Ufw is just another program (as i was told) that configures your firewall.
Whether you use ufw or firestarter or any of the other apps to configure the
firewall, the result will be the same- you have a configured firewall. The apps
do not need to be active for the firewall to work. Once it is configured, you
would only need to run one of these programs if you want to change settings of
the firewall.