A bot attack (often called a "bot flood" or "botnet attack") occurs when an attacker uses automated scripts to command hundreds or thousands of fake Minecraft clients to connect to your server simultaneously.
Forces clients (including bots) to compress packets. Many free bots don't implement compression correctly, causing their connections to fail.
A one-time setup isn't enough. Follow these free practices:
Link your free Minecraft whitelist to a Discord bot. Force users to join your Discord server and type a command to get whitelisted. Because Discord requires email or phone verification, bot attackers cannot easily automate this process. Summary Checklist for Instant Protection Action Item Tool Needed Enable Online Mode server.properties Throttle Connections bukkit.yml Install Gatekeeper Free Captcha Plugin Setup Proxy Network Velocity / BungeeCord
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: If you notice all your bot traffic is coming from a specific country where you have no players, you can use free firewall rules (like UFW on Linux) to block that country's IP range entirely.
A Java-based bot tool designed to test how your server handles multiple concurrent connections.
When a new player joins during a suspected attack, a free captcha plugin locks them in place and places a map in their inventory. The map displays a random four-digit code. The player must type this code into chat to unlock themselves. Bots cannot read textures or images, leaving them permanently trapped and isolated.
If bots bypass your firewall, these plugins analyze player behavior to distinguish humans from scripts. Prevent DDoS & Bot Attacks on your Minecraft Server A bot attack (often called a "bot flood"
: Bots rapidly connect and disconnect, filling up the console, generating massive lag, and spamming the chat.
I can provide step-by-step instructions to get your defenses up immediately. Share public link
An easy-to-use Python app that lets you connect as many bots as you want using SOCKS4/5 proxies to simulate real-world attack scenarios.
Bots repeatedly request your server's status (the ping data shown on the multiplayer menu). This consumes massive network bandwidth without the bots ever fully joining. A one-time setup isn't enough
The good news? You don’t need to buy expensive anti-bot plugins or pay for premium hosting firewalls. Here is your guide to defending your Minecraft world from bot attacks .
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If you want to simulate traffic or automate tasks, these are the most reliable community-driven projects: Mineflayer
Advanced setups use bots like Ayaka or custom setups that require players to move or type a code in chat before they can interact with the world. This stops automated bot clients from doing any damage even if they manage to join.