# DNS Deep Dive & Packet Analysis

> Uncover the internet's phonebook and master the analyst's toolkit. Explore DNS architecture, attacks, and learn to read raw network traffic using Wireshark and tcpdump.

Canonical: https://codelivly.com/rooms/dns-deep-dive-packet-analysis
Last updated: 2026-07-01

| | |
|---|---|
| Level | Beginner |
| Category | Networking |
| Lessons | 5 |
| Estimated time | 30 min |
| XP | 200 |

You have learned how data is addressed, transported, and routed. Now it is time to look under the hood and see the raw data moving across the wire. The DNS Deep Dive & Packet Analysis module transitions you from network theory to hands-on cyber analysis.

First, we will dissect the Domain Name System (DNS), the critical infrastructure that translates human-readable domain names into machine-readable IP addresses. You will learn how DNS resolution works, the different types of records, and how attackers weaponize DNS for data exfiltration and cache poisoning.

Then, you will step into the analyst's seat. We will introduce the industry-standard tools for network forensics: Wireshark and tcpdump. You will learn how to capture traffic, write powerful display filters, and analyze raw PCAP files to uncover hidden malware, identify protocol anomalies, and reconstruct cyber attacks.

By the end of this module, you will possess the practical, hands-on skills required to investigate network incidents, troubleshoot complex connectivity issues, and think like a true network defender.

## Lessons

1. DNS Architecture & Records (30 min)
2. The DNS Resolution Process (30 min)
3. DNS Attacks & Spoofing (30 min)
4. Intro to Packet Analysis & Wireshark (30 min)
5. Command-Line Sniffing with tcpdump (30 min)

## Related

- [Learning path: Networking Fundamentals](https://codelivly.com/learning-paths/networking-fundamentals)
- [All rooms](https://codelivly.com/rooms)