Description

Course: Working with Network Protocols

Course Description:
In this course, you will learn about the key network protocols, their role in data transmission, and how to analyze them using tools like Wireshark. We will cover the protocols that form the foundation of network communication and teach you how to configure and troubleshoot them.

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Module 1: Introduction to Network Protocols

• What is a Network Protocol?
  Understanding the role of protocols in network communication.

• Types of Network Protocols
  An overview of different types of protocols: application, transport, network, data link, and physical layer protocols.

• How Protocols Work
  Basic principles of interaction between protocols and their operation within the TCP/IP stack.

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Module 2: Application Layer Protocols

• HTTP/HTTPS
  Protocols used for web traffic. How web page requests and responses work.

• DNS (Domain Name System)
  A protocol for resolving domain names to IP addresses. Understanding its role in internet functionality.

• SMTP, POP3, IMAP
  Protocols for sending and receiving emails. Setting up and troubleshooting mail services.

• FTP/SFTP
  File Transfer Protocols. Differences between them and securing data transfers.

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Module 3: Transport Layer Protocols

• TCP (Transmission Control Protocol)
  A connection-oriented protocol. Data transmission features, error control, and flow management.

• UDP (User Datagram Protocol)
  A connectionless protocol. Differences from TCP and its use in real-time applications (e.g., video conferencing).

• TCP vs UDP
  When and why to use one protocol over the other.

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Module 4: Network Layer Protocols

• IP (Internet Protocol)
  Structure and format of IP addresses. IPv4 vs IPv6, addressing, and routing.

• ICMP (Internet Control Message Protocol)
  A protocol for sending error messages and network diagnostics (e.g., ping and tracert commands).

• ARP (Address Resolution Protocol)
  A protocol for resolving IP addresses to MAC addresses in a network.

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Module 5: Diagnosing and Analyzing Network Protocols with Wireshark

• Installing and Setting Up Wireshark
  Preparing the tool for packet capture and analysis.

• TCP Traffic Analysis
  How to identify and analyze TCP connections, manage flows, and troubleshoot errors.

• UDP Traffic Analysis
  How to analyze UDP transmissions, their characteristics, and common issues.

• DNS and HTTP Troubleshooting
  Using Wireshark to diagnose issues with DNS queries and HTTP requests.

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Module 6: Network Protocol Security

• Protocol Attacks
  Types of attacks (e.g., DoS, DDoS) and their impact on network protocols.

• Encryption and Protocol Security
  How SSL/TLS secures HTTP (HTTPS), DNS security through DNSSEC, and securing email protocols.

• VPN and Secure Connections
  Protocols used for establishing secure connections (e.g., IPsec, PPTP, L2TP).

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Module 7: Practical Assignments and Tests

• Configuring Protocols on Network Devices
  Configuring routers, DNS servers, mail servers, and FTP servers.

• Practical Use of Wireshark
  Capturing packets and analyzing network traffic to identify problems.

• Knowledge Testing
  Quizzes on the topics covered to assess understanding of network protocols and their operation.

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Course Summary:
By the end of this course, you will have a solid understanding of network protocols, be able to troubleshoot network issues, and configure protocols effectively for optimal network performance.