Wikipedia
A packet analyzer (also known as a packet sniffer) is a computer program or piece of computer hardware that can intercept and log traffic that passes over a digital network or part of a network. Packet capture is the process of intercepting and logging traffic. As data streams flow across the network, the sniffer captures each packet and, if needed, decodes the packet's raw data, showing the values of various fields in the packet, and …
Packet analyzer - Wikipedia, the free encyclopedia