Configuration of the UFW firewall on Ubuntu 20.04

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The following guide describes how to install UFW Firewall on Ubuntu 20.04. Everything is done with a few clicks in the console.

At the beginning we update the packages

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sudo apt update

We install UFW

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sudo apt install ufw

The service status can be checked by issuing a command:

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udo ufw status verbose

Score:

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Status: inactive

We will launch the UFW with the help of a command:

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sudo ufw enable

To unblock a given port or service we issue a command:

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sudo ufw allow NAZWAUSŁUGI

Here are some examples:

SSH:

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sudo ufw allow ssh

Http

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sudo ufw allow http

You can also allow access for a given port along with the protocol. An example below:

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sudo ufw allow 80/tcp

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