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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 22, 2012Is there some documentation for the new chat settings setup yet?
Also are there some default comfigs setup yet that are for example "light" "medium" "strict"?
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Posted Sep 22, 2012i THINK the data expiration is causing tps drops after a while, after I activated it, my server drops to < 7 tps after 56 hours, without it runs fine :) must be nothing, dont had much time to test it yet.
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Posted Sep 22, 2012@asofold
No, all the time with that build
Also tested other builds..
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Posted Sep 22, 2012I can't download dev builds... Site is down or something
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Posted Sep 22, 2012@zwirc
Does that happen under certain circumstances (everybody, lag, landing on vines/ladder, ...)?
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Posted Sep 22, 2012@asofold
It just suddenly appeared.
Using latest bukkit 1.3.2 and : NoCheatPlus 3.7.2-beta-b96
http://gyazo.com/733933017dee7e372fdc7593cdda4721
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Posted Sep 22, 2012@zwirc
Please make a ticket and give more details, like exact version string of your CB version and of NoCheatPlus. Also what tps does your server run on , if you use CompatNoCheatPlus also that version. Other plugins might interfere too (cncp + Spout might give other conflicts though, at present).
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Posted Sep 22, 2012Cant use this any more for 1.3 :S
Spamming my chat, everyone got this SurvivalFly tried to move from xxxx to xxxx over 0 blocks vl 13232113
Turned off the cancel function, removed config to let it regenerate etc, but still the same...
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Posted Sep 22, 2012@zSwayz
Captcha should work fine.
You need one thing to have: set the active flag in the captcha section to true in the configuration.
And your players must not have a bypass permsision (nocheatplus.checks.chat.nopwnage nor nocheatplus.checks.chat.nopwnage.captcha).
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Posted Sep 22, 2012<<reply 967306>>
The captcha does not work at all lol xD
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Posted Sep 22, 2012@Folas1337
The server had a crash sorry, its back up now.
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Posted Sep 22, 2012Dafuq's up with the jenkins again? Down once more? :( I was so happy it's up again :D Or did the domain change again?
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Posted Sep 22, 2012How would I make NoCheatPlus automaticly ban a player after so many violations? Ex: Player has 25 violations for flying = Instaban
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Posted Sep 22, 2012@zSwayz
You should not add any permissions to them if you want them to be checked ! The nocheatplus.checks... permissions all let the players bypass the checks. Just set "active: true" in the captcha section.
The chat configuration will get adapted more or less soon to be more simple.
@xXSshadowXx
No, the nopwnage section works by itself, it once had been based on the nopwnage plugin, but NoCheatPlus will not look up any proxy servers for instance.
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Posted Sep 21, 2012Is it required to have NoPwnage installed to use that subsection? It appears to be outdated but I wanted to be sure. Seems a few spammers have gotten through that should not have been able to.
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Posted Sep 21, 2012@asofold
Edit: for some reason they only get a warning, should i be adding nocheatplus.checks.chat.globalchat to their permissions as well?
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Posted Sep 21, 2012@zSwayz
Search for "catpcha" in the configuration, it is an extra section in the checks.chat.nopwnage section.
Set active to true for the captcha section.
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Posted Sep 21, 2012I can't seem to find anywhere in the config for the captcha, i have been getting a lot of spammers, and would like to avoid having the chat filled will garbage while i try and ban someone with a name i can hardly even read :/
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Posted Sep 21, 2012@mds818
Build 106 addresses this, you can ignore creative mode AND allowFlight setting individually. Probably creative is turned off on world change, but the allowFlight setting might persist for what ever reason (that is my suspicion) in that case setting creativefly.ignoreallowflight to false should do the trick. This might interfere with some flying solution though if those use the allowFlight setting (without creative mode).
So if it is an option to ignore the allowflight setting you can use try this build.
Also if you have one world in which allowFlight should not be ignored you can use a world-config file to set those settings for that world.
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Posted Sep 21, 2012@mds818
That sems to be a problem with Essentials / gamemode and world changing.
I could add flags for preventing players in creative mode or having the internal allowFlight setting (creative flying) from flying unless they have permission.
That might fix wherever that comes from (i intended to add that anyway).