Residential proxy DDoS is an evasion-focused use of attack infrastructure, routing flood traffic through proxies hosted on real home internet connections, and defending against it is increasingly part of a thorough DDoS test. Proxy networks resell access to IPs assigned to consumer broadband and mobile carriers. By tunneling L7 requests through them, an attacker makes malicious traffic originate from the same address space as genuine customers.
Why it matters in DDoS testing
This is the hardest source model to filter. IP reputation, geo-blocking, and ASN-based rules all degrade when the attack rides legitimate residential and CGNAT space, where blocking a range may sever real users. The defense shifts from network identity to behavior: request fingerprinting, challenge-response, and bot management that judge how a client acts rather than where it comes from. A test measures how cleanly those L7 controls separate the two.
For how that separation factors into measured resilience, see DDoS Resilience Testing.