regueiro writes: I have blocked Internet radio who use port 80. You should inspect the port and you can add this commands regex audio-mpeg “audio/.*” policy-map type inspect http test_radio parameters protocol-violation action drop-connection log match response header content-type regex audio-mpeg drop-connection log match request header user-agent regex _default_windows-media-player-tunnel drop-connection log class global-class-test inspect http test_radio To help you, use a sniffer and capture radio traffic and see http headers. It is easy to block streaming from media-player, but for other I check the response header and when I see audio/*   (like audio/*  where * can be mpeg,  x-mpeg,…