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Network Security Masterclass: Practical Techniques & Tools

Network Security Masterclass: Practical Techniques & Tools

Description

This masterclass is your complete guide to understanding and mastering real-world network security. You’ll begin with the foundations of ethical hacking and network infrastructure, then progressively dive into hands-on skills in reconnaissance, port scanning, packet analysis, and firewall detection.

You’ll work with industry-standard tools like Nmap, Wireshark, TcpDump, and Tshark—learning how attackers scan, map, and analyze networks, and how defenders detect and stop them. Each section includes real-life demonstrations to sharpen your skills in traffic inspection, sniffing, and packet dissection across layers.

Whether you’re preparing for a cybersecurity role or expanding your practical skills, this course will walk you through everything from OSI basics to advanced packet forensics.

Course Duration: 19h 30m
Categories Network Engineering

What I will learn?

  • Understand ethical hacking fundamentals and real-world network threats
  • Perform deep packet inspection using Wireshark and Tcpdump
  • Analyze TCP, UDP, DNS, DHCP, and HTTP traffic in detail
  • Identify active devices, services, and vulnerabilities with Nmap
  • Perform reconnaissance and gather intelligence from target systems
  • Apply sniffing techniques and interpret packet-level behavior
  • Configure and filter packet captures effectively
  • Detect firewalls and understand evasion techniques
  • Use TShark and command-line tools for professional-grade analysis
  • Handle and assess scanning legality and risk

Requirements

  • Basic understanding of networking (IP, ports, protocols)
  • A computer with Linux or Windows (Kali preferred)
  • Wireshark and Nmap pre-installed (or install during course)
  • Headphones for clear audio analysis walkthroughs
  • Legal responsibility: use tools only in test or authorized environments

🎓 Your Certificate

You can download your official certificate after completing all lessons and quizzes in this course. If your course progress is incomplete, finish the remaining lessons to unlock your certificate.

Get Certificate

Having issues? Contact us at [email protected].

Course Curriculum

Starting Practical with Nmap
This section introduces practical usage of Nmap, one of the most powerful network scanning tools available. You’ll learn how to scan targets, use scripts, detect services and operating systems, and avoid common legal mistakes when using Nmap in real environments.

  • Nmap’s Network Scanning Capabilities
    10:00
  • Beginning to Use NSE Scripts
    10:30
  • Port Scanning on Servers
    07:00
  • Port Scanning Techniques and Interface Selection
    10:00
  • Nmap Using Target List and Exclude List with File
    16:00
  • Nmap Operating System Detection
    11:00
  • Random Port Scanning and Legal Issues
    07:00

Being a Real Nmap Pro
network analyst or penetration tester. You’ll go beyond surface-level scans and into flag manipulation, stealth strategies, detection evasion, and protocol-specific behaviors. This section empowers students to understand what's happening behind the scenes of each scan, enabling more confident, precise, and covert operations in real-world assessments.

Reconnaissance with Nmap
Use Nmap to gather critical intelligence before launching any scan. Identify systems, geolocation, ownership, and routing paths—without touching a single port.

Scanning Web Servers with Nmap
Learn to identify web services, enumerate risks, and discover valuable information through Nmap web scans.

Detecting Firewalls
Learn how to spot and understand the defensive barriers protecting networks.

Introduction to Ethical Hacking and Network Security
Start your cybersecurity journey by understanding the core principles of ethical hacking and the OSI model, the foundation of all network communications. This section introduces what ethical hackers do, why network security is critical, and how layered protocols work together to transmit data.

Packet Analysis and Networking
This section builds your foundational understanding of how data moves across networks and how to observe it through packet analysis. You’ll learn the purpose of packet inspection, how to distinguish between network layers, and how different devices (hubs, switches, routers) affect traffic flow and classification. Perfect for beginners stepping into network security, ethical hacking, or traffic monitoring.

Understanding Layers 1, 2, 3: Hubs, Switches, and Routers
Dive into the first three layers of the OSI model—physical, data link, and network—and see how different devices function at each level. You'll explore the roles of hubs, switches, and routers, how they forward or filter traffic, and how attackers exploit weaknesses in these devices. This lecture includes practical comparisons, topology diagrams, and use cases in both enterprise and home networks. Key topics: OSI Layer 1–3 overview Hubs vs Switches vs Routers MAC addresses, ARP, and IP routing Real-world network setups and attack surfaces Traffic visibility and control at each layer

Sniffing
This section explores sniffing techniques, how data packets are intercepted across networks, and the tools and methods ethical hackers use to analyze traffic. You’ll learn how attackers exploit basic network behaviors and how to replicate these actions in controlled environments.

Getting Started with Wireshark
This section introduces Wireshark, the most powerful and widely used packet analyzer. You'll learn why it's essential for network analysis, how to install it on various systems, set up capture interfaces, and customize it for efficient workflow.

Capturing Packets in Wireshark
In this section, you'll gain full control over capturing network packets in Wireshark. You'll learn how to configure interfaces, apply filters, manage capture settings, and save or merge packet data for later analysis. Mastering these skills will make your packet captures cleaner, more focused, and easier to interpret.

Command-Line Packet Analysis: TcpDump & TShark
This section introduces two of the most powerful command-line tools for packet capture and analysis: TcpDump and TShark. These lightweight utilities are ideal for headless systems, remote forensic tasks, and automated traffic monitoring. You'll learn how to install them, capture traffic, apply filters, and interpret results from the terminal.

Network Layer Structures and Operations
This section dives deep into packet structure and communication behavior across key protocols in the network and transport layers, including ARP, IP, TCP, UDP, DHCP, and HTTP. You'll learn both theory and practical packet-level analysis, preparing you for real-world forensic investigation and traffic dissection.

Advanced Insights with Packet Analysis
This section showcases the power of packet-level analysis in uncovering hidden behaviors, failed attacks, and scanning attempts. You'll learn how to interpret subtle protocol signals and decode intent using Wireshark—proving that in cybersecurity, packets never lie.

Free
Free access this course
  • Level
    All Levels
  • Total Enrolled
    6
  • Duration
    19 hours 30 minutes
  • Last Updated
    December 17, 2025
  • Certificate
    Certificate of completion

Target Audience

  • Aspiring cybersecurity professionals
  • Ethical hackers and penetration testers
  • Computer science and IT students
  • Network administrators and analysts
  • Anyone preparing for CEH, OSCP, or similar certifications

Material Includes

  • Full HD video lectures
  • Wireshark sample capture files (PCAPs)
  • Command-line cheat sheets (Nmap, Tcpdump, TShark)
  • Scanning and sniffing lab instructions
  • Hands-on packet analysis examples

Tags

Network Administration Nmap Wireshark
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