Wireshark is a network protocol analyzer that allows you to capture and interactively browse the traffic running on a computer network. It provides a detailed view of the data sent over your network.

To find the network traffic packet size counts, follow these steps:

1. Open Wireshark and start a new capture.
2. After capturing the data, go to the main Wireshark window. Here, you will see a list of packets captured.
3. In the packet list, you can see the 'Length' column. This column shows the size of each packet.
4. To get a summary of packet sizes, go to "Statistics" > "Packet Lengths". This will give you a count of how many packets of each size were transmitted.

Yes, you can distinguish how many of each packet size was transmitted on your LAN segment. Wireshark provides detailed statistics about the packet sizes, including the minimum, maximum, and average packet size.

Knowing the packet size distribution on your network is important for several reasons:

1. Network Planning and Troubleshooting: Understanding the packet size distribution can help you plan your network capacity and troubleshoot network problems. For example, if you see a lot of large packets, it might indicate that your network is being used for large file transfers.

2. Performance Optimization: Different packet sizes can have different impacts on network performance. For example, smaller packets can increase the overhead of the network, while larger packets can lead to more packet loss. By understanding the packet size distribution, you can optimize your network for better performance.

3. Security: Unusual packet size distribution can be a sign of a network attack. For example, a large number of very small packets might indicate a denial of service attack. By monitoring the packet size distribution, you can detect and respond to potential security threats.

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