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A network emulator mirrors the network which connects end-systems, not the end-systems themselves. Network simulators are typically programs that run on a single computer, take an abstract description of the network traffic such as a flow arrival process, and yield performance statistics such as throughput, delay, loss etc. These products are ...
A common usage is to monitor network traffic by polling a network switch or router interface via Simple Network Management Protocol (SNMP). The Cacti end user front end supports both User and User Groups security models and supports Role Based Access Control (RBAC) for access to not only monitoring data, but various areas of the user interface.
Iftop is a free software command-line system monitor tool developed by Paul Warren. It produces a real-time stream of incoming and outgoing network communications from the operating system iftop is running within. [2] By default, the connections are ordered by bandwidth usage, with only the largest ("top") bandwidth consumers shown.
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] The Zeek project releases the software under the BSD license.
Packet Tracer is a cross-platform visual simulation tool designed by Cisco Systems that allows users to create network topologies and imitate modern computer networks.The software allows users to simulate the configuration of Cisco routers and switches using a simulated command line interface.
Wireshark is very similar to tcpdump, but has a graphical front-end and integrated sorting and filtering options.. Wireshark lets the user put network interface controllers into promiscuous mode (if supported by the network interface controller), so they can see all the traffic visible on that interface including unicast traffic not sent to that network interface controller's MAC address.
Network traffic simulation is a process used in telecommunications engineering to measure the efficiency of a communications network. Overview
In computer network research, network simulation is a technique whereby a software program replicates the behavior of a real network. This is achieved by calculating the interactions between the different network entities such as routers, switches, nodes, access points, links, etc. [1] Most simulators use discrete event simulation in which the modeling of systems in which state variables ...