Exploring Docker Networking Features

In this chapter, you will start with exploring Docker supporting networks and learn the default Docker bridge networking environment for experimenting with containers networking setup. Next, you will explore user-defined bridge networks for experimenting with customized networking environments. It helps you to experiment with Docker networking options for quickly setting up your experimental networks. Later, you will be learning how to use Docker Internet Protocol (IP) addressing and Domain Name System (DNS) services for customizing IP addresses allocation, reserving IP addresses, and assigning simple aliases for your services access. Finally, you will be introduced to the importance of iptables and how Docker is leveraging iptables features for setting up firewall rules for packer filtering, forwarding, and Network Address Translation (NAT) container traffic flows. It helps you to quickly experiment with network security aspects between Docker host and containers.