Manage iptables firewall for Docker/Kubernetes

This article describes my experiences to apply iptables firewall for Docker/Kubernetes hosts.

My solution is based on this article so it’s not a new idea. But I write it down as I still see comments here and there about the troubles in making iptables playing well with Docker.

When moving my most workload into Kubernetes clusters, I found the same solution applies very well as the host level firewall to block undesired access.

Traditional iptables firewall