The WEBSITES > Allow/Deny page allows you to define strict access control rules for the services. Further a request with any violation is allowed or denied based on the settings in this URL ACL and Header ACL. These controls include location checks, form checks, size checks, and content checks both to and from the servers. They can also set landing page and entry controls, and they can provide custom error responses and request redirection.
Barracuda Web Application Firewall