I went to my router - Zyxel (NBG-417N) in NAT/Application and set the port 40118 (as well as in Advanced). Iam not sure if I do it well. I dont know about any firewall on my Ubuntu, I did never install it.
NOW DOES IT WORK - THANKS A LOT, YOU ARE GREAT:)
welcome to zyxel nbg-417n nbg-417n - mozilla firefox 16 5 2013 204426