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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 14, 2012@asofold
Donated again, for the performance update ;) Hope you can get it to work nicely! If you finish it I will donate again :)
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Posted May 14, 2012@Tobseb
Except for the logging (i.e. file IO) i don't see how multi-threading could make NoCheat faster.
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Posted May 13, 2012@Malvagio87
It will be, since NoCheatPlus now has an API. Many plugins will be compatible with NoCheatPlus now.
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Posted May 13, 2012Still getting this spammed in the console :( http://pastebin.com/m4jc1Eaf
It's read bottom to top since im using multicraft
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Posted May 13, 2012@waremanu
What even works, besides the client side color lines like tracers radar etc?
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Posted May 13, 2012@Xerati
Yes. He was able to fly from ground level to as high as he wanted. It was very glitchy and rather slow, but he still was able to do it.
@NeatMonster
Please see my comment about "purepvp" hack mod allowing you to "bypass" fly checks. If you already read it, then ignore this message. Thanks.
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Posted May 13, 2012@NeatMonster
Nice job man :) Looking forward to the performance upgrade and the NoPwnage fix with MCBans :)
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Posted May 13, 2012This may be a tall order but if you could integrate nocheatplus to somehow work with MCMMO that would be amazing.
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Posted May 13, 2012@waremanu
Lol, no it isnt, I tested NoCheat+ with nodus, nodus was not really working anymore.
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Posted May 13, 2012This plugin is powned by Nodus client..
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Posted May 13, 2012Just a quick reply to tell you that I've read all your messages. I am working on a new version at the moment so I'll reply to all the messages when this new version will be released.
Edit: My TODO.
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Posted May 12, 2012@Xerati
Really really really NICE Idea!!! Please do that!!!
On really big Servers like mine one you will really save ressoures with a thread more!!!
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Posted May 12, 2012Nocheatplus kills players that try to jump high into water and tells admins they were nofalling How do i stop this?
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Posted May 12, 2012can you build in a violation level in seconds instead of packages?
i want the peeps in my server to be able to fly for ±10 seconds before getting kicked/canceled.
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Posted May 12, 2012Also, based on what I can tell from my own server, I'm going to assume this runs in the same thread as the main craftbukkit 'stuff'. Is there any way to push NoCheatPlus into it's own thread? That would make any multicore server run exponentially faster...
Could even make it optional!
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Posted May 12, 2012@MutinyCraft
He went from the ground and flew up or was he hovering at that height?
And lol@the "no i'm not an idiot" shpeel. I know that feeling.
Also, I'll test the client on my server
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Posted May 12, 2012Client named "purepvp" that can be found on HackForums will bypass the NoCheatPlus fly check. http://i.imgur.com/KHauQ.png Screenshot of a regular player on my server flying. No, I do not give anyone permissions nodes to bypass the fly checks. Yes, I have checked my config and fly check is enabled and it is suppose to kick player with a VL over 50. Yes, I checked to make sure that I did not give them a permissions node to bypass it. Yes, NoCheatPlus stops all other flying clients that I have seen. No, I am not an idiot and he is really flying 30+ blocks and higher.
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Posted May 12, 2012@rfsantos1996
Nodus cannot be 'disabled' outright, because it's not a server friendly client (i.e. there's no option server side to tell the client to not allow cheats). It's a malicious type of client.
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Posted May 12, 2012Can you disable Nodus Client? (http://www.h4ckgame.com/2012/04/1-2-5-updated-nodus-client-8-3-custom-commandskeybinds-irc-waypoints/)
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Posted May 12, 2012Could you please make this work better with MCBans? When NoPwnage bans them, the spam thread continues for a few more seconds. I am aware that MCBans commands have a delay before they take effect, but this would fix the problem if you could cancel it for a longer time, because the old antispam did cancel it completely, and I had no problems at all.
Now I am having to add a mute command and it makes disputes very hard because the mute is still activated when players join, and CommandBook does not allow mutes to be disabled while the player is offline...
Thank you for looking into this :)