Yesterday I was trying Nimble streamer to try sending the hdmi output of an HDBiT sender over the Internet to another home. No problem in generating a stream rtmp with FFMPeg and using it as a source of the Nimble server, I have already tried it with both UStream and Youtube. The JSPlayer test page works regularly (e. g. through http) and I see the output streak perfectly.
However, I didn't understand if there is any limitation of the Nimble streamer Free because I couldn't configure the router to access from outside the network. I tried to configure port 8181, open the firewall but from the tests it is not open.

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Hi,
there is no any limitation. Once you setup your network you will get it working