OpenLDAP

做目錄服務前, 先把架構(tree)畫出來!!

1988 X.500-Client <-> X.500-Server
1993 LDAP-Client <-> LDAP-Gateway <-> LDAP-Server
1995 LDAP-CLient <-> LDAP-Server

LDAP back end databases : BerkeleyDB, MySQL, Oracle, etc...

LDAP optimized for query

Schema
Database
Table
Data
Replication between db servers

nscd - GNU C Library: Name Service Cache Daemon

Client
    Pam LDAP
    PHP LDAP

Management Tool
    PhpLDAPadmin
    LDAP Explorer Tool

Implementation
    LDAP address book
    Authentication center
    LDAP relay
    DNS and LDAP
    Switch LDAP DB to mysql or others

Kerberos 5

Windows Boot Process with AD
    Client boot into windows
    Client get IP address
    Client query IP address for DC
    Client log on with computer account
    Client download and execute GPO rules
    Client running startup services
    User interactive login

DNS <-> AD+GPO <-> Exchange

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