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The software is available in three versions: the freeware Monitor and two paid for versions, Lite and Pro. [4] Monitor provides real-time monitoring and statistics.Lite provides monitoring and limits, while the Pro version includes all Monitor and Lite features together with additional features including the ability to act as a firewall, remote administration via a webpage, and filtering.
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.
PRTG (Paessler Router Traffic Grapher) is a network monitoring software developed by Paessler GmbH. It monitors system conditions like bandwidth usage or uptime and collect statistics from miscellaneous hosts such as switches, routers, servers, and other devices and applications.
A network tap is a system that monitors events on a local network. A tap is typically a dedicated hardware device, which provides a way to access the data flowing across a computer network. The network tap has (at least) three ports: an A port, a B port, and a monitor port. A tap inserted between A and B passes all traffic (send and receive ...
Network performance could be measured using either active or passive techniques. Active techniques (e.g. Iperf) are more intrusive but are arguably more accurate.Passive techniques have less network overhead and hence can run in the background to be used to trigger network management actions.
Screenshot of Wireshark network protocol analyzer A packet analyzer (also packet sniffer or network analyzer) is a computer program or computer hardware such as a packet capture appliance that can analyze and log traffic that passes over a computer network or part of a network. Packet capture is the process of intercepting and logging traffic. As data streams flow across the network, the ...
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.
The Carnivore system was a Microsoft Windows-based workstation with packet-sniffing software and a removable Jaz disk drive. [4] This computer must be physically installed at an Internet service provider (ISP) or other location where it can "sniff" traffic on a LAN segment to look for email messages in transit. The technology itself was not ...