Protocol analyzer

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A Protocol analyzer is a piece of software dedicated to the task of finding errors and monitoring the state (and traffic) on a digital network. Sometimes the software runs on a dedicated piece of hardware.

I suggest the following sections:

  Definition

  Actual products e.g. Ethereal: http://www.ethereal.com/

  Functions in a protocol analyzer: Capturing packets
     splitting them into envelopes
     following an exchange on a certain "envelope level"
     find inconsistencies

  Related instruments (oscilloscope, fibre analyzers, cable sonar)

  "Sniffing"

  Security issues

See also