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3 jours

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Théorie des réseaux locaux et protocole TCP/IP

This training offers you the essentials of what you need to know to design and implement TCP / IP networks. He will present to you in a simple and concrete way the principles and techniques of interconnection and administration. It shows you how to set up the main TCP / IP applications.

Duration

.

Audience

Any IT specialist having to buy, install a local network in a TCP / IP environment

Prerequisite

Good knowledge of systems and IT in general.

Objectives

  • • Describe the different hardware elements of a network (transmission media, interconnection)
  • • Describe the lower layers of network communication as well as the protocols used (@MAC, ARP)
  • • Configure the IP configuration of a network station (address, mask, gateway)
  • • Describe how the DHCP protocol works
  • • Describe the principle of host name resolution (Hosts file, DNS)
  • • Use the main network testing and troubleshooting tools
  • • Describe the different types of routing (static, dynamic, NAT)

Information

This training is available online

Detailled program

Network technologies

  • Definition
  • Network scope: PAN, LAN, MAN, WAN

The OSI model

  • Principles
  • Layers
  • Encapsulation
  • The 7 layers

Transmission media

  • Limited supports
  • - Twisted pair
  • - Optical fiber
  • Unlimited supports
  • - Infrared
  • - laser
  • - Radio waves

Switching techniques

  • Switching:
  • - circuits
  • - messages
  • - packages

Network interconnections

  • Bridge
  • Switch
  • Router
  • Bridge

IEEE

  • Historical
  • IEEE 802.2:
  • - General
  • - LLC frame format
  • - Types and classes
  • IEEE 802.3 Ethernet:
  • - General
  • - access methods: CSMA / CD
  • - The standards of the physical layer
  • - Frame format
  • IEEE 802.11 Wi-Fi
  • IEEE 802.15 Bluetooth

MAN / WAN protocols

  • xDSL
  • WiMax
  • Cellular networks
  • ATM
  • SONET & SDH
  • MPLS
  • Remote access and VPN

CP / IP History

  • The ARPANET network
  • Organizations that have contributed to the development of the Internet and TCP / IP

General presentation

  • Application level services
  • Network level services
  • Four-layer model, TCP / IP vs OSI model
  • Main files: hosts, services, protocols ...
  • Bodies managing Internet, IAB, IETF, IRTF standards
  • Notion of RFC

TCP / IP protocol family - overview

  • IP, ARP, RARP, TCP, UDP, FTP, TFTP, TELNET, SMTP, SNMP, NFS, DHCP ...

IP addressing

  • Format of an IP address
  • Address classes (A, B, C, D, E)
  • Network ID and Host ID
  • Multi-domiciled machines, gateways
  • Subnet mask
  • VLSM, supernetting (CIDR)
  • Resolution of IP addresses to physical addresses, ARP
  • Structure of an IP datagram
  • Fragmentation of datagrams and reassembly

IP routing

  • General principle
  • Default route
  • Static routing
  • Dynamic routing (main routing protocols)

DHCP

  • Advantages and disadvantages of dynamic addressing
  • The 4 phases of a DHCP negotiation

The ICMP protocol, error handling and control messages

  • Role of ICMP
  • Structure of an ICMP datagram - types of messages: flow control, redirection, destination unreachable ...
  • The domain name system

    • Name resolution
    • Hosts files
    • Name servers, DNS
    • Type of DNS servers
    • Concept of zones and domains
    • The Internet tree
    • Main types of records in a DNS database

    UDP, transport in datagram mode

    TCP, transport in connected mode

    • Objective and need for reliable transport
    • Three-phase TCP logon
    • Acknowledgment / retransmission mechanism
    • TCP sliding window principle

    TCP / IP application services

    • Telnet, Ftp, Rsh, rlogin, mail ...

    Diagnostic utilities

    • Ping, arp, traceroute ...

    Netbios over TCP / IP

    • Constraints related to Netbios broadcasts
    • Role of the 16th Netbios byte
    • NetBios Name Server (NBNS)

    Presentation of the sockets interface

    • Netstat tool

    Securing the interconnection of networks

    • Filter router
    • Address / port translator
    • Proxy
    • Firewall
    • DMZ


Théorie des réseaux locaux et protocole TCP/IP

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