State the page is non-official. Try to have pages not be public records. Keep your paws of content responsibility which must be with the person responsible for the page. However, we have to avoid the censoring power. We don't want moderator liability on faculty pages.
Students have no inherent right to run web pages off our computers.
Consider requiring sponsoring faculty, have students sign an agreement in advance. We don't have policies, we have guidelines. I hope I have provided you with some tools. We have the content-responsible person identified because of the links, so that the link doesn't go off to someplace it shouldn't. Not a problem.