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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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, Citizens, MagicSpells or MachinaCraft more compatbile with NoCheatPlus. Not all existing plugins are covered (yet), but you can leave a note or 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
Download officially approved versions on the Files page at BukkitDev.
Development builds have been moved over to the Jenkins at EcoCityCraft.
Do not download from any other source, do not use jars other people send you.
Changes by build number can be examined in the Jenkins changes list.
All commits can be seen in the GitHub commit history.
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 ticket or add to an existing 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).
Screenshot
Changes
NoCheatPlus 3.13.3-BETA-sMD5NET-b895
BETA release for CraftBukkit for Minecraft 1.8 – 1.8.8 (+ 1.7.x + 1.6.x + 1.5.x + 1.4.5-R1.0).
We recommend using ProtocolLib as well, because that is the only way we can monitor attack frequency past (roughly) CraftBukkit for Minecraft 1.7.10. Currently ProtocolLib support for 1.7.10 and earlier is restricted to using ProtocolLib 3.6.4.
Users of CompaNoCheatplus (mcMMO) should update CompatNoCheatPlus to build 83 as well!
3.13.3-BETA-sMD5NET-b895(cumulative)
BETA release (bug fix release).
MD5: 79364b259d35a19904ec69d29f6e817c
SHA512: 8440feda6944a98f635121276450eddf439ba1c83212ed07858b4aff1114e706cce1b2102e58e45a0fc72bec514a1738a268002c38a43c70d39995e2d0188c19
File size: 996682
Fixes
Allow ProtocolLib 3.6.4 for all supported versions of Minecraft.
Fix extreme speeding.
Fix moving on ENDER_PORTAL_FRAME.
Fix jumping on fence with water above. Special case for falling fast into water.
Disable the stance checking for 1.8 and later.
Fix legacy compatibility (THORNS, PacketFlying interpretation for 1.7.10 and before, disable net.attackfrequency on 1.6.4 and before, allviolations hook).
Other changes
Let the allviolations hook log for players who have debug set (thus shows up by default).
Only skip net.flyingfrequency on ACK, don’t cancel “stray” packets (potential cross-plugin issues, freezing).
Remove (some) deprecated configuration.
Internals
API change: move some things from ServerVersion to GenericVersion.
Set more internal Maven dependencies to ‘provided’ scope.
Random fixes (LinkedCoordHashMap).
For a more detailed change history see the build-info page:
Build 895
Previous beta releases:
Build 883
Build 878
Build 853 (Various optimizations, fixes, changes, depoptimizations had happened up to build 853, details are available in the commit history on GitHub.)
The documentation is now hosted at: https://github.com/NoCheatPlus/Docs/wiki
(The most recent versions of documents will be found with the file browser, the wiki might be slightly outdated at times.)
Note that jar files downloaded from anywhere else but BukkitDev are not approved by Bukkit-staff, use them at your own risk. Development builds for NoCheatPlus are found at the Jenkins on md-5.net exclusively.
Users of mcMMO, Citizens should consider using CompatNoCheatPlus as well to make most features compatible.
Download Links
For 1.8.1
http://download.minecraftdata.com/index.php?act=dl&id=271960
For 1.7.2
http://download.minecraftdata.com/index.php?act=dl&id=271961
Credits: NoCheatPlus
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