Core Network
Categories: Radio Access NetworkCore NetworkInternet and Routing
Core Network in context
The radio access network is the layer where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations, downgrade attacks and jamming, and defenses hinge on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.
The mobile core is where subscriber sessions, mobility and policy live. In 4G it is the EPC (MME, HSS, S/PGW); in 5G it is the Service-Based Architecture with AMF, SMF, UPF, AUSF, UDM and the NRF. Core exposure is the difference between a single-subscriber leak and a fleet-wide breach.
To place Core Network in the wider telecom-security picture, review CAPEX, 5G SA, MNO, MVNO, NRF and O-Cloud.
Related terms
Related topic hubs
- 5G Security 5G SBA, SEPP, SUCI, 5G-AKA, N32 and service-based interface security.
- 5G NEF Security Network Exposure Function security in the 5G core.
- 5G Penetration Testing Pentesting the 5G core, SBA, SEPP, and gNB interfaces.
- 5G Security Training Training on 5G core, SBA, N32, SUCI and radio security.
More from the TelcoSec Glossary
Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.