To Fix The Docker and UFW Security Flaw Without Disabling Iptables English 中文 TL;DR Please take a look at Solving UFW and Docker issues. Problem UFW is a popular iptables front end on Ubuntu that makes it easy to manage firewall rules. But when Docker is installed, Docker bypass the UFW rules and the published ports can be accessed from outside. The issue is: UFW is enabled on a server that provid