LPX AntiPacketExploit v3.8.4

#1 BuiltByBit Plugin ~ Protects your server from crash packet exploits ~ Folia Support
Switched to PacketEvents
Improved NettyB
Made lots of checks available for all versions
Hopefully fixed new NettyCrash exploit
Storing flags into file
Improved packet logger outputs
Automatically packet logging heavy packets
Improved default config settings
Added support for a few unusued versions (1.9 1.10 1.11 1.14)
Fixed color config reloading of /lpx output
Added %check% %type% %vl% %max-vl% placeholders in kick-alert

IMPORTANT NOTES | UPDATE AT YOUR OWN RISK
This is a very important breaking update. I started using PacketEvents as library instead of my own and changed the obfuscator, so this may have caused some bugs even if this version was hardly tested on 1.8 and 1.21 in servers with +100 players without any issues.
Some customers may not be able to run this version; if that's your case, then open a ticket on our discord and we will fix your license as soon as possible.
It's recommended to reset your config entirely or manually apply the changes you can find here.
Plugman reload is not supported anymore.

I put a lot of effort into fixing some new exploits and found a new, unique way to fix them. Thanks to the Xynis guys and the Smog owner for giving me the willpower to take this big step.

Special thanks: Polar staff, retrooper, noopey , MachineBreaker , SquareCode , @meowk1e, BadNull, NoJokeFNA for the help in general!

I will donate to PacketEvents soon, thanks for supporting LPX!
  • Fixed some Ayakashi bypasses
  • Fixed packetlogger whitelist/blacklist
  • Re-enabled WindowB for 1.18.2
  • Added negative slot/button check for SWAP action in WindowB
  • Now supporting 1.20.2
  • Now supporting Folia
  • Added blacklist/whitelist modes for players/packets for the packet-logger
  • Not supporting 1.19.0 1.19.1 1.19.2 1.19.3 anymore (ONLY 1.19.4)
  • New check PlaceC for 1.16
  • Reduced default max-vl for PlaceA
  • Fixed dispenser placing while in printer mode
  • Added 1.20 support
  • Moved the packet logger to the console (no more file generation)
  • Added container opening delay
  • Enabled trapdoor redstone check by default for 1.13-1.19.3 versions
  • Enabled discard offline packets by default
  • Fixed packet discarding after disconnection
  • Decreased default max-vl values for FloodD/E
  • Improved FloodD for a faster detection
  • Added decodeTime info for every packet flag
  • Fixed important WindowA bypass
  • Enabled FloodE for 1.12
GIST UPDATED CONFIG FILE
Buy a license now
$19.97
EULA
Standard EULA
Use on any projects you own with attribution
Support
Standard
Includes:
Download the resource
Access new updates
Support from the creator
Support duration
Lifetime
Share and earn
Refer this resource and earn a 10% commission.
404,247 Views
4,251 Purchases
4,422 Downloads
Jun 8, 2020 Published
Jul 5, 2026 Updated
5.00 star(s)
Average rating (141)
8.3 MB File size
Open source
  1. No
DRM-free
  1. No
Unobfuscated
  1. No
Type
  1. Protection
  1. Staff
  1. Patch
Supported software
  1. Paper
  1. Folia
  1. Purpur
Supported versions
  1. 1.21.11
  1. 1.21.8
  1. 1.21.5
  1. 1.21.4
  1. 1.21.2
  1. 1.21
  1. 1.20
  1. 1.19
  1. 1.18
  1. 1.17
  1. 1.16
  1. 1.15
  1. 1.14
  1. 1.13
  1. 1.12
  1. 1.11
  1. 1.10
  1. 1.9
  1. 1.8
Supported languages
  1. English
Creator
Owner
Recommended for you
Create items, blocks, mobs, emojis, and more with automatic resourcepack generation!
5.00 star(s) 54 ratings
3,263 purchases
Protect your server from crash/dupe/packet exploits with the ultimate security fix plugin.
5.00 star(s) 45 ratings
3,137 purchases
High Performance | Customizable | Cross-Version | GeyserMC | Folia Support
4.50 star(s) 72 ratings
2,825 purchases
All-in-one dungeon creator. Create unlimited, timed dungeon experiences with your own builds
4.50 star(s) 73 ratings
2,588 purchases
The ultimate chat formatting, filtering & anti-spam. Can replace 200+ plugins. Folia supported.
5.00 star(s) 129 ratings
2,277 purchases
Share and earn
Refer this resource and earn a 10% commission.
404,247 Views
4,251 Purchases
4,422 Downloads
Jun 8, 2020 Published
Jul 5, 2026 Updated
5.00 star(s)
Average rating (141)
8.3 MB File size
Open source
  1. No
DRM-free
  1. No
Unobfuscated
  1. No
Type
  1. Protection
  1. Staff
  1. Patch
Supported software
  1. Paper
  1. Folia
  1. Purpur
Supported versions
  1. 1.21.11
  1. 1.21.8
  1. 1.21.5
  1. 1.21.4
  1. 1.21.2
  1. 1.21
  1. 1.20
  1. 1.19
  1. 1.18
  1. 1.17
  1. 1.16
  1. 1.15
  1. 1.14
  1. 1.13
  1. 1.12
  1. 1.11
  1. 1.10
  1. 1.9
  1. 1.8
Supported languages
  1. English
Creator
Owner
Recommended for you
Create items, blocks, mobs, emojis, and more with automatic resourcepack generation!
5.00 star(s) 54 ratings
3,263 purchases
Protect your server from crash/dupe/packet exploits with the ultimate security fix plugin.
5.00 star(s) 45 ratings
3,137 purchases
High Performance | Customizable | Cross-Version | GeyserMC | Folia Support
4.50 star(s) 72 ratings
2,825 purchases
All-in-one dungeon creator. Create unlimited, timed dungeon experiences with your own builds
4.50 star(s) 73 ratings
2,588 purchases
The ultimate chat formatting, filtering & anti-spam. Can replace 200+ plugins. Folia supported.
5.00 star(s) 129 ratings
2,277 purchases
Top