I can't connect to Flash Media Server 5 on UBUNTU

Hello everyone,
I install Flash Media Server 5 Extended edition with apache on UBUNTU SERVER 14.04 successfully.
Now when I type IP address in the other computer in the same network I can login to the Flash Media Server console but when I want to publish video from webcam or other devices to the media server I get the error "NetConnection.Connect.Failed"

I am newer in Linux please advise me to solve this problem.
Thanks in advance.