The Mobile Terminal Security Access System Based on IPSec VPN

Based on IPSec VPN technology, we propose a scheme for realization of mobile terminal security access system. The scheme, which combines with SM2, SM3 and the IPSec, realizes the establishment of the IPSec VPN client data communication, and the client-server security communication functions by using the replacement of cryptographic algorithm and VPN interface technology. The security access system consists of two parts: mobile terminals and the application server. In this paper, we analyze IPSec, IKE negotiation process, and the replacement of cryptographic algorithm on both client and server side, and then propose a new scheme of security access system. The experiments demonstrate the new system provides safe, reliable, and accurate data communication.