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 ...

I kinda need to vent, so bear with me. Usually when troubleshooting firewall issues, looking at traffic passing through a hardware firewall tells you "filtered" or something similar, which should tell ...