Messaging

SMS Firewall

Protect your messaging network from grey routes, SIM-box fraud, content abuse, and A2P bypass attacks. Our carrier-grade SMS firewall inspects every message in real time, blocks fraudulent traffic, and restores lost A2P revenue while keeping legitimate messages flowing at full throughput.

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The Problem

Grey Routes Cost Carriers Millions

A2P SMS bypass fraud costs the telecom industry over $10 billion annually. Grey-route aggregators inject A2P traffic via P2P channels to avoid interconnect fees, SIM-box farms spoof legitimate senders to deliver spam at scale, and content abusers exploit open gateways for phishing and fraud. The MOBITELSMS SMS Firewall closes every one of these attack vectors.

Features

Multi-Layer Fraud Protection

SIM-Box Detection

Machine-learning traffic analysis identifies SIM-box farms by detecting statistically anomalous sending patterns — identical inter-message intervals, sequential MSISDN progression, and uncharacteristic OA/DA combinations.

Grey Route Blocking

Test-call probing and pattern fingerprinting detects traffic arriving via grey routes. Automatic blocking with configurable allowlists for legitimate roaming and P2P traffic ensures zero impact on genuine subscriber messages.

Content Filtering

Regex and keyword-based content inspection blocks phishing URLs, premium-rate number promotions, and prohibited content categories. Custom rule sets per sender category, route, or destination country.

Rate Limit Enforcement

Per-sender, per-destination, and global TPS caps enforced at the firewall layer. Burst detection and auto-block for senders exceeding policy thresholds, with configurable cool-down and appeal workflows.

Blacklist & Whitelist Management

Centralised sender, content, and route allow/block lists manageable via dashboard or API. Shared threat intelligence feeds automatically populate block lists with known fraudulent sender IDs and content patterns.

Revenue Assurance Reports

Quantify recovered A2P revenue with before-and-after blocking analytics. Detailed reports show blocked message volume, estimated revenue impact, fraud category breakdown, and trend analysis by month.

Technical Specifications

Specifications

Inspection Rate15,000+ msg/s real-time

Latency Added<1ms per message

Detection MethodsML, regex, rate, probe, fingerprint

Rule EnginePCRE regex, wildcard, exact match

IntegrationInline SMPP tap, SS7 MAP probe

ReportingReal-time + hourly + monthly

Management APIREST JSON

HA ModeActive-active clustering

SMS Firewall

Grey Routes Cost Carriers Millions

Multi-Layer Fraud Protection

Specifications

Secure Your SMS Network

MOBITELSMS Assistant