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MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration. Chapter 6 Managing and Administering DNS in Windows Server 2008. Objectives. Describe and install Active Directory Domain Services Manage your Domain Name System (DNS) environment

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Mcts guide to microsoft windows server 2008 network infrastructure configuration

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration

Chapter 6

Managing and Administering DNS in Windows Server 2008


Objectives
Objectives Infrastructure Configuration

  • Describe and install Active Directory Domain Services

  • Manage your Domain Name System (DNS) environment

  • Troubleshoot your DNS environment

  • Manage Windows Internet Name Service

  • Describe the new features of DNS in Windows Server 2008

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Introduction to active directory domain services
Introduction to Active Directory Domain Services Infrastructure Configuration

  • Active Directory (AD) clients

    • Use DNS to locate all the resources available on the network

  • DNS servers you can run in an AD DS environment

    • Standard DNS servers

    • AD DS–integrated DNS servers

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Introduction to active directory domain services continued
Introduction to Active Directory Domain Services (continued) Infrastructure Configuration

  • Activity 6-1: Resetting Network Adapters

  • Time Required: 15 minutes

  • Objective: Reset the network adapters on lab servers

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Using ad ds
Using AD DS Network Infrastructure Configuration

  • AD DS

    • Microsoft’s implementation of a directory services infrastructure

    • Stores attributes, or specific information, for objects within a network

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Using ad ds continued
Using AD DS (continued) Network Infrastructure Configuration

  • Activity 6-2: Installing the AD DS Role on MSN-SRV-0XX

  • Time Required: 10 minutes

  • Objective: Install the AD DS server role

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Using ad ds continued1
Using AD DS (continued) Network Infrastructure Configuration

  • Activity 6-3: Promoting MSN-SRV-0XX to a DC

  • Time Required: 40 minutes

  • Objective: Build the first DC in a domain

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Using ad ds continued2
Using AD DS (continued) Network Infrastructure Configuration

  • Activity 6-4: Reviewing the New DNS Zone Additions

  • Time Required: 10 minutes

  • Objective: Review new zones and records created by the AD DS installation process

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Using ad ds continued3
Using AD DS (continued) Network Infrastructure Configuration

  • Domain controller locator

    • Runs at logon to provide client with location of a DC that can authenticate its requests

  • AD domain names

    • Every AD domain in Windows Server 2008 has a naming convention based on a DNS domain name

  • DNS requirements for AD

    • When a DC is added to a domain, SRV and A records are created to allow clients to find a DC during logon

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Ad integrated dns
AD-Integrated DNS Network Infrastructure Configuration

  • Benefits of AD DNS

    • Faster and more efficient replication

    • Database security

    • Multimaster support for updates and replication

  • Administrators can choose one of the following zone replication options for AD DS DNS zones

    • To all DNS servers in this forest

    • To all DNS servers in this domain

    • To all domain controllers in this domain (for Windows 2000 compatibility)

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Ad integrated dns continued
AD-Integrated DNS (continued) Network Infrastructure Configuration

  • Activity 6-5: Changing the Zone Replication Settings for bentech.local

  • Time Required: 10 minutes

  • Objective: Change replication options for AD DS–integrated zone

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Dns zone layout
DNS Zone Layout Network Infrastructure Configuration

  • AD DS site structure

    • AD DS sites are designed to limit the replication traffic across wide area network (WAN) links

  • Distribution of an IT department

    • How your network is administered helps determine the layout for your DNS zones and servers

  • Forwarding

    • Types: standard and conditional

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Dns zone layout continued
DNS Zone Layout (continued) Network Infrastructure Configuration

  • Activity 6-6: Delegating a DNS Zone to MSN-SC-0XX

  • Time Required: 20 minutes

  • Objective: Delegate control of a DNS zone for a subdomain to another server

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Dynamic dns
Dynamic DNS Network Infrastructure Configuration

  • Allows supported DNS clients to dynamically update their DNS records on a DNS server

  • Allows DNS clients to update their A, AAAA, and PTR records

  • Deletes records of clients removed from the domain or whose DHCP leases expire

  • Scavenging

    • Process within a DNS database that uses time stamps to determine when records can update themselves

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Dynamic dns continued
Dynamic DNS (continued) Network Infrastructure Configuration

  • DHCP configuration

    • By default, DHCP is configured to provide dynamic updates to clients that support this feature

  • DNS configuration

    • Dynamic updates are configured at the DNS zone level

  • Secure and nonsecure updates

    • Secure: Performed only by an authenticated client

    • Nonsecure: Performed by any client

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Dynamic dns continued1
Dynamic DNS (continued) Network Infrastructure Configuration

