UFW or Uncomplicated Firewall, is a text based firewall that works with iptables. UFW is designed to be an easier way to manage a firewall from the command line. Whether this is easier than learning iptables or not, you can decide. But UFW comes partially set up when you install Ubuntu.

The Ubuntu Unleashed blog has an excellent guide to the ins and outs of the Uncomplicated Firewall (ufw), a new feature in Ubuntu Linux 8.04, or Hardy Heron, that makes it easy to control the traffic into and out of your system. While turning on the firewall is as simple as typing sudo ufw enable, you can do a lot more with ufw, including:

Most firewall systems contain a Web-based component that allows you to configure the firewall. This holds true for most entry-level firewall systems (Linksys, D-Link, etc.) and also open source firewall systems such as pfSense. These systems tend to provide ways to access the Web interface remotely via the Internet; however, this should not be considered secure at all.

The firewall configuration on CentOS 6 has changed. This article shows how to add your own firewall rules to the configuration. CentOS 6 has more options with the firewall than previous versions.

Like all Linux distributions, Ubuntu 10.10, aka, Maverick Meerkat, the latest version of the popular Linux distribution, ships with a firewall installed. The firewall is actually embedded in the kernel. In Ubuntu, the firewall’s original command line interface has been replaced by ufw, a more user-friendly command line script.

So you got that shiny new Netbook, installed Linux on it and carry it along everywhere you go. The default enabled Firewall blocks incoming traffic so you feel safe when connecting to that anonymous WiFi network at your favorite fastfood restaurant.

This article continues the series of articles on Fireall Builder, a graphical firewall configuration and management tool that supports many Open Source firewall platforms as well as Cisco IOS access lists and Cisco ASA (PIX).

The Uncomplicated Firewall (UFW) is a new tool from Ubuntu whose goal is to make configuration of the built-in Linux packet filter less complicated and more secure for novice users.

On Fedora 18, the new firewall application is called FirewallD. It has its own command-line and graphical utility, but the graphical firewall tool installed belongs to the old firewall application which it replaced.