Hi in this post i´ll tell u how to open your NAT without opening ports:
FIRST IMPORTANT STUFF:
-If u open your NAT this way it is anything but safe!
- U need your Username and password by your provider
- U need to do this everytime you restart your pc again
It will be a few pictures to show u how to do (srry that its in german, i marked everything important)
So thats basically it If u got any questions pm me or ask in ts
Hope i oculd help u, Nik