  • How clients use DNS in an Active Directory environment

    • Failure to point your client to internal DNS servers can cause problems

  • DNS Client Group Policy settings

    • For environments that do not use DHCP or have statically assigned IP addresses, this is a good option for defining DNS suffixes and search orders

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Dynamic dns continued2
Dynamic DNS (continued) Network Infrastructure Configuration

  • Activity 6-7: Changing Group Policy Settings

  • Time Required: 20 minutes

  • Objective: Modify Group Policy settings

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Managing dns
Managing DNS Network Infrastructure Configuration

  • DNS console

    • Main GUI tool used for configuring DNS

    • Provides access to all DNS zones available on a server, along with configuration settings for the DNS role

  • DNS Manager

    • Allows you to add DNS servers

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Configuration settings in the dns console
Configuration Settings in the DNS Console Network Infrastructure Configuration

  • DNS server level

    • Configuration and maintenance tasks you can perform

      • Configure a DNS server

      • Create the default application (Directory Partitions)

      • Create a zone

      • Set aging/scavenging for all zones

      • Scavenge stale resource records

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Configuration settings in the dns console continued
Configuration Settings in the DNS Console (continued) Network Infrastructure Configuration

  • Activity 6-8: Configuring DNS at the Server Level

  • Time Required: 15 minutes

  • Objective: Setting server-level properties

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Configuration settings in the dns console continued1
Configuration Settings in the DNS Console (continued) Network Infrastructure Configuration

  • DNS zone level

    • Level where all DNS zones exist

  • DNS record level

    • Modifying and deleting records

    • Defining security settings on a DNS record

    • Managing scavenging settings for a record

    • Setting record Time to Live

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Configuration settings in the dns console continued2
Configuration Settings in the DNS Console (continued) Network Infrastructure Configuration

  • Activity 6-10: Modifying a DNS Record

  • Time Required: 5 minutes

  • Objective: Modify properties of a DNS record

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Round robin dns
Round-Robin DNS Network Infrastructure Configuration

  • Allows an administrator to configure load balancing of servers based on DNS name resolution information

  • DNScmd

    • Can be used to disable or enable round-robin DNS along with other DNS features

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Round robin dns continued
Round-Robin DNS (continued) Network Infrastructure Configuration

  • Activity 6-11: Setting Up Round-Robin DNS and Creating Records

  • Time Required: 15 minutes

  • Objective: Setting up DNS records for load balancing using round-robin DNS

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Conditional forwarding
Conditional Forwarding Network Infrastructure Configuration

  • Forwarding based on a specific domain name

  • Created in their own location under your server in the DNS console

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Conditional forwarding continued
Conditional Forwarding (continued) Network Infrastructure Configuration

  • Activity 6-12: Creating a Conditional Forwarder for badgerironman.com

  • Time Required: 15 minutes

  • Objective: Create a conditional forwarder in the DNS console

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Conditional forwarding continued1
Conditional Forwarding (continued) Network Infrastructure Configuration

  • DNScmd

    • Command-line tool for performing configuration and maintenance tasks on a DNS server

    • Can be used to:

      • Create and delete DNS zones

      • Add and delete

      • View information about DNS zones and records

      • Change the zone type

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Conditional forwarding continued2
Conditional Forwarding (continued) Network Infrastructure Configuration

  • Activity 6-13: Performing Management Tasks with DNScmd

  • Time Required: 15 minutes

  • Objective: Managing DNS zones with DNScmd

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Troubleshooting dns
Troubleshooting DNS Network Infrastructure Configuration

  • DNS server logs

    • Global Logs folder: contains a subset of the event logs relating specifically to DNS called DNS Events

    • General Tab: DNS Events log file is set to a default size of 16,384 KB

    • Filter Tab: allows you to modify the view of the DNS Server log for better analysis of events

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Troubleshooting dns continued
Troubleshooting DNS (continued) Network Infrastructure Configuration

  • Activity 6-14: Modifying the DNS Server Log Size and Retention Value

  • Time Required: 10 minutes

  • Objective: Modify the DNS Server log settings for your environment

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Troubleshooting dns continued1
Troubleshooting DNS (continued) Network Infrastructure Configuration

  • Activity 6-15: Modifying the DNS Server Log View

  • Time Required: 10 minutes

  • Objective: Modify the DNS Server log view to find the root cause of a network issue

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Command line utilities
Command-Line Utilities Network Infrastructure Configuration

  • Ping

    • You can ping a server by host name or FQDN

  • Ipconfig

    • Commands and switches: ipconfig /all, ipconfig /flushdns, ipconfig /displaydns, ipconfig /registerdns

