ufw

Problem During development using docker-compose on Ubuntu, I realized something weird was happening with my UFW. It just did not work as it should. Publishing ports in docker-compose just overrid any UFW settings, and I was no longer able to use UFW to control the traffic. You could say that if you expose a port, the purpose is to keep it open, but sometimes I still want to use a firewall to open/close port access, without disturbing the running services....

This is a short list, largely borrowed from digitalocean Log in with your provided root credentials ssh root@123.123.123.123 Create a user (just hit enter and skip the info if you want) adduser username Enable the user to use sudo usermod -aG sudo username Disable root SSH login nano /etc/ssh/sshd_config Modify the file like below. Pick a high port number between 1024 and 34627. Hit ctrl-x, ‘Y’ and finally hit enter to save....