A beginner's guide to Firewalld basics that will help you learn how to open ports, manage zones, use rich rules and more.| Putorius
Learn how to use IPTables in place of FirewallD on a Red Hat 7 or CentOS 7 system. Disable firewalld and use iptables instead.| Putorius
Learn the basics of iptables including opening ports, using chains, and saving iptables configuration.| Putorius