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Ethical Hacking Academy · Lesson

Sniffing Techniques

Gain insight into packet capture tools like Wireshark and their role in analyzing network data.

Sniffing Techniques is a free Ethical Hacking Academy lesson on CoddyKit — lesson 1 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Ethical Hacking Academy learning path, one of 3 lessons in the course, and your progress syncs across the web and the CoddyKit app.

1

Welcome to Sniffing Techniques

Sniffing is the process of intercepting network traffic to analyze or exploit data.

Sniffing Techniques — illustration 1

2

What is Network Sniffing?

It involves capturing network packets to monitor traffic, troubleshoot issues, or perform attacks.

3

Types of Sniffing

  • Passive Sniffing - Captures unencrypted data without altering network traffic.
  • Active Sniffing - Injects packets into the network to manipulate or intercept traffic.

4

Common Sniffing Tools

  • Wireshark - Captures and analyzes network packets.
  • tcpdump - Command-line tool for packet capture.
  • Ettercap - Performs MITM attacks and sniffing.

5

Using Wireshark for Packet Capture

Wireshark allows real-time packet inspection.

wireshark -i eth0 -k

6

Man-in-the-Middle (MITM) Attacks

MITM attacks intercept and alter communication between two parties.

arpspoof -i eth0 -t victim_ip gateway_ip

7

Countermeasures Against Sniffing

  • Use encryption (HTTPS, TLS, VPNs).
  • Implement network segmentation.
  • Monitor for unusual network activity.

8

9

How to Detect Sniffing Attacks

  • Monitor ARP tables for anomalies.
  • Use intrusion detection systems.
  • Scan for rogue network devices.

10

Summary

Sniffing techniques capture network traffic for analysis. Encryption and monitoring can help mitigate risks.

Sniffing Techniques — illustration 10

Frequently asked questions

Is the “Sniffing Techniques” lesson free?

Yes — the full text of “Sniffing Techniques” is free to read here on the web, and the Ethical Hacking Academy course includes 3 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Ethical Hacking Academy course, upgrade to CoddyKit PRO.

What will I learn in “Sniffing Techniques”?

Gain insight into packet capture tools like Wireshark and their role in analyzing network data. You practise Ethical Hacking Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.

Do I need any experience to start Ethical Hacking Academy?

No prior experience is required. Ethical Hacking Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 3, so you can start here or from the beginning and move at your own pace.

How long does the “Sniffing Techniques” lesson take?

Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.

Can I write and run code in this Ethical Hacking Academy lesson?

Yes. Every Ethical Hacking Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.

All lessons in this course

  1. Sniffing Techniques
  2. Session Hijacking
  3. IDS/IPS Evasion
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