TCP/IP Deep Dive for Practioners with Wireshark

This hands-on course provides a practical introduction to TCP/IP networking and packet analysis using Wireshark. Participants will learn how modern network communication works at the protocol level and how data moves through enterprise networks. The course focuses on understanding real network traffic, troubleshooting communication issues, and building a solid technical foundation for IT and networking roles.

Throughout the training, participants will use Wireshark to capture, inspect, and analyze  network packets in realistic scenarios. Core networking concepts and protocols are explored through practical examples and guided traffic analysis exercises. Topics include Ethernet communication, ARP, IP addressing and routing, TCP and UDP communication, DNS resolution, DHCP processes, and HTTP-based client-server communication.

Special emphasis is placed on understanding how common network protocols operate “on the wire” and how network behavior can be interpreted through packet analysis. Participants will learn how devices discover each other on the network, establish connections, exchange data, and resolve communication problems using real packet captures and protocol inspection techniques.

The course also introduces practical troubleshooting workflows commonly used by IT  professionals, system administrators, and network engineers. Participants will gain hands-on experience using Wireshark filters, packet inspection features, and traffic analysis methods to identify connectivity problems, protocol errors, and abnormal network behavior.

By the end of the course, participants will have developed a solid understanding of TCP/IP networking fundamentals and practical packet analysis skills that can be directly applied in IT support, system administration, network operations, and entry-level cybersecurity environments.

Introduction to Wireshark and Packet Analysis

• Capturing and Analyzing Traffic with Wireshark

• Introduction to TCP/IP Networking

• Ethernet and MAC Addressing Fundamentals

• ARP and Local Network Communication

• IP Addressing, Routing, and Subnet Basics

• TCP and UDP Communication Principles

• DNS and DHCP Traffic Analysis

• HTTP and Client-Server Communication

• Packet Filtering and Protocol Inspection

• Network Troubleshooting Using Packet Analysis

• Practical Wireshark Exercises and Labs

After completing this course, participants will be able to:

• Understand the fundamentals of TCP/IP networking and packet-based communication

• Use Wireshark to capture, filter, and analyze network traffic

• Identify and analyze common protocols such as Ethernet, ARP, IP, TCP, UDP, DNS, DHCP, and HTTP

• Understand how devices communicate within local and routed networks

• Interpret packet flows and connection behavior using practical traffic analysis techniques

• Apply basic network troubleshooting methods using packet captures and protocol inspection

• Analyze network communication in realistic IT and enterprise environments

This instructor-led training combines technical theory with extensive hands-on exercises and practical packet analysis scenarios. Participants will work directly with Wireshark to capture, inspect, and analyze real network traffic while learning how common network protocols operate in modern IT environments.

The course includes guided demonstrations, interactive discussions, and practical labs focused on protocol analysis, network communication, and troubleshooting techniques. Emphasis is placed on building a strong practical understanding of TCP/IP networking through real packet captures and step-by-step traffic analysis exercises.