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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 Apr 18, 2012Yes. "/ openinv" stopped working.
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Posted Apr 18, 2012@NeatMonster Command bug confirmed!
Can't use /openinv as owner anymore when updating to latest NoCheat+
Can you fix this?
Its wierd that I am owner with " * " permissions and can't use /openinv and others can.
Error message:
"This command can be executed from the console!"
Thanks
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Posted Apr 18, 2012@ArticHood that has nothing to do with NoCheat+! Why?: NoCheat+ doesn't have any xray protection or blocker. Also NoCheat+ doesn't change/affect any blocks on your map. like @KJanar said :)
You have towny on your server? If so then check the "regen block" option in it.
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Posted Apr 18, 2012Hey, just noticed a problem with the new opbyconsoleonly setting. It seems to block any command that begins with op, so for example it blocks /openinv
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Posted Apr 18, 2012Don't think NoCheat+ has any block modification code.
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Posted Apr 18, 2012I think my map is deteriorating because of your plugin.. I guess it's the anti-xray that leaves a mark on ones map.
Anyways, this is happening: http://img713.imageshack.us/img713/9751/20120418124355.png
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Posted Apr 17, 2012@Djrowling NoCheat+ shouldn't conflict with plugins that are changing speed/block break.. etc. But idk 100%, better if you give it a test :)
@Spiritwo13 hmm then @NeatMonster should have a look at this.
But the dev from NoZombe says:
"Better use NoCheat+
It blocks many more cheat mods than this."
http://dev.bukkit.org/server-mods/nozombe/
@NeatMonster good job with the update :), I think NoCheat+ is the best successor for NoCheat.
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Posted Apr 17, 2012It's the critical hit. Nodus and a few others make every hit act as a critical even if you aren't jumping. It is a big problem and something I'm not sure how to combat right now.
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Posted Apr 17, 2012Nice update! Thanks again.
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Posted Apr 17, 2012Nice work man. So many rapid fire updates fixing everything :D
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Posted Apr 17, 2012@MyPictures
Yes I'm talking about zombes xray mod when I refer to cheat mod. This plugin should have a feature that as soon as you push the button to turn on the xray it says "Zombes Cheat mod is not allowed on this server", just as the plugin NoZombe does.
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Posted Apr 17, 2012Does nocheatplus have in-game commands like reload and others? Because if so I can't find them on this page.
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Posted Apr 17, 2012This plugin looks amazing but does it support McMMO yet? Thanks for being so active.
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Posted Apr 17, 2012@Pr07o7yp3 If it's a free client, I'll do some testings with it tomorrow. If what you said is true, I'll have to improve my checks. Anyways, thanks for your comment.
@HighlifeTTU I don't if you're talking about the critical hit or the knockback, but now knockbacks are fixed in the latest version. If you're talking about the real critical, I need to find a way to detect them when they're done to a player.
New version released: a new anti-knockbacks check has been added and an option (enabled by default) to only allow the commands /op and /deop to be executed by the console (to prevent a little bit the exploitation of the broken authentication protocol of Minecraft).
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Posted Apr 17, 2012I think my biggest issue at the moment is the always critical hit hack. I simply can't detect it. I think I know when it is happening, but I can never be sure. Any chance you'll look into a way to detect when I player gets a critical hit when they shouldn't?
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Posted Apr 17, 2012NeatMonster, please download Nyan Hack. You will see how many features of the hack it works perfectly.
Also, fastplace and fastbreak still works.
So, please download this client and check it alone.
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Posted Apr 17, 2012@deleted_7554077 Sincerely, I don't know.
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Posted Apr 17, 2012Hmm wierd. Can it be the CB 2155 Development build then?
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Posted Apr 17, 2012@deleted_7554077 NoCheat+ doesn't do anything to prevent items from being picked up.
In facts, it doesn't even register the PlayerPickupItem event.
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Posted Apr 17, 2012Is it possible that NoCheat+ is preventing items from being picked up?
We are getting lot of complaints that when they die or throw an item down they can't pick it up.
Any suggestions? I was on CB 2155 Dev and now went back to 2149 RB to see if CB is the problem.