Roaming N32 interconnect between 5G SA (Standalone) core networks is one of the crucial external interfaces connecting carriers on which security by design was one of the key aspects by 3GPP standardization. Despite the confidentiality, integrity and authenticity protection of 5G interconnects, there is still need for application-level filtering by 5G signalling firewall on the network edge. This talk will cover some of the 5G security risks with focus on signalling interconnect messages which could cause harm in similar way like their predecessor protocols (SS7/Diameter/GTP-C) affecting user privacy and exposing networks.
