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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 Sep 1, 2012@asofold
The latest build have the support for /speed from Essentials Pre release (http://dev.bukkit.org/server-mods/essentials/files/158-essentials-pre2-9-4-1/)?
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Posted Sep 1, 2012@shurfire
The developement builds are already pretty much usable: http://www.nocheatplus.org:8080/job/NoCheatPlus/
We will go for a beta release for 1.3.2 within the following days (not sure we will explicitly release one for 1.3.1).
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Posted Sep 1, 2012will there be a 1.3.1 buld soon?
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Posted Sep 1, 2012@ARNGCollins
Maybe :) - it strongly depends on what smart moving is actually doing. You can allow faster walking and sneaking speeds, concerning climbing walls it might get difficult, because you probably would not want people to fly in an arbitrary manner.
It is thinkable, to provide a smart-moving hook with the plugin CompatNoCheatPlus for say, climbing walls. It would disable the alerts if the players are likely to be climbing a wall actually. But i need information about what checks actually alert for it, for i can't possibly test every mod myself.
Are you actually using NCP already, or are you considering to use it ?
(One could consider to make a config that just alerts but does not cancel any player actions for most moving checks, so it becomes testable, if set to log to file we would have a nice collection of data for smar t moving.)
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Posted Sep 1, 2012Is there a way i can enable smart moving and keep the rest disabled? This plugin is really useful but i run a smart moving server.
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Posted Sep 1, 2012@domingo15
Ok you can try NCP build 56 for this, if you have the ban actions removed from the nopwnage actions, this might blend in well with the globalchat check now (if you already the latest builds before build 56, remove the frequency factor in the globalchat section, it should 0.9).
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Posted Sep 1, 2012@MyPictures
@domingo15
It has extra VL + actions for the captcha part and another supplementary frequency check, which aims at the slower spamming.
The nopwnage check still might have issues with the latest builds as well, though. But you can configure it more flexibly.
You can't yet reset a players VL from outside, but consider it a bug - the old nopwnage had been designed to ban players rightaway (or do captcha instead), but we changed it to use actions, yet the resetting of the VL is still an open question.
I could imagine we just add actions like setvl=0 setvl/2.0 and also a cooldown for resetting the violation level - i just have an idea which i will discuss with NeatMonster, or just push.
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Posted Sep 1, 2012@domingo15
Use the latest NC+ build, it contains VL for nopwnage/chat,
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Posted Sep 1, 2012how can you reset the violations of a player because one of my player spammed and now gets kick everytime he talks, is there a way to reset there violations?
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Posted Sep 1, 2012@Motocross635
You need to use the both jars.
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Posted Sep 1, 2012@asofold
So it is a yes? I'll have both jars?
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Posted Sep 1, 2012@Motocross635
cncp is an addition to NoCheatPlus to provide some compatibility hooks, if needed.
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Posted Sep 1, 2012If I get combatnocheatplus am I supposed to use it with or without the normal nocheatplus?
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Posted Sep 1, 2012OK, thx. Do you know which ones I can't block (yet, I hope)?
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Posted Sep 1, 2012@DonBanettone
Nearly all important ones.
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Posted Sep 1, 2012How many of Nodus's features can I block with this?
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Posted Aug 31, 2012@SuperPyroManiac
It is an experimental feature, it might work, but it can also have side effects with other plugins like Orebfuscator, DisguiseCraft which happen with some people, and with some not.
An alternative might be a plugin that sets the allowed flying and walking speed of the players. Essentials has a /speed command, CompatNoCheatPlus has a set-speed hook and there may be other plugins that can do it. These would probably not help against getting pulled down but against the setting back. Another thing might be to update to CB 2357 at least, which might be needed for world changes/teleportation with creative flying and similar.
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Posted Aug 31, 2012Alright the new bukkit "Anticheat" that is causing fly mods to go crazy,and non smooth flying is really bothering me. Although I noticed this: nomovedtooquickly: enabled: false useproxy: false
setting those to true will allow me to fly without flaw using a mod correct?
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Posted Aug 31, 2012@Jordan0510
NCP build number ?
We will attempt to improve nopwnage by a good bit in the near future.
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Posted Aug 31, 2012@meshein
You want to limit the flying speed for players that are allowed to fly?