NETWORKING HARDWARE by 33r2Uoj7

VIEWS: 9 PAGES: 50

									Network+ Guide to Networks
          Third Edition

             Chapter 11:
Networking with TCP/IP and the Internet
                 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




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            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




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




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




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            Designing TCP/IP-Based
             Networks (continued)




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




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            Designing TCP/IP-Based
             Networks (continued)




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            Designing TCP/IP-Based
             Networks (continued)




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            Designing TCP/IP-Based
             Networks (continued)




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




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




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            Designing TCP/IP-Based
             Networks (continued)




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            Designing TCP/IP-Based
             Networks (continued)




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




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            Designing TCP/IP-Based
             Networks (continued)




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




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            Designing TCP/IP-Based
             Networks (continued)




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            Designing TCP/IP-Based
             Networks (continued)




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            Designing TCP/IP-Based
             Networks (continued)




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




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            Designing TCP/IP-Based
             Networks (continued)




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




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            Designing TCP/IP-Based
             Networks (continued)




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            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


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            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




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




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




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            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




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         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




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       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)


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       Additional TCP/IP Utilities
              (continued)




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         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

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




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       Additional TCP/IP Utilities
              (continued)




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




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         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




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       Additional TCP/IP Utilities
              (continued)




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



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       Additional TCP/IP Utilities
              (continued)




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




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       Additional TCP/IP Utilities
              (continued)




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




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       Additional TCP/IP Utilities
              (continued)




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               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



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            Voice Over IP (VOIP)
                (continued)




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            Voice Over IP (VOIP)
                (continued)




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            Voice Over IP (VOIP)
                (continued)




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            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




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 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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