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UFW (Uncomplicated Firewall) really makes setting up the firewall pretty much dead easyis a firewall software package that is easy to use initially and yet flexible enough for power users.
Install ufw if it not already installed,
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Here are some more useful ufw commands,
sudo ufw deny 443 # Disables and leave the entry in the status. Useful to a port you leave on and off sometimes.
sudo ufw delete 443 # Actually delete the firewall rule entry.
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How I can put comments in the firewall rules and have it show up in the ufw status? Using applications.d. Will add details from here,http://manpages.ubuntu.com/manpages/jaunty/en/man8/ufw.8.html
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