Connecting an Apple Device to the CUDN using the VPN service

A virtual private network is a network which uses encryption to provide a secure connection through an otherwise insecure network, typically the Internet. Or in other words "private data travelling over public IP infrastructure". This is not a new concept, but is becoming increasingly important as people need to access their IT resources when away from home, or when using external ISP providers. In this particular case, the connection is a VPN (a virtual private network connection to the CUDN).