Category: IT

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Modern Protocol Problems with an Old Firewall

Legacy systems are part of any mature technical environment. While I was a combination of both impressed and shocked when recently presented with a SunOS 5.7 box (OS dated 1998!) I had to assist...

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Reading Cart Chunk with PowerShell

Look at the audio files in any professional radio playout system. They’ll likely be linear WAVE files with the associated metadata stored in the cart chunk format. With this information it’s usually enough to...

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Logging Failure Reasons in FreeRADIUS

FreeRADIUS is an incredibly powerful RADIUS server and a tool I’m currently taking through a proof of concept as a possible replacement for Microsoft NPS. While the debug output of FreeRADIUS is fantastic in...

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LLDP, Voice and Port Security on Comware 7

Getting a practical deployment of 802.1x on the wired network running Comware 7 is something that’s been on my radar for a while now. Until recently, we had a working (for our system) configuration...

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I’ll Take the High Road…

When does a URL not take you where you expect? Usually only when something’s wrong. However, I recently encountered a URL that would result in a browser taking a rather long path to the...

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Virtualizing the Campus Network

I’ll be the first to admit that I never really intended to be talking about in-depth networking topics when I started this blog a few years back. However, that’s been where a lot of...

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Some Experiments in OpenStack

As a little side project, I’ve been toying with OpenStack to replace ESXi on a couple of old servers I’ve got in a lab. Now that it’s up and running, I must say I’m...

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A Matter of Wireless Trust

For various very good reasons, we’ve recently had to change the the certificate presented by our RADIUS server for the wireless networks. The process of accepting the new certificate was a breeze on the...