Network Working Group Pars Mutaf Internet-Draft Institut National des Intended status: Informational Telecommunications Expires: September 15, 2007 March 14, 2007 Disposable home addresses draft-mutaf-dhoa-00.txt Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on September 16, 2007. Copyright Notice Copyright (C) The IETF Trust (2007). Abstract The "home address" in Mobile IPv6 should be considered as private information, as it allows access to a mobile host regardless of its location. This document presents a discussion of "disposable home addresses" for Mobile IPv6. Mutaf Expires September 16, 2007 [Page 1] Internet-Draft Disposable home addresses March 2007 1. Introduction Inspired from [TDIGITS] [DPN], this document presents a discussion of "disposable home addresses" in Mobile IPv6. A Mobile IPv6 host can have multiple home addresses in the same or different home networks. This has important benefits in terms of privacy and security. A mobile host can configure and distribute different home addresses to different entities. Later, if one of the addresses is abused (for example, for spam, DoS attack, or location discovery), then that home address can be disposed (or, destroyed) by its owner i.e. the mobile host. This means that, the address will be deconfigured by the host and removed from the home network were it was registered. It should be noted that, similarly to disposable phone numbers, disposable home addresses will be shared with "a priori trusted" users, upon user contact (using a technology like Bluetooth), or via e-mail etc. Another possibility for sharing private information is described in [PIQ]. A disposable home address may not be registered to the DNS, it can be given a name that has local significance only by the user who receives it. For example, when Alice gives her disposable home address to Bob, Bob can store the home address under the name "alice". Later, if Bob spams Alice's host, Alice can destroy the home address given to Bob. 2. Security considerations TBD. 3. IANA considerations None. 4. Conclusion This document presented a discussion of disposable home addresses. 5. Informative References [DPN] Disposable phone numbers, URL: http://www.tossabledigits.com/. Mutaf Expires September 16, 2007 [Page 2] Internet-Draft Disposable home addresses March 2007 [TDIGITS] Tossable Digits, URL: http://www.tossabledigits.com/. [PIQ] Mutaf, P., "Private information queries (Problem Statement)", draft-mutaf-piqproblem-00.txt (work in progress), 2007. Author's Address Pars Mutaf Institut National des Telecommunications Email: pars.mutaf@int-evry.fr Mutaf Expires September 16, 2007 [Page 3] Internet-Draft Disposable home addresses March 2007 Full Copyright Statement Copyright (C) The IETF Trust (2007). 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The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Acknowledgment Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA). Mutaf Expires September 16, 2007 [Page 4]