NPN Advanced Packet Protection

What it does

Architecture

Each protection module has its own session manager, context system, packet trackers, validators, cancel engine, and violation engine.checked 8 Oct 2026

Beta status

NPN is currently in Beta, with additional protection modules and improvements planned for future releases.checked 8 Oct 2026

Compatibility

The listing specifies Minecraft 1.20.1–Latest, Java 17 or newer, and Paper, Spigot, Bukkit, or Purpur server software.checked 8 Oct 2026

Current features

Listed features include WindowClick protection, session-based detection, packet burst analysis, duplicate and replay detection, packet state validation, fingerprinting and configurable thresholds.checked 8 Oct 2026

Current protections

Listed current features include WindowClick protection, session-based detection, packet burst analysis, duplicate and replay detection, packet state validation, and configurable thresholds.checked 8 Oct 2026

Dependency

PacketEvents (latest) is required, and the maker says to download it before installing NPN.checked 8 Oct 2026

Intended servers

The maker lists SMP, survival, PvP, and network environments as suitable uses.checked 8 Oct 2026

Latest release details

Version 5.0.0 adds memory checks, packet-window statistics, packet context metadata, and configurable memory thresholds.checked 8 Oct 2026

License

The listing identifies NPN's license as LGPL.checked 8 Oct 2026

Minecraft and Java versions

The listed compatibility is Minecraft 1.20.1 to Latest and Java 17 or newer.checked 8 Oct 2026

Modular design

Each protection module has a session manager, context system, packet trackers, validators, cancel engine and violation engine.checked 8 Oct 2026

Not an anticheat

The maker says NPN focuses on packet protection instead of functioning as a traditional anticheat.checked 8 Oct 2026

Performance

The maker describes NPN as lightweight, low memory usage, and optimized for high player counts.checked 8 Oct 2026

Purpose

NPN is a lightweight Minecraft server plugin designed to protect against malformed packets, packet abuse, inventory exploits, and protocol manipulation.checked 8 Oct 2026

Server compatibility

The listing names Paper, Spigot, Bukkit and Purpur as supported server software.checked 8 Oct 2026

Status and roadmap

NPN is marked as in beta; planned features include payload protection, packet flood protection, invalid packet detection and connection abuse protection.checked 8 Oct 2026

Support

The maker invites users to report bugs, exploits, and false positives, request installation assistance or features, and join Discord.checked 8 Oct 2026