IP Security Protocol-based VPNs

IP Security Protocol (IPSec) defines a set of protocols and cryptographic algorithms for creating secure IP traffic sessions between IPSec gateways. Enterprises can no longer keep pace with ever changing technology. Flexibility, scalability, global reach, and security are critical network components that help to define an enterprise's success. IPSec Virtual Private Networks (VPNs) allow enterprises to leverage the speed, ubiquity, and flexibility of the Internet, while gaining security beyond that which is provided by legacy network technologies. IPSec is one of the most complete, secure, and commercially available, standards-based protocols developed for transporting data. VPN is a shared network where private data is segmented from other traffic so that only the intended recipient has access. A key aspect of data security is that the data flowing across the network is protected by encryption technologies. Private networks lack data security, which allows data attackers to tap directly into the network and read data. IPSec-based VPNs use encryption to provide data security, which increases the network's resistance to data tampering or theft. VPNs are used for Intranets, remote access and extranets.