NoCheatPlus

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NoCheatPlus

Detect and fight the exploitation of various flaws/bugs in Minecraft!

Minecraft 1.11.2 and latest features are currently only available on Jenkins - once things stabilize, stable builds will be available here again.

Introduction

NoCheatPlus attempts to prevent cheat clients from exploiting weaknesses of Minecraft or its protocol, making your server more safe. Checks cover a wide range of issues including flying and speeding, fighting hacks, fast block breaking and nukers, inventory hacks, chat spam and other types of malicious behaviour. For a more complete list have a look at the Features Page.

NoCheatPlus puts emphasis on configurability and allows you to customize actions that are carried out when a player fails a check (e.g. silent cancelling, executing commands, just logging). Bypass permissions allow to control what check to apply for which players, all checks can be deactivated in the configuration, also having the option for world-specific configuration files. Many checks allow more detailed configuration to adjust sensitivity.

Certainly NoCheatPlus is not a magical bullet, it uses a lot of heuristics and even guessing, so you will encounter false positives here and there and also not catch every single violation. Example video of how NoCheatPlus blocks cheats (outdated plugin version).

NoCheatPlus was introduced by NeatMonster, building on the code base of NoCheat by Evenprime.

Make plugins like mcMMO or MachinaCraft more compatbile with NoCheatPlus. Not all existing plugins are covered (yet), but you can leave a note or create an issue/ticket request for cncp. Phasing out: Citizens 2 should work with NCP out of the box, MagicSpells are working on compatibility too - rest will be integrated into NCP.

Orebfuscator

Orebfuscator fights all sorts of X-ray-hacks by altering the map information that is sent to the players, such that they have to mine blocks to actually reveal what is behind. Virtually a "must have". (Latest versions of Spigot contain features of Orebfuscator.)

Downloads and History of Changes

Download officially approved versions on the Files page at BukkitDev.
Development builds have been moved over to the Jenkins at md-5.net.
Do not download from any other source, do not use jars other people send you.
Change lists: Wiki (digest) | Jenkins (by build number) | GitHub (all commits).
Source code
~~Plugin statistics are no longer reported to mcstats.org~~.

Support

Documentation Resources

Consider first: Frequently asked Questions and Known Issues.
Wiki (Configuration, Permissions, Commands)
Developers might have a look at the page describing the API of NoCheatPlus.

Contact us

Quick questions can be asked on this page,
or on IRC (Server: irc.spi.gt | Default-Port: 6667 | SSL-Port: 6697 | Channel: #nocheat | Web client: WebIRC)
For real issues or feature requests please create a new issue/ticket or add to an existing issue/ticket.
To send information that is not to be seen by all, you can also reach us by PM to @asofold and @MyPictures. @IceAP (IRC: ICE) will also help or redirect the conversation. Please do not contact the user 'NoCheatPlus', it is for administrative purposes only and will likely not be answered in time. Keep to BukkitDev and GitHub for support, do not trust users on other forums or websites, also not if their nick names are the same as NCP staff on BukkitDev.

Please always state the output of the "ncp version" command to let us know versions in use (users of cncp also the "cncp" command).

Comments

_ForgeUser8668117

Join Date: 3/31/2012
Posts: 108
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#1568 Posted Aug 13, 2012

Seems like I don't know how to enable fly only in creative....

# Main configuration file for NoCheatPlus. Read "Instructions.txt".
miscellaneous:
  allowclientmods: true
  opinconsoleonly: false
  protectplugins: true
  moving:
    creativefly:
      active: false
      horizontalspeed: 9999
      maxheight: 9999
      verticalspeed: 9999
      actions: log:flyshort:3:5:f cancel vl>100 log:flyshort:0:5:if cancel vl>400 log:flylong:0:5:cif cancel
    survivalfly:
      active: true
      actions: log:flyshort:3:5:f cancel vl>100 log:flyshort:0:5:if cancel vl>400 log:flylong:0:5:cif cancel

_ForgeUser8668117
- Join Date: 3/31/2012
- Posts: 108
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#1567 _ForgeUser8668117

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Posted Aug 13, 2012
@asofold

No I didn't, thought I assume that it should show something like "You don't have the permission to use this command.", not that the command doesn't exist.

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Forge_User_61842651
- Join Date: 8/29/2011
- Posts: 2,535
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#1566 Forge_User_61842651

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Posted Aug 13, 2012
@LaserCucumber

Are you sure you had permission when trying ?

If people don't have permission it will show that message. The commands seems to work, same with the ncp alias.

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_ForgeUser8668117
- Join Date: 3/31/2012
- Posts: 108
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#1565 _ForgeUser8668117

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Posted Aug 13, 2012
@MyPictures

Yet, /nocheatplus = unknown command.

Last edited by _ForgeUser8668117: Aug 13, 2012

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MyPicturesCP
- Join Date: 10/30/2011
- Posts: 927
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#1563 MyPicturesCP

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Posted Aug 13, 2012
@KevinEssence

A ticket has already been made for this bug. http://dev.bukkit.org/server-mods/nocheatplus/tickets/115-cant-pillar-up/

@laserlag

It has yea. Neat removed some command because they were useless. Only command that is left in 3.7 is /nocheatplus reload

@deleted_8156133

Neat is working on that. @Asofold found some issues in it which we need to fix.

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_ForgeUser8156133
- Join Date: 12/6/2016
- Posts: 139
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#1562 _ForgeUser8156133

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Posted Aug 13, 2012
Does antispam work yet? I got this problem... here: http://puu.sh/UYkN

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_ForgeUser2531777
- Join Date: 5/7/2009
- Posts: 68
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#1561 _ForgeUser2531777

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Posted Aug 13, 2012
Was the command for /ncp playerinfo [user] changed? It does not work me on the later dev builds.

