This article describes how to configure QuickTime to receive a streaming movie for clients behind a firewall.

QuickTime uses the Real Time Streaming Protocol (RTSP) to send video and audio over the Internet. Some institutions may have a firewall that prevents movies streamed by RTSP to be viewed by clients behind the firewall. To overcome this, QuickTime 4.1 can stream video and/or audio using the Hypertext Transport Protocol (HTTP)--the protocol used by the worldwide web. Note: Playback performance may lag when using HTTP streaming instead of RTSP. In addition, the streaming server must also support streaming over HTTP.

To configure QuickTime for use behind a firewall, open the QuickTime Settings control panel. Choose Streaming Transport from the pop-up menu. Click the Auto Configure button. If QuickTime is able to configure itself for use behind a firewall, you should be able to watch a streamed movie.

If you are still unable to view streaming movies, contact your institution's network administrator.

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