gufw
Uncomplicated Firewall
An easy, intuitive, way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others!
There is no official package available for openSUSE Leap 15.3Distributions
openSUSE Tumbleweed
openSUSE Leap 15.2
Debian 10
Debian 9.0
Fedora Rawhide (unstable)
Fedora 33
Fedora 32
Ubuntu 18.04
Ubuntu 16.04
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.