Connection to complete network and Port forwarding

Hello together,

Im pretty new to ZeroTier, but have some networking experiance.

Please see my diagramm below, I can manage nearly all IPs and Gateways.
Could someone explain as detailed as possible what I need to set up?
I saw, that a lot of settings on the routing I can already do on the Web UI, but actually i dont know how to route the 502 Port from germany to USA. On the SPS i can only define a IP (unfortunately).


Thanks very much, every single hint will help me.

Br Christoph

Are the routers Zerotier capable? That would simplify things a lot…

Unfortunately not.
I know, that I have to deal with static routs