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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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).
My whole community is freaking out because of this plugin. It keeps getting everyone if they do anything. Like jump of a cliff, Swim upwards. Place blocks above or below them.
It keeps kicking them
@ihasamoose
That and if they hit a tree while jumping in water
Also, moving water checks are still failing when players try to swim in moving water.
Thanks again,
Epics
error on console: version R: NoCheatPlus v3.5.5_3 [1.1 - 1.2.5] for CB 1.2.5-R1.0 3 hours ago and minecraft 1.2.5 server http://pastebin.com/Ev5eei4j
@kahlilnc
What he said!
WOW. Your updating this like crazy XD. Nice new features too. Glad your the new dev.
@ihasamoose
We would like to have a donation button too ;) Important stuff going on here needs some investment.
NeatMonster,
You should add a donation button. Your support and time spent on this project in general in the mere week or so it has been up deserves some donations. Keep up the good work!
I keep the latest version of this on my server at all times. You can test it at game.crystalmarsh.com if your server is ever overburdend.
@NeatMonster
SpamJoining still not fixed. It is Still no longer going by "NEW" player.dat files (A problem that originated in 3.5.5_2), its going by all of them, which is a mess. After a restart I got 200+ users hammering the server and nobody can get on.
Please make it by "new" player.dat files - not old existant ones....
@andrewkm @Puremin0rez Fixed in v3.5.5_3, thanks for the report!
I'll fix try to fix all the other issues (with McMMO, Heroes, AuthMeReloaded, Spout) in the next major update. The next update will probably come in few days.
@Puremin0rez
Experiencing this as well.
Oh, I'm here to ask about issues when running SpoutPlugin, but it seems someone already did. Please look into this, if possible. Everybody is getting kicked for flying, all the time.
If I set NoCheatPlus to 'allow flight' until this problem is solved, will it disable the basic protection against flight usually included with the server?
Also, can I safely increase the maximum horizontal flight speed without disabling or hindering the anti flight protection in survival mode? In creative mode with SpoutCraft, if the user has the flight speed slider set higher than 1x he can't really leave his position while flying.
It seems the AutoSign check is interfering with some normal behavior.
Users are unable to place more then one blank sign because it'll simply pop it off since it's a "duplicate" sign - could you disable it for blank signs?
@NeatMonster
Awesome thanks! And no problem; take em as donations now then :)
@samrg472 Instructions.txt.
@andrewkm OK, I'll fix this ASAP.
@andrewkm Thanks, but as I said on IRC, I'm focusing on fixing the checks ATM.
@Cayorion I haven't tried NoCheat+ with Spout, so there might be an incompatibility.
@TheStriker095 I'll try to integrate it to NoCheat+.
@TheStriker095
I heard he is adding it to NoCheat :)
I mean when I found NoPwnage, it only had like 200 downloads. This way everyone will have good antispam protection.
@Jshulmancloud
https://github.com/NeatMonster/NoCheatPlus/blob/master/Instructions.txt
can you explain how you set it to kick people for violations
It seems that spoutcraft users get kicked for flying even though they do not. This is the case using NoCheatPlus v3.5.5_1 and http://ci.getspout.org/job/SpoutPlugin/1099/