Edit: I looked at the 1.3.1 permissions page and it looks like it was removed... Any reason why? This was the most useful part of NoCheat for us. We don't like having all violations streamed live as it clogs up the chat. We would check people's violations once they were called out. I hope this gets added back in.

Last edited by _ForgeUser2531777: Aug 13, 2012

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_ForgeUser8047260
- Join Date: 12/10/2011
- Posts: 1,711
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#1560 _ForgeUser8047260

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Posted Aug 13, 2012
Players keep suffocating on all 7 servers while stacking blocks..please fix.

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Forge_User_61842651
- Join Date: 8/29/2011
- Posts: 2,535
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#1559 Forge_User_61842651

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Posted Aug 13, 2012
@Pixiyo

No idea but i made it a ticket: http://dev.bukkit.org/server-mods/nocheatplus/tickets/134-sometimes-the-server-get-lagg-spikes-and-then/

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_ForgeUser6842062
- Join Date: 5/19/2011
- Posts: 399
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#1558 _ForgeUser6842062

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Posted Aug 13, 2012
Sometimes the server get lagg spikes, and then everbody on my server laggs for a moment. We did not have any lagg spikes without NCP.

Any idea how to fix this?

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matagin
- Location: Hobart
- Join Date: 10/26/2008
- Posts: 90
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#1557 matagin

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Posted Aug 13, 2012
Damage from teleporting FIXED! Thanks so much! Keep up the great work guys! We appreciate it!

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Forge_User_61842651
- Join Date: 8/29/2011
- Posts: 2,535
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#1555 Forge_User_61842651

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Posted Aug 13, 2012
@weja93

It is Craftbukkit, you can not hover with client side mods but you can fly.

(They could try to adjust by sending commands that a server side plugin could use to allwo the player hovering by setting to creative fly, but probably they are hoping for a CraftBukkit fix for this .)

You can set the bukkit intern speed limits with CompatNoCheatPlus by activating the set-speed hook, then NCP should do the speed limiting.

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MyPicturesCP
- Join Date: 10/30/2011
- Posts: 927
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#1554 MyPicturesCP

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Posted Aug 13, 2012
@MineCraftMyph

Yea we may make that if you would be so nice and make a ticket for it ^^

@gepardo43

The NoFall check uses now packet inspection to detect a NoFall cheat. This method is really experimental in NC+ 3.7 and may bug out as you say. @NeatMonster is working hard on it to make it as good as possible. We need more info's to fix this (What is the player doing? Which version of NC+ and bukkit do you use?,...), we cant just:

open eclipse
write some letters and numbers
press FINISH!

That's now how it works... we need as much info's as possible to reproduce this. After that @NeatMonster can use his debug tools and try to track that bug.

@aphilosopher

x.X
Last edited by MyPicturesCP: Aug 13, 2012

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_ForgeUser8628520
- Join Date: 3/23/2012
- Posts: 133
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#1553 _ForgeUser8628520

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Posted Aug 13, 2012
@MyPictures

smarty pants :P

ty tho

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ChrisMLane
- Join Date: 5/19/2011
- Posts: 442
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#1552 ChrisMLane

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Posted Aug 13, 2012
@gepardo43

When did you last download NoCheatPlus? There have been a lot of recent changes to fix NoFall problems.

Try the latest development build.

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_ForgeUser9395334

Join Date: 8/12/2012
Posts: 221
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#1551 Posted Aug 13, 2012

15:28:02 [INFO] [NoCheatPlus] Lisep failed NoFall: tried to avoid fall damage for ~6.00 block(s). VL 2.
15:28:04 [INFO] [NoCheatPlus] rod456 failed NoFall: tried to avoid fall damage for ~5.00 block(s). VL 2.
15:28:04 [INFO] [NoCheatPlus] DaFuq failed NoFall: tried to avoid fall damage for ~5.00 block(s). VL 2.

Its allerting for every player. Fix

Last edited by _ForgeUser9395334: Aug 13, 2012

_ForgeUser8713241
- Join Date: 4/8/2012
- Posts: 355
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#1550 _ForgeUser8713241

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Posted Aug 13, 2012
[Suggestion #1]

Would you be able to add an Command Cooldown, so players aren't able to spam commands, or simply add / to the spam detection.
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MyPicturesCP
- Join Date: 10/30/2011
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#1549 MyPicturesCP

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Posted Aug 13, 2012
@weja93

Strange... this bug may come from the new speedcheck API in craftbukkit. Maybe you can fix that with CNCP: http://dev.bukkit.org/server-mods/compatnocheatplus-cncp/

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_ForgeUser6919177
- Join Date: 5/29/2011
- Posts: 197
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#1548 _ForgeUser6919177

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Posted Aug 13, 2012
With the newest nocheatplus I get "Weja moved too quickly" and I get pulled back to ground from time to time (not always) I can fly long distances but sometimes it pulls be back ground.

I am OP and with .* permission.

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_ForgeUser7300879
- Join Date: 7/31/2011
- Posts: 59
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#1547 _ForgeUser7300879

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Posted Aug 13, 2012
Thanks. You're awesome :D

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Project ID

38212
Created

Apr 2, 2012
Last Released File

Jan 11, 2018
Total Downloads

1,897,082
License

GNU General Public License ver...

Bukkit

NoCheatPlus

Bukkit Plugins

NoCheatPlus

Table of Contents

Introduction

Recommended

ProtocolLib

CompatNoCheatPlus (cncp)

Orebfuscator

Downloads and History of Changes

Support

Documentation Resources

Contact us

Comments

About This Project

Categories

Members

Recent Files

Bukkit