How do I configure my firewall for cPanel & WHM? – cPanel
https://support.cpanel.net/hc/en-us/articles/360048542734-How-do-I-configure-my-firewall-for-cPanel-WHM
WEBHere are the steps to open the ports. For CentOS 7, CloudLinux 7, and RHEL 7 firewall management. Firewalld packages should be installed by default. In case it's not available, you can install it by running the following command: yum install firewalld -y. In cPanel, we have an available script that will apply all the required cPanel firewall rules.
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