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Hello, and welcome to Configuring a Firewall.

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In this lesson, you'll learn how to configure a Linux firewall.

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I'll first explain about network ports which are an essential component of Linux firewalls.

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Next, I'll explain how firewalls are working in general.

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And after that, we can zoom in and talk about the most common Linux firewall solutions,

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UFW, Firewall-D, and IP tables.

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You'll also learn about NF tables, which is the latest firewall solution that has been

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introduced to Linux.

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And as always, this lesson ends with a lab as well as lab solution.