Abstract: It set up a double authentication way based on LDAP to respond to the demand that multiple application systems use the single user to log in. With the users register being the background, first this paper concisely describes the basic theory and system architecture of LDAP, and then designs and achieves a double authentication way combined with LDAP and local verify ways. This paper describes the specialty of the authentication methods and successfully applied it in the Qinghai oilfield publish the data of exploitation well by automatical collection system.

Key words: LDAP, double authentication way, local verify, production system 