Netfilter
BPFILTER: the next-generation Linux firewall
BPFILTER is one of the newer features to provide traffic filtering. Learn how it works and why it may replace iptables as the firewall on Linux systems.
Summary
The Linux community has a continuous drive to enhance the GNU/Linux kernel. When we look at network traffic filtering, we moved from ipchains to iptables. More recently we saw the introduction of nftables. Next in line is BPFILTER, part of the development work for the Linux 4.18 kernel. What is BPFILTER? BPFILTER is short for BPF based packet filtering framework. In other words, it is a framework that does packet filtering and is based on BPF.
Beginners guide to traffic filtering with nftables
The replacement of iptables is known as nftables. In this article, we learn to install nftables and configure it, to secure your Linux systems.
Summary
Learn how to use nftables in this introduction guide to the tool. With common examples, frequently asked questions, and generic tips.