So I know where to find this info later when I have to look it up. Again.

Basic stuff:

From the man page.

ufw allow in on eth0 from 192.168.0.0/16
ufw allow out on eth1 to 10.0.0.0/8
ufw route allow in on eth0 out on eth1 to 10.0.0.0/8 from 192.168.0.0/16
ufw limit 2222/tcp comment 'SSH port'

Note form the man page:

ufw allow 8080/tcp
ufw allow proto tcp from 192.168.17.11 to 192.168.17.8 port 8080

On ubuntu 14.04 rules are saved in:

/etc/ufw     # system rules
/lib/ufw     # user rules