SMS Firewall is a full-featured, high-performance solution designed to protect mobile networks and subscribers from fraudulent SMS traffic originating from SMPP applications as well as external networks via SS7 interfaces.

The solution prevents unauthorized SMS traffic and detects fraud types defined in GSMA IR.71 and AA.50, including SMS spoofing, SMS faking, and SMS flooding.

SMS Firewall allows operators to define flexible filtering policies based on:

• MSISDN ranges
• SMPP connections
• GT or SCOA sender ranges
• Message origin and routing direction

These policies enable bandwidth limitations, routing rules, rate limits per content provider, MSISDN, or GT, recipient restrictions, service number controls, and other mechanisms to effectively counter modern SMS security threats.

Additionally, SMS Firewall performs SMS windowing functions and content-based spam blocking to prevent unauthorized promotional or criminal message distribution.