Réseaux
226 documents à télécharger gratuitement
Cours, examens, TD, TP et exercices de réseaux. Thèmes couverts : TCP/IP, routage, Cisco, VLAN, administration réseau.
The document details the process of setting up and configuring a primary and secondary DNS server, including direct and reverse resolution. It describes the appropriate file configurations, DNS zone setup, and resource record management for CNAME and MX entries. Methods for error-checking configurations and testing DNS functionalities using commands like 'dig' and 'ping' are provided. Additionally, it explains how to configure a Linux client and ensures DNS functionality is verified using packet capture tools such as ethereal.
This document outlines a practical exercise focused on setting up and configuring DHCP services on Linux and Windows systems. The methodology involves installing and configuring DHCP servers and clients, testing address distribution mechanism, and handling address leases. It also delves into modifying key server configurations, such as default gateway and DNS addresses, to ensure proper functionality. Simulation tests for reserved IP address assignments are conducted to evaluate server-client interactions.
This document outlines a hands-on lab activity for managing file transfers using vsftpd. It includes two core sequences: testing authenticated FTP access using system accounts and configuring anonymous FTP upload capabilities. Key instructions involve modifying system configurations like vsftpd.conf, setting permissions for directories, and verifying the setup using various tests. The activity emphasizes security and functional checks to ensure proper FTP operations.
This document provides a step-by-step guide for installing and configuring the Apache web server on a GNU/Linux (RedHat) system. Core objectives include basic setups such as managing server configurations, enabling virtual hosts, securing access via authentication, and hosting personal user pages. Advanced topics cover setting directory indexing options, handling scripts like CGI, and configuring server behaviors such as log separation for virtual hosts. The document integrates detailed exercises to help students gain hands-on experience in both system-level configuration and network-level...
This document provides an in-depth guide to socket programming, explaining core principles, key functions, and underlying methodologies. It covers socket creation, binding, and communication protocols like AF_INET and AF_INET6. Practical examples demonstrate the use of functions such as bind(), read(), write(), and recv(). The document serves as a foundational reference for developing network applications using system-level socket APIs.
This document explores the deployment of critical Intranet services within a corporate network. It describes the implementation and configuration of essential services: DNS for domain name resolution, DHCP for dynamic IP address allocation, a web service for HTTP content, Samba for file and printer sharing, and email services for communication. The guide offers precise methodologies for setting up each service, covering both basic and advanced configurations, while emphasizing the importance of resource management and version consistency to enhance intra-organizational communication.
This document outlines an exercise focused on TCP protocol behavior, specifically during data exchange between two devices. It examines scenarios like maximum segment size (MSS) constraints, data loss, retransmission, and acknowledgment mechanisms. The analysis explores concepts such as retransmission timers, positive and negative acknowledgments, and sequence number handling. It provides students with a detailed understanding of TCP's error-handling and flow-control mechanisms.
This document presents a set of exercises focused on computer networking topics such as subnetting, routing, ARP functionality, and ICMP message handling. Exercise 1 discusses IP address allocation, subnet masks, and broadcast addresses. Exercise 2 explores routing tables, datagram transmission through routers, and ARP table states. Exercise 3 analyzes ARP request/reply exchanges during a 'ping' operation and ICMP message handling, including echo request and reply functionalities. The document uses practical scenarios to enforce theoretical concepts.
This document outlines a series of exercises related to IP subnetting, routing, and network communication protocols. It explores subnet mask calculations, routing table configurations, and datagram routing across subnets using Ethernet and ARP protocols. Additionally, it analyzes packet-level communication, including ICMP echo requests and replies, with a detailed examination of ARP and Ethernet frames. These exercises provide a comprehensive understanding of network infrastructure setup and data transfer operations.
This document provides an in-depth examination of TCP/IP protocols and their critical role in interconnecting heterogeneous networks. It elaborates on Internet architecture, routing mechanisms, addressing schemes, and access setups like ADSL and private network configurations. Key methodologies include packet-switching for universal interconnection and routing strategies that rely on hierarchical addressing or peer-to-peer systems. The findings stress the robustness, scalability, and interoperability of TCP/IP, forming the backbone technology of the global Internet.
This document provides a detailed overview of the principles and technologies for interconnecting heterogeneous networks using TCP/IP protocols. It explains key concepts, such as packet-switching, routing, and IP addressing (including classes and subnetting), and touches on practical aspects like connecting to the Internet through various infrastructures (e.g., DSL, ADSL, LAN, RTC). It describes the hierarchical structure of the Internet and elaborates on network services such as email, file transfer, and web access. The document concludes with information about routing mechanisms, private...
