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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 15, 2014 at 12:44 UTC - 0 likes

    @sacha220899: Go

    We do try to provide an optimum by default, the next release will contain some configuration changes, but there is no optimum that covers all different types of servers.

    If there was a much better "optimal config" that fits all, we would not dare to have a "default config" that is not optimal.

    What i can think of is to link configurations of live servers (or parts of those), optimized for certain contexts. That would need server owners sending in their configurations, though.

    Last edited Feb 15, 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 sacha220899 sacha220899 Feb 15, 2014 at 12:20 UTC - 0 likes

    Can you please set an optimal config? So we haven't to set up it.

  • Avatar of asofold asofold Feb 14, 2014 at 22:54 UTC - 0 likes

    @ghosttractor: Go

    I can't suggest much of use right now. We will have to reproduce this somehow and see if we can fix it or not.

    If the other plugin allows executing commands on activation or deactivation of the spell, it would allow pinpointing exemption. Maybe it is possible to add something to cncp to do so, but i would need to have a closer look.

  • Avatar of ghosttractor ghosttractor Feb 14, 2014 at 09:50 UTC - 0 likes

    @asofold: Go

    so what do i do??

  • Avatar of asofold asofold Feb 13, 2014 at 19:38 UTC - 0 likes

    @Wizel603: Go

    Thanks that's interesting to know.

    @ghosttractor: Go

    I assume that this will be issues with creativefly + velocity mainly. Nothing we can quickly mend.

    @minejaxmc: Go

    We can not set such low values, because players are able to click much faster. You could set it to 3 per second or similar in the configuration.

    Killaura is not detected as "killaura" but it it limited in what it can do. Certainly not perfect but somewhat effective. The fighting checks are in focus of development at present - first we will reduce false positives for certain situations, then we will try to harden it against cheating further.

  • Avatar of ghosttractor ghosttractor Feb 13, 2014 at 19:08 UTC - 0 likes

    Y U NO ANSWER??

    Last edited Feb 13, 2014 by ghosttractor
  • Avatar of minejaxmc minejaxmc Feb 13, 2014 at 16:30 UTC - 0 likes

    Alright, I tested out KillAura on a NoCheatPlus server, and it didn't detect it. You shouldn't be able to register more than 3 hits per second. I think that will stop KillAura on NCP servers. Please take this in to mind, or at-least find a way to stop KillAura.

  • Avatar of ghosttractor ghosttractor Feb 12, 2014 at 07:47 UTC - 0 likes

    @asofold: Go

    I use magic plugin:http://dev.bukkit.org/bukkit-plugins/magic/

    Which has a spells that makes you fly/fling/jump VERY HIGH

    And it says:

    14.02.11 23:30:53 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 139.
    14.02.11 23:30:58 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 394.
    14.02.11 23:30:59 [INFO] Clerk9 failed CreativeFly: tried to move from 1039.43, 82.52, -49.75 to 1039.43, 84.91, -49.75 over a distance of 2.39 block(s). VL 439.
    14.02.11 23:31:04 [INFO] Clerk9 failed CreativeFly: tried to move from 1037.39, 82.52, -49.94 to 1037.21, 84.91, -49.97 over a distance of 2.40 block(s). VL 462.
    14.02.11 23:31:06 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 349.
    14.02.11 23:31:11 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 257.
    14.02.11 23:31:13 [INFO] Clerk9 failed CreativeFly: tried to move from 1045.42, 82.52, -52.63 to 1045.42, 84.91, -52.63 over a distance of 2.39 block(s). VL 438.
    14.02.11 23:31:28 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 278.
    14.02.11 23:42:04 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 139.
    14.02.11 23:42:07 [INFO] Clerk9 failed CreativeFly: tried to move from 1029.50, 81.52, -62.63 to 1029.50, 83.91, -62.63 over a distance of 2.39 block(s). VL 426.
    14.02.11 23:42:12 [INFO] Clerk9 failed CreativeFly: tried to move from 1029.50, 81.52, -62.63 to 1029.50, 83.91, -62.63 over a distance of 2.39 block(s). VL 563.
    14.02.11 23:43:51 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 139.
    14.02.11 23:43:55 [INFO] Clerk9 failed CreativeFly: tried to move from 1031.82, 81.52, -59.38 to 1031.90, 83.91, -59.29 over a distance of 2.39 block(s). VL 431.
    14.02.11 23:43:57 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 353.
    14.02.11 23:45:40 [INFO] Clerk9 failed CreativeFly: tried to move unexpectedly. VL 139.
    14.02.11 23:47:16 [INFO] Clerk9 failed SurvivalFly: tried to move unexpectedly. VL 183.
    14.02.11 23:47:17 [INFO] Clerk9 failed SurvivalFly: tried to move from 1041.06, 79.00, -60.09 to 1041.06, 81.52, -60.09 over a distance of 2.52 block(s). VL 417.
    14.02.11 23:47:31 [INFO] Clerk9 failed SurvivalFly: tried to move unexpectedly. VL 98.
    14.02.11 23:47:33 [INFO] Clerk9 failed SurvivalFly: tried to move unexpectedly. VL 131.

  • Avatar of Wizel603 Wizel603 Feb 12, 2014 at 03:29 UTC - 0 likes

    Seeing an occasional "Block breaking out of sync!" in latest build. Using bukkit build 3019. Not doing any reloads at the times either, I should add.

    EDIT: might have been someone farming and overloading the server at the time. disregard.

    Last edited Feb 12, 2014 by Wizel603
  • Avatar of asofold asofold Feb 11, 2014 at 20:47 UTC - 0 likes

    @ghosttractor: Go

    First let's check out what "this" is in particular. What plugin are you using for flying?

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
1,452,514
Recent files

Authors

Relationships

Optional dependency
ProtocolLib