The original title is "Asymmetric Defense: Using Rate-Limiting to Exhaust Attacker Resources"

Short summary

A cybersecurity tutorial demonstrating asymmetric defense against DDoS attacks using CrowdSec and nftables. Rather than instantly blocking attackers, the strategy aggressively rate-limits malicious connections to 1 byte per second, forcing their systems to maintain thousands of half-alive connections and exhaust memory and thread pools. Kernel-level implementation provides resource exhaustion for attackers with zero CPU overhead on the defended server.

• •Asymmetric defense exhausts attacker resources instead of cutting connection instantly
• •Uses CrowdSec with nftables to rate-limit at 1 byte/second, forcing socket and thread exhaustion
• •Kernel-level implementation prevents CPU overhead on the defended server

Generated with AI, which can make mistakes.