Zachary Loeber

The personal website of Zachary Loeber.

Windows: 2003 to 2008 R2 RADIUS Migration

I found myself doing yet another Windows 2003 IAS Radius server migration to 2008 R2 NPS. I found that I had my prior notes and was able to do this quickly but, hell, if I’m looking this up in my own notes I may as well just post this succinct little procedure.

Copy %windir%\syswow64\iasmigreader.exe (this may also be on the installation media at \sources\dlmanifests\microsoft-windows-iasserver-migplugin) from the 2008 server to the 2003 server and run. It will spit out where the backup file was created. Copy this over

C:\>IasMigReader.exe
Start to convert IAS configuration.
IAS configuration is successfully saved to "C:\WINDOWS\system32\IAS\ias.txt".

Copy the ias.txt file that is generated back to the 2008 R2 server and import the configuration like so:

At the 2008 R2 Server:

netsh nps import filename="path\ias.txt"

Don’t forget to register your NPS service in AD or configuration settings be damned, NPS will just will not work.

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