  • DCDiag

    • Allows you to perform diagnostic queries of your DCs

  • Nslookup

    • Allows you to perform detailed queries for DNS information from the command line

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Command line utilities continued
Command-Line Utilities (continued) Network Infrastructure Configuration

  • Nslookup

    • Noninteractive - allows you to perform a single query from the command line by entering all of the query parameters at once

    • Interactive - allows you to launch nslookup in a command-line shell where you can define parameters one by one

    • Used with debug parameter; provides more detailed information

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Command line utilities continued1
Command-Line Utilities (continued) Network Infrastructure Configuration

  • Activity 6-16: Using Nslookup in Interactive Mode

  • Time Required: 15 minutes

  • Objective: Perform DNS queries with nslookup

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Command line utilities continued2
Command-Line Utilities (continued) Network Infrastructure Configuration

  • Debug log

    • Windows Server 2008 allows you to turn on debug logging for a DNS server

    • Allows you to capture packet data related to the DNS server functionality

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


WINS Network Infrastructure Configuration

  • Microsoft’s technology for resolving NetBIOS names to IP addresses

  • Based on two important pieces

    • The Server service and the Client service

  • WINS server service

    • Responsible for maintaining the WINS database and responding to WINS requests

  • The WINS client service

    • Responsible for initiating WINS queries, client registration, and name renewal

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Wins continued
WINS (continued) Network Infrastructure Configuration

  • Activity 6-17: Installing WINS

  • Time Required: 15 minutes

  • Objective: Install a WINS server on your network

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Wins continued1
WINS (continued) Network Infrastructure Configuration

  • Activity 6-18: Editing the LMHOSTS File

  • Time Required: 15 minutes

  • Objective: Edit a user’s LMHOSTS file

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Wins continued2
WINS (continued) Network Infrastructure Configuration

  • Global name zones (GNZs)

    • Provide single name–to–IP address resolution by creating CNAME records in a special GNZ

    • If a GNZ is created, a DNS server looks to the GNZ first and then to WINS

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Wins continued3
WINS (continued) Network Infrastructure Configuration

  • Activity 6-19: Creating the GNZ

  • Time Required: 15 minutes

  • Objective: Create the GNZ and associated alias records.

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


New dns features
New DNS Features Network Infrastructure Configuration

  • DNS on Server Core

    • You can deploy a single or multirole server running DNS and other services

  • Support for IPv6

    • Windows Server 2008 DNS supports the IPv6 address numbering scheme along with the AAAA resource records

  • Primary Read-Only Zone

    • Read-only domain controllers (RODCs): contain a copy of the AD DS database and can answer client requests

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


New dns features continued
New DNS Features (continued) Network Infrastructure Configuration

  • Activity 6-20: Creating an RODC

  • Time Required: 20 minutes

  • Objective: Create an RODC

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


New dns features continued1
New DNS Features (continued) Network Infrastructure Configuration

  • Link-local multicast name resolution

    • Clients exchange simple messages to verify that they have a unique name on the local subnet

  • DNS client changes

    • Clients periodically perform a check to ensure that they are authenticating with a local DC

    • Clients use LLMNR to resolve names on a local network segment when a DNS server is not available

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


New dns features continued2
New DNS Features (continued) Network Infrastructure Configuration

  • Background zone loading

    • Allows DNS server to handle client requests immediately instead of waiting until the entire DNS zone is loaded

  • GNZ

    • Allows you to host computer name–to–IP address resolution records in their Windows Server 2008 DNS zone

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Summary
Summary Network Infrastructure Configuration

  • In an AD DS environment, you can run two types of DNS servers

    • Standard DNS servers and AD DS DNS–integrated servers

  • AD DS

    • Uses DCs to store all the AD objects and information about an environment

    • Uses a database structure to maintain its objects

  • AD

    • Requires DNS for locating DCs, or the DC locator function

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Summary continued
Summary (continued) Network Infrastructure Configuration

  • Windows Server 2008 DNS implementations support two types of forwarding

    • Standard and conditional

  • Dynamic DNS

    • Allows supported DNS clients to dynamically update their DNS records on a DNS server

  • DNS console

    • Main GUI tool used for managing DNS

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


Summary continued1
Summary (continued) Network Infrastructure Configuration

  • You can configure DNS at the DNS server, zone, or record level

  • During forwarding

    • DNS server sends queries made for DNS zones that do not match its own zone and cache information to another internal or external DNS server

  • Troubleshoot DNS when

    • Your clients are having difficulties connecting to applications or resources

MCTS Guide to Microsoft Windows Server 2008 Network Infrastructure Configuration


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