This presentation shows an example on how you can restrict access to a deployed SELECTserver Administration Site so that it cannot be accessed by regular users. This is just an example and configuration is on Microsoft side as SELECTserver itself does not have built-in security so this needs to be done by qualified IT personnel. The example is for a deployed SELECTserver running on Windows Server 2008 R2, however it can also be done on Windows Server 2003 using exactly the same logic.
Here is the link to the video: