ITU-T X 1111-2007 Framework of security technologies for home network (Study Group 17)《家庭网络安全技术框架 (研究组17)》.pdf

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1、 International Telecommunication Union ITU-T X.1111TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2007) SERIES X: DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY Telecommunication security Framework of security technologies for home network ITU-T Recommendation X.1111 ITU-T X-SERIES RECO

2、MMENDATIONS DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY PUBLIC DATA NETWORKS Services and facilities X.1X.19 Interfaces X.20X.49 Transmission, signalling and switching X.50X.89 Network aspects X.90X.149 Maintenance X.150X.179 Administrative arrangements X.180X.199 OPEN SYSTEMS INTERCONNEC

3、TION Model and notation X.200X.209 Service definitions X.210X.219 Connection-mode protocol specifications X.220X.229 Connectionless-mode protocol specifications X.230X.239 PICS proformas X.240X.259 Protocol Identification X.260X.269 Security Protocols X.270X.279 Layer Managed Objects X.280X.289 Conf

4、ormance testing X.290X.299 INTERWORKING BETWEEN NETWORKS General X.300X.349 Satellite data transmission systems X.350X.369 IP-based networks X.370X.379 MESSAGE HANDLING SYSTEMS X.400X.499DIRECTORY X.500X.599 OSI NETWORKING AND SYSTEM ASPECTS Networking X.600X.629 Efficiency X.630X.639 Quality of ser

5、vice X.640X.649 Naming, Addressing and Registration X.650X.679 Abstract Syntax Notation One (ASN.1) X.680X.699 OSI MANAGEMENT Systems Management framework and architecture X.700X.709 Management Communication Service and Protocol X.710X.719 Structure of Management Information X.720X.729 Management fu

6、nctions and ODMA functions X.730X.799 SECURITY X.800X.849 OSI APPLICATIONS Commitment, Concurrency and Recovery X.850X.859 Transaction processing X.860X.879 Remote operations X.880X.889 Generic applications of ASN.1 X.890X.899 OPEN DISTRIBUTED PROCESSING X.900X.999 TELECOMMUNICATION SECURITY X.1000

7、For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. X.1111 (02/2007) i ITU-T Recommendation X.1111 Framework of security technologies for home network Summary ITU-T Recommendation X.1111 describes security threats and security requirements to the home network from the

8、point of view of home user and remote user. It excludes the security requirements from the service providers viewpoint. In addition, this Recommendation categorizes security technologies by security functions that satisfy the above security requirements and by the place to which the security technol

9、ogies are applied to in the model of the home network. Finally, the security function requirements for each entity in the network and possible implementation layers for security function are also presented. Source ITU-T Recommendation X.1111 was approved on 13 February 2007 by ITU-T Study Group 17 (

10、2005-2008) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. X.1111 (02/2007) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ

11、of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the top

12、ics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are pre

13、pared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation m

14、ay contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to ex

15、press requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Pr

16、operty Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice

17、of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2007

18、 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. X.1111 (02/2007) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 OSI reference model security architecture definitions . 2 3.2 Mobile

19、security framework definitions 2 3.3 Home network-related definitions 3 3.4 Terms defined in this Recommendation. 3 4 Abbreviations and acronyms 4 5 General home network model for security . 4 6 Characteristics of the home network 6 6.1 Various transmission mediums can be used for the home network .

20、 6 6.2 Home network is a combination of a wireless network and a wired network. 6 6.3 There are many environments from the security point of view 6 6.4 Remote terminals are carried around by remote users . 6 6.5 There are various types of home network devices requiring different levels of security.

21、6 7 Security threats in the home network environment 6 7.1 General security threats from ITU-T Rec. X.1121. 7 7.2 Mobile-oriented security threats from ITU-T Rec. X.1121 . 7 7.3 Security threats from ITU-T Rec. X.805 8 7.4 Relationship of security threats in the home network 8 8 Security requirement

22、s for home network . 11 8.1 Security requirements from ITU-T Recs X.805 and X.1121 . 11 8.2 Relationship between security requirements and security threats 12 9 Security requirements in the entities and relationships of the home network 14 10 Security functions for satisfying security requirements i

23、n the home network . 15 10.1 Security functions from ITU-T Rec. X.1121 15 10.2 Additional security functions . 18 10.3 Relationship between a security requirement and a security function . 18 11 Security technologies for home network 19 12 Security function requirements for home network . 22 Annex A

24、 Type of home network device in ITU-T Rec. J.190 23 Appendix I Type of home network devices in UPnP 25 Bibliography. 26 ITU-T Rec. X.1111 (02/2007) 1 ITU-T Recommendation X.1111 Framework of security technologies for home network 1 Scope The home network is an important part of an end-to-end data co

25、mmunication network. Because it uses various wired or wireless transmission techniques, the threats to the home network could be equivalent to those resulting from either wired network or wireless network. In order to establish the security framework for home network, it is required to identify thre

26、ats to the home network and find out the necessary security functions in the entities of home network model. It is found that the threat model to the home network is basically the same as the threat model described in ITU-T X.1121 “Framework of security technologies for mobile end-to-end data commun

27、ications“. Therefore, ITU-T X.1121 is used as a base Recommendation for setting up the framework for security technologies in the home network. This Recommendation describes security threats and security requirements to the home network from the point of view of home user and remote user. In additio

