Virtual Private Network's Security Study And It's Application On Enterprise Document Management System

Virtual Private Network is a new rising network technology.At present,Internet itself is still a network without secure assurance,the key of building virtual private network is in how to assure private network's security.according to the characteristic and developing status quo,this article classifies the safety problem into three:the safety of tunneling technology,the safety of encryption and the safety of authentication technology.With the related technologies used in the enterprise document management system,this paper descripted the solutions on the variety of safety problemsrcombining L2TP protocol with IPSec protocol.the symmetric encryption and the asymmetric encryption are both into effect.using intelligent card to enhance authentication's secure performance.At last ,based on current softwares and hardwares,aiming to the actual problem on building virtual private network in enterprise document management system,some key technology's implementation has being discusssed and programed.