MAC address spoofing is common technique for testing your network, and it's a favored method for penetrating poorly planned network security. Learn how to do it on the major platforms.

Whether you're out of work, feeling trapped in your current position or looking for new opportunities in IT, it's time to look at ways to be more competitive in a crowded market.

Clustered and highly available file systems are plentiful, but each brings its share of tradeoffs and workarounds to the table. Learn about some top choices along with the benefits and pitfalls they entail.

Two software suites make it relatively easy to build your own cloud for testing or selling.

Bacula is a popular, robust and open source backup solution. Learn the basics of Bacula configuration with our simple guide.

Learn how to create an HA MySQL deployment with DRBD and Heartbeat.

Public key encryption is a powerful tool in your security arsenal. This week: how PKE works, step-by-step.

Bacula is a well-maintained, open source backup solution. This week: learn the basics of Bacula setup and configuration.

There's a lot to consider when you decide to deploy DNS with Windows network. This overview will get you started, and next week we'll look at securing your setup.

Getting support for your Mac in an enterprise environment can feel like pulling teeth. Read up for some tips on how to find those elusive network drives, connect to a VPN or live without PowerPoint.

Linux is always changing and keeping up with the latest can be a challenge. Here are five ways to stay up-to-date with the speeding penguin.

RemoteApp is a leap forward in terminal services that blurs the lines between local and remote applications. Learn how to configure it for nearly transparent remote computing.

With everything from intrusion detection to instant message filtering, SmoothWall's UTM-1000 packs a big punch with best-of-breed open source software on board.

Best of ENP: Nagios is a powerful and extensible tool that'll keep you up to speed on what your servers (and the services they're providing) are up to.

Adding a firewall can mean adding complexity to your network and disrupting operations. Cisco IOS's Transparent Firewalling feature removes some of the hassle.

Windows Virtualization: Microsoft may be late to the virtualization game, but Hyper-V is a compelling offering all the same. Here's how to get started.

SNMP monitoring, painless RRD graphs and a pleasant interface? And it's open source? Cacti should have you at "hello."

With Flex Links, you get simple, reliable, and scalable layer 2 redundancy. Unlike Spanning Tree, Flex Links pairs don't "just work." Here's how to configure your network for them.

Remote management, baked-in NAP and more on the way.

The Cisco Switch Port Analyzer, or SPAN, enables advanced network troubleshooting and robust monitoring, but it's tricky to get right. Let us show you how.