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TCP/IP MODEL

TCP/IP MODEL. What will we do today?. Short overview for OSI model; What is TCP/IP model?; How is divided; The TCP/IP structure; The Application Layer; The Transport Layer; The Internet Layer; The Network Access Layer ; Simple explanation about WIRESHARK;

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TCP/IP MODEL

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  1. TCP/IP MODEL

  2. What will we do today? • Short overview for OSI model; • What is TCP/IP model?; • How is divided; • The TCP/IP structure; • The Application Layer; • The Transport Layer; • The Internet Layer; • The Network Access Layer; • Simple explanation about WIRESHARK; • Demonstration using WIRESHARK; • Summary.

  3. Objectives By the end of this lesson we will: • Know what the TCP/IP model. • How is TCP/IP divided. • Identify the protocols in each layer.

  4. Refresh your mind !! What does “Model” mean? What is the Protocol? OSI model has seven layers

  5. What is TCP/IP Model? Control Protocol Transmission TCP; Protocol IP; Internet

  6. How is divided (Layers) Like most networking software, TCP/IP is modeled in layers. Below, you are going to see a representation of the TCP/IP suite. This model has 4 layers, which are Application, Transport, Internet and Network Access.

  7. The TCP/IP structure

  8. The Application Layer • Features: • File transfer; • Network connection services; • Remote connection services; • Email exchange Protocols: BGP, DNS, FTP, HTTP, IMAP, LDAP, NTP, POP, RIP, RPC, SIP, SMTP, SNMP, SSH, Telnet, TLS/SSL and etc.

  9. The Transport Layer This layer is responsible for providing a reliable exchange of information. Protocols: TCP and UDP.

  10. Protocols: TCP and UDP.

  11. The Internet Layer • The IP (Internet Protocol) is the most important protocol in this layer. • It enables the routing of packets to remote computer. Protocols: IP (IPv4, IPv6), ICMP, ICMPv6 , ARP, RARP, IPsec.

  12. The Internet Layer Protocols: • IP: header carries information on Source IP Address, Destination IP Address, Protocol, routing information, and others; • ARP (Address Resolution Protocol) • RARP (Reverse Address Resolution Protocol) • ICMP (Internet Control Message Protocol) • IPSEC (Internet Protocol Security): is similar to IP but more secure.

  13. The Network Access Layer The network access Layer is the lowest logical layer in the model and provides specifications for how data (bits) should move over the network. The Network Access Layer of the TCP/IP model is associated with: 1. Physical Layer. 2. Data Link Layer. in OSI model. Protocols: Ethernet, PPP, ADSL, ISDN, FDDI.

  14. The Network Access Layer Features: • Ethernet header carries information on Source MAC Address, Destination MAC Address. • MAC (Media Access Control) Address is a unique identifier for each network device; • CSMA/CD: Carrier Sense Multiple Access with Collision Detection; • Signal conversion (analogue/digital); • Error detection on arrival.

  15. Wireshark is a free and open-sourcepacket analyzer. • It is used for network troubleshooting, analysis, software and education

  16. Summary • We have tow models; OSI and TCP/IP. • TCP/IP model has four layers. • Application Layer has many protocols like DNS…etc. • In Transport layer we have TCP and UDP. • The most important protocol in Internet layer is IP; • Network access layer has protocols like Ethernet, ISDN, and PPP.

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