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Are your Docker containers connecting to the network (eg using ipvlan or macvlan)? The default bridge network driver doesn’t expose the container publicly unless you explicitly expose a port. If you don’t expose a port, the Docker container is only accessible from the host, not from any other system on the network.
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They are Only in my docker bridge networks and have a few published ports
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If you don’t want the Docker container to be accessible from other systems then just don’t publish the port.
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