Active Directories

Active Directories

Active directory is directory service which contains information of all users accounts and shared resources on network Active directory Is centralize hierarchical directory database

Purpose of ACTIVE directory

It provides user logon and authentication services using Kerberos It organize and manage: - User accounts - Computer - Group - Network resources

It enables authorized user to easily access the network resources Feature of Active directory: - Fully integrated security - Easy administration using group policy - Scalable to any size network - Flexible

Structure of active directory - Logical structure - Physical structure Logical structure of active directory * Domain * Tree - Parent/root - Child/ branch * Forest

Components of active directory - Physical component: DC and sites - Logical component: OU (organizational unit)

Domain - Domain is a logical secure administrative boundary - Creating initial domain controller in network also creates domainyou can not have domain without at least one domain controller

Each domain in directory is identify by DNS domain name Requirement for configuring DC 1) Workgroup 2) Static ip address 3) DNS server 4) 250MB free space 5) 2003 cd for installing DNS service 6) NTFS volume

While installing active directory two folders will get create NTDS and SYSVOL NTDS will be used for storing Active directory database SYSVOL (sysvolume) will be used for storing group policy and scripts

Location for active directory database file is systemdrive:\windows\NTDS\NTD S.DIT (New technology directory service. Directory information tree)

Five tools are installed on domain controller 1) AD users and computer 2) AD domain and trust 3) AD sites and services 4) DC security policy 5) Domain security policy

To check whether active directory services is installed on server OS then use “net accounts” command from command prompt