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How the Spanning Tree protocol organizes an Ethernet network

Ethernet is so popular because it simply works and is inexpensive. However, the administration side looks a bit more complicated: For the network to run smoothly, the admin might need to make important decisions about the Spanning Tree protocol.

Smooth Check

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Why spam yourself with useless notifications every time a script completes successfully? You can use Nagios to screen the notices and just send the ones that need action.

Automatic Transfer

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If you want to manage large IT environments efficiently, you need automation. In this article, we describe how to transfer information automatically from the OCS network inventory system to the OpenNMS network monitoring tool.

Remote Diagnostics

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If you do not want to use any of the major management frameworks to manage your virtual machines, the Libvirt library for Python provides an alternative.

On Ice

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With CRIU, you can freeze the current state of a process and save it, then bring it back to life and continue from the point at which it was frozen.

Risk Management

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No matter how insecure Android might appear, you can't escape the "bring your own device" philosophy in today's corporate environment. In this article, we show how admins can use on-board tools in Android phones to regain a little control.

Painting by Numbers

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Graphite converts confusing columns of time series data into handy diagrams, showing trends in operating system and application metrics at a glance.

Lamentations of a Windows XP and Server 2003 Lover

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Woe unto us who try to hang on too dearly to the past for we shall experience the darkness that is to come. OK, so a great prophet I'm not, but my prophetic words ring true when we tarry too long in the complacence of our old, tired operating systems. But, know this: Even if you do hang onto your old operating systems for a bit too long, there's no impending apocalypse awaiting you – at least not in the short term.

Window Repairs

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Need to fix a Windows server? We'll discuss some techniques for getting your system back. You'll also learn some tricks for Active Directory and Exchange.

Protected

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Around since the 1960s, passwords are still the mainstay for authentication. The good news is you have alternatives in hardware multifactor authentication.

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