1. ITMT 1371 - Windows 7 Configuration Chapter 5 – Connecting to a Network ITMT 1371 – Windows 7 Configuration 1

2. Objectives Understand the OSI Reference Model and its relationship to Windows 7 networking Install and configure networking components Use the Network and Sharing Center Configure TCP/IP manually and automatically Use TCP/IP tools to troubleshoot network connectivity problems ITMT 1371 – Windows 7 Configuration 2

3. OSI Reference Model ITMT 1371 – Windows 7 Configuration 3 Network Protocol: A network protocol defines rules and conventions for communication between network devices. Protocols for computer networking all generally use packet switching techniques to send and receive messages in the form of packets.

4. OSI Reference Model The Upper Layers – Application, Presentation, Session Transport Layer – Connection-oriented protocol – Connectionless protocol – Port and Socket Well-know port number Ephemeral port number – Data Encapsulation ITMT 1371 – Windows 7 Configuration 4

5. OSI Reference Model Network Layer – TCP/IP – IP Routing – IPv4 Addressing – IPv6 Addressing – DNS Name Resolution – Data Encapsulation ITMT 1371 – Windows 7 Configuration 5

6. OSI Reference Model Data-Link Layer – Package-switching-networks – Data encapsulation – Media Access Control (MAC) Physical Layer – Hardware Cable – Unshielded twisted pair (UTP) cable ITMT 1371 – Windows 7 Configuration 6

7. Installing Network Support Default networking components installed: – Client for Microsoft Networks – QoS Packet Scheduler – File and Printer Sharing for Microsoft Networks – Internet Protocol Version 6 (TCP/IPv6) – Internet Protocol Version 4 (TCP/IPv4) – Link Layer Topology Discovery I/O Driver and Link Layer Topology Discovery Responder ITMT 1371 – Windows 7 Configuration 7

8. Network Locations Home Work Public Domain ITMT 1371 – Windows 7 Configuration 8

9. Using the Network and Sharing Center ITMT 1371 – Windows 7 Configuration 9 Task List Summary Network Map View Your Active Networks Change Your Networking Settings

10. Understanding Network Discovery Controls Windows Firewall settings A firewall is a barrier between the computer and the network that allows certain types of traffic through, and blocks other traffic. Firewalls filter using TCP/IP characteristics: – IP addresses – Protocol numbers – Port numbers ITMT 1371 – Windows 7 Configuration 10

11. Network Discovery Settings ON or OFF – Controls two functions: 1.Whether the computer can see and be seen by the other systems on the network 2.Whether the computer can share its resources and access shared resources on the network ITMT 1371 – Windows 7 Configuration 11

12. Changing the Network Location ITMT 1371 – Windows 7 Configuration 12

13. Configuring Advanced Sharing ITMT 1371 – Windows 7 Configuration 13

14. Viewing a Connection’s Status ITMT 1371 – Windows 7 Configuration 14

15. Configuring IPv4 Settings ITMT 1371 – Windows 7 Configuration 15

16. Automatic TCP/IP Configuration Uses DHCP – Dynamic Host Configuration Protocol Clients request and receive addressing information from DHCP – Can be server or router ITMT 1371 – Windows 7 Configuration 16

17. Manual TCP/IP Configuration Manually enter information into all fields in the TCP/IP Properties dialog box Depending on whether you are connected to other networks, you do not have to fill out all fields Minimum requirements: – IP Address – Subnet Mask ITMT 1371 – Windows 7 Configuration 17

18. IPv4 Addressing IP Address — Four sets of numbers between 0 and 255 separated by a dot. Each address is unique worldwide. Subnet Mask — Used for network and host identification. http://www.pantz.org/software/tcpip/subnetchart.html Network identifier Host identifier Example: IP Address 142.204.34.136 Subnet Mask 255.255. 0. 0 ITMT 1371 – Windows 7 Configuration 18

19. IPv4 Addressing cont’d Default Gateway Address — router Private IP Address – LAN – NAT Assigning IP Address: – Manual Configuration – Dynamic Host Configuration Protocol (DHCP) – Automatic Private IP Addressing (APIPA) ITMT 1371 – Windows 7 Configuration 19

20. Using Netsh.exe Syntax: netsh interface ipv4 set address connection_name static ip_address subnet_mask default_gateway An example of an actual command would be as follows: netsh interface ipv4 set address “Local Area Connection” static 192.168.1.23 255.255.255.0 192.168.1.1 ITMT 1371 – Windows 7 Configuration 20

21. Configuring IPv6 Settings ITMT 1371 – Window s7 Configuration 21

22. Configuring IPv6 Settings ITMT 1371 – Windows 7 Configuration 22 IPv6 Address: – 128 bits address – XX:XX:XX:XX:XX:XX:XX:XX Subnet Prefixes – FDC0::02BD/64 IPv6 Address Autoconfiguration – Stateless address autoconfiguration

23. Create a New Network Connection Local network connections are created automatically Manual connections frequently have to be made – Dial up connections ITMT 1371 – Window 7 Configuration 23

24. Network Map Displays a graphical map of the computers on the network and the connection between them ITMT 1371 – Windows 7 Configuration 24

25. Displaying a Network Map Network Discovery must be turned on. If the computer is a member of a Windows domain, group policy must be configured to permit network mapping. Any Windows XP computers on the network must have the LLTD Responder software installed. ITMT 1371 – Windows 7 Configuration 25

26. Running Network Diagnostics ITMT 1371 – Windows 7 Configuration 26 Click on warning icon on network map and Windows Network Diagnostics launches Attempts to discover the cause of the problem and offers possible solutions

27. Windows Network Diagnostics Problems that can be diagnosed: – Broken or detached cable connections – IP Address and Subnet Mask problems – Default gateway problems – DNS and DHCP configuration problems – Networking hardware configuration problems – Internet server addresses and service settings ITMT 1371 – Windows 7 Configuration 27

28. Using TCP/IP Tools Ipconfig.exe Ping.exe Tracert.exe Nslookup.exe Netstat.exe ITMT 1371 – Windows 7 Configuration 28

29. Ipconfig.exe Ipconfig /all Ipconfig /release Ipconfig /renew ITMT 1371 – Windows 7 Configuration 29

30. Ping.exe > Ping target > Ping ip_address > Ping computer_name ITMT 1371 – Windows 7 Configuration 30

31. Tracert.exe Displays the path (list of routers) that TCP/IP packets take to their final destination. Internet is constantly changing, therefore the route displayed may not be accurate. ITMT 1371 – Windows 7 Configuration 31

32. Nslookup.exe Enables you to generate DNS request messages and transmit them to specific DNS servers: > Nslookup DNSname DNSserver ITMT 1371 – Windows 7 Configuration 32

33. Netstat.exe Displays status information about the current network connections and about traffic generated by TCP/IP: NETSTAT [interval][-a][-b][-e][–f] [–n][–o][-p protocol][-r][-s][-t] ITMT 1371 – Windows 7 Configuration 33

34. Skills Summary ITMT 1371 – Windows 7 Configuration 34 Networking Stack IPv4 and IPv6 Network Utilities Command Tools

35. THE END ITMT 1371 – Window 7 Configuration 35