IPsec over NAT Justification for UDP Encapsulation

Document Type Expired Internet-Draft (ipsec WG)
Author William Dixon 
Last updated 2001-06-21
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This draft explains the design justification and alternatives for two IPsec over NAT drafts, UDP Encapsulation of IPsec Packets, [Hutt01] and [Kiv00]. This draft sets the requirements for a solution in terms of scenarios in which NAT is used, and NAT operations. This draft is specifies the requirements for IPsec NAT traversal, scenarios these extensions enable, and design rationale for the proposed solution. This draft assumes that the reader is familiar with the interactions of NAT with IPsec documented in [Aboba04].


William Dixon (wdixon@microsoft.com)

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