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Context: Docker bypasses all UFW firewall rules (lemmy.world)

submitted 1 year ago* (last edited 1 year ago) by qaz@lemmy.world to c/programmer_humor@programming.dev

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Docker docs:

Docker routes container traffic in the nat table, which means that packets are diverted before it reaches the INPUT and OUTPUT chains that ufw uses. Packets are routed before the firewall rules can be applied, effectively ignoring your firewall configuration.

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[–] domi@lemmy.secnd.me 45 points 1 year ago

My impression from a recent crash course on Docker is that it got popular because it allows script kiddies to spin up services very fast without knowing how they work.

That's only a side effect. It mainly got popular because it is very easy for developers to ship a single image that just works instead of packaging for various different operating systems with users reporting issues that cannot be reproduced.