Can a CDN Protect a UDP Game Server Under Attack?

Standard web CDNs cannot proxy UDP traffic, and while a few Layer 4 CDNs can reverse-proxy UDP, they suffer from latency sensitivity and plan restrictions. The mainstream choices for UDP game servers under DDoS attack are game shields (SDK encapsulation + hidden origin + millisecond-level scheduling) or Layer 4 high-defense IPs (full-port scrubbing but no protocol encryption), depending on whether the client can integrate an SDK and tolerance for latency.