Nassau Community College Fall 2011 Session 16 Windows 7 Professional DNS & Active Directory Nassau Community College ITE153 – Operating Systems Fall 2011 1 ITE153 - Operating Systems Management

Nassau Community College Fall 2011 Session 16 Windows 7 Professional Configuring TCP/IP Addressing & Name Resolution Nassau Community College ITE153 – Operating Systems Fall 2011 2 ITE153 - Operating Systems Management

Nassau Community College ITE153 – Operating Systems Overview Configuring IP Addresses Troubleshooting IP Addresses Determining TCP/IP Name Resolution Methods Configuring a DNS and WINS Client Connecting to a Remote Host Nassau Community College ITE153 – Operating Systems Fall 2011

Configuring IP Addresses Assigning Static IP Addresses Overview of Dynamic Address Assignment Using DHCP to Automate IP Address Assignments Enabling Alternate IP Configuration Nassau Community College ITE153 – Operating Systems Fall 2011

Assigning Static IP Addresses Client with Static Addressing Specifies 192.168.2.15 Nassau Community College ITE153 – Operating Systems Fall 2011

Overview of Dynamic Address Assignment Alternate static address Automatic Private IP Address DHCP Server Client with Dynamic Addressing Request for IP address Is DHCP available? No Is alternate IP configured? No Automatic Private IP address generates IP address Assign alternate IP address Yes Yes Assign an IP address Nassau Community College ITE153 – Operating Systems Fall 2011

Using DHCP to Automate IP Address Assignments Nassau Community College ITE153 – Operating Systems Fall 2011

Enabling Alternate IP Configuration Nassau Community College ITE153 – Operating Systems Fall 2011

Troubleshooting IP Addresses Using TCP/IP Troubleshooting Utilities Using ipconfig to Troubleshoot IP Addressing Using ping to Troubleshoot IP Addressing Using tracert to See Packet Traversal Nassau Community College ITE153 – Operating Systems Fall 2011

Using TCP/IP Troubleshooting Utilities arp hostname ipconfig ping pathping tracert Nassau Community College ITE153 – Operating Systems Fall 2011

Using ipconfig to Troubleshoot IP Addressing Nassau Community College ITE153 – Operating Systems Fall 2011

Using ping to Troubleshoot IP Addressing Testing IP Configuration Ping 127.0.0.1 (Loopback Address) Ping IP address of the computer Ping IP address of the default gateway Ping IP address of the remote host Nassau Community College ITE153 – Operating Systems Fall 2011

Lab A: Configuring IP Addresses for Windows XP Professional Nassau Community College ITE153 – Operating Systems Fall 2011

Determining TCP/IP Name Resolution Methods Types of Names Mapping Names: Dynamic or Static Tables Dynamic IP Mapping Static IP Mapping Selecting a Name Resolution Method Host Name Resolution Process NetBIOS Name Resolution Process Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College ITE153 – Operating Systems Types of Names Assigned to a computer’s IP address Up to 255 characters in length Can contain alphabetic and numeric characters, hyphens, and periods Together with the domain name creates a fully qualified domain name Host name 16-byte address 15 of the bytes may be used for the name 16th byte is used by the services that a computer offers to the network NetBIOS name Nassau Community College ITE153 – Operating Systems Fall 2011

Mapping Names: Dynamic or Static Tables Host name to IP NetBIOS name to IP Dynamic tables DNS server WINS server Static tables HOSTS file LMHOSTS file Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College ITE153 – Operating Systems Dynamic IP Mapping A system for naming computers and network services Naming system is organized in a hierarchical fashion Maps domain names to IP address Mapping records are stored on a DNS server DNS server Provides a distributed database for registering dynamic mappings of NetBIOS names Maps NetBIOS names to IP addresses WINS server Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College ITE153 – Operating Systems Static IP Mapping Provides name resolution for host name to IP address Multiple host names can be assigned to the same IP address HOSTS file Provides name resolution for NetBIOS name to IP address A Part of the LMHOSTS file is pre-loaded into memory One IP per NetBIOS name; names can be a single device or a group LMHOSTS file Nassau Community College ITE153 – Operating Systems Fall 2011

