The Packet Analyzer
Packet analyzers are used to monitor, intercept, and decode data packets as they are transmitted across networks. Packet analyzers can be computer programs (software) or hardware. IT teams use packet analyzers to monitor and filter network traffic. Network analyzers are also valuable tools for testing protocols, diagnosing network problems, identifying configuration issues, and resolving network bottlenecks. Finally, information security teams rely on these tools to discover network misuse, vulnerabilities, malware, and attack attempts.
A packet analyzer has many names besides its previously mentioned one. Network analyzer, protocol analyzer, packet sniffer, Ethernet sniffer or wireless sniffer are all identities of the packet analyzer. A packet analyzer is a "computer program also a piece of computer hardware that can intercept and log traffic passing over a digital network or part of a network. Data streams flow across the network, the sniffer captures each packet and, if needed, content according to the appropriate RFC or other specifications. Packet capture is the process of intercepting and logging traffic." ( Wikipedia,1).
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