This document discusses how to provide secure connectivity to public cloud networks using a virtual private network (VPN). It describes how a VPN allows users to securely access remote servers and databases over the internet. Specifically, it discusses how Amazon Elastic Compute Cloud (EC2) allows users to launch virtual servers in the cloud and how AWS Identity and Access Management provides authentication and authorization for cloud resources. The document also provides a block diagram of the system showing how users can login to the cloud using a VPN for secure access to EC2 machines and databases.