I have an ISA 2006 Front end fire wall on a windows 2003 system. I just want to block only the streaming of video and audio but allow users to download video and audio. I tried many rules on my ISA. Tried to block streaming protocols except http, tried by blocking content types and also tried to block by extensions. All of these rules simply block both streaming and downloading but not only streaming.
Can any one tell me a way around. I know that I can block it by ports but I am not sure which ports are to be blocked.