We are using ISA Server 2006 as our firewall and SmartFilter as our Web filtering app. We have unblocked the Streaming Media category in SmartFilter so that users can get to the Youtube site. This works good for users with Windows PCs. On iPads, the users can watch Youtube apps if they are not Adobe Flash encoded. When they try to use the iPad Youtube app, the site comes up, but the video just continues to clock. I am assuming that I need to open up some ports on the ISA app. Does anyone know what needs to be done to allow the iPad Youtube app through the ISA Server 2006 firewall?