qr code c#.net generator sdk Understanding Windows Server 2003 Networks in .NET

Draw QR-Code in .NET Understanding Windows Server 2003 Networks

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Understanding Windows Server 2003 Networks
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Active Directory
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In Windows Server 2003 networks, domains are created in and supported by Microsoft Active Directory directory service. Active Directory is a distributed database and direc tory service that is replicated among all domain controllers on the network. The Active Directory database stores information about network objects including domains, com puters, users, and other objects. The distributed nature of Active Directory gives network users access to permitted resources anywhere on the network by using a single logon process. It also provides a single point of administration for all network objects. The term domains is used to refer both to groupings of computers in Active Directory and to hierarchical name suffixes such as microsoft.com in DNS. Remember that Active Directory domains and DNS domains are separate entities governed by separate sys tems. However, to simplify administration, Active Directory domains and their member computers are normally assigned names that match DNS names. In this way, the Active Directory namespace and the DNS namespace overlap. Figure 1-6 illustrates the overlapping Active Directory and DNS namespaces.
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mfg.reskit.com child domain
sales.reskit.com child domain
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server.sales.reskit.com
Figure 1-6 DNS and Active Directory namespaces
Lesson 1
Understanding Network Infrastructures
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Remote Access
Remote access connections must be configured for users who connect to a Windows network from a nonlocal site. The two basic methods for remote access include direct dial-up to a network computer and virtual private networks. For dial-up access, you must not only configure a server to answer incoming calls, but you must also configure authentication, access permissions, and encryption requirements. VPNs enable private connections to cross a public network such as the Internet. These network connections require a different set of configuration procedures for authentication, encryption, and security.
Network Address Translation
Network Address Translation (NAT) is a method of allowing computers internal to your network that have been given nonpublic addresses to communicate with computers on the Internet. When you configure NAT to be used with your network infrastructure, this setup affects the addressing scheme of your network. Internet Connection Sharing (ICS) is a simple implementation of NAT included with recent Windows operating systems.
Certificate Infrastructure
Certificates are used for public key cryptography, which is an important security element in Windows Server 2003 networks. Certificates and public key cryptography are used in many Windows features, such as the Secure Sockets Layer (SSL), the Internet Protocol Security (IPSec) protocol (which encrypts IP communications), smart cards, and the Encrypting File System (EFS, which secures files on a network). The certificate infrastruc ture supported in Windows Server 2003 networks integrates with the Public Key Infra structure (PKI) system: a system of digital certificates, certification authorities, and other registration authorities that authenticate each party involved in an electronic transaction.
Lesson Review
The following questions are intended to reinforce key information presented in this lesson. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter. 1. You are the administrator for your company s network, which includes computers running Windows Server 2003, computers running Microsoft Windows XP Profes sional, and a server running Novell NetWare. The Novell NetWare server has only the IPX/SPX network protocol configured. You want every network computer to be able to access features in the NetWare network operating system, the Windows Server 2003 network operating system, and the Internet. Which protocols must be installed on your network computers
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Understanding Windows Server 2003 Networks
2. Which of the following does not rely on certificates and public key cryptography a. SSL b. EFS c. IPSec d. Workgroup security 3. Which protocol provides names and name resolution for workgroups in Windows a. NetBIOS b. CIFS c. DNS d. Kerberos
Lesson Summary
A network s physical infrastructure is its topology the physical design of the net work along with hardware components such as cabling, routers, switches, bridges, hubs, servers, and hosts. The physical infrastructure also includes tech nologies that define methods of communication over specific types of physical connections. A network s logical infrastructure is made up of the many software elements that connect, manage, and secure hosts on the network. In Windows, network connections are logical interfaces between software (such as protocols) and hardware (such as modems or network adapters). Connections are prioritized and are normally configured with various types of protocols, ser vices, and client software. Protocols are network languages used for computer-to-computer communication. Addressing is the practice of maintaining a system of addresses within your network so that all computers can identify each other. Most networks use a naming system so that people can refer to computers by name instead of by address. Name resolution is the process of translating these names into addresses, and vice versa.
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