Privacy and protection of data is of utmost importance when deploying services over the Internet, where it can be vulnerable to attacks or illegal entry. IP-VPNs are networks that are secured by encryption and Authentication and layered on an existing IP network.
VPNs today are set up in a variety of ways, and can be built over different technologies. However, the most popular current method is to deploy IP-based VPNs, which offer more flexibility and ease of connectivity. Since most corporate intranets use IP or Web technologies.