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5、1 52 53 54 55 56 57 58 59 60 61 62 63 64 65 IEEE P802.11w/D6.0, March 2008 P802.11wTM/D6.0 Draft Standard for Information Technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Cont
6、rol (MAC) and Physical Layer (PHY) specifications Amendment 4: Protected Management Frames Prepared by: IEEE 802 Committee of the IEEE Computer Society Abstract: This amendment specifies the extensions to IEEE Std 802.11 for Wireless Local Area Networks providing mechanisms for protecting management
7、 frames. Keywords: local area network (LAN) Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:36:42 MSTNo reproduction or networking permitted without license f
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25、ng inquiries into the legal validity or scope of those patents that are brought to its attention. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:36:42 MSTNo
26、reproduction or networking permitted without license from IHS -,-,- Copyright 2008 IEEE. All rights reserved.3 This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
27、46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Introduction The IEEE 802.11 standard has been used in a wide range of mainstream business and personal applications. The success of products has resulted in an increased dependency of IEEE 802.11 as a primary method for the interconnection
28、 of networking equipment. This increased dependence has resulted in a need for increased assurance that the system will not be disrupted by the actions of unauthorized equipment. Such disruption can be caused by malicious systems generating false information and impersonating valid equipment. The cu
29、rrent IEEE 802.11 standard addresses security of data frames but systems are still vulnerable to malicious attack because management frames are unprotected. At the same time, there is an increased dependence on management frames as a result of IEEE 802.11 amendments. The purpose of this amendment is
30、 to reduce the susceptibility of systems to such attack. Notice to users Errata Errata, if any, for this and all other standards can be accessed at the following URL: http:/ standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. Int
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35、 is not part of IEEE Std 802.11-2006, IEEE Standard for Information Technology - Telecommu- nications and Information Exchange Between Systems - LAN/MAN Specific Requirements - Part 11: Wireless Medium Access Control (MAC) and Physical Layer (PHY) specifications. Copyright The Institute of Electrica
36、l and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:36:42 MSTNo reproduction or networking permitted without license from IHS -,-,- 4Copyright 2008 IEEE. All rights reserved. This is an unapproved I
37、EEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Participants The following is a list of officers in the IEEE 802.11 Workin
38、g Group. Stuart J. Kerry, Chair Al Petrick and Harry Worstell, Vice-Chair Tim Godfrey, Secretary At the time this supplement to the standard was submitted to Sponsor Ballot, the Fast Roaming Task Group had the following officers. Jesse Walker, Chair Sandy Turner, Secretary Nancy Cam-Winget1, Technic
39、al Editor Major contributions were received from the following individuals: The following members of the individual, entity, or individual and entity balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. EDITORIAL NOTE - a three-column list of
40、 responding sponsor ballot members will be inserted by IEEE staff. 1The membership also recognizes Jon Edney for being the Task Groups Technical Editor during the groups inception until January 2006. Nancy Cam-Winget Abhijit Choudhury Frank Ciotti Jon Edney Matthew Gast Kevin Hayes Moo Ryong Jeong P
41、hilip MacKenzie Emily Qi Henry Ptasinski Kapil Sood Dorothy Stanley Fabrice Stevens Sandy Turner Jesse Walker Fujio Watanabe Marcus Wong Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not
42、 for Resale, 11/15/2008 20:36:42 MSTNo reproduction or networking permitted without license from IHS -,-,- Copyright 2008 IEEE. All rights reserved.5 This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
43、33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Contents Contents 3.Definitions . 1 4.Abbreviations and acronyms . 2 5.General description 2 5.2 Components of the IEEE 802.11architecture 2 5.2.3Distribution system (DS) concepts 2 5.2.3.2RSNA. 2 5.4
44、Overview of the services 2 5.4.2.4Disassociation 2 5.4.3Access control and data confidentiality services. 2 5.4.3.2Deauthentication 2 5.4.3.3Data confidentiality 3 5.4.3.4Key management . 3 5.4.3.5Data origin authenticity . 4 5.4.3.6Replay detection 4 5.4.3.8Robust Management frame protection. 4 5.8
45、 IEEE 802.11 and IEEE 802.1X . 4 5.8.2Infrastructure functional model overview 4 5.8.2.1AKM operations with AS 4 5.8.2.2Operations with PSK . 6 5.8.6Protection of broadcast and multicast Robust Management frames 6 6.MAC service definition . 7 6.1 Overview of MAC services . 7 6.1.2Security services 7
46、 7.Frame formats 8 7.1 MAC Frame formats 8 7.1.3Frame fields . 8 7.1.3.1Frame control field. 8 7.2 Format of individual frame types. 8 7.2.3Management frames. 8 7.2.3.3Disassociation frame format 8 7.2.3.5Association Response frame format 8 7.2.3.7Reassociation Response frame format. 9 7.2.3.11 Deau
47、thentication 9 7.2.3.12 Action frame format. 10 7.3 Management frame body components. 10 7.3.1Fixed fields 10 7.3.1.7Reason code field. 10 7.3.1.9Status Code field 11 7.3.1.11 Action field 11 7.3.2Information elements. 11 7.3.2.25 RSN information element 12 7.3.2.48 Fast BSS transition information e
48、lement. 17 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:36:42 MSTNo reproduction or networking permitted without license from IHS -,-,- 6Copyright 2008 IEE
49、E. All rights reserved. This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 7.3.2.55 Management MIC information element 18 7.3.2.56 Association Comeback Time in