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R-DDoS (Reverse Distributed Denial of Service) Definition: A networking phenomenon occurring in shared-tenancy environments (such as bot hosting platforms or NAT-based networks) where a single internal client generates a high volume of outbound traffic toward an external API or service, triggering a global IP-based rate limit or reputation block. Impact: Because the external service (e.g., Discord, GitHub, or Cloudflare) perceives all traffic from the shared outbound IP address as a single source, the defensive block is applied to the entire IP. This results in a "denial of service" for all other legitimate users on that same node, despite their individual processes remaining compliant with API guidelines. Key Characteristics: Directionality: Unlike a standard DDoS which is Inbound (external sources attacking a target), an R-DDoS is Outbound (one internal source causing an external lockout). Collateral Damage: The primary victims are "neighbor" tenants who share the same network interface. Trigger: Usually caused by credential stuffing, API scraping, or poorly optimized loops in a single user’s script.
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