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Configuring Name Resolution in Windows Server 2008 Networks

Learn about DNS name resolution, configuring DNS client settings, creating and configuring zones in Windows Server 2008 networks.

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Configuring Name Resolution in Windows Server 2008 Networks

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  1. Chapter 2 Configuring Name Resolution Methods Lecturer : Ms.Trần Thị Ngọc Hoa

  2. Objectives • Understanding Name Resolution in Windows Server 2008 Networks • DNS Name Resolution • Configuring DNS Client Settings • Creating and Configuring Zones Lecturer : Ms.Trần Thị Ngọc Hoa

  3. Name Resolution in Windows 2k8 • Why is name resolution ? • Three name resolution services • DNS – Domain Name Service • Link Local Multicast Name Resolution – LLMNR • NETBIOS – Network Basic Input Output System Lecturer : Ms.Trần Thị Ngọc Hoa

  4. DNS Name Resolution • DNS Name Space • Internet Corporation for Assigned Names and Numbers (ICANN) • Three types of top-level domains exist: • Organizational domains • Geographical domains • Reverse domains Lecturer : Ms.Trần Thị Ngọc Hoa

  5. Domain Names - FQDN • www.howstuffworks.com - a typical name • www.yahoo.com - the world's best-known name • www.mit.edu - a popular EDU name • encarta.msn.com - a Web server that does not start with www • www.bbc.co.uk - a name using four parts rather than three • ftp.microsoft.com - an FTP server rather than a Web server Lecturer : Ms.Trần Thị Ngọc Hoa

  6. DNS Structure • DNS servers • Contains database information about some portion of the DNS domain tree structure • Resolve name resolution queries issued by DNS clients • A server is authoritative for a domain when that server relies on locally hosted database data • DNS zones • a contiguous domain name for which a server is authoritative • Forward lookup zones • Reverse lookup zones Lecturer : Ms.Trần Thị Ngọc Hoa

  7. DNS Structure (cont) • DNS resolvers • Service • Query for information from DNS servers • Resource records • DNS database entries that are used to answer DNS client queries • Example : • A : IPv4 host address • AAAA : IPv6 host address Lecturer : Ms.Trần Thị Ngọc Hoa

  8. Understanding Server Types • Primary servers : • Host primary zone • Central point of update • Newly created zones are this type • Two ways of deployment • Standard : Single point of failure • Active Directory integrated : • Zone data is stored and replicated in Active Directory • Fault tolerance • Domain controller is also the primary DNS server in the domain Lecturer : Ms.Trần Thị Ngọc Hoa

  9. Understanding Server Types (cont) • Secondary servers : • Host secondary zone • Load sharing and backup solution • Stub servers : • Host stub zone • Enable a parent zone to keep an updated list of the name servers available in a child zone • Caching only servers : • Do not host any zones • Queries caching • Minimize name resolution traffic across WAN links Lecturer : Ms.Trần Thị Ngọc Hoa

  10. Understanding Recursion and Iteration • Recursion refers to the process of a DNS server querying other DNS servers on behalf of an original querying client • Iterationrefers to the process of a DNS client making repeated queries to different DNS servers. • Using root hint referrals from the DNS server • WINDOWS\System32\Dn\Cache.dns Lecturer : Ms.Trần Thị Ngọc Hoa

  11. Lab Demo server.cse.hui.edu.vn 192.168.1.254 clnt1.cse.hui.edu.vn 192.168.1.1 clnt2.cse.hui.edu.vn 192.168.1.2 Lecturer : Ms.Trần Thị Ngọc Hoa

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