NoCheatPlus

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NoCheatPlus

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

Features Permissions Commands Configuration Jenkins

NOW! With Minecraft 1.10 support! (on Jenkins)

Quick overview: NCP by version of Minecraft
(Links may lead to downloads not approved by BukkitDev staff, use at your own risk.)
GitHub Issue for 1.10 progress (overview)

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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 nsptg95 nsptg95 Oct 18, 2015 at 13:29 UTC - 0 likes

    @asofold: Go

    version 1.7.2 - 1.7.5

    ZBDH1517c7fcc3fa2fbb5b1c7ed28e571e64 MeuServer

  • Avatar of asofold asofold Oct 18, 2015 at 00:30 UTC - 0 likes

    @nsptg95: Go

    What was your server /version?

    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 nsptg95 nsptg95 Oct 17, 2015 at 14:14 UTC - 0 likes

    @asofold: Go

    humm thanks, i go send my ncp config: http://pastebin.com/JNx8WjZa

    maybe how you recomend i do?

    thanks :b

    Last edited Oct 17, 2015 by nsptg95
  • Avatar of asofold asofold Oct 16, 2015 at 16:45 UTC - 0 likes

    @nsptg95: Go

    I don't see the problem yet :).

    1. This is 40% of plugin load, not server load. WorldGuard is "10%" off that value. 2. What is your server version? 3.11.1 is quite a lot outdated. 3. You can reduce logging (turn off console logging, or ingame logging, depending on what you really need, file logging should be best to keep). 4. You might use CompatNoCheatPlus alongside with citizens, otherwise NPCs might create even more load.

    Permission checking seems to create a lot of load, perhaps we will add caching, in order to cut down the checking time (on one profiling go, we had moving checks have 50 % overhead due to permission checking (!)). The reason for taking a considerable lot of resources might be a) similar to WorldGuard checking a lot of things including all players moving (more than WorldGuard has to), and b) perhaps NCP is running in an inefficient mode/setup, e.g. NCP 3.11.1 with MC 1.8.x or all logging enabled on a bigger server.

    Essentially there is the question if your server has performance problems that way at all - NCP has been designed to take about 3% or max. 5% of total load in average, scaling with server performance - so absolute timing values or relative to the full server load would be more interesting.

  • Avatar of nsptg95 nsptg95 Oct 16, 2015 at 13:49 UTC - 0 likes

    Hello, i dont know why this but, no cheat plus use 40% of my server total,

    timings: https://goo.gl/zUyqa9

    my no cheat plus version is: 3.11.1

    have solution?

    sorry for my bad english and thanks for help

  • Avatar of asofold asofold Oct 15, 2015 at 22:55 UTC - 0 likes

    @Schneidertm: Go

    What do you mean with 'bypass'?

    Technically NCP just sets the "you don't have permission" message for the unknown command part.

    Only in the case that the command did not have any permissions set, NCP will set one. The root permission for all would be nocheatplus.filter.command , and for a specific command, say 'spawncreepers', you would have the lower case command name appended, like nocheatplus.filter.command.spawncreepers .

    Edit: Corrected permission for 'spawncreepers'.

    Last edited Oct 16, 2015 by asofold
  • Avatar of Schneidertm Schneidertm Oct 15, 2015 at 21:59 UTC - 0 likes

    Hey,

    could you please tell me the permissions node to bypass the hidden commands? (Config -> protection.plugins.hide.unknowncommand)

    Thanks a lot!

  • Avatar of asofold asofold Oct 15, 2015 at 10:38 UTC - 0 likes

    @Chris_GSPvP: Go

    What is the "newest" ? A development build?

    NCP doesn't do anything with bubbles. It may be a cross-plugin thing.

    Why are bubbles there in the first place? Have there been players with potion effects, do plugins add those? Do you have plugins adding (particle-) effects ?

    What else did you update (client, server, plugins)?

    Last edited Oct 15, 2015 by asofold
  • Avatar of Chris_GSPvP Chris_GSPvP Oct 15, 2015 at 07:16 UTC - 0 likes

    Since I updated to the newest NoCheatPlus I get this: http://prntscr.com/8rdmu1

  • Avatar of asofold asofold Oct 14, 2015 at 10:30 UTC - 0 likes

    @Bobcat00: Go

    You don't have any cheating involved i guess?

    Build 853 represents the old-style y-axis handling, just with having attempted to remove as many false positives as we could catch, before switching implementation fundamentally.

    Latest builds will change y-axis handling fundamentally, alas with other false positives to iron out. we will try to pull off a recommended release within the next 7-10 days, aiming at removing the most false positives in survivalfly (new builds), and adding a replacement for fight.speed using ProtocolLib. We still have issues in the queue so i'd not switch to "latest", unless you keep track of latest tickets (to not duplicate too much) and want to help speed up wrapping up things, at the risk of new / other false positives with survivalfly. Essentially we do have a couple of actual changes queued, so likely after 3,4 builds to follow, it'll get interesting to switch.

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
5
Downloads
1,533,416
Recent files

Authors

Relationships

Optional dependency
ProtocolLib