Klaus sorts out fact and fiction in the debate on saving power with some real-world tests.

We review Pulling Strings with Puppet, Scalix: Linux Administrator's Guide, and Pro PHP: Patterns, Frameworks, Testing and More.

We talk to one of the creators of the Django project about the formation of the Django Software Foundation, and we show you how to get started with this user-friendly web framework.

Gambas is a fast and easy tool for writing graphical desktop applications in basic.

Udev, HAL, and D-Bus provide automated hardware configuration, even if you plug in on the fly. We'll help you easily access new devices.

Uptime is often just as important as updates. but doesn’t a kernel patchbrequire a reboot? Ksplice lets you have your cake and eat it too.

Klaus Knopper is the creator of Knoppix and co-founder of the LinuxTag expo. He currently works as a teacher, programmer, and consultant. If you have a configuration problem, or if you just want to learn more about how Linux works, send your questions to: klaus@linux-magazine. com

Conventional, woodpecker-style port knocking is open to sniffing and brute force knocking attacks. Sending an encrypted packet with an access request to the server is safer and more modern. Learn more about Firewall Knock Operator, a.k.a. Fwknop.

Are your systems secure against DNS attacks? We'll show you why they matter and help you determine whether you are vulnerable.

The Sysstat tools, featuring sar, iostat, mpstat, and pidstat, acquire system parameters and calculate statistics.