Implement/configure a Web Service.
Configure a site http://systeml. domain11.example.com/ on the system1, then execute the following steps:
(1) Download file from http://rhgls.domain11.example.com/materials/station.html and rename this files index.html, don’t modify the file contents;
(2) Copy the file index.html to your web server’s DocumentRoot directory
(3) Clients from domain group3.example.com can access to this web service
(4) Clients from domain my133t.org deny access to this web service

Please see explanation

Explanation:

systemctl restart firewalld