DDos在 Cloudflare中, 是很強而有力的防禦工具, 目前已主動提供於免費方案中可以啟用警示服務了.
詳情可以參考這篇官方資料:
https://support.cloudflare.com/hc/en-us/articles/360053216191-Understanding-Cloudflare-DDoS-alerts
而什麼程度的流量會被觸發呢? 有以下兩種條件:
- HTTP attacks for a duration over 2 minutes that generate more than 2,000 requests per second
- L3/L4 attacks for a duration over 2 minutes that generate more than 20,000 packets per second
所以若有需要知道被 DDos的用戶, 可以透過建立通知: HTTP DDoS Attack Alerter (中文為: HTTP DDoS 攻擊警報器) 來進行設置.