5G Core Security

5G Core Security Training by Tonex

The Fifth Generation (5G) core delivers connectivity through interconnected functions that exchange service requests, registration information, subscriber context, and user traffic controls. 5G Core Security Training by Tonex focuses on securing this environment through identity assurance, protected service communications, authorized function discovery, network exposure controls, and trusted operational administration. Participants examine service-based architecture, registration and authentication dependencies, control and user plane separation, cloud deployment security, and interoperator trust. The course explains security responsibilities and practical review procedures without treating any single core control as sufficient protection.

Defending the mobile core strengthens cybersecurity by protecting critical network services and sensitive subscriber context. Layered controls also enhance cybersecurity resilience through detection, containment, and reliable operational recovery.

A practical training approach includes exercises, real-world case studies, and examples of processes and documentation used in 5g core security projects.

Learning Objectives

• Describe the 5G core architecture and essential security relationships among functions.
• Evaluate subscriber authentication and network function authorization dependencies.
• Assess protected service communications, exposure controls, and trust boundaries.
• Review user plane segmentation and network slice security considerations.
• Identify operational threats from management access, configuration, and cloud hosting.
• Develop core security review criteria and incident evidence requirements.
• Improve cybersecurity through layered safeguards and core service monitoring.

Audience

• Cybersecurity Professionals
• 5G Core Security Engineers
• Mobile Network Operators
• Telecommunications Architects
• Network Function Administrators
• Cloud Infrastructure Security Teams
• Security Operations Analysts
• Network Engineering Leads

Course Modules

Module 1: 5G Core Function Security Foundations

• Identify core network functions and their security critical responsibilities
• Distinguish service signaling interactions from subscriber user traffic handling
• Map identities and trust boundaries between communicating core services
• Examine dependencies created by service discovery and function registration
• Identify management interfaces affecting critical core service configurations
• Document shared infrastructure and supplier responsibility boundaries

Module 2: Subscriber Authentication and Key Security

• Explain subscriber authentication objectives and protected identity handling
• Review authentication server dependencies and network access authorization
• Assess security context establishment during legitimate subscriber registration
• Identify key lifecycle and sensitive credential protection responsibilities
• Consider failures involving compromised credentials or authorization policy
• Define monitoring requirements for unusual authentication behavior

Module 3: Service Based Interface Protection

• Review service authentication and authorization between network functions
• Assess certificate trust and secure transport requirements for service calls
• Identify risks from excessive service discovery and exposed interfaces
• Examine application interface validation and request handling controls
• Consider delegated authorization and changing network function service identities
• Document protected interface and service access review criteria

Module 4: User Plane and Slice Isolation

• Distinguish Session Management Function responsibilities from User Plane Function processing
• Review network slice traffic separation objectives and configuration dependencies
• Assess policy enforcement at user traffic forwarding boundaries
• Examine exposure from shared hosting and common transport resources
• Identify observability limitations across control and user service components
• Define isolation verification checks for security design assessments

Module 5: Interconnection and Infrastructure Security

• Explain Security Edge Protection Proxy roles in interoperator signaling
• Assess roaming trust arrangements and network boundary exposure
• Review infrastructure access controls protecting hosted core functions
• Identify secure configuration and update verification responsibilities
• Assess privileged administration of orchestration and core service environments
• Document third-party trust and support access security requirements

Module 6: Core Monitoring and Incident Preparedness

• Identify security relevant core registration and service access records
• Define detection considerations for anomalous service and authentication activity
• Correlate control plane changes with observed service availability problems
• Document incident ownership across core operators and infrastructure teams
• Plan evidence retention and authorized escalation for suspected compromise
• Review corrective actions and core service security improvement priorities

Protect the functions responsible for modern mobile connectivity. Enroll in 5G Core Security Training by Tonex to improve core protection and operational assurance.