Gufw might be a bit more popular than Plasma Firewall. We know about 1 link to it since March 2021 and only 1 link to Plasma Firewall. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
According to the KDE page here, it supports UFW or FirewallD as the firewall program to use. Source: over 2 years ago
2- You should set it up anyways gufw.org. Source: about 3 years ago
ufw - Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall.
TinyWall - Lightweight and non-intrusive firewall
LuLu by Objective-See - LuLu is the free open-source macOS firewall that aims to block unauthorized (outgoing) network...
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Nufw - NuFW is a GPL extension to Netfilter (that is Linux firewall). It adds identity-based filtering, i.