i just found this too https://help.ubuntu.com/community/UFW

home64@ubuntu64:~$ sudo ufw default deny
Default incoming policy changed to 'deny'
(be sure to update your rules accordingly)
home64@ubuntu64:~$ sudo ufw enable
Firewall is active and enabled on system startup
home64@ubuntu64:~$ sudo ufw status
Status: active
home64@ubuntu64:~$ sudo ufw status
Status: active
home64@ubuntu64:~$ sudo ufw status
Status: active
home64@ubuntu64:~$

Any technically advanced people here able to confirm my firewall is now working
and theres nothing else for an ordinary user to do?? There's a lot of reading
here and I can remember the days of Mandrake where I just clicked enable
firewall in the MCC.