Uploaded January 2026 | Updated September 2026, 2 hours ago

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We start this DNS series by capturing a real DNS query with Wireshark and breaking it down step by step. You’ll see how a local resolver answers a request and what that exchange looks like at the packet level in Wireshark.

Next episode: the complete DNS resolution path to root, TLD, and Authoritative Name servers.

Download the pcap here: github.com/packetpioneer/youtube/blob/main/dns-lesson1.pcapng

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Hands-On Lab Prep for the WCA - wiresharklabs.org

00:00 Overview
00:27 Why we need DNS
00:59 What is a resolver?
01:47 Why is DNS hierarchical?
02:25 Generating and Capturing DNS
02:40 Packet level DNS
05:17 The DNS Header
06:47 Caching DNS
08:52 What's next in the series?

#Wireshark #WCA #NetworkAnalysis #CyberSecurity #PacketAnalysis #Networking #ITCertification