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Filtering out the noise Somewhere in your packet capture, there are packets involved with loading the Wireshark home page—but how do you find and view just those packets out of all the background noise? The simplest and most reliable method is to determine the IP address of the Wireshark website and filter out all the packets except those flowing between that IP address and the IP address of your workstation by using a display filter. The best approach—and the one that you'll likely use as a first step for most of your post-capture analysis work in future—is to investigate a list of all the conversations by IP address and/or hostnames, sorted by the most active nodes, and identify your target hostname, website name, or IP address from this list. From the Wireshark menu, select Conversations from the Statistics menu, and in the Conversations window that opens, select the IPv4 tab at the top. You'll see a list of network conversations identified by Address A and Address B, with columns for total Packets, Bytes, Packets A→B, Bytes A→B, Packets A←B, and Bytes A←B. Scrolling over to the right-hand side of this window, there are Relative Start values. These are the times when each particular conversation was first observed in the capture, relative to the start of the capture in seconds. The next column is Duration, which is how long this conversation persisted in the capture (first to last packet seen).
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owner: lukeavedon - (no access) - 9781783554638-WIRESHARK_ESSENTIALS.pdf, p30


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