Freedom251 › Minecraft Anti-Cheat Plugins
NPN Advanced Packet Protection
What NPN Advanced Packet Protection is
NPN Advanced Packet Protection is a free, self-hosted Minecraft server plugin for handling malformed packets, packet abuse, inventory exploits, and protocol manipulation. It is designed for packet protection rather than traditional anticheat work. Listed protections include WindowClick checks, session-based detection, packet-burst analysis, duplicate and replay detection, packet-state validation, fingerprinting, and configurable thresholds. Version 5.0.0 adds memory checks, packet-window statistics, packet-context metadata, and configurable memory thresholds. Its modular architecture gives each protection module a session manager, context system, packet trackers, validators, cancel engine, and violation engine. The maker describes it as lightweight, with low memory use and optimization for high player counts. It suits SMP, survival, PvP, and network servers. NPN supports Paper, Spigot, Bukkit, and Purpur on Minecraft 1.20.1 through the latest listed version, using Java 17 or newer. PacketEvents (latest) is required before installation. NPN is currently in beta.
Who it suits
NPN suits Minecraft server operators running SMP, survival, PvP, or network environments who need packet-focused protection. It is intended for Paper, Spigot, Bukkit, and Purpur servers on Java 17 or newer.
What it does well
- Free plan with self-hosted deployment
- Covers malformed packets and inventory exploits
- Modular detection and violation engines
- Designed for high player counts
- Supports four server software options
What to know first
- PacketEvents (latest) is required
- Currently in beta
- Minecraft support starts at 1.20.1
- Additional protections remain planned
Verdict
NPN Advanced Packet Protection provides focused packet defenses for compatible Minecraft servers. Its broad listed checks and modular structure are balanced by the required dependency and beta status.
Facts from NPN Advanced Packet Protection's own pages
- Architecture
- Each protection module has its own session manager, context system, packet trackers, validators, cancel engine, and violation engine. · hangar.papermc.io, 8 Oct 2026
- Beta status
- NPN is currently in Beta, with additional protection modules and improvements planned for future releases. · hangar.papermc.io, 8 Oct 2026
- Compatibility
- The listing specifies Minecraft 1.20.1–Latest, Java 17 or newer, and Paper, Spigot, Bukkit, or Purpur server software. · hangar.papermc.io, 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. · hangar.papermc.io, 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. · hangar.papermc.io, 8 Oct 2026
- Dependency
- PacketEvents (latest) is required, and the maker says to download it before installing NPN. · hangar.papermc.io, 8 Oct 2026
- Intended servers
- The maker lists SMP, survival, PvP, and network environments as suitable uses. · hangar.papermc.io, 8 Oct 2026
- Latest release details
- Version 5.0.0 adds memory checks, packet-window statistics, packet context metadata, and configurable memory thresholds. · hangar.papermc.io, 8 Oct 2026
- License
- The listing identifies NPN's license as LGPL. · hangar.papermc.io, 8 Oct 2026
- Minecraft and Java versions
- The listed compatibility is Minecraft 1.20.1 to Latest and Java 17 or newer. · hangar.papermc.io, 8 Oct 2026
- Modular design
- Each protection module has a session manager, context system, packet trackers, validators, cancel engine and violation engine. · hangar.papermc.io, 8 Oct 2026
- Not an anticheat
- The maker says NPN focuses on packet protection instead of functioning as a traditional anticheat. · hangar.papermc.io, 8 Oct 2026
- Performance
- The maker describes NPN as lightweight, low memory usage, and optimized for high player counts. · hangar.papermc.io, 8 Oct 2026
- Purpose
- NPN is a lightweight Minecraft server plugin designed to protect against malformed packets, packet abuse, inventory exploits, and protocol manipulation. · hangar.papermc.io, 8 Oct 2026
- Server compatibility
- The listing names Paper, Spigot, Bukkit and Purpur as supported server software. · hangar.papermc.io, 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. · hangar.papermc.io, 8 Oct 2026
- Support
- The maker invites users to report bugs, exploits, and false positives, request installation assistance or features, and join Discord. · hangar.papermc.io, 8 Oct 2026
Where NPN Advanced Packet Protection stands on Freedom251
- Minecraft Anti-Cheat Plugins#31 of 57
- Minecraft anti-cheat plugins#31 of 53