MMS streaming requirements

MMS port requirements for transparent redirection

To enable transparent proxying, you must configure the NetCache appliance, switches, or routers for MMS traffic. The recommended port numbers for transparent redirection of MMS traffic are as follows:

TCP port 1755
UDP port 1755
TCP port 80 (for HTTP encapsulation or proxying)
Note
The preceding port list includes all ports that must be redirected for multicasting.

Firewall requirements for MMS streaming

The following table describes the ports that should be opened to enable TCP and UDP MMS streaming traffic to pass through your firewall.

Note
Although TCP port 80 is commonly used for HTTP streaming traffic, other ports, such as TCP 8080 and TCP 7070, can also be used.

Firewall location	Minimum suggested ports to open on firewall	Result if ports are not opened
Located between NetCache and the server	TCP 1755 TCP 80	If you do not allow TCP 1755, NetCache retrieves content using server-side HTTP encapsulation over port 80.
Located between NetCache and clients	TCP 1755 UDP 1755 TCP 80	If you do not allow TCP 1755, clients use TCP port 80 for client-side HTTP encapsulation.

See Streaming media protocol details for descriptions of the protocols associated with the streaming media ports.

MMS multicasting support

Windows Media supports only scalable multicast streaming.