1. 21-07-0341-00-0000 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-07-0341-00-0000 Title: IETF Liaison Report Date Submitted: September 20, 2007 Presented at IEEE 802.21 session #22 in Hawaii Authors or Source(s): Yoshihiro Ohba Abstract: This is IETF liaison report as of September 2007.

2. 21-07-0341-00-0000 IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 http://standards.ieee.org/board/pat/guide.html IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf> Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6 http://standards.ieee.org/board/pat/faq.pdf

3. 21-07-0341-00-0000 MIPSHOP WG Refer to 21-07-0325-00-0000_DT_update.ppt

4. 21-07-0341-00-0000 HOKEY WG New revision of HOKEY re-authentication solution draft draft-ietf-hokey-erx-04.txt Issues: Re-authentication DoS attack in ERX bootstrapping Dependency on key distribution mechanism WGLC will be issued after resolving the issues 3-party key distribution draft There was a consensus in IETF69 meeting to rely on AAA protocol security to distribute keys During consensus call over the mailing list, AAA proxy issue was raised: AAA proxies sitting between HOKEY nodes (NAS, EAP server, HOKEY server) can still see the key Pre-authentication problem state draft draft-ietf-hokey-preauth-ps-00.txt No pre-authentication solution will be defined in HOKEY WG

5. 21-07-0341-00-0000 EMU (EAP Method Update) WG RFC2716bis (EAP-TLS) is ready to go to the IESG and EAP- GPSK should be soon to follow Development of an EAP method with password support Two methods are investigated: EAP-TTLS PP-EAP (draft-zhou-emu-pp-eap-01.txt) There was rough consensus in IETF69 to focus on a password mechanism There was interest in basing this mechanism on EAP-TTLS Liaison presentation from TGu on the requirements for an EAP method for emergency services Issues on server-only certificate-based authentication in terms of security and signaling overhead EMU WG is preparing liaison response to TGu