RCS Guard with RCS Firewall is a network security solution designed for Communication Service Providers (CSPs) to gain visibility and control over Rich Communication Services (RCS) and Rich Business Messaging (RBM) traffic. The platform addresses revenue leakage threats that CSPs face as traditional A2P SMS traffic migrates to RCS messaging channels. The solution provides real-time detection and analysis of RCS message flows using deep packet inspection (DPI) technology. It enables CSPs to monitor both national and international RCS/RBM traffic that may bypass traditional billing systems. The platform includes capabilities to block unauthorized RCS messages and prevent fraud within the RCS ecosystem. RCS Guard operates as a modular platform that integrates cybersecurity technologies with next-generation DPI systems. It offers centralized interactive dashboards for data visualization and consolidated reporting. The solution provides immediate operational results and includes 24/7 support from dedicated engineers. The platform is offered as a fully-managed service and targets CSPs seeking to protect their A2P revenue streams while gaining comprehensive visibility into RCS traffic patterns across their networks. It addresses challenges related to traffic visibility, charging mechanisms, and fraud control within the RCS ecosystem.