login forwarding?

[Boehnker, Karl Wilhelm]

Hi all,

I'm working on a university's online course portal project.
One of the things we want to do is allow users to 
transparently login to imp by logging into the portal.

Obviously I can redirect/login the user to the imp box using
something like 

http://imp.box.edu/mailbox.php3?actionID=6&mailbox=INBOX&imapuser=somedude&p
ass=somepass&server=localhost&port=43

But I'd prefer to do this without passing the credentials 
in the url like that. 

So, my question is whether or not I could use something like
LWP from the portal machine to login and then just pass the
HordeSession id on to the user and redirect them to
http://imp.box.edu

Has anyone done this or something similar? 

Thanks.

--
Karl Boehnker