Active Directory: Final Solution to Enterprise System Integration
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Presentation on theme: "Active Directory: Final Solution to Enterprise System Integration"— Presentation transcript:
1 Active Directory: Final Solution to Enterprise System Integration Author: Liming LiaoDate: 2/23/2001
2 What is Directory Services It is the central authority that manages the identities and brokers the relationships between the distributed resources, enabling them to work together.Examples: Yellow Pages, Shopping ListIt is composed of objects like people, printers, servers, etc.
3 Functions of Directory Service A place to store information about network-based entities.A consistent way to name, describe, locate, access, manage, and secure information about these individual resources.
4 Why Directory Service is needed local area networks (LANs) and wide area networks (WANs) grow larger and more complex.networks are connected to the Internet.applications require more from the network and are linked to other systems through corporate intranets.
7 Disadvantages of life without a Central Directory Service Data duplicates prone to user errorssame data for one object has to be input several times enterprise-widelyUpdate information for a single object may require changes to be made to numerous placesMultiple logins for a single user trying to access different databases or networksEach database in the enterprise requires a separate login name and passwordEach network in the enterprise requires a separate login name and password
10 Advantages of Directory Services Entry and management of personal data, such as name, phone number and supervisor, is centralizedThese information is entered and stored in one place. If some of the information is entered wrongly or needs to be changed, it is easy to fixNo pain for duplicate inputs and updates
11 Advantages of Directory Services Information on user ID and password locations for computer systems is centralizedInstead of having user IDS and passwords scattered over several systems, they are managed form the central directory serviceSecurity is improved because there are much less userIDs and passwordsManagement of users’ userIDs is much easier for system admins
12 Advantages of Directory Services The procedure for determining the status and role of an individual in the organization is standardizedIn a large organization, there will be a number of people that will come and go. It is important to determine the exact status or relationship to the company they represent
13 Advantages of Directory Services Lookup of names, addresses, phone numbers and other “white pages” information is standardizedLookup of network resources like printers, servers, certificates and other “ yellow pages” information is standardizedCentralizing the management of the system will increase reliability and make it easier to keep it up to date
14 Open Directory Service Solutions- Vendor-specific Directory Service Solution and Open Standards Directory Service SolutionsDirectory Services-Sun Microsystems NIS+ (Network Information Service Plus)Novell’s NDC (NetWare Directory Service)Microsoft’s Active DirectoryOpen Directory Service Solutions-An Open Solution: X.500An Open Gateway ServiceLDAP - the Lightweighted Directory Access Protocal
15 Microsoft Active Directory Active Directory is the first enterprise-class directory service that is scaleable, built from the ground up using Internet-standard technologies, and fully integrated with the operating system.
16 Characteristics of Active Directory Hierarchical OrganizationIt uses objects to represent network resources.It uses containers to represent organizations.It organizes information in a tree structure made up of these objects and containers.Object-oriented StorageDifferent objects can be assigned different attributes.Administrators can assign access privileges to objectsMulti-Master ReplicationDirectories can be replicated on different servers and can be maintained locally across the networkUser can locate resources using the local directory service rather than contact the central domain controller every time as in NT 4.0.
19 Important ADS concepts WorkgroupA Windows 2000 workgroup is a logical grouping of networked computers that share resources, such as files and printers, and maintain a local security database, which is a list of user accounts and resource security information for the computer it is on.DomainA Windows 2000 domain is a logical grouping of networked computers that share a central directory database, which contains user accounts and security information for the domain.
20 Important ADS concepts Domain Tree and ForestA domain tree refers to a hierarchical grouping of domains that share a contiguous namespace, a common schema, and a common global catalog.A domain forest is a collection of two or more domain trees that do not share a contiguous namespace, but do share common schema and global catalog.NamespaceA collection of unique domain names.
21 Important ADS concepts Object and Organizational unitAn object is a representation of a network resource, including users, computers, printers, and so forth.Organizational unit is an object that can hold other objects.Multimaster replicationThe process by which Active Directory domains replicate with each other and resolve conflicting updates.Lightweight Directory Access Protocol (LDAP)An Internet standard by which Active Directory clients and servers communicate.
22 Benefits of Active Directory Service Simplifies management-Administrators have a single point of management for user accounts, clients, servers and applicationsAdministrators can delegate specific administrative privileges and tasks to individual users and groups to make better use of system administration resourcesStrengthens securityIt supports a number of authentication mechanisms used to prove identity upon logon to Windows 2000It support a fully integrated public key infrastructure and Internet secure protocols to let organizations securely extend selected directory information beyond their firewall to Extranet users and e-commerce customers
23 Benefits of Active Directory Service Extends interoperatbilityExpose all of the Windows 2000 directory features through standards-based interfaces.It provides a development platform for directory-enabled applications.More efficient usage of resourcesCentralized security control and shared logon information saves the trouble of creating security-admin functions of each specific systemUsers are exempted of the headache of maintaining multiple security information within a single domain
24 How to implement ADS LDAP ??? Multi-Platform (Unix, Windows NT, OS2 and IBM mainframes)Multi-Vendor support (Microsoft, Netscape, Sun and Novell)Common standardCentralizes the entry and management of personal data like name, phone number, and supervisorCentralizes the location of user ID and passwords for computer systemsProvides the Simple Authentication and Security Layer(SASL) providers, and the Secure Socket Layer(SSL) ProtocolCentralizes the procedure for determining the status and role of an individual in the organizationCentralizes the lookup of names, addresses, phone numbers and other ‘white page’ information
25 SummaryDirectory Services are essential to daily life in a networked worldPersonal information that is needed for the running of any organization is being kept in many separate systemsCentralized directory services can improve productivity and increase security while reducing management overhead