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Docker TIL: Docker's iptables chains win over ufw 😅If you're relying on ufw or anything similar to route traffic differently than Docker you're going to lose that race every time.

Instead apply your rules to DOCKER-USER directly: docs.docker.com/network/iptabl

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I learned this because one of our QA servers was hit by a ransomware attack (not a huge issue, it's QA after all). We thought we were protected via ufw/firewall, but we were wrong. Here's a video breakdown: f001.backblazeb2.com/file/ams-

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