Kubernetes Node Firewalling from the Inside Out

Explore host network firewalling in Kubernetes nodes through this informative conference talk. Delve into the limitations of Kubernetes API in managing host networking policies and discover alternative approaches to secure node host networks. Learn about contemporary implementations that offer in-cluster host network firewalling, focusing on Talos as a Kubernetes distribution and Cilium as an advanced CNI. Gain insights into declaring host firewalling as resources within the cluster, moving beyond traditional methods of using bash scripts for Iptables and Firewalld. Understand how to leverage declarative resources for more effective and manageable host network security in Kubernetes environments.