How to capture network traffic?

To capture network traffic using Wireshark, follow these steps:

1. Open Wireshark: Launch the Wireshark application on your computer.

2. Select a Network Interface:

   • On the welcome screen, you will see a list of available network interfaces.
   • Choose the appropriate interface (e.g., eth0, eth1, Wi-Fi) that you want to capture traffic from.

3. Start Capturing:

   • Click the Start button (the blue shark fin icon) in the toolbar to begin capturing packets.
   • Wireshark will now capture all network traffic on the selected interface.

4. Generate Traffic (Optional):

   • If you want to capture specific traffic, you may need to generate it. For example, you can open a web browser and visit a website.

5. Stop Capturing:

   • Once you have captured enough data, click the Stop button (the red square icon) in the toolbar to stop the capture.

6. Analyze Captured Data:

   • You can now analyze the captured packets in the main window. Use filters to focus on specific traffic types if needed.

7. Save the Capture (Optional):

   • If you want to save the captured data for later analysis, go to File > Save As and choose a location and file format.

By following these steps, you can effectively capture and analyze network traffic using Wireshark.