Category Archives: Tech Articles

Windows Clients not authenticating to NPS / RADIUS Server

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I have been in the process of setting up a BYOD solution at my school for the past few months (more on this to follow!) and have set-up a NPS / RADIUS Server as the core authentication server for this solution. All was going well and the launch was publicised to everyone for the start of the January term.

I returned after the Christmas break to perform some final tests and document the system ready to let our students start connecting their own devices; when I found that Apple and Android devices would connect fine but I could not get any Windows laptops to connect at all!
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Ubuntu Server 12.04 “Cannot display this video mode”

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I have been installing a new Ubuntu server on some old hardware at work this week (HP Proliant DL360 G4) to configure a Free-Radius server for our site-wide WiFi solution; however I fell at the first hurdle!

After installing Ubuntu as normal and rebooting the server, I was presented with a black screen displaying “Cannot display this video mode”. Very annoying!

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Nagios check_http plugin

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Today I have been playing around with my Nagios install and making a real effort to get all services on the Windows servers monitored effectively. One of these servers I have been looking at is running WSUS and a couple of other web based services on different ports.

I started to read up on the help file of the check_http plug-in, which up until now I had assumed (wrongly!) would just check for a web response on port 80 for the host you ran the check against.

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WSUS Website Verifications are not accurate

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For quite some time now I have been seeing scores of the following errors filling up my WSUS Server’s Event Viewer;

  • 12052 – The DSS Authentication Web Service is not working.
  • 12042 – The SimpleAuth Web Service is not working.
  • 12022 – The Client Web Service is not working.
  • 12032 – The Server Synchronization Web Service is not working.
  • 12012 – The API Remoting Web Service is not working.
  • 12002 – The Reporting Web Service is not working.
  • 13042 – Self-update is not working.

However, WSUS was receiving updates from Microsoft and all of my clients were getting updates from my server, so I did not let it bother me too much! Today I was setting up monitoring for all services and roles on this server and so decided I wanted to clear these errors up for good.

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Installing IIS, PHP and MySQL on a Windows XP Professional

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Install IIS

  1. Insert your Windows XP Professional CD into your computer. When it auto runs, choose “Install optional Windows components”
  2. In the window that opens, scroll down the list until you find “Internet Information Services (IIS)” and tick the box next to it.
  3. Click “Next” then wait whilst Windows installs IIS.
  4. Click “Finish” and then close the CD window. Continue reading Installing IIS, PHP and MySQL on a Windows XP Professional →