Domain Name System 1 2 Objectives • Discuss the basics of the Domain Name System (DNS) and its terminology • Configure DNS clients • Install a standard DNS server on Server 2008 • Create standard DNS[.]
Domain Name System Objectives • Discuss the basics of the Domain Name System (DNS) and its terminology • Configure DNS clients • Install a standard DNS server on Server 2008 • Create standard DNS zones • Manage your Domain Name System (DNS) environment • Troubleshoot your DNS environment • Describe the new features of DNS in Server 2008 Objectives • Discuss the basics of the Domain Name System (DNS) and its terminology • Configure DNS clients • Install a standard DNS server on Server 2008 • Create standard DNS zones • Manage your Domain Name System (DNS) environment • Troubleshoot your DNS environment • Describe the new features of DNS in Server 2008 Domain Name System • Translate human-readable host names to IP Address • Assists the flow of e-mail – Provides mail exchanger records that tell a Simple Mail Transfer Protocol (SMTP) server where to send an e-mail message DNS Terminology • DNS namespace – Organized into the following domains: root domain (.), toplevel domain (TLD), second-level domain, and so on • DNS domain – The portion of the namespace to the right of the host name • Fully qualified domain names – The entire name: host_name.domain_name • • • • Hosts: Computers on internet hosting resources Host name: Not necessary to be the compute name DNS zone: Groups records into zones DNS records: Information in DNS database Host name portion of DNS Domain Domain Portion of DNS Domain DNS Queries in Windows Server 2008 • Iterative query: – Get an answer or Referral • Recursive queries: – Get an answer or No answer Configuring DNS Clients • DNS Client service to perform DNS queries on behalf of the client • DNS servers – Which server client contacts to resolve a name • Server 2008 Supports dynamic updates – Automatically update DNS records – Win 2000, XP & Vista clients perform their own Dynamic DNS updates – During the boot process, the clients contact their DNS server to perform a dynamic update Dynamic DNS and DHCP • DHCP Server can perform dynamic updates for clients • Configured via Scope Properties • Deletes records of clients removed from the domain or whose DHCP leases expire • Scavenging – Remove stale records • DNS Suffix – DNS domain appended to all unqualified name queries, or a query that contains only a host name ... necessary to be the compute name DNS zone: Groups records into zones DNS records: Information in DNS database Host name portion of DNS Domain Domain Portion of DNS Domain DNS Queries in Windows Server... standard DNS server on Server 2008 • Create standard DNS zones • Manage your Domain Name System (DNS) environment • Troubleshoot your DNS environment • Describe the new features of DNS in Server... Domain Name System (DNS) and its terminology • Configure DNS clients • Install a standard DNS server on Server 2008 • Create standard DNS zones • Manage your Domain Name System (DNS) environment