DDoS-Guard by DDoS-Guard is a DDoS protection system that operates across multiple OSI layers (L3-L7) using reverse proxy technology and DNS A-records modification. The system implements network-level and application-level DDoS mitigation through traffic scrubbing in a distributed network of nodes, utilizing automated algorithms for traffic analysis and filtering. It provides protection against volumetric attacks, protocol exploitation, and application layer threats with a scrubbing capacity of up to 3.2 Tbps or 700 Mpps, leveraging both symmetric and asymmetric protection schemes.