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how many seats on a boeing 777-200.A comprehensive packet capture is extremely useful for gaining a comprehensive understanding of what is "blowing up" in the network. In theory, network administratorsTheoretically, a network administrator could perform a network-wide packet capture from anywhere in the network. However, this is not possible because full packet capture requires a lot of human and system resources, not only to collect and store the data, but also to analyze it. That is why, in most cases, network administrators use NetFlow to capture network metadata, as described earlier in this chapter.The tool for capturing packets is called a sniffer. o When someone says "sniffertrace", what they really mean is "capture packets with a packet capture tool". Packet capture is very useful for recreating attack scenarios or performing network forensics. With proper filtering, storage, indexing, and recall capabilities, all packets going in and out of the network can be recorded. There is also the option of rolling or continuous packet capture deployments and the option to search for historical data in storage that is kept for a longer period of time. Broadcast, multicast and other chat network protocols can be filtered out, reducing the size of the amount of data captured.Encrypted packets can have an impact on the analysis of the captured data, as it is not possible to view the actual effective load of some packetsload. Some of the advantages and disadvantages of full packet capture are shown below. The captured data provides a comprehensive record of the historical status of network transactions and attacks, and there is no other source of data that can provide suchNo other data source can provide such detailed information.The captured packets need to be analyzed by someone with analytical skills and an understanding of various network protocols.The capture and storage of packets is resource-intensive, and the amount of resources required depends on the specific network environment.Here are a few examples of commercial and open source packet capture utilities (sniffers). Wireshark, an open source packet capture utility preferred by many professionals.