TR 187 008 : 1.1.1
Current
The latest, up-to-date edition.
TELECOMMUNICATIONS AND INTERNET CONVERGED SERVICES AND PROTOCOLS FOR ADVANCED NETWORKING (TISPAN); NAT TRAVERSAL FEASIBILITY STUDY REPORT
Hardcopy , PDF
English
Intellectual Property Rights
Foreword
1 Scope
2 References
2.1 Normative references
2.2 Informative references
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 NAT and firewall traversal considerations
4.1 Rationale for NAT Traversal study in the NGN
4.2 NAT Background
4.3 Types of NAT/Firewall Devices
5 Reference architecture for NGN R2
6 Requirements and objectives for NGN R2 NAT-T
6.1 Objectives for NAT-T in NGN-R2
6.2 Requirements for use of NAT-T in NGN-R2
7 Existing NAT traversal methods documented in TISPAN R1
and 3GPP specifications
7.1 IMS-ALG in TISPAN R1
7.2 ICE and outbound in TS 123 228
8 Feasibility, applicability, limitations of existing NAT
traversal methods documented in TISPAN R1 and 3GPP
specifications
8.1 Open issues with the NGN R1 approach for NAT traversal
8.2 IPSec in presence of NAT
8.3 IMS ALG
8.4 ICE for media
8.5 Outbound for signalling
8.6 UE ALG
9 Solutions for NAT traversal in NGN R2
9.1 NAT traversal for signalling
9.2 NAT traversal for media
Annex A: TVRA Summary for the NAT-T methods recommended in the
present document
History
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