Docker network – Why docker container responds on

I start up a docker container with a service that runs on port 9324:

docker run -d -p 9324:9324 vsouza/sqs-local

I imagine that this container will run o bridge0 network. So If I run: docker network inspect bridge, I can see that this container is on ip: "IPv4Address": "".

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  • One Solution collect form web for “Docker network – Why docker container responds on”

    The -p 9324:9324 tells docker to publish the 9324 port in the container on the host at port 9324. The actual mechanics of that are with some iptables rules to do a masquerade and a dnat on that port (for outbound and inbound traffic respectively). This is frequently done since you don’t always know the ip of each container, and may have your firewall rules configured to block direct access to the container (which you don’t in your environment).

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