07/11/2008   1
 Introduction to Active Directory
 Active Directory Logical Structure
 Active Directory Physical Structure




                                        07/11/2008   2
 What Is Active Directory?
 Active Directory Objects
 Active Directory Schema
 Lightweight Directory Access Protocol (LDAP)




                                       07/11/2008   3
Directory Service
  Directory Service                 Centralized Management
                                    Centralized Management
    Functionality
     Functionality

 Organize
 Organize                    Single point of administration
                              Single point of administration

 Manage
 Manage         Resources
                 Resources    Full user access to directory
                              Full user access to directory
 Control
 Control                      resources by a single logon
                               resources by a single logon



                                                      07/11/2008   4
   A directory service stores all the information
    needed to use and manage these objects in a
    centralized location, simplifying the process of
    locating and managing these resources.
 What Is a Directory Service?
 What Is a Schema?
 What Is the Global Catalog?




                                 07/11/2008   6
A structured repository of information about people and
resources in an organization


         Domain
            OU1                                  KimYoshida
                   Computers
                                          Attributes  Values
                      Computer1
                                          Name        Kim Yoshida
                   Users
                       User1              Building    117
             OU2                          Floor       1
                   Users
                       User2
                   Printers
                        Printer1
A repository is a collection of resources that can be
accessed to retrieve information. Repositories often consist
of several databases tied together by a common search
                                                    07/11/2008      7
engine.
defines all the objects and attributes that the directory service uses
  to store data



      Examples of object                              Examples of
           class                                       attributes
                                                   accountExpires
              User                                 distinguishedName
                                                   directReports
                                                   dNSHostName
                                                   operatingSystem
              Computer                             firstName
                                                   lastName

              Printer
   The global catalog is the central repository of
    information about objects in a tree or forest. By
    default, a global catalog is created automatically on
    the initial domain controller in the first domain in the
    forest. A domain controller that holds a copy of the
    global catalog is called a global catalog server.
    It stores only attributes about each objects ,such as
    objects location




                                                Read Only

        Global Catalog
◦ Provide a way to design and administer the
  hierarchical structure, logical structure of the
  network Include
   Domains and organizational units
   Trees and forests
Domain Tree
                         Domain




     Domain         Domain       Domain


                                          OU
                       Objects
Domain     Domain

                                  OU           OU

                                     Domain

              Organizational Unit


         Forest
   Logical collection of users and computers.
   Several benefits of domain
    Enable you to organize objects within a
    single dept. or location.
   Act as a security boundaries.
   Domain Objects are fully replicated to the
    domain controller’s within a domain, not to
    other domains .
Tree Root Domain

   Contiguous linking of one or more
    AD domains that shares a common
    namespace or in a Parent-Child           Parent
                                              Parent
    Relationship.                                                Parent Domain
   Two-way transitive trust                  contoso.msft
    automatically created
   Tree Root Domain :- first domain in
    a tree or parent domain                                            Child Domain
                                                             Child
                                                              Child

                                                  sales.contoso.msft




                                                                        New
                                                                       Domain
   Combination of One or More Trees
   A forest is a disjointed namespace
   www.microsoft.com
   www.msn.com
   Transitive Trusts created automatically
Forest Root Domain
   The Forest Root Domain Is
    the First Domain Created
    in a Forest

                                             Domain

                         Forest         Tree
    Tree Root Domain

                                                              OU
                                  Domain

            Domain                                     OU
                                                            Domain   OU



            Tree

Domain                 Domain
                                                Objects
   An organizational unit (OU) is a subdivision within an Active
    Directory into which you can place users, groups, computers,
    and other organizational units. You can create organizational
    units to mirror your organization's structure.
   Implements a Structure inside a Domain
   Can be nested as needed
   Can not be assigned any rights
   Typically used for Administrative Reasons         OU


    ◦ e.g. System Policies                       OU
                                                    Domain OU




                                          Objects
   Benefits of using OUs
    ◦ Easier to locate and manage the Active Directory objects
    ◦ Define more advanced features by applying Group Policy to
      an OU
    ◦ Delegate administrative control over OUs
 Not related to logical Structure
 Modeled via „Sites“
 A site is well connected via fast Network Links
 One Site can home multiple Domains
 One Domain can spread across many Sites
 Domain Database is stored on Domain Controllers
   Sites
   Domain controllers
   WAN links
                                      Site




            WAN Link




                                Domain Controllers
    Site
      A site is one or more IP subnets connected
      by a fast and reliable link.
   Domain Controller is a server on a Microsoft Windows
    Network that is responsible for allowing host access to
    Windows domain resources. The domain controllers in
    your network are the centerpiece of your Active
    directory service.  It stores user account information,
    authenticates users and enforces security policy for a
    Windows domain
Lightweight Directory Access Protocol (LDAP)




