Wireshark Mini Lab

 Welcome to the Wireshark lab! In this lab, I will learn how to use Wireshark, the most popular packet capturing tool in the world.

Wireshark is an open-source packet sniffing tool that allows us to see what's happening on your network at a microscopic level. It can be used on a variety of platforms, including Windows, macOS, and Linux.

To start using Wireshark, I will need to download and install it on my computer. Once it's installed, I  launch the application and start capturing packets. To capture packets, I first need to select the interface that I want to capture from. This could be a physical interface, such as an Ethernet port, or a virtual interface, such as a VPN connection.


Once you have selected an interface, you can begin capturing packets by clicking the "Start" button. As packets are captured, they will be displayed in the main window of the Wireshark application. You can filter the packets that are displayed by using the filter bar at the top of the window.



As you capture packets, you will notice that they are organized into different layers. Wireshark uses a hierarchical display to show you the different layers of the packet, starting with the link layer at the bottom and moving up to the application layer at the top. You can expand and collapse the layers by clicking on the plus and minus signs next to each layer.


In this example I ping in a public network and then filter the DHCP packets


One of the most useful features of Wireshark is its ability to decode the packets that it captures. This means that it can take the raw data in the packet and turn it into something that is easier for humans to read. For example, it can decode HTTP packets and show you the request and response headers, or it can decode SSL packets and show you the certificate information.

In addition to packet decoding, Wireshark also has a number of other capabilities that you can use to analyze your network traffic. These include:

  • Follow stream: This allows you to follow the data stream between two devices and see the traffic in a more readable format.
  • Expert info: This shows you any issues or problems that Wireshark has detected in the packets that it has captured.
  • Statistics: This provides a variety of statistical information about the packets that have been captured, such as the number of packets, the size of the packets, and the protocol distribution.

As can be seen, Wireshark is a powerful and versatile tool that can be used for a variety of purposes. 

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