Dual Router Port Forwarding

RouterOS Beginner Basics
1

Hi all,

Just a question.
How do I do double port forwarding? I currently have 2 routers, the RouterBoard is behind my main router, the main router has all ports forwarded to the RouterBoard,
and I have a server behind the RouterBoard, for example if I wanted to forward Port 22 for SSH?

It will go through the main router, before forwarding it to the RouterBoard and then to my server?

Any help would be greatly appreciated.

Thanks.

2

Figured it out,
In. interface had to be filled in for the WAN interface.