ForewordIntroduction1 Scope2 References3 Definitions, symbols and abbreviations4 Overview over network domain security for IP based protocols5 Key management and distribution architecture for NDS/IP6 Other 3GPP profiles7 VoidA.1 Network Address Translators (NATs) and Transition Gateways (TrGWs)A.2 Filtering routers and firewallsA.3 The relationship between BGs and SEGsB.0 GeneralB.1 The need for security protectionB.2 Policy discrimination of GTP-C and GTP-UB.3 Protection of GTP-C transport protocols and interfacesC.0 GeneralC.1 The need for security protectionC.2 Protection of IMS protocols and interfacesD.0 GeneralD.1 The need for security protectionD.2 Protection of UTRAN/GERAN IP transport protocols and interfaces 7 Void 33.2103GPPIP network layer securityNetwork Domain Security (NDS)Release 17TS Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM Annex A (informative):Other issues