Fuzzing (Telecom Protocols)

Fuzzing 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 Fuzzing in the wider telecom-security picture, review Patch Management, Telecom Reconnaissance, Firewall, NSA, SC and Service-Based Architecture (SBA) Security.

Related terms

• Patch Management
• Telecom Reconnaissance
• Firewall
• NSA
• SC
• Service-Based Architecture (SBA) Security
• RANAP
• AMF

Related topic hubs

• Signaling Firewall Unified SS7/Diameter/GTP/SMS signaling firewall framework.
• SS7 Firewall GSMA FS.11 category 1/2/3 SS7 message screening at the STP edge.
• Diameter Security 4G/LTE Diameter threats across IPX/roaming and DEA defenses.
• Diameter Firewall GSMA FS.19 screening at the Diameter Edge Agent on S6a/S9/S13.

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.