FS.36 (5G Interconnect Security Guidelines)

In telecom networks, GSMA FS.36 provides operator guidelines for securing the 5G interconnect, covering SEPP deployment, PRINS configuration, IPX provider modifications, certificate management, and incident handling between roaming partners. It complements signaling security documents such as FS.07 (SS7), FS.11, and FS.19 (Diameter).

Categories: SignalingRoaming and InterconnectSecurity Controls

FS.36 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 FS.36 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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