Funny Answer for Symantec Technical Support:
Symantec Techniacl support engineer ask that youtube use advance protocol for streaming (most of the streaming site use same protocols), and symantec unable to block that streaming.....
Below are the Technical engineer words
"Following up your concern from certain sources as www.youtube.com, the protocol involved (RTMP).
Unfortunately, we do not cover this protocol as yet."
Therefore although symantec claim that Web gateway block streaming but such streaming which defined by symantec own.............very funny..................................................
.......................................................................................
Best regards
Ishaq