IPS (Intrusion Prevention System)

An Intrusion Prevention System inspects traffic in line and actively blocks detected attacks, going beyond an IDS that only alerts. Modern IPS engines combine signature, protocol-anomaly, and behavioural detection, and are often integrated into next-generation firewalls. In telecom they are deployed at IT/OAM boundaries; SS7/Diameter signalling firewalls play the equivalent role for telecom protocols.

Categories: SignalingSecurity ControlsThreats and Attacks

IPS 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.

Security controls span signaling firewalls (SS7/Diameter/GTP screening), transport encryption (IPsec, TLS, PRINS), identity and access on OSS/BSS, and monitoring at both packet and log level. Controls are audited against GSMA FS.11/FS.19/FS.20/FS.36.

To place IPS in the wider telecom-security picture, review Global Title Abuse, Indicators of Compromise (Telecom IoCs), PCAP, STIR/SHAKEN, 1G and 5G SBA — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.