[LAC-TF] Fwd: I-D Action: draft-ietf-6man-deprecate-atomfrag-generation-00.txt

Fernando Gont fgont at si6networks.com
Thu Nov 13 23:06:49 BRST 2014

FYI, recientemente aceptado:

Esto elimina un vector de ataque, y hace que SIIT (RFC6145) sea mas


-------- Forwarded Message --------
Subject: I-D Action: draft-ietf-6man-deprecate-atomfrag-generation-00.txt
Date: Tue, 11 Nov 2014 12:45:47 -0800
From: internet-drafts at ietf.org
To: i-d-announce at ietf.org
CC: ipv6 at ietf.org

A New Internet-Draft is available from the on-line Internet-Drafts
 This draft is a work item of the IPv6 Maintenance Working Group of the

        Title           : Deprecating the Generation of IPv6 Atomic
        Authors         : Fernando Gont
                          Will(Shucheng) Liu
                          Tore Anderson
	Filename        : draft-ietf-6man-deprecate-atomfrag-generation-00.txt
	Pages           : 17
	Date            : 2014-11-11

   The core IPv6 specification requires that when a host receives an
   ICMPv6 "Packet Too Big" message reporting a "Next-Hop MTU" smaller
   than 1280, the host includes a Fragment Header in all subsequent
   packets sent to that destination, without reducing the assumed Path-
   MTU.  The simplicity with which ICMPv6 "Packet Too Big" messages can
   be forged, coupled with the widespread filtering of IPv6 fragments,
   results in an attack vector that can be leveraged for Denial of
   Service purposes.  This document briefly discusses the aforementioned
   attack vector, and formally updates RFC2460 such that generation of
   IPv6 atomic fragments is deprecated, thus eliminating the
   aforementioned attack vector.  Additionally, it formally updates
   RFC6145 such that the Stateless IP/ICMP Translation Algorithm (SIIT)
   does not rely on the generation of IPv6 atomic fragments, thus
   improving the robustness of the protocol.

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