v0.3: 6-layer architecture complete
Layers:
Layer 1: XDP/eBPF — TCP state machine, SYN throttle, blacklist, ringbuf
Layer 2: PoW Challenge — SHA-256 hashcash, dynamic difficulty, constant-time verify
Layer 3: Rust Core — HMAC handshake, rate limit, death code (existing)
Layer 4: Velocity — Physics check, CAPTCHA, protocol verification
Layer 5: Paper — Heartbeat, auto-registration (existing)
Layer 6: Traffic Intel — EWMA, 168h profiling, reputation, alerts
Infra: XDP→Prometheus metrics, ClickHouse + Grafana dashboard, Docker Compose
Testing: 100-IP DDoS simulation, MHDDoS ref analysis, load test report
Fixes: VarInt sign extension UB, pure ACK deadlock, RST/FIN cleanup
Ref: MHDDoS, Sonar, LimboFilter, AtomGuard, Infrarust, MC-XDP-eBPF, PowGo