RFC 6013 · HISTORIC · 2011

TCP Cookie Transactions

Overview

RFC 6013, “TCP Cookie Transactions”, is a Historic document published in January 2011 by W. Simpson. It has been obsoleted by RFC 7805 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

TCP Cookie Transactions (TCPCT) deter spoofing of connections and prevent resource exhaustion, eliminating Responder (server) state during the initial handshake. The Initiator (client) has sole responsibility for ensuring required delays between connections. The cookie exchange may carry data, limited to inhibit amplification and reflection denial of service attacks. This document defines an Experimental Protocol for the Internet community.

Abstract as published in the RFC, via rfc-editor.org.

What “Historic” means

A specification that has been superseded or is otherwise no longer recommended for use.

Read this RFC

The canonical text of RFC 6013 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
Obsoleted by
RFC 7805
Other RFCs from 2011

Who Is Online

In total there are 62 users online: 0 registered, 55 guests and 7 bots.

Most users ever online was 5,555 on 17 Jul 2026, 3:23 am.

Bots: Applebot Baiduspider Bingbot Googlebot Other Bot PetalBot SemrushBot

Users active in the past 15 minutes. Total registered members: 372