Re: blocking streaming audio --PIX or CIsco IOS ???
There really is no way to block streaming of audio/video without blocking port 80. You can setup an outbound deny statement to block certain applications such as RealAudio (tcp/udp 7070), Quicktime (6979-6999), and then h323 (1723).
You can also try using Websense. You have a server that is updated each day on the sites that offer what you are trying to block. The pix will then block these sites according to what Websense tells it to do. Websense
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...