If you click on the " Destination" you'll see in the status bar that " ip.dst" is also a display filter keyword. The real clue (for us now) is between the braces, " ip.src" is a display filter keyword. Note the statusbar in screenshot 4, there's this line saying " Source (ip.src), 4 bytes". Click on the " Source:" line below "Internet Protocol". To find out how to filter based on an IP address, I scroll up to the " Internet Protocol Version 4" line in the packet detail section and expand it to show the first level of detail (screenshots 3 and 4). The first way to discover Display Filter keywords is by using the contents of a captured message shown in the "Packet Detail" section (the middle section of a Wireshark window, screenshot 1). They also both show two different ways to discover Display Filter keywords. There are a few ways to accomplish that and I am going to show the two most useful strategies. Now that I know has IP address 2.17.45.15 I want to see all traffic from and to this IP address. But where to start? I don't know where the traffic from Apple is coming from and I don't know where it is going on my computer!īut I do know one thing, I know I was going to the server so the computer must have used DNS to convert to an IP address.įor most protocols Wireshark uses their abbreviation as a keyword in display filters, so let's type dns (in lowercase) in the Display Filter bar just below the Wireshark button bar (second screenshot). These filters allow you to only show packets that match the filter. That is way too many to start looking for the interesting traffic one by one by hand.īringing the number of messages down is done using Display Filters. Looking at the first screenshot I can see I have captured 5254 unique messages. I hope that I have captured all the traffic related to my visit to the Apple website, but how do I find that in the capture I've just made? I could have captured thousands and thousands of messages.
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