Urgent DDoS Mitigation Support

My production website on a Linux server keeps dropping offline and every indicator points to an ongoing Distributed-Denial-of-Service incident. I can’t yet tell whether it’s volume-based, protocol, or application-layer, but the result is the same: total service unavailability for legitimate users.

I need an experienced security engineer to jump in immediately, determine the exact nature of the attack, stop it, and leave the box properly hardened so this doesn’t happen again. Expect direct SSH access (root) on a bare-metal VPS running Ubuntu, plus full cooperation from the hosting provider for network-level changes. Familiarity with iptables, nftables, fail2ban, nft-set, Cloudflare (or a comparable reverse-proxy/WAF), and real-time traffic inspection tools such as tcpdump or Wireshark is essential.

Deliverables
• Rapid traffic analysis and identification of the attack vector
• Live mitigation that restores normal availability
• Hardening steps (firewall rules, rate limiting, updated kernel/modules) applied and documented
• A brief post-incident report summarising what was done, evidence captured, and concrete prevention recommendations

I’m ready to begin as soon as you are and will remain on standby for any host-side actions you request.