Radio Access Network Security Assessment

RAN Evolution

Radio Access Network Security Assessment

Long Term Evolution (LTE) & New Radio Evolution (NR) is a fundamental component in a mobile network operator’s (MNO) ability to deliver upon the promise of 5G growth.

Evolving LTE and 5G RAN technologies architecture are also expanding the operator’s customer segment from consumers to enterprises and industries enabling new markets and growth engines.

But at the same time, it introduces complexity and increases the potential attack and risk presented by the 5G radio access infrastructure.

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The Growing Need For RAN Security

The ongoing evolution of 4G and the introduction of 5G is gradually enabling the implementation of business and vertical use cases that provide value beyond plain wireless connectivity.

To enable the growing scalability delivered by LTE-A and especially 5G, the deployment of a growing network of small cells is required.

The need for better RAN performance, agility, scalability, flexibility and cost-effectiveness, have led to its gradual evolution in LTE and 5G.

Unlike the previous mobile generations, mobile infrastructure standardization and the growing reliance on its services for some critical use cases will increase the cybercrime community’s interest in the mobile infrastructure as an attack vendor will further drive the growing need of RAN security.

Lurking Threats in the RAN Network

a) Introduction of rogue ENBs and GNBs as a launch point for attacks against core infrastructure.

b) Man in the middle (MIM) attack for intercepting control and user plane traffic.

c) Injection of malicious traffic (malware) to attack and manipulate core elements.

d) Misconfiguration or failed software updates within the RAN.

e) Denial of service (DoS/DDoS).

Conclusion

Securing a versatile, hybrid and highly scalable 4G and 5G radio access network is more important than ever due to the evolving nature of technology and new possible use cases.

Securing the RAN mandates a new kind of Sec GW infrastructure, one is the agile and hybrid, yet capable of supporting the mixed architectures and different performance, scalability and QoS requirements LTE-A and 5G present.

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