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Chapter 11: Networking with TCP/IP and the Internet

Chapter 11: Networking with TCP/IP and the Internet. Network+ Guide to Networks Third Edition. Objectives. Discuss methods of network design unique to TCP/IP networks, including subnetting, CIDR, and NAT Describe protocols used between mail clients and mail servers. Objectives (continued).

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Chapter 11: Networking with TCP/IP and the Internet

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  1. Chapter 11: Networking with TCP/IP and the Internet Network+ Guide to Networks Third Edition

  2. Objectives • Discuss methods of network design unique to TCP/IP networks, including subnetting, CIDR, and NAT • Describe protocols used between mail clients and mail servers

  3. Objectives (continued) • Explain the fundamental principles of using a TCP/IP network for packetized voice transmissions • Employ multiple TCP/IP utilities for network discovery and troubleshooting

  4. Designing TCP/IP-Based Networks • Subnetting • Enhance security • Improve performance • Simplify troubleshooting

  5. Designing TCP/IP-Based Networks (continued) • Subnetting • Classful Addressing

  6. Designing TCP/IP-Based Networks (continued)

  7. Designing TCP/IP-Based Networks (continued) • Subnetting • Subnet Masks

  8. Designing TCP/IP-Based Networks (continued)

  9. Designing TCP/IP-Based Networks (continued)

  10. Designing TCP/IP-Based Networks (continued)

  11. Designing TCP/IP-Based Networks (continued) • Subnetting • Reserved Addresses

  12. Designing TCP/IP-Based Networks (continued) • Subnetting • Subnetting Techniques

  13. Designing TCP/IP-Based Networks (continued)

  14. Designing TCP/IP-Based Networks (continued)

  15. Designing TCP/IP-Based Networks (continued) • Subnetting • Calculating Subnets

  16. Designing TCP/IP-Based Networks (continued)

  17. Designing TCP/IP-Based Networks (continued) • Subnetting • Classless Inter-Domain Routing (CIDR) • Classless routing or supernetting

  18. Designing TCP/IP-Based Networks (continued)

  19. Designing TCP/IP-Based Networks (continued)

  20. Designing TCP/IP-Based Networks (continued)

  21. Designing TCP/IP-Based Networks (continued) • Subnetting • Internet Gateways

  22. Designing TCP/IP-Based Networks (continued)

  23. Designing TCP/IP-Based Networks (continued) • Subnetting • Network Address Translation (NAT)

  24. Designing TCP/IP-Based Networks (continued)

  25. Designing TCP/IP-Based Networks (continued) • Subnetting • Intranets and Extranets • Hypertext Markup Language (HTML) • Intranet • Within an enterprise • Extranet • Uses Internet-like services and protocols

  26. Designing TCP/IP-Based Networks (continued) • Simple Mail Transfer Protocol (SMTP) • Protocol responsible for moving messages from one mail server to another over TCP/IP-based networks

  27. TCP/IP Mail Services • MIME (Multipurpose Internet Mail Extensions) • Allows for messages that contain no more than 1000 ASCII characters

  28. TCP/IP Mail Services (continued) • Post Office Protocol (POP) • Application layer protocol used to retrieve messages from a mail server

  29. TCP/IP Mail Services (continued) • Internet Mail Access Protocol (IMAP) • Retrieve all or only a portion of any mail message • Review their messages and delete them while the messages remain on the server • Create sophisticated methods of organizing messages on the server • Share a mailbox in a central location

  30. Additional TCP/IP Utilities • Netstat • -a—Provides a list of all available TCP and UDP connections • -e—Displays details about all the packets • -n—Lists currently connected hosts according to their port and IP address

  31. Additional TCP/IP Utilities (continued) • Netstat (cont.) • -p—Allows you to specify what type of protocol statistics to list • Must be followed by a protocol specification (TCP or UDP) • -r—Provides a list of routing table information • -s—Provides statistics about each packet transmitted by a host, separated according to protocol type (IP,TCP, UDP, or ICMP)

  32. Additional TCP/IP Utilities (continued)

  33. Additional TCP/IP Utilities (continued) • Nbtstat • -a—Displays a machine’s name table given its NetBIOS name • -A—Displays a machine’s name table given its IP address • -r—Lists statistics about names that have been resolved • -s—Displays a list of all the current NetBIOS sessions

  34. Additional TCP/IP Utilities (continued) • Nslookup • Allows you to query the DNS database

  35. Additional TCP/IP Utilities (continued)

  36. Additional TCP/IP Utilities (continued) • Whois • Allows you to query this DNS registration database and obtain information about a domain

  37. Additional TCP/IP Utilities (continued) • Traceroute (Tracert) • -d—Instructs the traceroute command not to resolve IP addresses to host names • -h—Specifies the maximum number of hops • -w—Identifies a timeout

  38. Additional TCP/IP Utilities (continued)

  39. Additional TCP/IP Utilities (continued) • Ipconfig • /?—Displays a list of switches • /all—Displays complete TCP/IP configuration • /release—Releases DHCP • /renew—Renews DHCP

  40. Additional TCP/IP Utilities (continued)

  41. Additional TCP/IP Utilities (continued) • Winipcfg • Windows 9x and Me operating systems

  42. Additional TCP/IP Utilities (continued)

  43. Additional TCP/IP Utilities (continued) • Ifconfig • -a • down • up

  44. Additional TCP/IP Utilities (continued)

  45. Voice Over IP (VOIP) • Voice over IP (VoIP), also known as IP telephony • Lower costs for voice calls • toll bypass • Supply new or enhanced features and applications • Centralize voice and data network management

  46. Voice Over IP (VOIP) (continued)

  47. Voice Over IP (VOIP) (continued)

  48. Voice Over IP (VOIP) (continued)

  49. Chapter Summary • Discuss methods of network design unique to TCP/IP networks, including subnetting, CIDR, and NAT • Describe protocols used between mail clients and mail servers

  50. Chapter Summary (continued) • Explain the fundamental principles of using a TCP/IP network for packetized voice transmissions • Employ multiple TCP/IP utilities for network discovery and troubleshooting

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