5G Security Testing & Hacking
Comprehensive guide to 5G network security assessment, architecture analysis, and penetration testing methodologies.
The 5G security architecture introduces significant improvements over previous generations, with enhanced authentication, encryption, and integrity protection mechanisms.
5G Security Architecture Diagram
The 5G security architecture consists of the 5G Core Network connected to Access Network Security, Mobility Management, and Session Management. The Access Network Security includes AUSF and SEAF components, while Mobility Management includes AMF and Session Management includes SMF. The AUSF connects to UDM/ARPF.
Key Security Components:
- AUSF (Authentication Server Function): Handles authentication procedures
- SEAF (Security Anchor Function): Anchors security in the serving network
- UDM (Unified Data Management): Stores subscriber data and authentication credentials
- ARPF (Authentication Credential Repository and Processing Function): Generates authentication vectors
The 5G RAN architecture introduces a disaggregated approach with functional splits between different components.
5G RAN Architecture Diagram
The 5G RAN architecture shows User Equipment (UE) connecting to gNB, which connects to both CU-CP (Control Plane) and CU-UP (User Plane) components. Both CU components connect to the Core Network.
Key RAN Components:
- gNB: 5G base station
- CU-CP: Centralized Unit - Control Plane
- CU-UP: Centralized Unit - User Plane
- DU: Distributed Unit
- RU: Radio Unit