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CN2140 Server II

CN2140 Server II. Kemtis Kunanuraksapong MSIS with Distinction MCT , MCITP, MCTS , MCDST, MCP, A+. Agenda. Chapter 1: Introduction to Networking Concepts Exercise Lab Quiz. TCP/IP Protocol Suite. Transmission Control Protocol/Internet Protocol Subnet

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CN2140 Server II

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  1. CN2140 Server II Kemtis Kunanuraksapong MSIS with Distinction MCT, MCITP, MCTS, MCDST, MCP, A+

  2. Agenda • Chapter 1: Introduction to Networking Concepts • Exercise • Lab • Quiz

  3. TCP/IP Protocol Suite • Transmission Control Protocol/Internet Protocol • Subnet • Subdividing TCP/IP networks into smaller groupings • Subnet mask • Used to identify which network the TCP/IP host resides on • Default gateway • Allows a host to communicate with devices that reside on a remote network or location

  4. IP Addressing • Each IP address consists of two components: • Network address — This portion of the IP address is shared by all TCP/IP hosts on a particular network or subnet. • Host address — This comprises the portion of the IP address that is unique to a particular computer or host. • Both combined form a unique IP address across an entire TCP/IP network

  5. IPv4 Addressing • The most commonly used version used today • Based on 32-bits (four bytes, or octets) • 232 (4,294,967,296) possible addresses • IPv4 addresses are commonly represented using what is called dotted-decimal notation: • 10.27.3.1 • 192.1.120.84 • 192.5.18.102

  6. Classful Addressing • Each network class had a different maximum number of nodes • The first one to four bits identified the network class, and the remaining bits comprised the network and host address fields • Class A • Class B • Class C • See Table 1-2 and 1-3 on Page 4 and 5

  7. Classless Inter-Domain Routing (CIDR) • The number of masked bits is specified with the CIDR notation • Example: • 10.0.0.0/8 • 8 bits masked • 24 bits for host numbering

  8. Classless Addressing Examples • 15.234.48.34/24 • Subnet mask is 255.255.0.0 • Network address is 15.234.48.0 • Host address is 0.0.0.34 • 203.23.47.234/16 • Subnet mask is 255.255.0.0 • Network address is 203.23.0.0 • Host address is 0.0.47.234

  9. Subnetting • Logical partitioning of an organization’s network address range into smaller blocks • Network Address (Enterprise/corporation): • 16.52.0.0/16 • Site 1 has network address of: • 16.52.1.0/24 • Site 2 has network address of: • 16.52.2.0/24

  10. Subnetting Example • Network Address (Enterprise/corporation): 16.52.0.0/16 • Default Subnet mask is 255.255.0.0 • Site 1 has network address of: 16.52.1.0 • With subnetting, the subnet mask becomes 255.255.255.0 • Site 2 has network address of: 16.52.2.0 • With subnetting, the subnet mask becomes 255.255.255.0

  11. Network Address Translation (NAT) • Hosts using private network addresses can communicate with public networks only by using network address translation (NAT), • Enables routing by mapping their private network address to a different, routable network address.

  12. Loopback Address • Specifies itself at address 127.0.0.1

  13. IPv6 Addressing • IPv6 addresses are 128 bits in length and expressed in hexadecimal notation • 2001:0db8:85a3:08d3:13 • 19:8a2e:0370:7334 • If an IPv6 address contains a series of sequential zeroes, the address can be shortened • 2001:0000:0000:0000:0000:0000:0000:7334 • 2001:0:0:0:0:0:0:7334 • 2001::7334

  14. Domain Name System (DNS) • Translates from Host name to IP addresses • HOSTS files also translate from Host name to IP addresses • See Figure 1-1 on Page 7

  15. Traditional Top-Level Domain Names • .com – Commercial • .edu – Education • .gov – Agencies of U.S. federal government • .net – Computers of network providers and ISPs • .org – nongovernmental and nonprofit organizations

  16. Fully Qualified Domain Name (FQDN) • Describes the exact relationship between a host and its DNS domain • Example: computer1.sales.adatum.com. • Host name is computer1 • In the sales domain, which is in the adatum second-level domain, which is in the .com top-level domain, which is under the “.” root domain.

  17. Static Addresses • When administering TCP/IP hosts, you can assign static IP addresses • Must be configured and maintained manually

  18. Dynamic Host Configuration Protocol (DHCP) • Simplifies the problem by automating the assigning, tracking, and reassigning of IP addresses. • Also to provide other important settings such as the default gateway, subnet mask, DNS, and so on. • DHCP Relay Agent • See Figure 1-2 on Page 11

  19. Dynamic Host Configuration Protocol (DHCP) • DHCPDISCOVER • DHCPOFFER • DHCPREQUEST • DHCPACK

  20. Network Access Protection (NAP) • Windows Server 2008 provides the Network Access Protection platform, which provides a policy enforcement mechanism to control access to a 2008 network • Quarantine the device such as laptop that does not have anti-virus

  21. Assignment • Summarize the chapter in your own word • At least 75 words • Due BEFOREclass start on Thursday • IP Address subnetting • Due BEFORE class over on Thursday • Lab 1 • Due BEFORE class start on Monday

  22. Assignment – IP Address Subnetting • For full credit, you have to legibly demonstrate or illustrate how did you get the answer. • The correct answer must include • Subnet Mask • Highest and lowest assignable IP address • IP Address • 192.168.30.8/21 • 10.3.5.1/5 • 158.10.3.1/14 • 192.10.1.40/28

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