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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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

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

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Posted Apr 25, 2012
Suggestion, make an integrated feature that when someone is banned for spamming, it kickbans or kicks everyone with that IP currently logged in or something?

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_ForgeUser7536780

Join Date: 12/3/2016
Posts: 513
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#448 Posted Apr 25, 2012

From the 'Openinv' Developer

I'll put up a bypass, but you should tell NoCheatPlus that they're screwing other people's plugins.
If you can, please tell them that whatever they're doing is changing CommandSender into a non-Player type. i.e. (sender instanceof Player) is false.

Last edited by _ForgeUser7536780: Apr 25, 2012

_ForgeUser8732517
- Join Date: 4/12/2012
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#447 _ForgeUser8732517

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Posted Apr 25, 2012
Help please！What's a “Nodus hacked client”? Nothing can stop it from cheating except the ban hammer...........

Last edited by _ForgeUser8732517: Apr 25, 2012

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_ForgeUser7568317

Join Date: 9/18/2011
Posts: 64
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#446 Posted Apr 25, 2012

Its not listening to its own config!

moving:
    runfly:
      active: true
      allowfastsneaking: false
      allowfastblocking: false
      maxcooldown: 10000
      actions: log:cheating:1:300:c
      checknofall: false
      nofallaggressivemode: false
      nofallactions: log:nofall:0:5:cif
      flying:
        allowflyingalways: false
        allowflyingincreative: true
        flyingspeedlimithorizontal: 1000
        flyingspeedlimitvertical: 500
        flyingheightlimit: 1024
        actions: log:cheating:1:300:c
      tracker:
        active: true
        actions: cmd:kick
miscellaneous:
  allowclientmods: true
clientmods:
  allow: true

AND STILL PEOPLE CANT FLY FOR 10 SECONDS BEFORE BEING KICKED note that it has worked before... sometimes

Last edited by _ForgeUser7568317: Apr 25, 2012

fromgate
- Join Date: 9/16/2011
- Posts: 1,070
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#445 fromgate

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Posted Apr 25, 2012
@Aangiix3 Hello, I have noticed that "Chest Finder" on Nodus is bypassing both NoCheatPlus an Orebfuscator, could you implement a fix for that? Would be very much appreciated.

You need to configure Orebufscator to hide the chests.

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fromgate
- Join Date: 9/16/2011
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#444 fromgate

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Posted Apr 25, 2012
Hello! Is NoCheatPlus contains same feature: http://dev.bukkit.org/server-mods/anti-nyan/

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_ForgeUser6934712
- Join Date: 5/31/2011
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#443 _ForgeUser6934712

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Posted Apr 25, 2012
@np98765

something like this would be quality.

like, next time a user comes in with Nyan client and tries a -crash tp command, they get broadcast as a hax0r and hoofed out.

add this!

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nikgenic
- Join Date: 8/14/2011
- Posts: 339
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#442 nikgenic

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Posted Apr 24, 2012
Oh,

You should add a vanishing plugin to your "Recommended" plugins list. :D

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_ForgeUser8156133
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#441 _ForgeUser8156133

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Posted Apr 24, 2012
@missingscrews

Lol, sexy rubbing XD

But seriously that glitch might be caused because the player is able to go inside another player or something. I hope they can fix this check or remove it. I think he said he will remove it because it's so glitchy.

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nikgenic
- Join Date: 8/14/2011
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#440 nikgenic

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Posted Apr 24, 2012
Hey... I had a random idea that probably won't work.

As you know, all the Nodus commands are prefixed with a ' - '. Is there any way to force a user to use a command?

For example, Essentials has a /sudo command. I can type "/sudo NeatMonster suicide" and make you commit suicide.

Is there any way to force a user to type '-spam 5 I am using Nodus' and have it execute as a Nodus command?

It wouldn't stop ALL griefing clients, but it would definitely be a nice advantage to be able to check who is using Nodus.

If this is possible. I probably just wasted 30 seconds of my life typing something that isn't remotely possible.

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_ForgeUser2405383
- Join Date: 4/22/2009
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#439 _ForgeUser2405383

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Posted Apr 24, 2012
@asofold

Yes, the kids on my server call it sexy rubbing. Running into another player causes both players to lag and click through floors. Changing unpushable to false gets rid of it.

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_ForgeUser6878637
- Join Date: 5/23/2011
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#438 _ForgeUser6878637

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Posted Apr 24, 2012
@Aangiix3

Do what @asofold said and use Orebfuscator! NoCheat+ does nothing to stop wallhack or X-ray, which are the same methods used for the chest finder in every client out there. If you turn on ProximityHider, you will severely hinder the chest finder and X-Ray.

