The VPN connection from your data center into your AWS account uses IPSec to create secure tunnels using the latest generation encryption to ensure the secrecy of your communications traffic.

You can create as many as five VPGs per region, and as many as 50 customer gateways. Each of the VPGs can support up to 10 IPSec connections.

The customer gateway is a virtual representation of the hardware device in your data center that implements the client side of the VPN connection. AWS provides the configuration information you need to set up your device when you set up the Site-to-Site VPN in the console.