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Context: Docker bypasses all UFW firewall rules (lemmy.world)
submitted 1 year ago by 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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[–] 30 points 1 year ago

To be fair, the largest problem here is that it presents itself as the kind of isolation that would respect firewall rules, not that they don't respect them.

People wouldn't make the same mistake in NixOS, despite it doing exactly the same.

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