NoCheatPlus
Detect and fight the exploitation of various flaws/bugs in Minecraft!
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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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.
Recommended
The following plugins might be useful to have a look at.
ProtocolLib
Allows NoCheatPlus to activate packet-level checks, covering a range of exploits that can't be monitored using ordinary means. Since roughly Minecraft 1.7.10, the fight.speed check can't work as expected anymore, due to changes in CraftBukkit. With ProtocolLib this can be repaired.
CompatNoCheatPlus (cncp)
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
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_ForgeUser9668734 Owner
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_ForgeUser15078623 Ticket Manager
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_ForgeUser16101223 Contributor
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_ForgeUser7091862 Former Author
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_ForgeUser7459264 Former Author
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Forge_User_61842651 Author
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MyPicturesCP Artist
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Posted Aug 28, 2012@MyPictures
No I am not, should I be?
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Posted Aug 28, 2012@MyPictures
No proxy enabled, CB 1.3.1 R2.0 and 1.3.2 R0.1. NC+ Build 45 and 46
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Posted Aug 28, 2012@Maxetto
did you also enable proxy? Craftbukkit version? NC+ version and build number?
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Posted Aug 28, 2012Can someone help me? I got an error randomly, i don't know what caused it, it's happened after i set nomovedtoquickly to true. Here's the error: http://pastebin.com/cgWFQE2K
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Posted Aug 28, 2012@CheeseBallz02
Check your permissions, if you are OP or have permission then you will bypass all checks. Also be sure that you use NC+ 3.7.
@erdrickk
Do you use CompatNoCheatPlus?
@457undead
On the right edge of the site.
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Posted Aug 28, 2012Do you have accept donations? if so what is the link to donate
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Posted Aug 27, 2012Have you come across the bug where you suddenly lose the ability to damage players or interact with NPC's ? I am plagued with this issue right now and being a PVP server, its bad
Could this be a no cheat issue or a bukkit 1.3 issue?
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Posted Aug 27, 2012You Can Pretty Much Use All Hacks In Gamemode.
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Posted Aug 27, 2012@asofold
For some reason the MCStats are really slow and sometimes it even trows out 404: http://metrics.griefcraft.com/
@Erik058
I guess its affected by every plugin that uses metrics, strange....
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Posted Aug 27, 2012@Erik058
How long ?
Try to disable metrics (reporttometrics: false), depending on internet connection / security settings of oyur server that could be related, though it is started in a separate thread and should not interfere, usually.
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Posted Aug 27, 2012WHY DOES IT TAKE SO LONG FOR IT TOO LOAD!?!?!?!
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Posted Aug 27, 2012@MyPictures
I know that NeatMonster has changed around things quite a bit and will :)
One might still make the basics section a little more detailed, it is unlikely to change that much, as for log actions etc.
Could it be that nofall is still/again slightly itchy with continuous jumping or something generatinglow vls somehow?
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Posted Aug 27, 2012@MasterGabeMOD
@matagin
Right, you could raise the level, though that gives you less "protection", another way could be to let it silently cancel but not log, then for higher VL start logging with "actions: cancel VL>...".
The check is not 100% accurate, most certainly, as most checks are.
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Posted Aug 27, 2012@matagin
Noswing is basically where the player doesn't move his arm when hitting something. I don't think it shows server sided to us, but yeah it's some weird hack.
The noswing checks still need tweaking I believe, but you can try to raise the VL.
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Posted Aug 27, 2012So if I want a check to check less, I raise the VL? For instance, NoSwing goes off constantly when large groups of people are fighting. What is NoSwing for exactly? Thanks.
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Posted Aug 27, 2012@chrishillz
It does work but it still needs some testing and tweaking ;)
@asofold
Yea I cant keep up with @NeatMonsters content change x.X. I will try to update the docs if I get some free time.
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Posted Aug 27, 2012So does NoPwnage work now? It's been broken for the longest time.
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Posted Aug 27, 2012@asofold
I assumed that, it makes it a bit more clear, I'll have to test things out and play with this more, thanks for the quick response!
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Posted Aug 27, 2012@fletch_to_99
Then i don't know what to do currently. CB 2357 does fix some issue about player abilities but that might not be related to pulling down.
@LordKainzo
You have to read from the left to the right, VL>.. means that what comes right will only be executed if the violation level is greater than the specified amount. cancel is just a cancel action, usually that means that an event is getting cancelled.
so to break down "log:flyshort:10:5:f cancel vl>150 log:flyshort:3:5:if cancel vl>400 log:flylong:3:5:cif cancel":
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Posted Aug 27, 2012<<reply 909272>>
I see... so using the same excample.
log:flyshort:3:5:f cancel vl>100 log:flyshort:0:5:if cancel vl>400 log:flylong:0:5:cif cancel
I'm having issues, I see basically three to four different actions, I'll break them up here, where does one start? one end?
log:flyshort:3:5:f
cancel vl>100
log:flyshort:0:5:if
cancel vl>400
log:flylong:0:5:cif cancel
Am I missing something?
I think this will do what I want it to do...
log:flyshort:10:5:f cancel vl>150 log:flyshort:3:5:if cancel vl>400 log:flylong:3:5:cif cancel