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Wireshark is a free and open-source packet analyzer. It is used for network troubleshooting, analysis, software and communications protocol development, and education. Originally named Ethereal , the project was renamed Wireshark in May 2006 due to trademark issues.
Sniffer: Netscout (formerly Network General) 2013 [11] GUI Proprietary Non-free SteelCentral Transaction Analyzer OPNET Technologies/Riverbed Technology: June 9, 2014 / 17.0.T-PL1 [12] GUI Proprietary: Non-free snoop: Sun Microsystems: December 11, 2006 / Solaris 10 CLI: CDDL: Free tcpdump: The Tcpdump team April 7, 2023 / 4.99.4 [13] CLI: BSD ...
A packet analyzer used for intercepting traffic on wireless networks is known as a wireless analyzer - those designed specifically for Wi-Fi networks are Wi-Fi analyzers. [ a ] While a packet analyzer can also be referred to as a network analyzer or protocol analyzer these terms can also have other meanings.
In promiscuous mode, some software might send responses to frames even though they were addressed to another machine. However, experienced sniffers can prevent this (e.g., using carefully designed firewall settings). An example is sending a ping (ICMP echo request) with the wrong MAC address but the right IP address.
A protocol analyzer is a tool (hardware or software) used to capture and analyze signals and data traffic over a communication channel. Such a channel varies from a local computer bus to a satellite link, that provides a means of communication using a standard communication protocol ( networked or point-to-point ).
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.
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 ...
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.