Downloading embedded container content

[rand]

Hi, is it possible to allow a user to download an arbitrary file that is embedded in a container that is being published via IWP in FM 6?(e.i. a PDF is uploaded to the DB, and a user is able to download it through their web browser)

If not, I know that I can host the files on another server, but confidentiality is of utmost importance; is there a way for IWP to use the users login information to authenticate themselves at the file server?

Thanks in advance.