... Directives | ... Apache HTTP Server Version 2.4 . ... Access control refers to any means of controlling access to any resource. ... Access control by host . ... If you wish to restrict access to portions of your site based on the host address of your visitors, this is most easily done using mod_authz_host . The Require provides a variety of different ways to allow or deny access to resources. ... The usage of these directives is: Require host address Require ip ip.address . ...