Defending 5G Networks Against DDoS Attacks Using Quarantine Slice Manager Architecture

The emergence of 5G technology has opened up new possibilities in the realm of digital applications. However, these technological leaps forward also bring about heightened security risks. This paper investigate the impact of Distributed Denial of Service (DDoS) attacks on 5G network slicing. We introduce a distinctive threat model, tailored specifically for 5G networks. In an effort to combat these vulnerabilities, we present a Quarantine Slice Manager architecture, a two-level hierarchical and distributed network design, capable of effective slice management and prompt response to potential threats. We use an experimental setup consisting of a simulated Radio Access Network (RAN) and an emulated 5G core network to examine the impact of attack to three different network slices-eMBB, uRLLC, and mMTC-under a DDoS attack. Through a series of simulated attack scenarios, we conduct an extensive performance analysis of our system, thereby highlighting the critical importance of securing control plane functions, such as the AMF, for overall network robustness.