Docker Basics (Part 5) : Docker Network Management

Docker's networking capabilities play a crucial role in connecting containers and facilitating communication within a multi-container environment. Let's explore essential Docker network commands and understand the nuances of network types.

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Managing Docker Networks

List All Networks

docker network ls

Use this command to get an overview of all Docker networks currently available on your system.

Create a Network

docker network create <network name>

Create a custom Docker network with a specified name. Custom networks offer flexibility and control over container communication.

Remove a Network

docker network rm <network name>

Remove a Docker network by specifying its name. This cleans up resources associated with the network.

Using a Network while Running

docker run --network host <image>

When running a container, utilize the --network option to connect it to a specific network. The host option allows the container to share the network namespace with the host.

Get Details of a Network

docker network inspect <network name>

Retrieve detailed information about a specific Docker network, including its configuration and connected containers.

Inbuilt Network Types

Docker provides three inbuilt network types: Bridge, Host, and None.


  • Default: Containers are connected to a bridge network by default.

  • Port Mapping: Required to expose container ports to the host.


  • Default: Not the default; it shares the host network namespace.

  • Port Mapping: Not needed; containers share the host's network stack.

Custom Network

Custom networks offer flexibility and control over container communication. You can use custom networks to isolate services, enforce security policies, and more.

  • Ping between Containers: Containers in the same custom network can communicate using container names or IDs.

  •     ping <container name or ID>
  • Isolation and Control: Custom networks provide a controlled environment, allowing you to tailor communication between containers.

Understanding Docker networking is essential for optimizing container communication, enforcing security, and orchestrating complex multi-container setups. Whether you leverage default bridge networks or create custom networks, Docker's networking capabilities empower you to build robust and scalable containerized solutions.

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