It is a trend of virtual private networks (VPNs) to be used for information exchange between enterprises, branches of enterprises and enterprises and their employees instead of traditional dial networks and leased lin...It is a trend of virtual private networks (VPNs) to be used for information exchange between enterprises, branches of enterprises and enterprises and their employees instead of traditional dial networks and leased lines. The tunneling technique is the key technique to implement VPN. In this paper, with the VPN implementation requirements in mind, we perform a comparative research on the existing tunneling protocols including GRE, L2TP, IPSec and IP/IP. We also propose an integrated scheme of tunneling mechanism that supports VPN under the current condition.展开更多
文摘It is a trend of virtual private networks (VPNs) to be used for information exchange between enterprises, branches of enterprises and enterprises and their employees instead of traditional dial networks and leased lines. The tunneling technique is the key technique to implement VPN. In this paper, with the VPN implementation requirements in mind, we perform a comparative research on the existing tunneling protocols including GRE, L2TP, IPSec and IP/IP. We also propose an integrated scheme of tunneling mechanism that supports VPN under the current condition.
