Solution: Get passive ftp working with filezilla server on windows server 2008 on rackspace

After installing filezilla on my windows 2008 server hosted with rackspace I had issues getting connected with passive ftp. Active ftp worked fine using WinSCP but my favorite little Fling ftp app didn't work. It would hang up on the "getting directory listing" point and compain about passive connections. Rackspace was no help on the phone and they had nothing in their kb.