DDoS Shield & Under Attack Mode
EmergencyInstantly halt Layer 7 DDoS floods by engaging Cloudflare Under Attack Mode and edge challenge shields.
📖 Full Explanation
When your origin servers are threatened by Layer 7 HTTP floods, credential stuffing, or distributed botnets, speed is critical. \1 immediately engages Cloudflare's Under Attack Mode, instructing global edge data centers to present a 5-second cryptographic JavaScript challenge to all visitors, blocking volumetric botnets before a single packet reaches your origin.
⚙️ Command Options & Flags
| Option / Flag | Description | Default |
|---|---|---|
| on <domain> | Activate Under Attack Mode (forces JavaScript challenge across all incoming requests) | - |
| off <domain> | Restore normal security level (medium) | - |
| status <domain> | Inspect current security level, challenge mode, and threat scores | - |
| --level <level> | Set security sensitivity: essentially_off, low, medium, high, under_attack | under_attack |
🔬 Technical Corollary & Edge Mechanics
Calls \1. The change propagates globally across all 330+ Cloudflare points of presence within seconds via Cloudflare's Quicksilver distributed key-value configuration fabric.
🎯 Real-World DevOps Use Cases
Emergency DDoS Incident Response
Instantly mitigate an unexpected Layer 7 flood from your terminal or phone via SSH.
Post-Attack Normalization
Safely step down security sensitivity back to default without logging into web dashboards.
💻 Live Output Simulation
$ cflare shield on namishkumar.in ✔ Engaging Cloudflare Edge Shield for namishkumar.in... ✔ Security level updated: under_attack 🛡️ Under Attack Mode is now ACTIVE globally across 330+ edge locations.