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NetFlow is a feature that was introduced on Cisco routers around 1996 that provides the ability to collect IP network traffic as it enters or exits an interface. By analyzing the data provided by NetFlow, a network administrator can determine things such as the source and destination traffic, class of service, and the causes of congestion.
The audit trail has traditionally been used as historical network traffic measurement data for network forensics [5] and Network Behavior Anomaly Detection (NBAD). [6] Argus has been used extensively in cybersecurity , end-to-end performance analysis, software-defined networking (SDN) research, [ 7 ] and recently a very large number of AI/ML ...
Zeek is a free and open-source software network analysis framework. Vern Paxson began development work on Zeek in 1995 at Lawrence Berkeley National Lab . [ 3 ] Zeek is a network security monitor (NSM) but can also be used as a network intrusion detection system (NIDS). [ 4 ]
Its Flowmon product series consists of network monitoring probes, collectors for flow data (NetFlow, IPFIX and other standards) analysis and software modules which extend probes and collectors by analytical features for network behavior anomaly detection, network awareness application performance management, DDoS detection and mitigation and ...
NBAD is the continuous monitoring of a network for unusual events or trends. NBAD is an integral part of network behavior analysis (NBA), which offers security in addition to that provided by traditional anti-threat applications such as firewalls, intrusion detection systems, antivirus software and spyware-detection software.
Some tools measure traffic by sniffing and others use SNMP, WMI or other local agents to measure bandwidth use on individual machines and routers. However, the latter generally do not detect the type of traffic, nor do they work for machines which are not running the necessary agent software , such as rogue machines on the network, or machines ...
It allows the user to see traffic load on a network over time in graphical form. It was originally developed by Tobias Oetiker and Dave Rand to monitor router traffic, but has developed into a tool that can create graphs and statistics for almost anything. MRTG is written in Perl and can run on Windows, Linux, Unix, Mac OS and NetWare.
In interactive mode, it displays the network status on the user's terminal. In Web mode, it acts as a web server, creating a HTML dump of the network status. It supports a NetFlow-sFlow emitter-collector, a Hypertext Transfer Protocol (HTTP) based client interface for creating ntop-centric monitoring applications, and RRDtool (RRD) for persistently storing traffic statistics.
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