ArtMan
1
Sorry, I have to ask. I did hours of searching but I could only find examples how to reach an webserver from the internet. 
I want to forward port range 2934 - 2937 tcp/udp to internal LAN ipadres 192.168.1.10
and
range 9987 - 9989 UDP to the same internal ip adres.
Can somebody please help me?
efaden
2
Make one of these rules for each port…
/ip firewall nat add chain=dstnat dst-port=1234 action=dst-nat protocol=tcp to-address=192.168.1.1 to-port=1234
ArtMan
3
Thanks for your help.
It is not possible to give an range?
Not to be lazy, I just want to learn 
efaden
4
Yes. Should be 1-5 for example.
efaden
5
And you “may” need to use to-ports instead… but I forget.
ArtMan
6
Thanks again for your help.
Opening multiple ports at once wasn´t possible so I did it one by one after opening an another firewall rule.
I set up my router according to this video and put some comment for the rule made at 29:41.