Skip to main content

Transient pseudo-NAT attacks or how NATs are even more evil than you believed

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Dr. Francis Dupont , Jean-Jacques Bernard
Last updated 2004-06-29
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


When a 'NAT traversal' capability is added to a class of signaling protocols which can control some traffic aggregation points, an attack based on a temporary access to the path followed by messages exists. Mobile IP [1] with NAT traversal [5] or IKE [2] with NAT traversal [6], including the IKEv2 [7] proposal, are potentially affected by this kind of attacks. This document claims this vulnerability is an intrinsic property of the NAT traversal capability, so is another point where the usage of NATs is very damaging.


Dr. Francis Dupont
Jean-Jacques Bernard

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)