1、 ISO/IEC 24767-1 Edition 1.0 2008-09 INTERNATIONAL STANDARD Information technology Home network security Part 1: Security requirements ISO/IEC 24767-1:2008(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 ISO/IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part
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9、 network security Part 1: Security requirements INTERNATIONAL ELECTROTECHNICAL COMMISSION K ICS 35.200 PRICE CODE ISBN 2-8318-1000-1 2 24767-1 ISO/IEC 2008(E) CONTENTS FOREWORD.4 1 Scope.5 2 Terms, definitions and abbreviations 5 2.1 Terms and definitions 5 2.2 Abbreviations 6 3 Conformance6 4 Secur
10、ity requirements for home electronic systems and networks.6 4.1 General .6 4.2 Home electronic system security .7 4.3 Issues related to HES security but out of scope of this standard11 5 Challenges .12 5.1 General .12 5.2 Always-on challenge .12 5.3 Power line challenge .12 5.4 Wireless challenge 13
11、 5.5 Complex assortment devices challenge.13 5.6 Many and diverse user needs13 5.7 Many and diverse applications.13 6 Security models14 6.1 Introduction .14 6.2 Owner supported single home HES (OSS).14 6.3 Externally supported single home HES (ESS)14 6.4 Externally supported multiple homes HES (ESM)
12、 14 7 Threat analysis.15 7.1 General .15 7.2 Unauthorized access .15 7.3 Malicious software and configuration.16 7.4 Denial of service .17 7.5 Unintended modification of data during communication .17 7.6 User errors17 7.7 System failures .17 7.8 Security service providers .17 8 Security requirements
13、.17 8.1 General .17 8.2 Access control.18 8.3 Data and message authentication19 8.4 Remote access control 19 8.5 Protection of communications19 8.6 Firewalls20 8.7 Virus protection .20 8.8 Protection against denial of service attacks.20 8.9 Auditing.21 8.10 Recovery.21 9 Requirements on security sol
14、utions 21 24767-1 ISO/IEC 2008(E) 3 9.1 General .21 9.2 Different levels of security services for different applications in a home.21 9.3 Convenience .22 Annex A (informative) Comparison between office IT systems and home electronic system security requirements .23 Bibliography24 Figure 1 A concept
15、model of home networks10 Figure 2 Different considerations in different home environments 11 Table 1 Security threats and corresponding defences 18 4 24767-1 ISO/IEC 2008(E) INFORMATION TECHNOLOGY HOME NETWORK SECURITY Part 1: Security requirements FOREWORD 1) ISO (International Organization for Sta
16、ndardization) and IEC (International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards. Their preparation is entrusted to technical committees; any ISO and I
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25、 this publication. Use of the referenced publications is indispensable for the correct application of this publication. 10) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO and IEC shall not be held responsible fo
26、r identifying any or all such patent rights. International Standard ISO/IEC 24767-1 was prepared by subcommittee 25: Interconnection of information technology equipment, of ISO/IEC joint technical committee 1: Information technology. The list of all currently available parts of the ISO/IEC 24767 ser
27、ies, under the general title Information technology Home network security, can be found on the IEC web site. This International Standard has been approved by vote of the member bodies, and the voting results may be obtained from the address given on the second title page. This publication has been d
28、rafted in accordance with the ISO/IEC Directives, Part 2. 24767-1 ISO/IEC 2008(E) 5 INFORMATION TECHNOLOGY HOME NETWORK SECURITY Part 1: Security requirements 1 Scope This part of ISO/IEC 24767 specifies home network security requirements that may come from inside or outside a home. It serves as a f
29、oundation for the development of security services against threats affecting the home environment. The discussions about security requirements in this standard are presented in a relatively informal manner. Although many of the items discussed here are expected to guide the design of security mechan
30、isms applied either inside home networks or through the Internet, they are not considered formal requirements. Various devices are connected to the home network; see Figure 1. The devices of the “living network”, the devices for “A/V entertainment” and the devices for “informational applications” pr
31、ovide different features and performance. This standard provides means to analyse the risks for each networked device and to define its specific “security requirements”. 2 Terms, definitions and abbreviations 2.1 Terms and definitions For the purpose of this document the following definitions apply.
