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ETSI and Lawful Interception Robin Gape Chair TC Sec WG LI 1 About ETSI • European Telecommunications Standards Institute • A “standards factory” – market driven • Broad industry participation • European and Global player 2 PSTN Achievements • Technical Handover Interface – ES 201 671 v1 1999 – ES 201 671 v2 2001 • Plus supporting documents – LEA Requirements (ETR 331) – Network Elements (ES 201 158) 3 A Major Success • Started with 17th January 1995 Resolution • “Filled out” LEA requirements 1996 • Network elements 1998 • Handover Interface 1999 • Revised Handover Interface 2001 4 Structure of Handover • • • • Administration Intercept related information Content of communication Specifies the boundary only 5 access provider’s, network operator’s or service provider’s domain LEA (LEMF) AP/NWO/SvP admin. centre service information IIF HI1 AP = Access provider HI = Handover interface IIF = internal intercepting function INI = internal network interface LEMF = Law enforcement monitoring facility MF = Mediation function NWO = Network operator SvP = Service provider mediation function (may be transparent) content of communication HI2 IIF HI3 INI HI HI1: administration HI2: intercept related information 6 HI3: content of communication Adoption of ES 201 671 • Manufacturers • European Countries • World-wide 7 Mobile • GSM Requirements – TS 101 507 • GSM Internals – TS 101 509 (03.33) • Also TETRA – EN 301 040 8 Data Achievements • GPRS Handover Interface – TR 101 876 – ES 201 671 v2 2001 • GPRS Internals – Annex B of TS 101 509 • Report “Issues on IP Interception” – TR 101 944 9 IP Report • • • • Describes data Structures problems Common understanding Way point to solutions 10 Data Handover Application 5 Transport 4 Network 3 Data link 2 Physical 1 Terminal Service Access Network connectivity transactions (IP) datagrams (IP) datagrams Data link PDUs Physical PDUs 5 3 3 2 1 11 Why standardise? • • • • • • Market availability Low cost Speed to market Low hassle Efficiency Simplicity 12 Players in ETSI • Operators • Manufacturers – network – LEMF • Regulators & Ministries • Law Enforcement Agencies 13 What is ETSI doing for data? • UMTS • TIPHON – multimedia – includes voice • Other systems • Market driven 14 Where is the market going? • Full steam ahead • Where the demand is – more and more data • Detail not clear • Growth will continue 15 The Future • Support ETSI • Adopt ETSI standards – simple – cheap, for everyone • Ferocious pace of change – very hard to stop 16 More info • Web site – www.etsi.org • Publications – http://webapp.etsi.org/pda/ • WG LI – http://www.etsi.org/SEC/sec_li.htm 17