🔥 Firewall Tools Overview

iptables vs firewalld vs UFW

iptables is powerful, but using it is like writing assembly by hand — powerful but painful. That's why more user-friendly tools exist.

Tool	Target System	Difficulty	Features
iptables	All Linux	⭐⭐⭐ High	Low-level, flexible, but verbose commands
ufw	Ubuntu/Debian	⭐ Low	Simplest, great for beginners and simple scenarios
firewalld	CentOS/RHEL/Fedora	⭐⭐ Medium	Supports zone concept, feature-rich

💡 Tip: 💡 How to choose? Ubuntu users use ufw, CentOS users use firewalld, and use iptables when you need fine-grained control. They all call iptables/nftables under the hood.