Network protocol analyzers are devices that are used to monitor the communications of a network. They analyze the headers of all the packets passing through them to see if they can recognize any patterns. Protocol analyzers are also used to diagnose network problems.
In computer networking, a network protocol analyzer is a tool that analyzes the packets transmitted and received on a computer network. It helps a network protocol analyze administrator get a better understanding of the packets on a network and identify problems. One type of network protocol analyzer exists in hardware and another on the software level.