Hi. On my CentOS 7, I received an error. I guess it is related to the Firewall. How can I solve it, please?Error: Failed to restart firewalld.service: Unit firewalld.service failed to load: No such file or directory.
This error means that the firewall is not installed on your server. To install a firewall on the server, run the following commands:
yum -y install firewalld
systemctl enable firewalld
systemctl restart firewalld
7 days a week, 24 hours a day