From the course: Wireshark Essential Training

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Exploring DHCP

Exploring DHCP - Wireshark Tutorial

From the course: Wireshark Essential Training

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Exploring DHCP

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- [Narrator] Dynamic host configuration protocol works at the application layer of the OSI model. DHCP dynamically assigns IP addresses on a local area network. DHCP uses UDP for transport, and the client will use port 68, and the server will use port 67. DHCP uses what we call the DORA process, discover, offer, request, and acknowledge. Let's take a look at the DORA process in Wireshark. I captured this traffic after first going into my command line and I issued an IP config release, and then I went back in and issued IP config renew. So I got rid of my IP address, and then I got a new one. So when we go up here to the display filter, we're looking for DHCP. But the actual filter is bootp. Okay, so now let's take a look at the first one. As you can see that's DHCP release. And that means I'm giving up my IP address. And you're seeing that what we gave up was the .129, and now my client address is 0.0.0.0. All right,…

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