ETSI TS 102 232-1-2017 Lawful Interception (LI) Handover Interface and Service-Specific Details (SSD) for IP delivery Part 1 Handover specification for IP delivery (V3 15 1 Include.pdf
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1、 ETSI TS 102 232-1 V3.13.1 (2017-03) Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 1: Handover specification for IP delivery floppy3TECHNICAL SPECIFICATION ETSI ETSI TS 102 232-1 V3.13.1 (2017-03)2 Reference RTS/LI-00142-1 Keywords handover, IP
2、, lawful interception, security ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present doc
3、ument can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In c
4、ase of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the docu
5、ment may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https:/p
6、ortal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be mod
7、ified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit
8、 of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 232-1 V3.13.1 (2017-03)3 Contents Intellectual Property Rights
9、 6g3Foreword . 6g3Modal verbs terminology 6g3Introduction 6g31 Scope 8g32 References 8g32.1 Normative references . 8g32.2 Informative references 10g33 Definitions, symbols and abbreviations . 11g33.1 Definitions 11g33.2 Symbols 11g33.3 Abbreviations . 11g34 General . 13g34.1 Functionality . 13g34.2
10、Intercepted data types . 13g34.2.1 Introduction. 13g34.2.2 Interception at network operator or access provider . 14g34.2.3 Interception at service providers . 14g34.3 Relationship to other standards 14g34.4 Handover for GPRS/UMTS/EPS . 15g34.4.1 PS Access . 15g34.4.2 Applications 16g34.5 Common para
11、meters. 16g35 Headers . 16g35.1 General . 16g35.2 Description and purpose of the header fields . 16g35.2.1 Version 16g35.2.2 LIID 17g35.2.3 Authorization country code. 17g35.2.4 Communication identifier . 17g35.2.5 Sequence number 17g35.2.6 Payload timestamp 18g35.2.7 Payload direction 18g35.2.8 Pay
12、load type 18g35.2.9 Interception type . 19g35.2.10 IRI type . 19g35.2.11 Interception Point Identifier 19g35.2.12 Session direction . 19g35.3 Encoding of header fields . 19g36 Data exchange 20g36.1 Introduction 20g36.2 Handover layer . 20g36.2.1 General 20g36.2.2 Error reporting 21g36.2.3 Aggregatio
13、n of payloads . 22g36.2.4 Sending a large block of application-level data 22g36.2.5 Padding data 22g36.2.6 Payload encryption . 23g36.3 Session layer . 23g36.3.1 General 23g36.3.2 Opening and closing connections . 23g36.3.3 Buffering . 23g3ETSI ETSI TS 102 232-1 V3.13.1 (2017-03)4 6.3.4 Keep-alives
14、. 24g36.3.5 Option negotiation 24g36.3.5.1 Introduction . 24g36.3.5.2 Option negotiation message exchange 25g36.3.6 PDU acknowledgement 26g36.4 Transport layer . 26g36.4.1 Introduction. 26g36.4.2 TCP settings 26g36.4.3 Acknowledging data . 27g36.5 Network layer . 27g37 Delivery networks 27g37.1 Type
15、s of network 27g37.1.1 General 27g37.1.2 Private networks . 27g37.1.3 Public networks with strict control . 28g37.1.4 Public networks with loose control . 28g37.2 Security requirements . 28g37.2.1 General 28g37.2.2 Confidentiality and authentication 28g37.2.3 Integrity 28g37.3 Further delivery requi
16、rements 29g37.3.1 Test data 29g37.3.2 Timeliness. 29g3Annex A (normative): ASN.1 syntax trees . 30g3A.1 ASN.1 syntax tree for HI2 and HI3 headers. 30g3A.2 ASN.1 specification 31g3A.3 Importing parameters from other standards . 40g3Annex B (informative): Requirements . 41g3B.1 Types of intercepted in
17、formation . 41g3B.2 Identification of traffic . 41g3B.3 Performance . 41g3B.4 Timeliness 42g3B.5 Reliability and availability . 42g3B.6 Discarding information. 42g3B.7 Security. 42g3B.8 Other . 43g3Annex C (informative): Notes on TCP tuning 44g3C.1 Implement IETF RFC 5681 44g3C.2 Minimize roundtrip
18、times . 44g3C.3 Enable maximum segment size option . 44g3C.4 Path MTU discovery 44g3C.5 Selective acknowledgement . 44g3C.6 High speed options . 44g3C.7 PUSH flag 45g3C.8 Nagles algorithm 45g3C.9 Buffer size 45g3ETSI ETSI TS 102 232-1 V3.13.1 (2017-03)5 Annex D (informative): IRI-only interception .
19、 46g3D.1 Introduction 46g3D.2 Definition HI information 46g3D.3 IRI deriving 46g3D.4 IRI by post and pre-processing HI3 information 47g3Annex E (informative): Purpose of profiles . 48g3E.0 Background 48g3E.1 Formal definitions 48g3E.2 Purpose of profiles . 48g3Annex F (informative): Traffic manageme
20、nt of the handover interface . 50g3F.0 Rationale . 50g3F.1 Factors to consider . 50g3F.1.0 Background 50g3F.1.1 Burstiness . 50g3F.1.2 Mixed content . 50g3F.1.3 Network facilities for traffic management 51g3F.1.4 Evidentiary considerations . 51g3F.1.5 National considerations 51g3F.2 Traffic manageme
21、nt strategies . 51g3F.3 Bandwidth estimation . 52g3F.4 National considerations 52g3F.5 Implementation considerations . 52g3F.5.1 Volatile versus non-volatile storage . 52g3F.5.2 Maximum buffering time . 53g3F.5.3 Transmission order of buffered data . 53g3F.5.4 Buffer overflow processing 53g3Annex G
22、(normative): Implementation of payload encryption 54g3Annex H (informative): ETSI TS 102 232 family relationship . 55g3Annex I (informative): Option negotiation . 58g3I.0 Summary 58g3I.1 Example use cases 58g3I.1.1 Option negotiation not supported in LGW . 58g3I.1.2 Simple negotiation by both endpoi
23、nts 59g3I.1.3 Simple DF-only option request 60g3I.1.4 Simple LGW-only option request 61g3I.1.5 Complex negotiation 62g3Annex J (normative): Implementation of Integrity Checks 63g3J.1 Definitions 63g3J.2 Process description . 63g3J.3 Example integrity Chain . 64g3Annex K (informative): Change request
24、 history 66g3History 71g3ETSI ETSI TS 102 232-1 V3.13.1 (2017-03)6 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-m
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