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Argus is composed of an advanced comprehensive network flow data generator, the Argus monitor, which processes packets (either capture files or live packet data) and generates detailed network traffic flow status reports of all the flows in the packet stream.
In the field of computer network administration, pcap is an application programming interface (API) for capturing network traffic.While the name is an abbreviation of packet capture, that is not the API's proper name.
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.
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.
Network intelligence (NI) is a technology that builds on the concepts and capabilities of deep packet inspection (DPI), packet capture and business intelligence (BI). It examines, in real time, IP data packets that cross communications networks by identifying the protocols used and extracting packet content and metadata for rapid analysis of data relationships and communications patterns.
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.
The technology traces its roots back over 30 years, when many of the pioneers contributed their inventions for use among industry participants, such as through common standards and early innovation, such as the following: RMON; Sniffer; Wireshark; Essential DPI functionality includes analysis of packet headers and protocol fields.
Marcus Ranum is credited with defining Network forensics as "the capture, recording, and analysis of network events in order to discover the source of security attacks or other problem incidents". [4] Compared to computer forensics, where evidence is usually preserved on disk, network data is more volatile and unpredictable.