What should I do if my Ubuntu server is under a DDoS attack, and I'm using Cloudflare?

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Grade: Education Subject: Support

Asked by: USER4772

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USER1316

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If your Ubuntu server is under a DDoS attack while using Cloudflare, Cloudflare will automatically mitigate most attacks. However, you should monitor your Cloudflare dashboard for attack details. Consider enabling Cloudflare's WAF and configuring firewall rules to block malicious traffic. Ensure your server is patched and up-to-date to minimize vulnerabilities. If the attack is severe, consider temporarily enabling 'Under Attack Mode' in Cloudflare.

Answered on 26 Agustus 2025

What should I do if my Ubuntu server is under a DDoS attack, and I'm using Cloudflare?

Question

Answer (86)

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