                                   Contoso.msft

                                       Finance

                                           Sales

Relative distinguished name                      Suzan Fine


  CN=Suzan Fine,OU=Sales,OU=Finance,DC=contoso,DC=msft
                                            07/11/2008        21

1.2 active directory

  • 1.
  • 2.
     Introduction toActive Directory  Active Directory Logical Structure  Active Directory Physical Structure 07/11/2008 2
  • 3.
     What IsActive Directory?  Active Directory Objects  Active Directory Schema  Lightweight Directory Access Protocol (LDAP) 07/11/2008 3
  • 4.
    Directory Service Directory Service Centralized Management Centralized Management Functionality Functionality  Organize  Organize  Single point of administration  Single point of administration  Manage  Manage Resources Resources  Full user access to directory  Full user access to directory  Control  Control resources by a single logon resources by a single logon 07/11/2008 4
  • 5.
    A directory service stores all the information needed to use and manage these objects in a centralized location, simplifying the process of locating and managing these resources.
  • 6.
     What Isa Directory Service?  What Is a Schema?  What Is the Global Catalog? 07/11/2008 6
  • 7.
    A structured repositoryof information about people and resources in an organization Domain OU1 KimYoshida Computers Attributes Values Computer1 Name Kim Yoshida Users User1 Building 117 OU2 Floor 1 Users User2 Printers Printer1 A repository is a collection of resources that can be accessed to retrieve information. Repositories often consist of several databases tied together by a common search 07/11/2008 7 engine.
  • 8.
    defines all theobjects and attributes that the directory service uses to store data Examples of object Examples of class attributes accountExpires User distinguishedName directReports dNSHostName operatingSystem Computer firstName lastName Printer
  • 9.
    The global catalog is the central repository of information about objects in a tree or forest. By default, a global catalog is created automatically on the initial domain controller in the first domain in the forest. A domain controller that holds a copy of the global catalog is called a global catalog server.  It stores only attributes about each objects ,such as objects location Read Only Global Catalog
  • 10.
    ◦ Provide away to design and administer the hierarchical structure, logical structure of the network Include  Domains and organizational units  Trees and forests
  • 11.
    Domain Tree Domain Domain Domain Domain OU Objects Domain Domain OU OU Domain Organizational Unit Forest
  • 12.
    Logical collection of users and computers.  Several benefits of domain  Enable you to organize objects within a single dept. or location.  Act as a security boundaries.  Domain Objects are fully replicated to the domain controller’s within a domain, not to other domains .
  • 13.
    Tree Root Domain  Contiguous linking of one or more AD domains that shares a common namespace or in a Parent-Child Parent Parent Relationship. Parent Domain  Two-way transitive trust contoso.msft automatically created  Tree Root Domain :- first domain in a tree or parent domain Child Domain Child Child sales.contoso.msft New Domain
  • 14.
    Combination of One or More Trees  A forest is a disjointed namespace  www.microsoft.com  www.msn.com  Transitive Trusts created automatically
  • 15.
    Forest Root Domain  The Forest Root Domain Is the First Domain Created in a Forest Domain Forest Tree Tree Root Domain OU Domain Domain OU Domain OU Tree Domain Domain Objects
  • 16.
    An organizational unit (OU) is a subdivision within an Active Directory into which you can place users, groups, computers, and other organizational units. You can create organizational units to mirror your organization's structure.  Implements a Structure inside a Domain  Can be nested as needed  Can not be assigned any rights  Typically used for Administrative Reasons OU ◦ e.g. System Policies OU Domain OU Objects
  • 17.
    Benefits of using OUs ◦ Easier to locate and manage the Active Directory objects ◦ Define more advanced features by applying Group Policy to an OU ◦ Delegate administrative control over OUs
  • 18.
     Not relatedto logical Structure  Modeled via „Sites“  A site is well connected via fast Network Links  One Site can home multiple Domains  One Domain can spread across many Sites  Domain Database is stored on Domain Controllers
  • 19.
    Sites  Domain controllers  WAN links Site WAN Link Domain Controllers Site A site is one or more IP subnets connected by a fast and reliable link.
  • 20.
    Domain Controller is a server on a Microsoft Windows Network that is responsible for allowing host access to Windows domain resources. The domain controllers in your network are the centerpiece of your Active directory service.  It stores user account information, authenticates users and enforces security policy for a Windows domain
  • 21.
    Lightweight Directory AccessProtocol (LDAP) Contoso.msft Finance Sales Relative distinguished name Suzan Fine CN=Suzan Fine,OU=Sales,OU=Finance,DC=contoso,DC=msft 07/11/2008 21