Do you have users with Ipads and they are complaining about their YouTube app not working?
If so, check out this article that shows you how to configure the TMG firewall to allow the app to work through the firewall:
http://richardkok.wordpress.com/2012/06/18/allowing-ipad-youtube-app-through-tmg-forefront/
HTH,
Deb
DEBRA LITTLEJOHN SHINDER
MVP (Enterprise Security)
“MS SECURITY”
[email protected]