1、 ETSI TS 102 232-2 V3.11.1 (2017-11) Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 2: Service-specific details for messaging services TECHNICAL SPECIFICATION ETSI ETSI TS 102 232-2 V3.11.1 (2017-11) 2 Reference RTS/LI-00150-2 Keywords email, ha
2、ndover, interface, IP, Lawful Interception, security, traffic 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 Im
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7、e PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are trademarks of ETSI registered for the benefit of its Membe
8、rs. 3GPPTM and LTE a re trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 102 232-2 V3.11.1 (2017
9、-11) 3 Contents Intellectual Property Rights 6 Foreword. 6 Modal verbs terminology . 6 Introduction 6 1 Scope 7 2 References 7 2.1 Normative references . 7 2.2 Informative references . 9 3 Definitions and abbreviations . 9 3.1 Definitions . 9 3.2 Abbreviations . 10 4 General . 11 4.1 E-mail services
10、 . 11 4.2 Unified messaging . 11 5 E-mail system model 11 5.1 Reference network topology 11 5.2 Reference scenarios . 12 5.2.1 E-mail send failure . 12 5.2.2 E-mail send success 13 5.2.3 E-mail download detail 14 5.2.4 E-mail send detail . 15 6 E-mail events 16 6.1 Introduction 16 6.2 E-mail send ev
11、ent 16 6.2.1 Introduction 16 6.2.2 E-mail send captured content . 17 6.2.3 E-mail send IRI 17 6.3 E-mail receive event 17 6.3.1 Introduction 17 6.3.2 E-mail receive captured content . 18 6.3.3 E-mail receive IRI 18 6.4 E-mail download event 18 6.4.1 Introduction 18 6.4.2 E-mail download captured con
12、tent . 19 6.4.3 E-mail download IRI 19 7 E-mail attributes . 19 7.0 Availability of information 19 7.1 E-mail protocol ID . 19 7.2 E-mail address . 20 7.3 E-mail recipient list 20 7.4 E-mail sender . 20 7.5 Total recipient count 20 7.6 Message ID 20 7.7 Status . 20 7.8 Server and client port . 20 7.
13、9 Server and client octets sent . 21 7.10 AAAInformation 21 8 Unified Messaging events 21 8.0 Generic description 21 8.1 Delivery of CC . 22 8.2 Messaging events . 23 8.3 Messaging box events 23 ETSI ETSI TS 102 232-2 V3.11.1 (2017-11) 4 8.4 Messaging notification events 25 8.5 Messaging call events
14、 26 8.6 Signalling of party information 26 8.7 Messaging properties . 27 Annex A (normative): SMTP 30 A.1 SMTP introduction . 30 A.2 SMTP HI2 events . 30 A.2.1 E-mail login event 30 A.2.2 E-mail send event 30 A.2.3 E-mail receive event 30 A.3 SMTP HI2 attributes 31 A.4 SMTP HI2 event-record mapping
15、31 Annex B (normative): POP3 . 32 B.1 POP3 introduction 32 B.2 POP3 HI2 events 32 B.2.1 E-mail login event 32 B.2.2 E-mail download event 32 B.2.3 E-mail partial download event . 32 B.3 POP3 HI2 attributes . 33 B.4 POP3 HI2 event-record mapping . 33 B.5 POP3 HI3 delivery of Content of Communication
16、34 B.6 POP3 Interception example 34 Annex C (normative): IMAP4 . 35 C.1 IMAP4 introduction . 35 C.2 IMAP4 HI2 event-record mapping 35 C.3 IMAP4 HI3 delivery of call content . 36 C.4 IMAP4 Interception example . 36 Annex D (normative): Messaging ASN.1 . 38 Annex E (informative): E-mail LI requirement
17、s . 46 E.1 HI2 requirements 46 E.2 HI3 requirements 47 E.3 General requirements . 48 E.4 Requirements mapping . 48 Annex F (informative): SMTP characteristics 49 F.1 SMTP service characteristics . 49 F.2 SMTP protocol characteristics . 49 Annex G (informative): POP3 characteristics . 50 G.1 POP3 ser
18、vice characteristics 50 G.2 POP3 protocol characteristics 50 Annex H (informative): Discussion of webmail interception 51 ETSI ETSI TS 102 232-2 V3.11.1 (2017-11) 5 H.1 Webmail network topology 51 H.2 Webmail protocols . 51 H.3 Webmail interception . 52 Annex I (informative): Discussion for Driving
19、HI2 of HI3 53 I.1 Introduction 53 I.2 Discussion 53 I.2.1 Introduction 53 I.2.2 IP packets . 53 I.2.3 TCP packets . 54 I.2.4 SMTP packets 54 I.2.5 E-mail messages 54 I.3 Conclusion 54 Annex J (informative): Change Request History 55 Annex K (informative): Bibliography . 59 History 60 ETSI ETSI TS 10
20、2 232-2 V3.11.1 (2017-11) 6 Intellectual Property Rights Essential patents 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-members, and can be fo
21、und in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR P
22、olicy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Trademarks The
23、present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of thos
24、e trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Lawful Interception (LI). The present document is part 2 o
25、f a multi-part deliverable. Full details of the entire series can be found in part 1 3. The ASN.1 module is also available as an electronic attachment to the original document from the ETSI site (see details in annex D). Modal verbs terminology In the present document “shall“, “shall not“, “should“,
26、 “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introd
27、uction The present document describes what information is required for the handover of intercepted IP-based messaging traffic from a Communications Service Provider to an LEMF. The present document covers a stage 2 description of the data, but does not specify any functionality within the scope of E
28、TSI TS 102 232-1 3. The Recommendation ITU-T I.130 6 method for characterizing a service will be used as a general framework for the present document. The modified concept of a “stage 1“ will be called the “attributes“ of the interface. The attributes of the interface are the sum total of the entire
