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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 Aug 18, 2012@Sx7xN
I cant agree on that, zombes fly mod gets blocked with and without NC+. As @coomdoom said, its a issue of craftbukkit itself.
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Posted Aug 18, 2012@Sx7xN
The issue with Flying is a problem with CraftBukkit 1.3.1-R1. It will be sorted in the next release.
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Posted Aug 17, 2012What is the issue with Zombes fly mod?
I can't seem to fly over water without it rubberbanding me back.
I'd say its an issue with Zombes, but it works fine when NCP is disabled.
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Posted Aug 17, 2012@Jobsti2 Made a ticket for it ;) http://dev.bukkit.org/server-mods/nocheatplus/tickets/152-path-setting-for-the-logfile/
@aroeira
Not tested but it may be buggy with tekkit.
@leslieliang
Hmm strange, does that also happen if you have OP? If yes then please make a ticket.
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Posted Aug 17, 2012@asofold
Yeah I also dont use /reload at my main server, but Im working on a new server with my new plugin. This plugin is nearly finished, but Im still adding/fixing some things. Cause I want to test the new features/fixes I use the /reload command. Thats alot faster then stopping and starting. And because this server is a warserver, some guys are fighting with me. And to prevent hacks I wanted to use NoCheat. No Ive deleted it, until the server is finished. Then I will install it again. Also the server dont has many plugins. Only this plugins: NeubyWar, NeubyWarStuff, NeubyWarTutorial, xAuth, NCP, WorldEdit, WorldGuard, PermissionsBukkit. Its not severe, but Ive just wanted to help you, that you can fix that bug :D
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Posted Aug 17, 2012How can I tell if this is working or not? I installed it, gave myself nocheatplus.* om PermissionsEX, but whenever I type in /ncp, all it says is /ncp reload. When I do type in /ncp reload, it says the same thing.
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Posted Aug 17, 2012tekkit compatible ?
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Posted Aug 17, 2012Request for the actual (Dev) builds:
I want the logfile-path back in config!
I want all my logs in root/logs ;-)
Thanks.
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Posted Aug 17, 2012@bentech1
Right, take a look at the hook packages of NoCheatPlus and CompatNoCheatPlus:
https://github.com/NeatMonster/NoCheatPlus/tree/master/src/fr/neatmonster/nocheatplus/hooks
https://github.com/asofold/CompatNoCheatPlus/tree/master/CompatNoCheatPlus/src/me/asofold/bpl/cncp/hooks
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Posted Aug 17, 2012@MyPictures
Yeah, I do not think nocheatplus is really eating much, as performance on it is just amazing now. The only lag I get is from Craftbukkit, and it doesn't matter if i have nocheatplus in or out. I created a test server, with 0 plugins, and still had lag issues.
@deleted_8156133
Here's something I did when I was having issues on 1.2.5 nocheatplus. What you can do to help increase some performance, is try turning off all logging in your config.yml. You can find this at the top of the config, and it show say a bunch of logging information that you can set to "false". If this method does not work, then its got to be your craftbukkit :/ Try using craftbukkit devs, they might be much better then the latest RB.
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Posted Aug 17, 2012You've broken your own api
https://gist.github.com/2638309
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Posted Aug 16, 2012@MyPictures
My server has 16GB of ram and is a E3-1240. What do you use to test? Mine hosts my forum in my sig as well though.
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Posted Aug 16, 2012@MasterGabeMOD
Yeah I hear rumors that craftbukkit was not working well now.
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Posted Aug 16, 2012@Intangir
Well maybe you should "unprotected" your /pl and /help from NC+ and use the craftbukkit permissions:
http://wiki.bukkit.org/CraftBukkit_commands
@deleted_8156133
Yea guess that's the best for now.
@deleted_8156133
Much checks needs to be optimized still and some will change massively. On the nocheatplus.org server we cant experience lag but we don't know how it runs on other servers that have weaker hardware to handle NC+. NC+ will of course eat some resources for checking/calculations and so on, so do expect that your server will be a bit heavier with NC+ then without. @NeatMonster is doing his best to make NC+ as fast as possible ;)
Performance improvements from NC+ 3.6.1 and 3.7 is still massive.
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Posted Aug 16, 2012@deleted_8156133
Nope, performance is way better.
If you're lagging, it's probably craftbukkit.
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Posted Aug 16, 2012Is NoCheatPlus lagging servers now? I heard a rumor it was...
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Posted Aug 16, 2012@MyPictures
I was using the latest build at the time. I don't think they added it yet. I'll add the MCBans AntiSpam until this has been fixed :)
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Posted Aug 16, 2012previously by default /plugins didnt work for everyone but /help did
now neither do
you said in a reply that you can unprotect BOTH but i only want to unprotect HELP
i guess ill leave them both unprotected but id prefer to be able to hide the plugins command, since many of them have no help command and id rather they not be seen, but need help to remain usable
this is basically forcing me to leave them both unprotected since its apparently a package deal now.. help is a necessity, its also way up on my preferences to keep plugins unlisted....
this is really bad timing ontop of 1.3 with all of the other new plugins my users are trying to use now...
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Posted Aug 16, 2012@LEOcab
Though in fact NeatMonster is using reload a lot for testing on the test server, but he has few plugins installed. It is still thinkable that the overriding of NetServerHandlers for players can cause issues, especially if other plugins do similar things.
I usually would not encourage to use reload becasue all the class loader mechanisms and keeping references and threading questions, i experienced strange crasheds that would not happen with restarting and one never knows if plugins can handle restarts.
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Posted Aug 16, 2012@Blackixx Restarting the server with /reload is a BAD idea. Most plugins don't handle this properly. You should always save-all, stop, and start it up again.