Docker Networking Overview

Docker networking refers to the set of technologies and functionalities within Docker that enable communication between containers, between containers and the host machine, and between containers and external networks. It allows containers to interact with each other and with external systems securely and efficiently.

Container networking refers to the ability for containers to connect to and communicate with each other, or to non-Docker workloads.

Containers have networking enabled by default, and they can make outgoing connections. A container has no information about what kind of network it’s attached to, or whether their peers are also Docker workloads or not. A container only sees a network interface with an IP address, a gateway, a routing table, DNS services, and other networking details. That is, unless the container uses the none network driver.

👉 Here are the key points to understand about Docker networking:

1. Container Communication: Docker networking enables containers running on the same host to communicate with each other using IP addresses or DNS names. This communication can be established within a single Docker host or across multiple Docker hosts in a cluster.
2. Network Isolation: Docker networking provides network isolation between containers, ensuring that each container has its…