Your network contains a server named Server1 that has the Streaming Media Services server role installed. Server1 is located in the perimeter network.
A firewall named Firewall1 connects the perimeter network and the Internet.
You need to ensure that clients from the Internet can access streaming content from Server1 by using RTSP. The solution must minimize the number of open ports on Firewall1.
Which two inbound firewall ports should you open on Firewall1? (Each correct answer presents part of the solution. Choose Two.)
A. UDP 5005
B. TCP 6881
C. TCP 1755
D. TCP 554
E. UDP 8080
Correct Answer: AD
Explanation/Reference:
The scheme rtsp requires that commands are issued via a reliable protocol (within the Internet, TCP), while the scheme rtspu identifies an unreliable protocol (within the Internet, UDP). If the port is empty or not given, port 554 is assumed. The semantics are that the identified resource can be controlled by RTSP at the server listening for TCP (scheme "rtsp") connections or UDP (scheme "rtspu") packets on that port of host, and the Request-URI for the resource is rtsp_URL.
For example, the RTSP URL: rtsp://media.example.com:554/twister/audiotrack
Systems implementing RTSP MUST support carrying RTSP over TCP and MAY support UDP. The default port for the RTSP server is 554 for both UDP and TCP.
http://www.ietf.org/rfc/rfc2326.txt
Firewalls for unicast streaming
To configure a firewall for unicast streaming, you must open the ports on the firewall that are required for the connection protocols that are enabled on your server. If you are streaming content by using either the MMS protocol or the RTSP protocol, you must support both User Datagram Protocol (UDP) and Transmission Control Protocol (TCP).
Open the ports
To enable Windows Media Player and other clients to use the HTTP protocol, the RTSP protocol, or the MMS protocol to connect to a Windows Media server that is behind a firewall, open the following ports.
http://support.microsoft.com/kb/827562/en-us
