ModsJava
NPN Protection - Lightweight Anti Crash & Exploit Plugin
NPN - Advanced Exploits & Server Crashers Protection (BETA) ----------------------------------------------------------------- Version 1.20.1 → Latest…
⬇ Download on SpigotNPN - Advanced Exploits & Server Crashers Protection (BETA)
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Version
1.20.1 → Latest
Supported Software
Paper • Spigot • Bukkit • Purpur
About
NPN is a lightweight packet-security plugin built for modern Minecraft servers.
Unlike traditional anticheats, NPN focuses on protecting your server from malformed packets, packet abuse, inventory exploits and protocol manipulation while maintaining high performance and minimal overhead.
The project is built around a modular detection engine where every packet system has its own session, trackers, validators and cancellation logic to reduce false positives.
NPN v4.6.0 OUT! - Latest Version.
Current Features
✔ Advanced WindowClick Protection
✔ Session-Based Detection Engine
✔ Smart Packet Burst Analysis
✔ Duplicate Packet Detection
✔ Packet Replay Detection
✔ State Validation
✔ Packet Fingerprinting
✔ Lightweight Cancel Engine
✔ Smart Violation System
✔ Configurable Thresholds
✔ BadPackets
✔ Payload Protection
✔ CustomPayload Protection
✔ Packet Flood Protection
✔ Protocol State Validation
✔ Invalid Packet Detection
Planned Features
NPN is built using a modular architecture.
Each detection module contains dedicated:
Performance
Required Plugin
PacketEvents:
https://www.spigotmc.org/resources/packetevents-api.80279/
Beta Information
This resource is currently in Beta.
New packet protection modules and major improvements will be added in future updates.
Feedback from server owners is highly appreciated.
Compatibility
Minecraft
Found a bug?
Experiencing a false flag?
Want to report an exploit?
Need installation help?
Join our Discord:
https://discord.com/invite/HHMkBmuXxm
We appreciate every report and use community feedback to improve detection accuracy.
-----------------------------------------------------------------
Version
1.20.1 → Latest
Supported Software
Paper • Spigot • Bukkit • Purpur
About
NPN is a lightweight packet-security plugin built for modern Minecraft servers.
Unlike traditional anticheats, NPN focuses on protecting your server from malformed packets, packet abuse, inventory exploits and protocol manipulation while maintaining high performance and minimal overhead.
The project is built around a modular detection engine where every packet system has its own session, trackers, validators and cancellation logic to reduce false positives.
NPN v4.6.0 OUT! - Latest Version.
Current Features
✔ Advanced WindowClick Protection
✔ Session-Based Detection Engine
✔ Smart Packet Burst Analysis
✔ Duplicate Packet Detection
✔ Packet Replay Detection
✔ State Validation
✔ Packet Fingerprinting
✔ Lightweight Cancel Engine
✔ Smart Violation System
✔ Configurable Thresholds
✔ BadPackets
✔ Payload Protection
✔ CustomPayload Protection
✔ Packet Flood Protection
✔ Protocol State Validation
✔ Invalid Packet Detection
Planned Features
- Netty Packet Protection
- Connection Abuse Protection
- Bandwidth Analysis
- Packet Quarantine Engine
- Advanced Packet Security Modules
NPN is built using a modular architecture.
Each detection module contains dedicated:
- Session Manager
- Context System
- Packet Trackers
- Validators
- Cancel Engine
- Violation Engine
Performance
- Lightweight
- Low memory usage
- Optimized for production servers
- Suitable for SMP, Survival, PvP and Network environments
Required Plugin
- PacketEvents
PacketEvents:
https://www.spigotmc.org/resources/packetevents-api.80279/
Beta Information
This resource is currently in Beta.
New packet protection modules and major improvements will be added in future updates.
Feedback from server owners is highly appreciated.
Compatibility
Minecraft
- 1.20.1 → Latest
- Paper
- Spigot
- Bukkit
- Purpur
- Java 17+
Found a bug?
Experiencing a false flag?
Want to report an exploit?
Need installation help?
Join our Discord:
https://discord.com/invite/HHMkBmuXxm
We appreciate every report and use community feedback to improve detection accuracy.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20, 1.20.6, 1.21
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Spigot — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
NPN Protection - Lightweight Anti Crash & Exploit Plugin is a free Minecraft Java mod. Compatible with Minecraft 1.20, 1.20.6, 1.21, 26.1 and newer. Downloaded 309 times (via Spigot). Download it and open it directly in the game.