Install simple firewall on Ubuntu 14.04 laptop

How do I install simple firewall on my Ubuntu 14.04 laptop? What is difference between Firewall and the proxy setting of the Firefox browser? I am beginner to Linux.

are you sure it is 14.04? that one should be out of date unless you pay for the extended support.


These are 2 unrelated things, which serve 2 different purposes.


Instal Firewall: Open Terminal: sudo apt-get install ufw

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