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TechSpec
  • Foreword
  • Introduction
  • 1 Scope
  • 2 References
  • 3 Definitions, symbols and abbreviations
  • 4 Overview over network domain security for IP based protocols
  • 5 Key management and distribution architecture for NDS/IP
  • 6 Other 3GPP profiles
  • 7 Void
  • A.1 Network Address Translators (NATs) and Transition Gateways (TrGWs)
  • A.2 Filtering routers and firewalls
  • A.3 The relationship between BGs and SEGs
  • B.0 General
  • B.1 The need for security protection
  • B.2 Policy discrimination of GTP-C and GTP-U
  • B.3 Protection of GTP-C transport protocols and interfaces
  • C.0 General
  • C.1 The need for security protection
  • C.2 Protection of IMS protocols and interfaces
  • D.0 General
  • D.1 The need for security protection
  • D.2 Protection of UTRAN/GERAN IP transport protocols and interfaces

A.3 The relationship between BGs and SEGs

33.2103GPPIP network layer securityNetwork Domain Security (NDS)Release 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

It is observed that GPRS Border Gateways (BG) and NDS/IP Security Gateways (SEGs) will both reside at the border of an operator network.

Annex B (normative):
Security protection for GTP