File formats:

Status:

PROPOSED STANDARD

Obsoletes:

RFC 1948

Obsoleted by:

RFC 9293

Updates:

RFC 793

Authors:

F. Gont
S. Bellovin

Stream:

IETF

Source:

tcpm (wit)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC6528

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Other actions: Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 6528

Abstract

This document specifies an algorithm for the generation of TCP Initial Sequence Numbers (ISNs), such that the chances of an off-path attacker guessing the sequence numbers in use by a target connection are reduced. This document revises (and formally obsoletes) RFC 1948, and takes the ISN generation algorithm originally proposed in that document to Standards Track, formally updating RFC 793. [STANDARDS-TRACK]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.