IPSec-Based VPNS

An international group organised under the internet engineering task force (ipsec) protocol suite to provide security services at the network level.ipsec technology is based on modern cryptographic technologies,making possible very strong data authentication and privacy guarantees.it supports a variety of cryptogarphic technologies and authentication schemes.Because the ipsec protocol suite is an open internet standard ,it enables interoperability between VPn products and delivers economies of scale for VPn vendors for customers,the benefits of standards-based VPn mean more product choices,faster product innovations,and lower price Authentication Establishing the identity of a VP user prior to granting access to valuable,confidential resources protects the integrity of a VPN and ensures network security.