Details of 'DTR/LI-00204' Work Item

	Work Item Reference	ETSI Doc. Number	STF	Technical Body in Charge		Download Standard
	DTR/LI-00204	TR 103 829		LI
	Current Status (Click to View Full Schedule)	Latest Version	Cover Date	Standstill		Creation Date
	Publication (2022-08-05)	1.1.1	2022-08-05	View Standstill Information		2021-06-22
	Rapporteur	Technical Officer		Harmonised Standard
	Matthew Meacham	Carmine Rizzo		No
Title	Lawful Interception (LI); IP address retention and traceability
Scope and Field of Application	The present document serves as a guide for policy makers, communication service providers and law enforcement agencies, regarding the retention of IP addresses for law enforcement purposes. The study considers and documents: 1. Basic Internet protocol principles, highlighting specifically how IP addresses and ports are used to access the internet. 2. Key differences between IPv4, IPv6, Dual Stack and other relevant layer 3 protocols. 3. How IP addresses are allocated within networks, including EPC and 5GC, documenting any differences in approach. 4. The role of Network and Port address translation within a CSP network. 5. The impact address translation technologies on IP address attribution as observed from outside the CSPs network. This includes a discussion on the different translation technologies commonly used by CSPs (e.g. NAT, PAT, CGNAT, NAT64). 6. Description of the key elements which define user and IP address association and therefore make up the minimal set of stored attributes for a viable IP retention solution. 7. Methods for accessing records of IP and Port allocation from within a CSP network. 8. Methods for retaining and querying stored IP association records, consideration is given to the storage volumes, durations and accuracy requirements.
Supporting Organizations	BMWi, BAE S, TELEFONICA., DT, Ofcom (CH), Cadzow Comms, PIDS, OTD, BfV, PSC, UTIMACO, AREA, Group 2000, Attorney-General's Dept, Bayerisches LKA, Softel Systems, EVE, BKA, Ministere Economie et Finances, Polisen, LKA Niedersachsen, ZITiS, DiaLOGIKa, umlaut

	Keywords	Projects	Clusters	Frequencies	Mandates	Directives
	CGNAT IP Address Resolution IP Retention NAT PAT Traceability		Interoperability Security
Official Journal
Remarks	2022-06-21 meacham Draft contributed - V 1.1.1 contributed for Decision in LI(22)P60028 as Final draft for approval 2022-06-21 meacham Final draft for approval proposal in contribution LI(22)000005 was Withdrawn by LI 2022-06-17 meacham Draft contributed - V 1.1.1 contributed for Decision in LI(22)000005 as Final draft for approval 2022-06-17 meacham A new draft is uploaded - V 1.1.1 with status: Final draft for approval 2022-02-16 meacham Draft contributed - V 0.0.6 contributed for Decision in LI(22)P59015r2 as Stable draft 2022-02-16 meacham A new draft is uploaded - V 0.0.6 with status: Stable draft - with comment: Change to use Drama Ranges and Update to 4.5 to add clarity to location accuracy statement 2022-02-16 meacham Stable draft proposal in contribution LI(22)P59015r1 was Revised by LI 2022-02-02 meacham Draft contributed - V 0.0.5 contributed for Decision in LI(22)P59015r1 as Stable draft 2022-02-02 meacham Stable draft proposal in contribution LI(22)P59015 was Revised by LI 2022-02-02 meacham A new draft is uploaded - V 0.0.5 with status: Stable draft - with comment: incorporating the edits from Rainer Landgraf 2022-02-01 meacham Draft contributed - V 0.0.4 contributed for Decision in LI(22)P59015 as Stable draft 2022-02-01 meacham Stable draft proposal in contribution LI(22)000001 was Withdrawn by LI 2022-01-31 meacham Draft contributed - V 0.0.4 contributed for Decision in LI(22)000001 as Stable draft 2022-01-31 meacham A new draft is uploaded - V 0.0.4 with status: Stable draft 2021-10-20 meacham Draft contributed - V 0.0.3 contributed for Discussion in LI(21)P58036r1 as Early draft 2021-10-20 meacham A new draft is uploaded - V 0.0.3 with status: Early draft 2021-10-20 meacham Early draft proposal in contribution LI(21)P58036 was Revised by LI 2021-10-08 meacham Draft contributed - V 0.0.2 contributed for Discussion in LI(21)P58036 as Early draft 2021-10-08 meacham A new draft is uploaded - V 0.0.2 with status: Early draft - with comment: amendments made based on comments from the Rap 2021-09-27 meacham Draft contributed - V 0.0.1 contributed for Discussion in LI(21)R56002 as Early draft 2021-09-27 meacham A new draft is uploaded - V 0.0.1 with status: Early draft 2021-06-22 RIZZOC TB adoption of WI LI, see contribution LI(21)P57041 2021-06-22 RIZZOC WI proposed to TB LI, see contribution LI(21)P57041

Specific aspects
	Security/Privacy aspects