Bots rapidly connect and disconnect, filling the server logs, triggering resource-heavy join events, and spamming the in-game chat.

Mass sending of Handshake and LoginStart packets. This forces the server to process encryption and authentication for thousands of non-existent accounts.

(if not already installed):

Build a secure base to protect your creations and resources:

It uses sophisticated algorithms to identify bots by analyzing connection patterns, IP reputation, and login behavior.

: Often used on "cracked" servers, it requires players to register or log in, effectively stopping bots that cannot interact with in-game prompts.

For server owners, the stakes are high. A successful attack can cause severe lag, server crashes, and the destruction of worlds that players may have spent months building. In some cases, attackers deploy botnets that turn infected servers into unwitting participants in larger DDoS campaigns, which can have legal consequences for the server owner. While free bot attack tools and scripts are readily available online, it is equally possible to build a robust, free defense against them using the tools and techniques outlined in this guide.

: Ticks Per Second (TPS) fall below the optimal 20, causing noticeable lag and slow movement. Service Unavailability

To set up UFW on your Linux server:

: