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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 May 7, 2013@MyPictures
Ok, thanks very much. With the "flying kick on boat" I think it doesn't occurs any more :S.
What I have since some time ago is a crash almost every day.
It occours always on a LoginEvent. I'm lost with this crash so I'm asking all plugins that manage LoginEvents because to test it I need a server on really much time but I only have a production one so I can't remove plugins to try.
Thanks for your attention.
Crash: Is this crash yours?: http://issues.citizensnpcs.com/secure/attachment/11300/crash-2013-05-02_17.18.09-server.txt (Is a citizens link because I send it to them too)
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Posted May 7, 2013@Bf3Chilled
Do you need it that much? Would probably be easier to just give them permissions to bypass checks. Or if you run a multi world then use world based config files for NC+.
@NemesisMate
The Passable check doesn't work with doors yet so @asofold added those to the ignore list to avoid false positives (player being stuck in a door or so). You can remove them and check it out but I recommend to let it disabled for now. To prevent no clipping through doors we need something more advanced...
@server075
nodes? What's that? NC+ allows a tiny bit of speed hacking to prevent your players from throwing false positives while running. For AutoAim read here: http://dev.bukkit.org/server-mods/nocheatplus/tickets/51-forcefield-aimbot-reach/
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Posted May 7, 2013R: NoCheatPlus 3.9.1-RC2-b510 for 1.5.2
Fails to prevent fast walk, from nodes.
Fails to prevent auto aim, from nodes.
will this be fixed ??
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Posted May 7, 2013Why is this like that?:
It means with a passable cheat mod users can pass through doors? or only through opened doors?.
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Posted May 6, 2013please add this command: /nocheatplus enable/disable
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Posted May 6, 2013@jack588
Does that happen to all players (non op, non admin)?
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Posted May 6, 2013@asofold
still same, my player is laggy and the log is "xxx failed speed: interacts too fast. VL 1001 - 2000"
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Posted May 6, 2013@jack588
Use CompatNoCheatPlus with mcMMO and NCP.
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Posted May 5, 2013my player is llagggy and when he's using giga drill breaker (mcmmo) he'll kicked.. how to fix this?
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Posted May 5, 2013@MyPictures
thanks
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Posted May 5, 2013@hallowhead1
If new config settings have been added to the new version then NC+ should automaticly generate those but if the new version changes a config (like the new one changes the login check ones) then you need to update it manually. NC+ will give you a notification ingame if the config file needs to be updated.
@asofold
x.X
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Posted May 5, 2013@hallowhead1
The config does not get automatically changed (except for adding new entries).
The up-to-date check just checks the comment line at the top of the configuration, so it is not very "smart".
Question is when your config was last time generated and which check parameters got changed, recently there have not been critical changes, so regenerating the config would not be extremely important, unless i am mistaken.
If you want to get latest settings you would have to generate a new one and compare. We might later add something to show actual changes with a command or so.
Config for build 510: http://dev.bukkit.org/paste/7713/
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Posted May 5, 2013does the config automatically update itself with new releases? or do i have to generate a new one?
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Posted May 5, 2013@shadowmoney
NoCheatPlus kicks only kicks players to prevent them spamming your server with hacks (better performance). You can remove those by removing the cmd:kick action in the actions config of the affected check.
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Posted May 5, 2013How can i make so Nocheatplus wont kick when they are using hack but they cant use hack. Please tell me!
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Posted May 4, 2013@asofold
Fair enough (Not using NPCs atm) but did want to report it.
And my player-base is eager to have the velocity stuff functioning again :3
Thanks for the help!
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Posted May 4, 2013@LordKainzo
That looks like a bug on server side, could be an inventory managing or npc plugin causing this too.
Concerning velocity, we will soon give it a try.
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Posted May 4, 2013@asofold
Any love for the velocity/skill jump stuff? eager to test something!
http://pastie.org/private/s9eodngbjdn5horxylnqq
^ also saw that randomly.
(1.5.1)
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Posted May 3, 2013@Zbob750
We should recommend to update to 1.5.2 anyway. Plugins should be able to update quickly this time.
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Posted May 3, 2013@MyPictures
I did update the server. If you still use the 1.5.1 build for some reason the anvil bug will still exist. I have tested this. Others have confirmed it. Bukkit Team Member Amaranth was able to duplicate my results without issue.
That said, I'm not a developer. I don't know why it fixed it but it did. Just letting you and others know about it so you can post a notice and others can fix it.