How can I connect to a vnc server from outside of that LAN without setting up port forwarding,m assuming there are no ports blocked. I have the network IP and the PC's ip on that network.
I've noticed that SiteKiosk is able to connect to a machine (using uvnc) without any changes to the router or network configuration, so it is possible somehow. I've noticed it is using UDP ports 55660 and 50606. And I don' think it is using NSC.exe
On the SiteKiosk Client machine: The Teredo version requires at least UDP 3544 (out), which will enable you to connect to clients within the same network, for machines outside the same network all outbound UDP traffic must be allowed. The repeater version requires TCP 5500 (out), UDP 55901 (out) and UDP 55900 (in).
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