Many Minecraft hostings (like Oracle Cloud Free Tier, AWS Free Tier, or even a home router) have built-in firewalls. You can configure them at zero cost.
Let's assume your server is under attack right now. Follow these steps in order (all free):
Minute 0-2:
Enable whitelist (/whitelist on). Then /kickall (or restart server). Bots are now locked out. Real players message you on Discord for whitelist add.
Minute 3-5:
Add rate-limit=10 in server.properties and restart again. minecraft bot attack free
Minute 6-10:
Install BotFilter plugin (drag and drop into plugins folder). Restart server. Run /botfilter auto – it learns normal traffic patterns within 2 minutes.
Minute 11-15:
Set up iptables or UFW rate limiting (if on a VPS). Use the ufw limit command above.
Minute 16-20:
Install CaptchaPlugin. Set it to activate only when online players > 15 (to not annoy regulars). Now bots cannot bypass. Many Minecraft hostings (like Oracle Cloud Free Tier,
Result: Your server is now resistant to 99% of free bot attacks. Total cost: $0. Total time: ~20 minutes.
Small server owners (often hosting on home connections or cheap VPS) search for free solutions because:
Minecraft servers, particularly those with large player bases or competitive gameplay, are frequent targets of bot attacks (DDoS and automated login floods). Many server owners search for “Minecraft bot attack free” solutions to avoid costly mitigation services. This paper examines the nature of these attacks, why truly free protection is rare, the dangers of free “solutions,” and practical low-cost or properly free strategies for legitimate defense. Small server owners (often hosting on home connections
Many server owners panic and immediately look at paid solutions like TCPShield, advanced Cloudflare plans, or premium anti-bot plugins. While those work, they cost money—often more than the server itself.
You can stop 90% of basic bot attacks with free, built-in tools.
sudo ufw limit proto tcp from any to any port 25565 comment 'Minecraft bot protection'
This allows only 6 connections per 30 seconds per IP.