"Login or register to post comments" links take user nowhere

I am developing a website hosted by a university that uses its own means for authentication (a user needs a university ID and password in order to login and there is no registration form). The "login or register to post comments" links at the bottom of the pages do not direct the user to the university-wide login screen. Instead, it generates a URL that takes the user nowhere. Here's a link to a page as an example: http://webservices.itcs.umich.edu/drupal/lrconline/node/186

I have searched the forums thoroughly and read posts that discuss issues similar to mine, including an explanation of why/how this URL is generated: 344962#comment-1217877 . So although simply redirecting to https would solve my problem, I know it's not that simple and may not be possible. None of the posts I read address the crux of my issue: how do I solve this problem in an environment with an external means of authentication? Is it possible for me to change the "destination=" parameter so that the link redirects the user to the university-wide login screen?

I am kinda new to Drupal and web development, so if you can offer help I ask that you please provide thorough explanations so that I can understand how to implement your solutions.

Thank you in advance.