From what I understand, ENRON employees were trading MP3 files with gnutella at the time they were asked to shred documents and this is why most documents wern't shred but rather were shared.

Firewalls suck if you want to share files. Reports have it that most push requests take 30 minutes average to come back. What good is that? I think you should do everything you can to educate users on how to set things up to open port 6346.