![]() ![]() ![]() So, if you know what you’re looking for, you can use capture filters to narrow down your search. If Wireshark captures data that doesn’t match the filters, it won’t save them, and you won’t see them. These filters are applied before capturing data. Wireshark filters can be divided into capture and display filters. One of the reasons Wireshark is one of the most famous protocol analyzers today is its ability to apply various filters to the captured packets. Once you’re done capturing packets, you can use the same buttons/shortcuts to stop capturing. While capturing, Wireshark will display all the captured packets in real-time. The second one is tapping “Capture” and then tapping “Start.” The third way to start capturing is by tapping “Ctrl + E.” You can do this in several ways: The first one is by tapping the shark fin icon at the top-left corner. If you want, you can analyze multiple network connections at once by pressing “Shift + Left-click.” You’ll see a list of available network connections you can examine. ![]() However, as good as Wireshark is it's no substitute for having a basic understanding of the protocol(s) you're investigating. Start with just a few of the features and get comfortable with how they work, then move on to other features. In my experience Wireshark is more like a whole toolbox than a single tool, and there are many ways to use it. It's also very useful to learn the basics of both the Capture Filters and Display Filters syntax (they're different), since the better you're able to limit the both the capture and display of packets to just what you're curious about, the easier it'll be to focus on the issue at hand. Starting with a familiar protocol means you're more likely to recognize things and see how they appear in Wireshark, but you'll probably also see details that you weren't aware of. For example, use Wireshark to capture some DNS traffic and follow through the packets, possibly along with a description of how the protocol is supposed to work (Wikipedia often has reasonable descriptions of protocols, along with links to more detailed references if you need them). I'd suggest focusing on a specific protocol you're already comfortable with and using Wireshark to expose the details of how it works. As you've probably noticed, Wireshark has many, many features and learning them all would be quite a task. ![]()
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