FS.07 (GSMA Reference Document)

GSMA FS.07 is the Permanent Reference Document defining baseline security recommendations for 2G/3G/4G international roaming. It covers SS7 and Diameter interconnect controls, the responsibilities of home and visited operators, and minimum filtering and monitoring requirements. FS.07 is one of the foundational GSMA security documents that operators reference when defining their roaming security baseline alongside FS.11 and FS.19.

Categories: Core NetworkSignalingRoaming and Interconnect

FS.07 in context

The mobile core carries subscriber sessions, mobility and policy. 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.

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.

To place FS.07 in the wider telecom-security picture, review FS.19, GGSN, GTP, GTP Firewall, HLR and HSS — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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