Docker Host Network Access Guide

By default, Docker cannot directly access the host machine’s network because Docker containers run in an isolated network environment. However, there are ways to enable Docker containers to access the host machine’s network.

1. Utilize host network mode: When running a Docker container, specify the use of host network mode by adding the –network=host parameter. This will allow the container to share the host machine’s network namespace, granting direct access to the host machine’s network. For example:
2. Run the docker container with your_image using the host network.
3. Using port mapping: By using the -p parameter when running a Docker container, you can map the container’s port to the host machine’s port, enabling communication between the container and the host machine. For example:
4. Run the Docker image “your_image” and map port 8080 on the host machine to port 80 on the container.
5. When running a Docker container, it will default to using the bridge network mode, which assigns the container a unique IP address and allows it to access external networks through the host machine’s NAT. You can enable container access to the host network by setting port mappings or configuring related settings in the Docker configuration file.

Please be advised to exercise caution when accessing the host machine network using the methods mentioned above to ensure that only necessary ports and permissions are open, in order to avoid potential security risks.