Signaling Penetration Testing

Signalling penetration testing exercises an operator's interconnect defences by sending crafted SS7, Diameter, GTP, or N32 messages from controlled test points to evaluate whether attacks such as location tracking, IMSI disclosure, call/SMS interception, and DoS are blocked. It validates the configuration of signalling firewalls, the effectiveness of GSMA category filtering, and the visibility of monitoring tools, and is a recommended practice in GSMA FS.11/FS.19 and many regulatory frameworks.

Categories: Core NetworkSignalingRoaming and Interconnect

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

Related terms

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