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Forge_User_61842651
- Join Date: 8/29/2011
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#437 Forge_User_61842651

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Posted Apr 24, 2012
@Aangiix3

That is the realm of Orebfuscator!

Use the proximity-hider feature of Orebfuscator for that.

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_ForgeUser7515778

Join Date: 9/8/2011
Posts: 96
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#436 Posted Apr 24, 2012

also, spammers are somehow causing this, and thus not getting caught other than by my staff:

2012-04-21 11:40:41 [SEVERE] Could not pass event PlayerChatEvent to NoCheatPlus
java.util.IllegalFormatConversionException: d != java.lang.String
	at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:4045)
	at java.util.Formatter$FormatSpecifier.printInteger(Formatter.java:2748)
	at java.util.Formatter$FormatSpecifier.print(Formatter.java:2702)
	at java.util.Formatter.format(Formatter.java:2488)
	at java.util.Formatter.format(Formatter.java:2423)
	at java.lang.String.format(String.java:2889)
	at me.neatmonster.nocheatplus.checks.chat.NoPwnageCheck.getParameter(NoPwnageCheck.java:182)
	at me.neatmonster.nocheatplus.actions.types.ActionWithParameters.getMessage(ActionWithParameters.java:42)
	at me.neatmonster.nocheatplus.actions.types.ConsolecommandAction.getCommand(ConsolecommandAction.java:30)
	at me.neatmonster.nocheatplus.checks.Check.executeConsoleCommand(Check.java:78)
	at me.neatmonster.nocheatplus.checks.Check.executeActions(Check.java:68)
	at me.neatmonster.nocheatplus.checks.chat.NoPwnageCheck.runCommands(NoPwnageCheck.java:234)
	at me.neatmonster.nocheatplus.checks.chat.NoPwnageCheck.check(NoPwnageCheck.java:59)
	at me.neatmonster.nocheatplus.checks.chat.ChatCheckListener.chat(ChatCheckListener.java:74)
	at sun.reflect.GeneratedMethodAccessor158.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:461)
	at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:786)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:764)
	at lishid.orebfuscator.hook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:117)
	at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113)
	at lishid.orebfuscator.hook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:60)
	at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:85)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:622)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:506)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

_ForgeUser7800795
- Join Date: 11/2/2011
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#435 _ForgeUser7800795

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Posted Apr 24, 2012
Hello, I have noticed that "Chest Finder" on Nodus is bypassing both NoCheatPlus an Orebfuscator, could you implement a fix for that? Would be very much appreciated.

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Forge_User_61842651
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#434 Forge_User_61842651

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Posted Apr 24, 2012
@lbb601

I doubt there is one without glitches...

but you should deactivate the unpushable check by default, it is causing some issues.

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_ForgeUser6878637
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#433 _ForgeUser6878637

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Posted Apr 24, 2012
@lbb601

Not really, I would switch over immediately if you want your server to have some form of real protection.

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_ForgeUser7679198
- Join Date: 10/9/2011
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#432 _ForgeUser7679198

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Posted Apr 24, 2012
So I'm on no cheat atm and I'm debating on switching over to NC+. Ive heard there were a few glitches/bugs with this new one..?

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_ForgeUser7493388
- Join Date: 9/3/2011
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#431 _ForgeUser7493388

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Posted Apr 24, 2012
I don't know how to setup NoPwnage.:(

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_ForgeUser8156133
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#430 _ForgeUser8156133

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Posted Apr 23, 2012
@NeatMonster

I have a suggestion. For MCBans users commands don't take effect imediatly, so I would recommend adding a "cancel" here.

chat: nopwnage: active: true warnplayers: false warnothers: false warnlevel: 400 warntimeout: 30000 banlevel: 800 actions: log:nopwnage:2:5:cf cancel cmd:ban cmd:ban-ip

Because of this: http://gyazo.com/0de343223387496f11a7204f127f0261

I haven't tested this fully, I added it a second ago, but in theory it should work, because the OLD antispam worked fine with mcbans :)

EDIT: I tested this, and it does not work, I think it cancels the commands or something.

All in all, add a MUTE if you use mcbans until this is fixed!
Last edited by _ForgeUser8156133: Apr 24, 2012

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Project ID

38212
Created

Apr 2, 2012
Last Released File

Jan 11, 2018
Total Downloads

1,897,004
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

All in all, add a MUTE if you use mcbans until this is fixed!

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