Request for Comments (RFC)
A Request for Comments (RFC) is a formal article from the Internet Engineering Task Force ( IETF ) that is the result of committee drafting and consequent review by concerned parties. Some RFCs are informational in nature. Of those that are projected to become Internet standards, the final version of the RFC becomes the standard and no further comments or variations are permitted. Change can occur, however, through subsequent RFCs that succeed or elaborate on all or parts of previous RFCs
An RFC is authored by engineers and computer scientists in the form of a memorandum recitation methods, behaviors, research, or inventions applicable to the working of the Internet and Internet-connected systems. It is submitted either for peer review or simply to convey new concepts. The IETF assumes some of the proposals published as RFCs as Internet standards.
RFCs were first used during the formation of the ARPANET protocols that came to found what today’s Internet became. They continue to be delivered on an ongoing basis as the technology underlying the Internet grows.
A formal Internet standard is formed when an RFC goes through committee drafting and review until the final version of the RFC is ratified, at which time no further comments or changes are allowed. Other RFCs are not ratified, and instead retain an “informational” or “experimental” status. For example, the original File Transfer Protocol standard was published as RFC 114 in April of 1971.