Why Linux Firewalls Are Moving From iptables to nftables
For many years, Linux firewall management was dominated by iptables. It became the standard tool used by system administrators to protect servers, networks, and production environments.
However, modern Linux systems introduced a new firewall framework: nftables.
Designed as the successor to iptables, nftables provides a cleaner architecture, improved flexibility, better performance, and a unified approach to managing IPv4, IPv6, ARP, and other network protocols.
Today, nftables is the recommended firewall framework for modern Linux distributions and an important skill for system administrators, DevOps engineers, and cybersecurity professionals.
In this article, we will explore how nftables works, why it replaced iptables, and how to create a secure Linux firewall configuration.
What is nftables?
nftables is the modern Linux packet filtering framework built into the Linux kernel through the Netfilter subsystem.
It replaces several older firewall management tools:
- iptables
- ip6tables
- arptables
- ebtables
Instead of managing separate firewall systems for different protocols,...
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