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NGAP/NAS Client Test Suite Data Sheet
Test Suite:
NGAP/NAS Client Test Suite

The NG Application Protocol (NGAP) provides the control plane signalling between NG-RAN node and the Access and Mobility Management Function (AMF). The services provided by the NGAP are divided to UE associated and non UE associated. The UE associated services are related to one UE and the non UE associated services are related to the NG interface. The NGAP is transfered over SCTP. The NGAP protocol is defined in TS 38.413. The NGAP protocol provides transport function between UE and AMF by offering NAS signalling transport. The NAS protocol provides mobility management and session management between the User equipment (UE) and Access and Mobility Management Function (AMF). The NAS protocol is defined in TS 24.501. The NGAP/NAS Client Test Suite has been designed to act as a malicious AMF that sends exceptional requests to the tested entity. The supported test target is NG-RAN node or UE.

Used specifications

3GPP TS 38.413
5G; NG-RAN; NG Application Protocol (NGAP)
Supported specification version: 16.7.0.
3GPP TS 24.501
5G; Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3
Supported specification version: 16.10.0.
3GPP TS 24.007
5G; Mobile radio interface signalling layer 3; General Aspects
Supported specification version: 16.5.0. Only parts which are used in NAS protocol.
3GPP TS 24.008
5G; Mobile radio interface Layer 3 specification; Core network protocols; Stage 3
Supported specification version: 16.7.0. Only parts which are used in NAS protocol.

Tool-specific information

Tested NGAP messages

AMF Configuration Update

Downlink NAS Transport

Downlink Non UE Associated NRPPa Transport

Downlink RAN Status Transfer

Downlink UE Associated NRPPa Transport

Handover Request

Initial Context Setup Request

NG Reset

NG Setup Response


PDU Session Resource Modify Request

PDU Session Resource Release Command

PDU Session Resource Setup Request

RAN Configuration Update Acknowledge

Reroute NAS Request

UE Context Release Command

Tested NAS messages

5GMM Status

5GSM Status

Authentication Request

Authentication Reject

Configuration Update Command

DL NAS Transport

De-registration Request (UE terminated)

Identify Request

PDU Session Establishment Accept

PDU Session Establishment Reject

PDU Session Modification Command

PDU Session Release Command

Registration Accept

Registration Reject

Service Accept

Security Mode Command

Service Reject

Supported NAS integrity algorithms





Supported NAS confidentiality algorithms





Operating system limitations

SCTP transport requires the test suite to be run in Linux environment.

Test tool general features
  • Fully automated black-box negative testing
  • Ready-made test cases
  • Written in Java(tm)
  • GUI command line remote interface modes
  • Instrumentation (health-check) capability
  • Support and maintenance
  • Comprehensive user documentation
  • Results reporting and analysis