Jack Wallen shows you how to extend the flexibility of the CentOS 7 firewall with firewalld zones. Your firewall is a crucial component from preventing unwanted people from gaining access to your data ...

I am confused, I have to use firewallD or Iptables. Firewalld sits on top if iptables, so they're not in competition. It's probably easiest to just start with the official documentation, but for a ...