Ye, that’s what i thought
Ye, that’s what i thought also, but i went to my firewall and made a new port on the exceptions pannel, of course, the exception was this port, and tried, nobody came in. Afterwards i simply deactivated the firewall, so there was no excuse, still nobody in. But it can be that nobody was there to play, or nobody likes me. xD
Anyway, i’ll just keep joining games till they’re none. 
Well, talking about joining, sometimes it says “The host seems to be behind a firewall” or something like that, i guess it’s same problem.
Thanks for answering. ^^