From the course: Wireshark: Network Troubleshooting

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Spotting an ARP Storm

Spotting an ARP Storm - Wireshark Tutorial

From the course: Wireshark: Network Troubleshooting

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Spotting an ARP Storm

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- [Instructor] In this segment, we'll take a look at the signature of an ARP storm. I'm here at CloudShark, and I'm going to download this packet capture. We'll go to export, download file, and you can either export a new pcapng with CloudSharp comments and annotations if there are any, or I'm just going to download the original file. And I'll open it in Wireshark. Once in Wireshark, we'll put a filter for ARP. And as you can see, these are all ARP broadcasts. I'll also create an IO graph. Go to statistics and IO graph. It already assumes I'd like to filter on ARP. We'll change the graph name to ARP. And I'll change the color to something bright. We'll also now change the interval to 100 milliseconds. And as you can see, there's a lot of traffic. An ARP storm, or ARP flood can degrade the network. You really should investigate further. Now, how can this happen? Well, it could be the result of a hardware…

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