ufw is a command line application and as such should be run from a terminal. The app center showing a grayed out button is probably because ufw (intentionally) doesn't provide a desktop file. This is not a bug in ufw. The gallery shows a few example commands of how to use ufw in a terminal.
ufw is a command line application and as such should be run from a terminal. The app center showing a grayed out button is probably because ufw (intentionally) doesn't provide a desktop file. This is not a bug in ufw. The gallery shows a few example commands of how to use ufw in a terminal.