Plugin DDoSDefender

DDoSDefender, real time server protection

DDoSDefender is a Java Edition plugin for Bukkit, Paper, Purpur, and Spigot that helps protect a Minecraft server from bot waves and abusive connection traffic. It works directly in the Netty pipeline, examining handshake packets and source addresses in real time before applying dynamic rate limits or cancelling suspicious packets.

Its detection suite analyzes LoginStart activity with heuristic checks covering naming patterns, UUID fingerprints, reconnect behavior, and swarm signals. AccountGuard adds risk scoring, while FastPass lets verified players reconnect smoothly. BoxToPlay presents it as an application layer defense, alongside network level protection, since it cannot absorb volumetric attacks against the physical network.