this post was submitted on 28 Oct 2023
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Can somebody help me understand the 0.0.0.0 address in docker? (alien.top)
submitted 1 year ago by [email protected] to c/[email protected]
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Basically, I have this doubt, I have some self hosted services in docker where I add the ports like this:
host_port:container_port, so I don't specify the interface, so by default, it is 0.0.0.0.

Somebody recently told me that this is dangerous and that I expose my services to the public internet by doing this. I don't want to do that since I am the only one accessing them so I just use a vpn to access them. So, to try this out, I typed in my browser my public ip alongside the host port I used for one of my services but I cannot access it. This has me puzzled. How's the deal? Am I exposing it? Should I change it?

What are your thoughts? Thanks!

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[–] [email protected] 1 points 1 year ago

Hey! Thanks a lot for your reply! I just have two other questions. First of all, the address is regarding the host right? And that ip should be the static ip of the computer or the 127…?And also, is there a way to put that same ip for all services in the docker compose file or I have to do it for everyone manually? Thanks again!