Download the macOS Server app to the Mac that you want to use as your server. An Apple AirPort router tends to work best, as your Mac will be able to complete much of the AirPort setup automatically. Connecting to your VPN requires a router that supports port forwarding and DDNS services. For the best results, the Mac that you’re using as your server should be permanently connected to the network via an ethernet cable. In order to create your VPN server, you’ll need the following: