UFW Firewall on Ubuntu

How to Install UFW Firewall on Ubuntu with GUI?

The objective is to show you how to enable and disable firewall on Ubuntu 18.04. By default the UFW is disabled. You can check the status of your firewall by executing the following Linux command given below.

Check a current firewall status Command:

$ sudo ufw status

Enable Firewall Command:

$ sudo ufw enable

Disable Firewall Command:

$ sudo ufw disable

Install UFW via graphical user interface Command:

$ sudo apt install gufw

Key Terms:

Firewall
Open Source Software
UFW Firewall on Ubuntu

Increase swap size on Ubuntu

The recent releases of Ubuntu use swap file instead of the traditional swap partition. The swap file is simply a file under the root which is used as swap to share the burden on the RAM.