An improved FTP system based on SSL encryption tunnel

SSL is applied to network communication security field by enterprise, especially VPN field, the VPN has become very important like IPsec VPN. This paper on the basis of previous studies, Put forward a method based on the SSL tunnel technology and applied to FTP transmission system. Through add a application-layer protocol to solve the problems of tunnel connecting safety, and We have made an in-depth analysis on the encrypted tunnel approach of establishing SSA rather than a simple approach of data encryption in order to provide security for the remote file transfer system in enterprises.