NPN Advanced Packet Protection review
A focused, open-source packet security plugin for protecting Minecraft server state.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
NPN Advanced Packet Protection is a self-hosted Minecraft server plugin built for packet security rather than traditional player-focused cheat detection. It targets servers that need protection against malformed packets, packet abuse, inventory exploits, protocol manipulation, server crashers, dupes, packet bursts, duplicate packets, packet replays, and invalid packet states. The plugin supports Paper, Spigot, Bukkit, and Purpur on Minecraft 1.20.1 through Latest, and it requires PacketEvents.
Its strongest fit is for administrators prioritizing packet and inventory protection. The feature set combines a session-based detection engine with smart packet burst analysis, duplicate packet detection, packet replay detection, packet state validation, packet fingerprinting, and advanced WindowClick protection. Configurable thresholds let server operators tune detection, while the packet cancellation engine and violation system provide defined enforcement actions. The modular architecture also includes packet trackers and validators, giving the plugin a focused toolkit for protocol and server-state abuse.
NPN is available as a downloadable Minecraft server plugin under the LGPL license, with a Free plan and no paid tiers listed. That makes its pricing structure straightforward for self-hosted servers, while the open-source model may suit operators who value inspectable licensing and a narrow technical focus. The main tradeoff is scope: NPN does not cover the broader combat and movement detection role of a traditional anti-cheat plugin, and replay analysis is not included as a separate capability. Choose it when packet-level protection is the priority; choose a broader alternative when combat and movement coverage matter more.
NPN Advanced Packet Protection pros and cons
- Where it wins
- Covers malformed packets, dupes, crashes, replays, and inventory exploits
- Configurable thresholds with packet cancellation and violation handling
- Supports Paper, Spigot, Bukkit, and Purpur from Minecraft 1.20.1 to Latest
- Where it doesn't
- Requires PacketEvents as an integration dependency
- Focuses on packet security rather than combat and movement detection
- Published as a beta plugin
NPN Advanced Packet Protection fact sheet, pricing and score →
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