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Packet capture is the process of intercepting and logging traffic. As data streams flow across the network, the analyzer captures each packet and, if needed, decodes the packet's raw data, showing the values of various fields in the packet, and analyzes its content according to the appropriate RFC or other specifications.
Wireshark uses pcap to capture packets, so it can only capture packets on the types of networks that pcap supports. Data can be captured "from the wire" from a live network connection or read from a file of already-captured packets. Live data can be read from different types of networks, including Ethernet, IEEE 802.11, PPP, and loopback.
tcpdump, a tool for capturing and dumping packets for further analysis, and WinDump, the Windows port of tcpdump. Zeek, an intrusion detection system and network monitoring platform. URL Snooper, locate the URLs of audio and video files in order to allow recording them. WhatPulse, a statistical (input, network, uptime) measuring application.
Omnipeek is a packet analyzer software tool from Savvius, a LiveAction company, [3] for network troubleshooting and protocol analysis. It supports an application programming interface (API) for plugins .
Zeek's event engine analyzes live or recorded network traffic to generate neutral event logs. Zeek uses common ports and dynamic protocol detection (involving signatures as well as behavioral analysis) to identify network protocols. [12] Developers write Zeek policy scripts in the Turing complete Zeek scripting language. By default Zeek logs ...
Packet Decoding is the capture and analysis of the network traffic generated during Packet Play. In order to determine the targeted network's response to the scenario created by Packet Play, the response must be captured by a packet analyzer and decoded according to the appropriate specifications. Depending on the packets sent, a desired ...
tcpdump prints the contents of network packets. It can read packets from a network interface card or from a previously created saved packet file. tcpdump can write packets to standard output or a file. It is also possible to use tcpdump for the specific purpose of intercepting and displaying the communications of another user or computer.
A packet capture appliance is a standalone device that performs packet capture. [1] Packet capture appliances may be deployed anywhere on a network, however, most commonly are placed at the entrances to the network (i.e. the internet connections) and in front of critical equipment, such as servers containing sensitive information.