HEATKEYS

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

Router/Bridge Linux firewall distribution with web interface and aimed at providing the network services a LAN requires.

Best of open source: Simplified! Save time and money with free pre-integrated solutions you

SecurityFocus is designed to facilitate discussion on computer security related topics, create computer security awareness, and to provide the Internet's largest and most comprehensive database of computer security knowledge and resources to...

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

The best online security training in the world. Get your offensive security professional certification now!

Linux.com - For the community, by the community, Linux.com is the central source for Linux information, software, documentation, how-tos and answers across the server, desktop/netbook, mobile, and embedded areas.

Tecmint - Linux Howtos, Tutorials, Guides, News, Tips and Tricks.

News and feature lists of Linux and BSD distributions.

Security Software, virus protection and anti-spam from the world

Home of the pfSense project, free Open Source FreeBSD based firewall, router, unified threat management, load balancing, multi WAN, Linux