The document provides a detailed explanation of the IP protocol, integral to the Internet's functioning. It starts by describing the protocol's role in managing and routing datagrams and introduces the fundamental components such as IP addresses, subnet masks, and default gateways. The concept of datagrams, their structures, and field functionalities like version, header length, service type, and total length is methodically discussed, alongside protocols like ARP, DHCP, and NAT. It emphasizes key concepts like IP address assignment methods and issues related to address resolution and subne...
The document offers an in-depth analysis of Wi-Fi networks, covering standards, equipment, deployment, and configuration. It introduces the IEEE 802.11 standard and explores Wi-Fi network structures and various modalities like Ad Hoc and Infrastructure. The implementation section outlines access point deployment using Cisco devices with configurations through GUI, CLI, and Telnet, culminating in secure configurations such as MAC filtering, WPA, and RADIUS server integration. Practical recommendations for security and performance optimization are provided, targeting real-world Wi-Fi installa...
The document provides an in-depth explanation of Ethernet technology, covering physical and logical network infrastructure, diverse cabling methodologies like coaxial cables, twisted pairs, and optical fiber, and network topologies including bus, ring, star, and extended star. It details access methods such as CSMA/CD and TDMA, emphasizing collision mechanics and resolution. Furthermore, it addresses Layer 2 encapsulation protocols and IEEE standards critical for Ethernet normalization and operational functionality.
This document provides an in-depth overview of Ethernet technology, its evolution across generations, and the methodologies it employs for data transmission. It covers technical LAN characteristics, physical transmission supports like coaxial cables, twisted pairs, and fiber optics, and various network topologies including bus, ring, star, and mesh configurations, highlighting their advantages and drawbacks. The syllabus further elaborates on access methods such as CSMA/CD, TDMA, FDMA, and token methods, outlining their principles and mechanisms to manage collisions and ensure efficient dat...
This document reports on an internship project focused on designing and implementing a web-based application for network supervision. The project involved studying existing systems and specifying requirements to enhance network management. Guided by an academic supervisor, the work presents theoretical foundations and practical insights into the development process.
This document contains exercises related to routing protocols, specifically RIP and OSPF. It provides details about IP addressing, routing information exchange among routers, and the structure of routing tables. There are also questions regarding the identification and types of routers involved.
This document is an exam for a computer networks course at Université de La Manouba for the academic year 2008/2009. It consists of multiple exercises related to networking protocols such as PPPoE and NAT, as well as the analysis of packet fragmentation. Students are asked to explain concepts and provide calculations based on theoretical scenarios.
Ce TP est consacré à l'utilisation conjointe de SQUID et IPTABLES pour mettre en place un serveur proxy transparent et optimiser l'accès Internet. Les objectifs incluent la configuration de cache, l'authentification et le filtrage des accès. Le TP se déroule dans un environnement virtuel avec plusieurs machines configurées pour exécuter ces outils.
Ce document contient des exercices sur l'adressage et le routage IP. Il aborde des concepts tels que les classes d'adresses IP et la définition de sous-réseaux. Le document inclut également des exemples pratiques avec des tables de routage et des calculs de capacité de réseau.
This document contains an exam based on local networks and interconnection, covering STP, message flow, forwarding tables, and maximum available bandwidth between different nodes.
This document contains exam questions related to networking concepts, specifically focusing on CSMA/CD access methods and Ethernet frame handling. It covers theoretical questions about the appropriateness of CSMA/CD for real-time applications and short frames. Additionally, practical exercises are provided for calculating frame sizes and wait times in collision scenarios.
This document outlines the curriculum and structure for the Local Networks module at Ecole Nationale des Sciences de l’Informatique, including course materials, network transmission methods, and standardization protocols. It provides an overview of theoretical concepts and practical components related to network infrastructure and protocols. Key areas of focus include the OSI and TCP/IP models, topologies, and access protocols.
This document provides detailed exercises for analyzing and calculating IP addressing and subnetting configurations. Core topics include determining IP address classes, calculating subnet masks, identifying valid host IDs, and determining subnet ranges. Key methodologies involve binary computations and incremental bit allotments to achieve network segmentation and optimize host capacity.