Selecting a Name Resolution Method DNS is required when: Client is a member of the active directory domain Client needs to communicate over the Internet DNS server WINS is required when: Client is a member of a Windows NT 4.0 or earlier domain Client applications or services require NetBIOS name resolution WINS server Nassau Community College ITE153 – Operating Systems Fall 2011

Host Name Resolution Process LMHOSTS file 9 A Enter command 1 8 Broadcast Local host name 2 3 DNS cache HOSTS file 4 WINS server 7 NetBIOS name cache 6 DNS server 5 Nassau Community College ITE153 – Operating Systems Fall 2011

NetBIOS Name Resolution Process NetBIOS name cache 2 WINS server 3 Broadcast 4 DNS server 7 HOSTS file 6 LMHOSTS 5 Enter command 1 A Nassau Community College ITE153 – Operating Systems Fall 2011

Configuring a DNS and WINS Client Specifying Host Names, Domain Names, and Connection-Specific Names Configuring a DNS Client Specifying Additional DNS Servers Configuring DNS Query Settings Configuring DHCP to Dynamically Update DNS Troubleshooting DNS Name Resolution Configuring a WINS Client Nassau Community College ITE153 – Operating Systems Fall 2011

Specifying Host Names, Domain Names, and Connection-Specific Names Nassau Community College ITE153 – Operating Systems Fall 2011

Configuring a DNS Client Nassau Community College ITE153 – Operating Systems Fall 2011

Specifying Additional DNS Servers Nassau Community College ITE153 – Operating Systems Fall 2011

Configuring DNS Query Settings Nassau Community College ITE153 – Operating Systems Fall 2011

Configuring DHCP to Dynamically Update DNS DHCP registered Client registered DHCP dynamic update Client dynamic update DNS Server DHCP Server Computer1 Static or Dynamic Request for IP address 1 Assign IP address of 192.168.120.133 2 3 DNS database Computer1 192.168.120.133 Nassau Community College ITE153 – Operating Systems Fall 2011

Troubleshooting DNS Name Resolution 1 Use nslookup command 2 Change the host name resolution configuration Nassau Community College ITE153 – Operating Systems Fall 2011

Configuring a WINS Client Manual configuration Automatic configuration DHCP clients DHCP server Nassau Community College ITE153 – Operating Systems Fall 2011

Lab B: Configuring the DNS Client for Windows XP Professional Nassau Community College ITE153 – Operating Systems Fall 2011

Connecting to a Remote Host Working with FTP Working with Telnet Using HyperTerminal Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College ITE153 – Operating Systems Working with FTP Windows Explorer graphical client Command line client Windows XP Professional provides various client FTP interfaces along with the tools for hosting FTP sites by using IIS Nassau Community College ITE153 – Operating Systems Fall 2011

Working with Telnet Telnet client: Telnet server: Issuing UNIX commands UNIX server Telnet server Windows XP Professional Telnet client UNIX workstation Issuing Telnet commands Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College ITE153 – Operating Systems Using HyperTerminal Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College ITE153 – Operating Systems SSH & Putty Secure Shell Host Putty - http://www.putty.org/ Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College ITE153 – Operating Systems Review Configuring IP Addresses Troubleshooting IP Addresses Determining TCP/IP Name Resolution Methods Configuring a DNS and WINS Client Connecting to a Remote Host Nassau Community College ITE153 – Operating Systems Fall 2011

Nassau Community College Homework Fall 2011 Review the Slides Review Lesson 6, 8, & 17 In The Text Try This At Home: Bring Up Windows 7 under VMPlayer Nassau Community College ITE153 – Operating Systems Fall 2011 ITE153 - Operating Systems Management