SS7 Interconnect Security

Security controls specific to SS7 protocol communications between interconnecting networks. Includes SS7 firewall deployment, Global Title filtering, message authentication, topology hiding, and protection against SS7-specific attacks (location tracking, call interception, SMS spoofing). Critical for legacy 2G/3G networks and interconnect scenarios.

Categories: SignalingRoaming and InterconnectSecurity Controls

SS7 Interconnect Security in context

Signaling protocols carry the control-plane messages that set up calls, register subscribers and route SMS. SS7, Diameter, GTP-C and SIP are the four dominant families, and interconnect exposure of any of them is treated by GSMA as top-tier telecom risk.

Roaming and interconnect are where two operators exchange signaling and user-plane traffic. Trust boundaries here are the primary attack surface for location tracking, SMS interception and fraud, which is why GSMA now mandates SEPP with PRINS on 5G interconnect.

To place SS7 Interconnect Security in the wider telecom-security picture, review Detection Engineering, Diameter Interconnect Security, Ingress, Integrity, Mitigation and Monitoring — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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