Apple QuickTime Streaming Server Darwin Streaming Server Bedienungsanleitung PDF herunterladen (Seite 23)

Getting Media Through Firewalls or Networks

With Address Translation

Darwin Streaming Server sends data using User Datagram Protocol (UDP) packets. Firewalls

designed to protect information on a network often block UDP packets. Client computers

located behind a ﬁrewall that blocks UDP packets can’t receive streamed media. However,

Darwin Streaming Server also allows streaming over HTTP connections, which allows

streamed media to be viewed through even very tightly conﬁgured ﬁrewalls.

Some client computers located on networks that use address translation may also be unable

to receive UDP packets, but they can receive media that’s streamed over HTTP connections.

If users are having problems viewing media through a ﬁrewall or via a network that uses

address translation, they should upgrade their QuickTime software to the latest version. If

users still have problems, their network administrator should provide them with the

appropriate settings for the Streaming Proxy and Streaming Transport panes of the

QuickTime Settings control panel.

Network administrators can also set their ﬁrewall software to permit RTP and RTSP throughput.

Streaming on Port 80

If you are setting up a streaming server on the Internet and you think some of your clients

are behind ﬁrewalls that only allow Web trafﬁc, you should enable streaming on port 80.

Once you do so, the Darwin Streaming Server accepts connections on port 80, the default

port for Web trafﬁc, and QuickTime clients will be able to connect to your streaming server

even if they are behind a Web-only ﬁrewall.

Once you enable streaming on port 80, you can’t run a Web server on the same computer as

your streaming server unless you do one of the following:

1 Set up multiple IP addresses on your server: These addresses can be on the same network

interface card or on multiple interface cards. Conﬁgure your Web server and streaming server

to accept connections on separate IP addresses.

2 Have your Web server accept connections on a port other than 80: If you do this, you must

change all URLs that point to the Web server to include the port number you have chosen.

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Apple QuickTime Streaming Server Darwin Streaming Server Bedienungsanleitung Seite 23