So I have a network at my girlfriends office on which we want to set up a raspberryPi VPN server. I have the server pretty much set up; it's working on my home network. I understand that when I move the server I'll have to change the WAN address, which interface it's using etc but this is the basic idea.
Currently their office shares a wireless router with the business next door. They have given us the admin password to the router to make any port forwarding changes I need to make etc. Her windows PC receives the connection wirelessly and so will the raspberryPi. Do I need to purchase a switch to put between the RBP and the PC? Or can I plug the RBP in via ethernet to the PC? The reason I want ethernet is that I'd like to be able to enable wake-on-LAN.