Internet & networking · 1981

RFC 793: Transmission Control Protocol

Jon Postel

Request for Comments 793 · Excerpt · September 1981

Section 3.1 of the Transmission Control Protocol specification, which defines each field of the TCP header and its options.

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Print from: A2
License: Free reproduction (RFC Editor)
Source: rfc-editor.org
Retrieved: 27 September 2026
Language: English
Rights holder: Jon Postel, Editor, Information Sciences Institute, 1981

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RFC Editor plain-text edition. Excerpt: section 3.1 in full, with the preface and the one reference that the section cites; page headers and footers left out, the paragraph of the checksum split by a page break joined again, drawings and tables reproduced unchanged.