How to install the Plesk Firewall component?
In Plesk for Windows Server, Plesk Firewall comes pre-installed. Plesk Firewall appears under the Security section in Tools & Settings.
To install Plesk Firewall in Plesk for Linux, click on one of the following sections and follow the steps:
Note: On CentOS 8, first firewalld must be disabled and the iptables package must be installed:
# systemctl stop firewalld && systemctl disable firewalld && dnf install iptables
To learn more about managing firewall rules in Plesk, visit this KB article.