Introduction In the first part of this article, I’ve shown the most common (so far) methods of doing packet filtering in Linux. This part of the article is all dedicated to cover a brief introduction of eBPF and XDP, being used to packet filtering. I’ll not cover the usage of eBPF to monitor resources and performance, …

Introduction So you’ve got a brand new Linux distribution. You start your Kubernetes distributions, and decide for a specific CNI that provides network policies. Then you figure out that something is (or is not) working, does an iptables -L to check what is going on and boom: where are all my iptables rules? Worst of …