VPN connection

Accessing other computers via VPN connection? Okay, so me and some of my friends (on a boarding school) are trying out some hacking stuff on each other, and so far we’ve got the theoretical stuff in place - we just have a problem because we cant try it out on each other, because the only internet access the school supports are a VPN connection (which we don’t know how to access each others PCs with) - so my question is: how to see each others PCs via VPN connection?

It’s going to depend on the VPN, but somewhere in the configuration you will need to setup forward of port 5900 (or whichever VNC port you are using).