A Modified VPN Solution Based on Hybrid Tunnels

Conventional SSL tunnel of SSL-based Virtual Private Network is symmetric, in which the data must be encrypted at one end and decrypted at the other end, or contrariwise for the reverse direction. Because all data flows of VPN are relayed by VPN server via SSL tunnels, those symmetric SSL tunnels cause a lot of computational load concentrated in VPN server, and make it the bottleneck of VPN. This paper proposes a modified solution to eliminate the bottleneck prevailing in the existing VPN solutions: the VPN based on Hybrid Tunnel. It is done using Message Pushing (MP) algorithm.