Observe the traffic captured in the Wireshark Packet List pane. Click Stop capturing packets to stop the Wireshark capture. The domain name is used in this example.į. Type nslookup and press Enter to enter the interactive mode.Į. In the Command Prompt, type ipconfig /flushdns and press Enter to clear the DNS cache.ĭ. Click Start and search for Command Prompt. In this example, Ethernet is the network interface with traffic.ī. Open Wireshark and start a Wireshark capture by double clicking a network interface with traffic. Click Finish to complete the Wireshark install process. Click Next when the installation is complete. Wireshark starts installing its files and a separate window displays with the status of the installation. USBPcap is experimental, and it could cause USB problems on your PC. Do NOT select the checkbox to install USBPcap. Do NOT install USBPcap for normal traffic capture. If your installed version of WinPcap is older than the version that comes with Wireshark, it is recommended that you allow the newer version to be installed by clicking the Install WinPcap x.x.x (version number) check box.įinish the WinPcap Setup Wizard if installing WinPcap and accept the license agreement if necessary. If WinPcap is already installed on your PC, the Install check box will be unchecked. To capture live network data, WinPcap must be installed on your PC. You can change the installation location of Wireshark, but unless you have limited disk space, it is recommended that you keep the default location. Choose your desired shortcut options and click Next. Keep the default settings on the Choose Components window and click Next. Click I Agree when the License Agreement window displays. Continue advancing through the installation process. If this is the first time to install Wireshark, or after you have completed the uninstall process, you will navigate to the Wireshark Setup wizard. Click Yes to uninstall the previous version of Wireshark.į. It is recommended that you remove the old version of Wireshark prior to installing another version. If you already have a copy of Wireshark on your PC, you will be prompted to uninstall the old version before installing the new version. Respond to any security messages that may display on your screen. Double-click the file to start the installation process. The downloaded file is named Wireshark-win64-x.x.x.exe, where x represents the version number. For Windows users, the default location is the Downloads folder.Į. The location of the downloaded file depends on the browser and operating system that you use. After making a selection, the download should start. For instance, if you have a 64-bit PC running Windows, choose Windows Installer (64-bit).ĭ. Choose the software version you need based on your PC’s architecture and operating system. Part 1: Capture DNS Traffic Step 1: Download and install Wireshark.ī. 1 Windows PC with Internet access and Wireshark installed.In this lab, you will install Wireshark on a Windows system and use Wireshark to filter for DNS packets and view the details of both DNS query and response packets. Because Wireshark allows you to view the packet details, it can be used as a reconnaissance tool for an attacker. Wireshark allows you to filter traffic for network troubleshooting, investigate security issues, and analyze network protocols. Wireshark gives a detailed breakdown of the network protocol stack. Wireshark is an open source packet capture and analysis tool.
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