28、n, this Recommendation categorizes security technologies by security functions that satisfy the above security requirements and by the place to which the security technologies are applied to in the model of the home network. Finally, the security function requirements for each entity in the network

29、and possible implementation layers for security function are also presented. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicate

30、d were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recom

31、mendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T J.190 ITU-T Recommendation J.190 (2002), Architecture of MediaHomeNet that supports cable-based services. ITU-T J.192 ITU-T Rec

32、ommendation J.192 (2005), A residential gateway to support the delivery of cable data services. ITU-T Q.1701 ITU-T Recommendation Q.1701 (1999), Framework for IMT-2000 networks. ITU-T Q.1711 ITU-T Recommendation Q.1711 (1999), Network functional model for IMT-2000. ITU-T Q.1761 ITU-T Recommendation

33、Q.1761 (2004), Principles and requirements for convergence of fixed and existing IMT-2000 systems. ITU-T X.800 ITU-T Recommendation X.800 (1991), Security architecture for Open Systems Interconnection for CCITT applications. ITU-T X.803 ITU-T Recommendation X.803 (1994), Information technology Open

34、Systems Interconnection Upper layers security model. ITU-T X.805 ITU-T Recommendation X.805 (2003), Security architecture for systems providing end-to-end communications. 2 ITU-T Rec. X.1111 (02/2007) ITU-T X.810 ITU-T Recommendation X.810 (1995), Information technology Open Systems Interconnection

35、Security frameworks for open systems: Overview. ITU-T X.1121 ITU-T Recommendation X.1121 (2004), Framework of security technologies for mobile end-to-end data communications. 3 Definitions 3.1 OSI reference model security architecture definitions The following terms are defined in ITU-T X.800: a) ac

36、cess control; b) authentication; c) authentication information; d) authentication exchange; e) authorization; f) availability; g) confidentiality; h) cryptography; i) data integrity; j) data origin authentication; k) encipherment; l) firewall; m) integrity; n) key; o) key exchange; p) key management

37、; q) malware; r) non-repudiation; s) notarization; t) password; u) privacy. 3.2 Mobile security framework definitions The following terms are defined in ITU-T X.1121: a) anonymity; b) shoulder surfing; c) mobile terminal; d) mobile network; e) mobile user; f) application service; g) application serv

38、er; h) application service provider; i) mobile security gateway; ITU-T Rec. X.1111 (02/2007) 3 j) security policy management. 3.3 Home network-related definitions The following terms are defined in ITU-T J.190: a) home access (HA); b) home bridge (HB); c) home client (HC); d) home decoder (HD); e) r

39、esidential gateway; f) home network planes. 3.4 Terms defined in this Recommendation This Recommendation defines the following terms: 3.4.1 secure home gateway: A secure home gateway is a kind of residential gateway seen from the point of view of security, and a point or an entity which forwards dat

40、a packets from open network to internal home network or vice versa, changes security parameter or communication protocol from home network to open network or vice versa, and can perform security-related functions, such as packet filtering, intrusion detection, and policy management function and so o

41、n, according to a given security policy. That is, a secure home gateway comprises more than only firewall. 3.4.2 home device: A home device is an entity (or a home appliance), such as PDA, PC, and TV/VCR, which controls or is controlled by another home device, or provides a service to home users. Th

42、ere are three types of home devices from the security point of view: type A, type B and type C. Type A home device, such as remote controller, PC or PDA, has a controlling capability of the type B home device or type C home device through the presentation page and rich display. Type B home device is

43、 a bridge that connects type C home devices with no communication interface to the home network; basically it communicates with the other devices in the home network on one end and uses some proprietary language on the other end (some examples include proprietary lighting control, etc.). Type C home

44、 device, such as security cameras, A/V devices, etc., only provides some sort of service to the rest of the home devices. Type A or type C home device is called a security console, if it has a security ownership of type B home device or type C home device. Any device in the home network can be class

45、ified into type A, type C or type A/type C according to the functionalities of a device. 3.4.3 home application service provider: A home application service provider (or a home application server) is an entity that connects to the home network for data communication with home device or remote termin

46、al, stores the multimedia content, or provides a variety of the application services to the rest of home devices within home or a remote terminal outside home. 3.4.4 ID certificate: An ID certificate is a message that, at least, states a name or identifies the issuing authority, identifies the subje

47、ct, contains the subjects public key, identifies the validity period of certificate, contains serial number, and is digitally signed by a CA. 3.4.5 device certificate: A device certificate is an X.509 version 3 certificate used for identity authentication of home network device. It may be issued by

48、CA. 3.4.6 authorization certificate: An authorization certificate is a signed object that empowers the subject. It contains at least an issuer and a subject. It can contain validity conditions, authorization and delegation information. In general, certificates can be grouped into three categories: I

49、D certificate which maps the name and a public key of a subject, attribute certificate that maps an authorization and a name of the subject, and authorization certificate that maps an authorization and 4 ITU-T Rec. X.1111 (02/2007) a public key of subject. An authorization or attribute certificate can delegate all the permissions it has received from the issuer or it can delegate along only a portion of that empowerment. 3.4.7 access control list (ACL): An ACL is a protected table residing in memory in the same