Setting up a page in DNN to automatically forward the user to another URL is simple enough... but how do I make it pass this 'landing' page's address as an HTTP REFER? 

We have a database that uses the referral for authentication. (Stupid, but we didn't set it up.)  It uses IP Auth when inside our system, but when logging in from outside it checks to make sure the proceding page was our web site.   Direct linking won't work-- you have to go to a page on the site and click that link to pass the refer-by on.

A basic url forwarding apparently doesn't pass this refer on.  I want to set up a 'landing page' that we can link to that will automatically forward to the database and pass on the refer for authentication.  Can this be done?