To allow incoming rtsp streams, I must open incoming TCP port 554. I must also open a range of UDP ports.
6970 through 6999, says http://comments.gmane.org/gmane.comp.security.shorewall/660 .
At least 8466 through 8469, says my own
lsof output, when streaming from youtube (
, if that stays intact for a day or two).
Is there any constraint on which UDP ports an rtsp server might request in the
server_port fields of a SETUP request ( http://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol )?
In other words, must I open all UDP ports in my firewall? (I'm using shorewall on Ubuntu, if that makes a difference.)