29、 constituent attributes that an interface may need to communicate. The modified concept of a “stage 2“ will be called the “events“ of the interface. The events of the interface define the rules of the relationships between the attributes that are required to arrange the disjoint attributes into mean
30、ingful information for a messaging service interaction. The present document is intended to be general enough to be used in a variety of messaging services. It should be recognized that a side effect of this approach is some IRI fields identified may be difficult to extract or non-existent depending
31、 on the messaging service being intercepted. In such cases it may be completely reasonable that the delivered IRI contain empty fields or fields with the value 0. ETSI ETSI TS 102 232-2 V3.11.1 (2017-11) 7 1 Scope The present document contains a stage 1 like description of the interception informati
32、on in relation to the process of sending and receiving asynchronous messages. The present document also contains a stage 2 like description of when Intercept Related Information (IRI) and Content of Communication (CC) need to be sent, and what information it needs to contain. It is recognized that “
33、Instant Messenger“ and “Chat“ applications are another way of exchanging electronic text messages. While the present document may be applicable to such applications it is in no way a goal of the present document to address these methods of electronic text messaging. The definition of handover transp
34、ort and encoding of HI2 and HI3 is outside the scope of the present document. Refer to ETSI TS 102 232-1 3. The present document is designed to be used where appropriate in conjunction with other deliverables that define the service specific IRI data formats. The present document aligns with 3GPP TS
35、 33.108 5, ETSI TS 101 671 4, ETSI TS 101 331 1 and ETSI TR 101 944 i.1. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-
36、specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at https:/docbox.etsi.org/Reference/. NOTE: While any hyperlinks included in this clause we
37、re valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 ETSI TS 101 331: “Lawful Interception (LI); Requirements of Law Enforcement Agencies“. 2 Void. 3 ETSI TS 102 232-1: “La
38、wful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 1: Handover specification for IP delivery“. 4 ETSI TS 101 671: “Lawful Interception (LI); Handover interface for the lawful interception of telecommunications traffic“. NOTE: Periodically ETSI TS 101
39、671 is published as ETSI ES 201 671. A reference to the latest version of the TS as above reflects the latest stable content from ETSI/TC LI. 5 ETSI TS 133 108: “Universal Mobile Telecommunications System (UMTS); LTE; 3G security; Handover interface for Lawful Interception (LI) (3GPP TS 33.108)“. 6
40、Recommendation ITU-T I.130: “Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN“. 7 IETF RFC 5322: “Internet Message Format“. NOTE 1: IETF RFC 5322 obsoletes IETF RFC 2822: “Internet Message Format“. NOTE 2: IETF RFC 2822 obsoletes
41、IETF RFC 0822: “Standard for the format of ARPA Internet text messages“. 8 IETF RFC 1939: “Post Office Protocol - Version 3“. ETSI ETSI TS 102 232-2 V3.11.1 (2017-11) 8 9 IETF RFC 5321: “Simple Mail Transfer Protocol“. NOTE: IETF RFC 5321 obsoletes IETF RFC 2821: “Simple Mail Transfer Protocol“. 10
42、IETF RFC 3501: “Internet Message Access Protocol - Version 4rev1“. 11 Recommendation ITU-T X.680/ISO/IEC 8824-1: “Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation“. 12 ISO 3166-1: “Codes for the representation of names of countries and their subdivisions
43、 - Part 1: Country codes“. 13 IETF RFC 4954: “SMTP Service Extension for Authentication“. NOTE: IETF RFC 4954 obsoletes IETF RFC 2554: “SMTP Service Extension for Authentication“. 14 Void. 15 IETF RFC 3493: “Basic Socket Interface Extensions for IPv6“. 16 IETF RFC 4422: “Simple Authentication and Se
44、curity Layer (SASL)“. NOTE: IETF RFC 4422 obsoletes IETF RFC 2222: “Simple Authentication and Security Layer (SASL)“. 17 IETF RFC 3207: “SMTP Service Extension for Secure SMTP over Transport Layer Security“. 18 IETF RFC 2595: “Using TLS with IMAP, POP3 and ACAP“. 19 IETF RFC 4616: “The PLAIN Simple
45、Authentication and Security Layer (SASL) Mechanism“. 20 IETF RFC 2045: “Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies“. 21 IETF RFC 2046: “Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types“. 22 Void. 23 ETSI EN 300 356 (all parts): “Integra
46、ted Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface“. 24 IETF RFC 4646: “Tags for Identifying Languages“. 25 Recommendation ITU-T E.164: “The international public telecommunication numbering plan“. 26 IETF RFC 3696: “Appl
47、ication Techniques for Checking and Transformation of Names“. 27 Recommendation ITU-T E.212: “The international identification plan for public networks and subscriptions“. 28 Void. 29 IETF RFC 2806: “URLs for Telephone Calls“. 30 ETSI TS 124 229: “Digital cellular telecommunications system (Phase 2+
48、); Universal Mobile Telecommunications System (UMTS); LTE; IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 (3GPP TS 24.229)“. 31 IETF RFC 791: “Internet Protocol“. 32 IETF RFC 3261: “SIP: Session Initiation Protocol“. 33
49、IETF RFC 7542: “The Network Access Identifier“. 34 IETF RFC 8200: “Internet Protocol, Version 6 (IPv6) Specification“. 35 IETF RFC 6335: “Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry“. ETSI ETSI TS 102 232-2 V3.11.1 (2017-11) 9 36 ETSI TS 129 002: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Mobile Application Part (MAP) specification