32、 2.1.1 brown goods A/V devices that are mainly used for entertainment, for example, television or DVD recorder 2.1.2 confidentiality property that information is not made available or disclosed to unauthorized individuals, entities or processes 2.1.3 data authentication service used to ensure that t
33、he source of the data claimed by a party to a communication is correctly verified 2.1.4 data integrity property that data has not been altered or destroyed in an unauthorized manner 2.1.5 user authentication service used to ensure that the identity claimed by a party to a communication is correctly
34、verified, whereas an authorization service ensures that the identified and authenticated party is entitled to access a particular device or application on the home network 2.1.6 white goods appliances that are used for daily life, for example, air conditioner, refrigerator and so on 6 24767-1 ISO/IE
35、C 2008(E) 2.2 Abbreviations For the purpose of this document the following abbreviations apply. A/V Audio / Visual DDoS Distributed Denial of Service DoS Denial of Service DRM Digital Rights Management DTV Digital TeleVision DVD Digital Versatile Disc ESM Externally Supported Multiple homes HES ESS
36、Externally Supported Single home HES HES Home Electronic System ICT Information and Communication Technology IP Internet Protocol IPSec IP Security protocol IPv4 Internet Protocol version 4 IPv6 Internet Protocol version 6 IT Information Technology MPEG Moving Picture Expert Group OSS Owner supporte
37、d single home HES PDA Personal Digital Assistant SSL Secure Sockets Layer TCP Transmission Control Protocol TLS Transport Layer Security URL Uniform Resource Locator VCR Video Cassette Recorder VoIP Voice over Internet Protocol 3 Conformance This part of ISO/IEC 24767 provides guidelines and contain
38、s no conformance requirements. 4 Security requirements for home electronic systems and networks 4.1 General With the rapid development of the Internet and related networking technologies, computers in offices as well as homes have been enabled to be connected to each other or to the outside world to
39、 gain lots of resources. Today, the same technologies behind these successes are extending their reach right into our homes to make devices as connectable as ordinary PCs. In doing so, they will not only permit users to monitor and control their home appliances from inside or outside the home, but a
40、lso create new service development and opportunities, such as remote controlling and maintenance of home appliances. This means that a simple home computing environment will evolve into a home network of multiple devices for which security will also be demanded. A HES needs to be trusted by the inha
41、bitants, users and owners of both the home and the system. The purpose of security of the HES is to provide trust in the system. Since many components of HES will be in operation 24 hours a day continuously and automatically exchange information with the outside world, IT security is necessary in or
42、der to maintain the confidentiality, integrity and availability of the data and the system. A well implemented security solution implies for example that only authorized users and processes have access to 24767-1 ISO/IEC 2008(E) 7 the system and the data stored on the system or is communicated to an
43、d from the system, and that only authorized users are able to use and modify the system. Security requirements for HES can be described in several ways. This standard is limited to IT security of the HES. However, information technology security needs to look beyond the system itself, since the home
44、 shall be able to function, although with limited functionality, in case of a break down of the IT system. There exists in an intelligent home features that are normally supported by the HES that shall be possible to function also when the system breaks down. In such cases one realizes that there ex
45、ist security requirements that cannot be part of the system itself, but that the system shall not prohibit the implementation of fallback solutions. There are several stakeholders in security. Not only inhabitants and owners of the HES have to trust it, but also service providers and content provide
46、rs. These latter have to trust that their offered services and content are only used as authorized by them. However, one of the foundations of the security of a system is that it has to be under the responsibility of a single security manager. It is obvious that this has to be the responsibility of
47、the inhabitants/owners of the system. Whether this is done by him/herself or outsourced is irrelevant. It is still the security manager who has the responsibility. The way service and content providers trust that the HES and its users handle their services and content correctly is reduced to a contr
48、actual issue. The contract may, for example, state functions, components or processes that shall be supported by the HES. It is not expected that a single architecture of HES can support all types of homes. Each model might have a different set of security requirements. Three different models of des
49、igning a HES will be described, each with a different set of security requirements. It is obvious that some security requirements are seen as more important than others. Thus, it can be seen that the support of some countermeasures will be optional. Furthermore, countermeasures can be of different quality and cost. Also, the management and maintenance efforts of these countermeasures can require different skills. This standard tries to explain the reasons for the listed security requirements and thus allow the desi
