 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 well-known script-driven applications, including Drupal™, Joomla™ and WordPress, use an .htaccess file to work correctly.