Ldap-based Directory Services And Applications

Because different network operating systems and applications store their own information in different location, Information can't store in a center database, which make administration and maintenance more difficult. It is directory service that resolved this sort of difficulty by means of information's centralized storage. This paper introduces evolution history of directory service technology, and hereby clarifies why LDAP can be selected as directory service access protocol (DAP). DAP itself is developing continuously. By the comparison of LDAPvl LDAPv2 and LDAPvS, it embodies that LDAPvS keeps compatibility with previous versions, hi the meantime it has its own features such as distribution and extensibility exclusively, and enhancement on security and support of internationalization as well. With the emergence of LDAPvS and the beginning of LDAP API's standardization process, LDAP application have already penetrated into many fields including NOS, e-business and application servers etc. For the purpose of application and deployment of LDAP hi real-life, this paper also describes the entire process of deploying LDAP in detail, and introduces three distinct LDAP programming models: LDAP C API, ADSI and JNDI briefly. The latter part of this paper is one example concerned with LDAP application: Ho Hai University Electronic Mail System. In a sense, it reflects the broad perspective of LDAP and directory service.