GTP Firewall

A comprehensive protection against GTP threats

What is GTP and its role in 5G setup?

GTP (GPRS Tunnelling Protocol) defined by the 3GPP standards, has been a fundamental protocol in the evolution of mobile networks. Over the years, GTP has evolved from connecting and enabling seamless roaming access in GPRS to acting as a liaison between old and new technologies across 3G and 4G.

The GTP protocol, designed for legacy networks, continues to be used in 4G and 5G networks and is also known for inherent vulnerabilities. GTP lacks robust, built-in security mechanisms. These inherent vulnerabilities make it a potential hotbed for security exploits through the IPX/GRX border, like - Denial of Service, Data interception, Fraud, Subscriber impersonation and Data disclosure. Despite some upgrades and changes, these vulnerabilities are carried forward, posing a significant threat to the security and reliability of 5G networks.

Why MNOs need to consider GTP-C Security ?

  • Lack of in-built security mechanism: Unlike SS7 and Diameter networks, the GTP network lacks border devices (like STP/DRA) that may have built-in security features against attacks on GTP.
  • IP Firewalls limitations:Another critical point is the IP Firewalls, sometimes referenced as GTP-U Firewalls do not explore the control plane flow, they merely act as an IP whitelist/blacklist for GTP-C traffic flow.
  • The first line of defence:As most GTP attacks emanate and originate from the control plane layer, the GTP-C firewall acts as the first line of defence. It creates a barrier and prevents incoming threats before traffic data moves through the fake connections.

SecurityGen GTP-C Firewall

TSG GTP Firewall is a high-end security solution built to shield mobile networks from potential risks associated with GTP. This Firewall, a vital part of our Telecom Security Guard (TSG) platform, provides robust security for 3G, 4G, and 5G networks, maintaining secure and seamless telecom services. Compliance being key in security, our Firewall aligns with the GSMA FS.20 guidelines, safeguarding your network from GSMA Category 1, 2, and 3 threats. Our solution’s unique feature which helps query actual subscriber location information provides protection Category 3 attacks.

Our Firewall can be used as standalone solution, and even higher efficiency is achieved by synergizing with other TSG platform modules to cross-check threats across protocols like SS7, Diameter, and HTTP/2.

How SecurityGen GTP Firewall provides comprehensive protection against GTP threats?


  • Enhanced Protection: SG GTP Firewall significantly reduces the risk of cyberattacks, ensuring network integrity and customer data protection.
  • Comprehensive Security: Designed to defend against a wide range of threats across all generations of mobile networks, including cross-protocol verification of SS7, Diameter, and HTTP/2.
  • Operational Efficiency: By managing traffic security policy and preventing network exploitation, this firewall ensures efficient network operations.
  • Streamlined User Experience: If you're familiar with SecurityGen’s signaling firewalls, you'll appreciate the user-friendly interface, designed for simplicity and efficiency.
  • Simple Integration: With its diverse types of integration, our Firewall seamlessly fits into your network architecture with minimal configuration changes, ensuring an easy and straightforward deployment process. It's high-grade security without the hassle.
  • Future-Proofed: With broad GTP version compatibility, this firewall is a long-term solution compatible with current and future network technologies.
  • Compliance: Helps telecom operators adhere to stringent telecom security regulations and standards.

Deployment Options

Virtual network function

The GTP Firewall can be deployed as a virtual network function of a bare metal appliance

Standalone network function

It can act as a standalone network function or part of the full TSG platform

Flexible deployments

Both on premises and cloud deployment options are supported

To Know More: Download Datasheet

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