LogMeIn Hamachi is a VPN, a software networking solution which enables you to send data securely over the Internet. You can easily set it up, and it is most suitable for small groups and small businesses. LogMeIn Hamachi offers two free versions of Hamachi: Unmanaged and Managed. The Unmanaged version lets you create VPN networks in which clients connects to one another, none of them managing the connection. The Managed version allows you to create VPN networks in which the client connects to a hub (which manages the connection). If you need information about how to configure it, please consult the manual.