ITunes U links from inside Blackboard

Question

We are interested in adding links to ITunes U from individual courses in Blackboard. My main concern is that I haven't figured out how to prevent users from accessing the link from outside BB by simply cutting and pasting the link.
Does anyone know how to add some level of security such that the link can only be accessed if they are clicking on it in BB?
Katie Sanchez

Answer 1

Our solution was to create a Building Block for Blackboard that does all the authentication and authorization for our iTunes U site.
Basically the module just logs the user into BB (if they aren't already), creates a set of iTU credentials based on the courses the user is enrolled in, and sends the browser a redirect to the requested iTU page. On the iTU side, we match up the identifiers of the iTU courses with the course id's in BB and set up credentials that correspond to the various role's in Blackboard. At that point, everything falls into place. You'll have student access to an iTU course if and only if you are a student in the corresponding BB course (likewise for instructors).
  Windows XP Pro