26 karma · joined January 18, 2023
May be a simple question: How are you able run nginx and open http:// localhost without it making any changes to the firewall. Can go on and on.
docker listens on port X. Accessible on machine. Also accessible from outside regardless of ufw.
No amount of time and experience will make you think that configuring a software to listen on a port will automagically poke a hole in the firewall.