I'm trying to wrap my head around how exactly ZT works, if someone wouldn't mind helping me out. As far as I understand when I create the network all my devices get the ZT interface. When I try to connect between clients is the ZT server only there in order to setup a connection between my two clients and then the traffic becomes P2P? The way I'm thinking about it is that the ZT server sets up an encrypted tunnel between the two endpoints and then hands that tunnel over to the clients to use, is that correct?

As an aside, I don't allow UPnP and all that on my network and instead I opened port 9993 to my one client. What happens if you have multiple clients on your LAN? I assume maybe it's better to setup ZT on the router in that case so that the router becomes the endpoint and everything behind it will just need to be routed to from there?

Thank you!