LXer: How to Set Up a Firewall with UFW on Ubuntu 20.04
 

Published at LXer:

A firewall is a tool for monitoring and filtering incoming and outgoing network traffic. It works by defining a set of security rules that determine whether to allow or block specific traffic. This article describes how to use the UFW tool to configure and manage a firewall on Ubuntu 20.04. A properly configured firewall is one of the most important aspects of overall system security.

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