IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-07-0341-01-0000 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. 21-07-0341-01-0000

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MIPSHOP WG Refer to 21-07-0325-00-0000_DT_update.ppt 21-07-0341-01-0000

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 21-07-0341-01-0000

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 Several EAP methods were evaluated as possible methods All existing methods do not seem to satisfy the TGu requirements EMU WG is preparing liaison response to TGu 21-07-0341-01-0000