There are many cases where you wish to migrate data from one location to another. In most cases, you will wish to do it over a secure channel. In this tutorial we will see what are the main steps in order to set a VPN (in this case: StrongSwan) on Google Compute Engine so you will have a server to server VPN solution between your on own server(s) located in the basement and Compute Engine.
In this tutorial we will setup a VPN connection from your own datacenter to Compute Engine. First, let’s look at the big picture. We wish to have one gateway in our datacenter and another on Compute Engine. These gateways, will be responsible to connect and secure our channel so we could transfer our data over it in a secure way.

High Level Network diagram

Main steps

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