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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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).
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Posted Sep 21, 2014Does it support UUIDs yet?
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Posted Sep 20, 2014@KevinEssence
Currently yes (fixes for passable). I will upload it soon.
@Chris_GSPvP
Please make a ticket and/or describe more what the bow has to do with it? So far i understand someting with moving with a bow and getting set back. Is it... you pull the string of your bow and after releasing or firing, you can't move on normally, despite not pulling the string anymore? We also could use a glimpse at the output of the "ncp version" command...
Concerning fences: We don't enforce moving speed vs. eating.
@andrewcramer
Could you give more details on "knock somebody off something 3 times with knockback enchantment"? Specifically:
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Posted Sep 19, 2014Knockback with this plugin is sort of buggy. like you knock somebody off something 3 times with knockback enchantment and they keep teleporting back. very annoying for pvp servers. other than that this is a good plugin
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Posted Sep 19, 2014Bugs:
1.Theirs something wrong with the bow glitching like it always lags you back AND the push back glitch (When you're running or walking and suddenly you "lag" and can't move. You like move forward then go back to the block you were on until you rightclick or shift.). This has something to do with NoCheatPlus. However, I dont have this problem at other servers. Check out my server: glowstonepvp.com and my config: http://pastebin.com/kieeTPpf
2. Fences, if you right click them with a golden/god apple you can eat it while running.
Please help me out with these problems! I'am willing to pay 10$ to the person who fixed these problems.
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Posted Sep 18, 2014Is it recommended we use latest jenkins on our 1.8 spigot protocol servers?
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Posted Sep 14, 2014@iarepande
So "ncp kicklist" or "ncp denylist" shows their names ?If so, did you do ncp unkick PLAYERNAME" ?
What's your version of NCP? What does the serrver log show when they get kicked?
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Posted Sep 14, 2014@MyPictures
I got two people who got kicked today and they are on the kicklist and I have done literally every command that could get them off but they can't login.
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Posted Sep 13, 2014@MineCraftMyph
What are chat cooldowns? NC+ has a delay string and command which will delay the execution of a command.
Or did you mean command spam? Like stop players from spamming too much commands in a short time?
@Manic_Kaval
Several options:
- Make sure they have no notification permission for NC+
- Disable logging completely
- Or disable the checks you don't want to use (will allow them to cheat those of course)
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Posted Sep 12, 2014Members on my server are receiving messages from NCP concerning other members when they fail a movement or blockbreak. http://i.imgur.com/6YVa0u1.png How can I disable this?
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Posted Sep 11, 2014What part of the NCP configuration handles command cooldowns? Is the command cooldowns separate to the chat? If not how to I make the cooldowns separate?
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Posted Sep 8, 2014@Shinxs
Yes. There is an API which allows you to exempt checks on specific players: https://github.com/asofold/NCPDocs/blob/master/wiki/development/api.creole (Id recommend checking out CNCP for some nice examples). However you cant disable the entire plugin with that API (would not make sense at all anyways).
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Posted Sep 7, 2014Is there some sort of API so that I can disable it for my plugin? Or just a way to disable and enable it for a specific player?
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Posted Sep 5, 2014@Chris_GSPvP
Build 742 should be safe to use - release might be anytime, though things are slighltly at "watching things evolve", concerning current events around the Bukkit project and the CraftBukkit server (code).
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Posted Sep 5, 2014Can anyone tell me if build #742 is safe to use?
As secondly, when is the build releasing on bukkit?
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Posted Sep 4, 2014@Max633
That can't be generalized. The task has run one time and covered half a second. That is too much of course, but such can happen, e.g. on or file-io or a thread-switch, though the latter means that another thread took a long time.
You could reduce / deactivate file logging (at least for console) in NCP.
@chrisbruijnes
I will push a development build with a fix.
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Posted Sep 2, 2014Well, I never had this error I think untill I uploaded a spigot version while ago.
http://pastebin.com/B0byAeGX
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Posted Sep 2, 2014I problem timings paste
http://hpics.li/819cf94
thanks
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Posted Sep 2, 2014@chrisbruijnes
Ah sort of, though it's different than i thought - can you paste or send the whole protection section?
Did you try without the "ver" and "pl" aliases (shouldn't be the reason though)?
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Posted Sep 2, 2014http://pastebin.com/6BiRJZmi
Do you mean this?
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Posted Sep 2, 2014Error comes on startup.