Did you know that FTP is still around? Yes, the vile protocol still infests the Internet and like gum on your shoe, it’s hard to get it off. If you’re stuck with legacy FTP servers, at least try to make them secure with Secure FTP. The problem is how are you going to make that work through the TMG firewall? How? By reading the following article
http://www.isaserver.org/articles-tutorials/configuration-security/secure-file-transfer-microsoft-ftp-over-ssl-and-forefront-threat-management-gateway-tmg-2010.html
HTH,
Deb