When it finally came to the firewall, after realizing I was working with docker containers and my brain said “no more rabbit holes, friend.” Thanks for the information.

Also gufw is just a simple graphical user window that that’s built on top of ufw. I was using VNC when I began learning all this and planned on using gfuw. By the time I finished the guide, I had become comfortable handling everything from the terminal alone. It’s was just kinda there in the guide at that point.

That’s good to know about docker. I ran into issues modifying docker-compose.yml files while a container was up so I just made it a habit to shut containers down before making changes. I can see using pull while a container is up being more important for places concerned about unnecessary downtime though.