U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z

protocol

Definition(s):

  A set of rules (i.e., formats and procedures) to implement and control some type of association (e.g., communication) between systems.
Source(s):
NIST SP 800-82 Rev. 2 under Protocol from RFC 4949
NISTIR 8183 under Protocol from NIST SP 800-82, NIST SP 800-82 Rev. 2
NISTIR 8183 Rev. 1 under Protocol from NIST SP 800-82 Rev. 2
NISTIR 8183A Vol. 1 under Protocol from NIST SP 800-82
NISTIR 8183A Vol. 2 under Protocol from NIST SP 800-82
NISTIR 8183A Vol. 3 under Protocol from NIST SP 800-82
CNSSI 4009-2015 [Superseded] from IETF RFC 4949 Ver 2

  A set of rules used by two or more communicating entities that describe the message order and data structures for information exchanged between the entities.
Source(s):
NIST SP 800-175B Rev. 1 under Protocol
NIST SP 800-56B Rev. 2 under Protocol

  A set of rules (i.e., formats and procedures) for communications that computers use when sending signals between themselves.
Source(s):
NISTIR 7316 under Protocol

  A special set of rules used by two or more communicating entities that describe the message order and data structures for information exchanged between the entities.
Source(s):
NIST SP 800-56B Rev. 1 [Superseded] under Protocol