GUIDE: How to Upload Storyline Content to the Web Using Amazon S3

Is there any way to restrict access to enrolled students without making the bucket public. The url to the  story.html file in S3 file can be freely copied and pasted and the Storyline course can be accessed. I tried using  bucket  policies using http referrer and ip addrress restriction but get an error similar to Lannie's above ("This XML file does not appear to have any style information associated with it. The document tree is shown below." I hope somebody can show the way with these bucket policies. Not having much progress with S3 documentation or forums.