Uncomplicated Firewall (UFW) is a program for managing a netfilter firewall designed to be easy to use. It uses a command-line interface consisting of a small number of simple commands, and uses iptables for configuration. UFW is available by default in all Ubuntu installations since 8.04 LTS.^[1] UFW has been available by default in all Debian installations since 10.

GUIs for Uncomplicated Firewall

Gufw (GUI for Uncomplicated Firewall)

GUI for Uncomplicated Firewall
Original author(s)	Gufw Developers
Stable release	20.04.1-1
Repository	git.launchpad.net/ufw
Written in	Python, PyGObject
Operating system	Linux
Platform	GTK
Available in	More languages
License	GNU General Public License
Website	gufw.org

kmyfirewall

Developer(s)	KLajos et al.
Repository	git.launchpad.net/ufw
Operating system	Linux
Platform	Qt
License	GNU General Public License
Website	launchpad.net/ufw

Gufw is intended to be an easy, intuitive graphical user interface for managing Uncomplicated Firewall. It supports common tasks such as allowing or blocking pre-configured, common P2P, or individual ports. Gufw has been designed for Ubuntu, but is also available in Debian-based distributions and in Arch Linux; anywhere Python, GTK and UFW are available.

Features