TCP/IP MODEL   Short overview for OSI model;  What is TCP/IP model?;  How is divided;  The TCP/IP structure;  The Application Layer;  The Transport.

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Presentation transcript:

TCP/IP MODEL

  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. What will we do today?

 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. ObjectivesObjectives

 Refresh your mind !! What is the Protocol? OSI model has seven layers

 What is TCP/IP Model? TCP; TransmissionControlProtocol IP;InternetProtocol

 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. How is divided (Layers)

 Protocols Layers DNS, FTP, HTTP, POP, SMTP,SSH, Telnet Application TCP and UDP Transport IP,, ARP, RARP, IPSEC Internet Ethernet, PPP, ADSL, ISDN Network Access

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

 This layer is responsible for providing a reliable exchange of information. Protocols : TCP and UDP.



  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.

 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.

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

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.

  Wireshark is a free and open-source packet analyzer.free and open-sourcepacket analyzer  It is used for network troubleshooting, analysis, software and educationnetwork

  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. Summary

