Linux Journal

Build a Better Firewall-Linux HA Firewall Tutorial

Many enterprise networks require redundant HA (High Availability) infrastructure for key systems like network firewalls. This article demonstrates how you can use a combination of open-source packages ...
Network World

Linux firewall basics with ufw

The ufw (uncomplicated firewall) represents a serious simplification to iptables and, in the years that it’s been available, has become the default firewall on systems such as Ubuntu and Debian. And, ...
ZDNet

Yes, you need a firewall on Linux - here's why and which to use

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Computerworld

Linux firewall survey, Part 2: Commercial firewall products

FireWall-1 is also the most powerful commercial firewall solution now available for the Linux platform. FireWall-1 isn’t the only well-known solution to move into the Linux camp. AXENT Raptor Firewall ...