NoCheatPlus

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NoCheatPlus

Detect and fight the exploitation of various flaws/bugs in Minecraft!

Features Permissions Commands Configuration Jenkins

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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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.

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, Citizens, MagicSpells 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.

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

Support

Documentation Resources

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).

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  • Avatar of asofold asofold Feb 09, 2014 at 20:16 UTC - 0 likes

    @Wizel603: Go

    Similar things have been proposed before, consider upvoting and adding to Ticket 376. Since that would be a quite simple to integrate variation of regex, it might actually happen.

    Last edited Feb 09, 2014 by asofold

    BFAK:asofold,90573112,4305cd44b773216e4e4b4865b3831dcc3c507c15087fb5cfeebd9392050724fc

    NoCheatPlus
    Latest beta release (1.8.x, this site) 3.13.0-BETA-sMD5NET-b878
    (Development builds, 1.8.x: Jenkins)

  • Avatar of Wizel603 Wizel603 Feb 08, 2014 at 21:38 UTC - 0 likes

    @asofold: Go

    Only about half a dozen people were connected at the times. I wonder if there was some high disk I/O latency at those moments which caused ncp timings to be thrown off when it went to rewrite its config. No, I don't announce any reloads. :)

    I have an unrelated request for a feature to add to the Text Frequency section. A regex check against a configurable string list, which if there's a match will add a configurable weight.

  • Avatar of MyPictures MyPictures Feb 08, 2014 at 01:30 UTC - 0 likes

    @asofold: Go

    I assume me ment the velocity switch under the moving checks?

    BFAK:MyPictures,68804,4095b7e13e1842a5c6922a5b3a9094d1f7dbb5f4e7e36f133280ab58fa2882b0

  • Avatar of asofold asofold Feb 07, 2014 at 19:24 UTC - 0 likes

    @timgeel: Go

    @MyPictures: Go

    What is "strict check" or "disabled strict check"?

  • Avatar of MyPictures MyPictures Feb 07, 2014 at 18:11 UTC - 0 likes

    @timgeel: Go

    Yes could be. Set strict to true again and try to test it out.

  • Avatar of MyPictures MyPictures Feb 06, 2014 at 23:27 UTC - 0 likes

    @SuperPyroManiac: Go

    Version of CraftBukkit and NoCheatPlus (please update to dev since it includes a fix for end portalframes and hover check)? What is that player actually doing? You can remove the kick action of SurvivalFly in the config.yml if you don't want them being kicked for having high VLs.

  • Avatar of SuperPyroManiac SuperPyroManiac Feb 06, 2014 at 23:14 UTC - 0 likes

    For the past few months (With updates) my users sometimes just keep getting kicked by nocheat for "Flying or related" until I give them permissions to bypass that check. The second I remove the perm, the issue comes back.

    Last edited Feb 06, 2014 by SuperPyroManiac

    http://i1196.photobucket.com/albums/aa406/awesome130/Untitled_zps932188e4.png

  • Avatar of MyPictures MyPictures Feb 06, 2014 at 17:59 UTC - 0 likes

    @SydMontague: Go

    NoCheatPlus should support walkspeed modifications by bukkitAPI. Do you use that or do you really do it over NMS? I recommend to create a ticket and explain it better there. We can also better keep track of your issue over a ticket then over those comments.

    @timgeel: Go

    Can we have more information's? What does NC+ show with /ncp info <Player>? Do you see any moved too quickly logs in your console with that players name? I recommend to always create tickets to explain issues.

  • Avatar of SydMontague SydMontague Feb 06, 2014 at 15:17 UTC - 0 likes

    The survivalfly check does bug sometimes on my server with dynamic walkspeed values.

    In my case the players have a reduced walkspeed (0.16 and 0.18) and get "caught" by NCP from time to time, especially if they're jumping.

    Would be cool if your checks would work better with the MC internal walkspeed values. :)

  • Avatar of asofold asofold Feb 06, 2014 at 10:13 UTC - 0 likes

    @Wizel603: Go

    Hard to tell, it is a big server? I would expect a violation but not going up till kick level. You don't happen to announce "ncp reload", do you?

    @dotapurex1: Go

    You deactivated morepackets - don't do that :). It's peculiar that it is possible to deactivate it at all, with creativefly or survivalfly activated.

Facts

Date created
Apr 02, 2012
Categories
Last update
Jan 31, 2016
Development stage
Release
License
GNU General Public License version 3 (GPLv3)
Curse link
NoCheatPlus
Reverse relationships
4
Downloads
1,437,475
Recent files

Authors

Relationships

Optional dependency
ProtocolLib