VPNs today are set up in a variety of ways, and can be built over ATM, frame relay, and X.25 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, IP-VPNs can more transparently extend these capabilities over a wide network. An IP-VPN link can be set up anywhere in the world between two endpoints, and the IP network automatically handles the traffic routing.
Is it secure?
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. Secure IP-VPNs are networks that are secured by encryption and authentication, and layered on an existing IP network.
