Open a Command Prompt window and enter ipconfig/all to identify the NIC’s physical address.3. What results did you get?NoteIf you were pulling OUIs from your own Wireshark capture or command-line output, you could copy and paste one or more OUIs into the website search box.You can perform the same lookup using output from a Command Prompt window:2. Type those numbers into Wireshark’s OUI Lookup Tool and click Find. The first three bytes of this address, c8:f7:33, make up the OUI of the device’s manufacturer.

In your browser, go to /tools/oui-lookup Notice earlier in Figure 3-31 that the MAC address of the Source device is located inside the black box. For these situations, use an online MAC address lookup table such as Wireshark’s OUI Lookup Tool.1. In Figure 3-31, you can see where Wireshark has identified the manufacturer-Intel-of a laptop NIC on this network.Figure 3-31 Wireshark capture shows that the destination node’s NIC is made by IntelSource: The Wireshark FoundationSometimes, however, you might be working with physical addresses provided by a command output, or you might need a little more information than what is provided by a Wireshark capture.

When collecting network data on Wireshark using the default settings, some of the OUIs are automatically resolved, telling you the manufacturer of each device. In Chapter 4, you’ll install Wireshark and practice capturing some of the hundreds of packets that cross a network connection every minute.Most of these packets include the MAC addresses of the sender, the receiver, or both. By Network+ Guide to Networks (8th Edition) Edit edition Solutions for Chapter 3 Problem 1HOP: Identify a NIC ManufacturerWireshark is a free, open-source network protocol analyzer that can help demystify network messages and help make the OSI model a little more tangible for you.

Wireshark oui tool