<p>I use Ubuntu and I don't need a firewall at home. Why? because my linksys router already provides me with a firewall against the bad guys. In addition, if you port scan a Ubuntu PC you will find one or two ports open assuming you didn't install any additional servers. </p> <p>As for malware Linux is immune because you will download all your software from the Ubuntu store. As for spyware, even visting the worst sites imaginable on the Internet will not cause Linux to get any spyware. Yes, no one cares about getting into a Linux box. Not that it is impossible but for now it is small potatoes and no one cares. </p> <p>You really are in a secure operating system. Enjoy it while it lasts. </p> <p>CBO</p>