Is there a way to port forward Winbox to another MT?

Trying to figure this one out, or if it’s even possible.

I have a Mikrotik with a public IP address. It runs NAT, and behind it there’s another Mikrotik. Is there a way to forward Winbox through the Mikrotik so I can use Winbox on both routers? If I forward port 8129 (?) I can’t access the first one. Is there a way to change the authorization port used to connect Winbox?

I only have one public IP, and the network layout can’t be changed.

-=Russ=-

Don’t think so . . . i think the only option is to setup a vpn to the mt and then use the inside ip to connect.

Sam