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Streaming WMT (netshow) through PIX with Cache Engine


I am trying to stream WMT from a pre-loaded Cache engine through a PIX firewall. I would like to use UDP for the streaming, but when I start the streaming TCP is selected by default. Forcing UDP within Windows causes an error. The PIX doesn't allow the UDP traffic through since it didn't originate from the inside. Outside the firewall UDP only works if I force it. TCP is the default. First, is UDP the best way to do this or is TCP ok since it is comming from the Cache engine? Second, how can I change the Cache engine setup to default to UDP or is this not possible?

Thank you,

Hampton Saussy

Midlands Technical College


Re: Streaming WMT (netshow) through PIX with Cache Engine

We had a similar issue. If the firewall is not configured to accept TCP ports, then the streaming video server will perform HTTP cloaking i.e Instead of using the TCP ports it will use HTTP port 80 to get through the firewall, then the server sends the streaming video data via UDP. If UDP cannot pass through the firewall, the client requests delivery via TCP. The fixup rtsp command lets PIX Firewall pass RTSP (Real Time Streaming Protocol) packets. This command does not fix RTSP UDP connections. So I guess using TCP is a better option.