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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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
-
_ForgeUser9668734 Owner
-
_ForgeUser15078623 Ticket Manager
-
_ForgeUser16101223 Contributor
-
_ForgeUser7091862 Former Author
-
_ForgeUser7459264 Former Author
-
Forge_User_61842651 Author
-
MyPicturesCP Artist
-
View User Profile
-
Send Message
Posted Jun 4, 2015@ItsLemonmelon
Sorry for the late answer: Hits that get detected as impossible/cheating will be canceled. I would recommend to open up a ticket and fill out everything asked for "Defect" layout and don't forget to do "/ncp info <Player>" to get all checks that cancel hits.
-
View User Profile
-
Send Message
Posted May 31, 2015@asofold
Why are the hits not all registering with NCP?
What should I do to set pvp combat stuff same as default on NCP?
-
View User Profile
-
Send Message
Posted May 31, 2015@Bobcat00
This might be better with buid 823.
-
View User Profile
-
Send Message
Posted May 31, 2015Players seem to be getting angle violations when fighting multiple zombies with build 818. They could be hacking, but I saw it happen to two players, one who has been around a long time.
-
View User Profile
-
Send Message
Posted May 31, 2015@ItsLemonmelon
If i understand right, those can't be changed. At least people know what command they are running - could be worth a ticket (full language customization).
-
View User Profile
-
Send Message
Posted May 31, 2015@MyPictures
Uh, why isn't the /ncp info/inspect and stuff message's prefix not changing?
-
View User Profile
-
Send Message
Posted May 30, 2015@Grimwiire
You can subscribe to this ticket for further updates on this issue: http://dev.bukkit.org/bukkit-plugins/nocheatplus/tickets/364-moving-with-pistons-survivalfly-also-slime-blocks/
@Schneidertm
This means that your system clock was changed (NoCheatPlus uses your servers clock for counting and more) and NC+ removed all check history because of it (to have accurate results again). Make sure that your servers time doesn't change too much (pls don't use atomic time adjusters or similar).
@zizitt
The developer of it didn't really want us to block his mod so it was kinda complicated, more here: http://dev.bukkit.org/bukkit-plugins/nocheatplus/tickets/719-voxel-map-mod-support/
The permissions from JourneyMap should also work for Voxel.
@ItsLemonmelon
You can use Bukkit Aliases to do that: https://github.com/NoCheatPlus/Docs/wiki/Commands
For second you need to remove every single cancel action from that specific checks: https://github.com/NoCheatPlus/Docs/wiki/Global#actions
Be careful: Some checks will be a lot less effective if you disable setbacks!
-
View User Profile
-
Send Message
Posted May 30, 2015How do I change the format for
/ncp info
/ncp inspect
/ncp lag
And others, basically all...
And 1 more thing, how do I make it so when NCP thinks a player hacks, you get pulled back to block and whatnot right, so how do I disable that but still send notifications to staffs that the player may be hacking...?
-
View User Profile
-
Send Message
Posted May 30, 2015Does this plugin have a feature to shut of the entity radar in voxel minimap now? I read the ticket that was filed while ago but it didn't seem to have a clear answer.
-
View User Profile
-
Send Message
Posted May 29, 2015What does these message say?
-
View User Profile
-
Send Message
Posted May 27, 2015Sorry if this has been posted already but; if a player stands on a slime activated by a piston, they cannot go airborne because npc vl 100. It thinks they're trying to fly. Thanks.
-
View User Profile
-
Send Message
Posted May 26, 2015@Bobcat00
So far so good :) - i'll attempt to increase pace now....
@Simo389
That looks like testing with bypass permissions for survivalfly or being in creative mode or flying... is the jumping intended for creative mode or for survival mode players?
-
View User Profile
-
Send Message
Posted May 26, 2015@asofold
Build 818 loads. Didn't do any further testing.
-
View User Profile
-
Send Message
Posted May 25, 2015@Simo389
Does this ticket relate to your issue? http://dev.bukkit.org/bukkit-plugins/nocheatplus/tickets/891-adding-velocity-to-a-player-cancels-it-when-moving/
Could you check if adding the velocity does lead to a PlayerVelocityEvent? You can also indirectly check by testing with activating debug logging in NCP ("/ncp debug player NAME"), it should add an entry about adding velocity if the event fires (and other valuable output) . When done you can do ncp reload or use ncp remove to stop the temporary logging to the log file.
@Bronzeteufel
@Bobcat00
I will deal with those today.
EDIT: Build 818 should fix that, still not much tested for block shapes / oddities though.
-
View User Profile
-
Send Message
Posted May 25, 20151.8.6 is out. NMS is supposedly the same as 1.8.5, but NCP build 817 complains about it:
"Could not set up native access for the server-mod (git-Bukkit-b0e81a4 (MC: 1.8.6)). Please check for updates and consider to request support."
-
View User Profile
-
Send Message
Posted May 25, 20151.8.5 is out, so nvm my post below.
-
View User Profile
-
Send Message
Posted May 24, 2015@dimasaurio
The download page states it's for 1.6 - which might be an issue with PEX if you are running it with 1.8. We did have difering reports of crashes (not necessarily involving NCP though) with java 8 and MC 1.8, some concerning netty.
@alek123222
You can remove the kick action (just remove cmd:kickpackets from the list). I don'T suggest donwtuning the setting because that will allow even worse speeding - while
downtuningstunning will be ok with set-backs, supposedly.-
View User Profile
-
Send Message
Posted May 24, 2015Got a problem, I use a plugin called skillapi and one of my skills stun targeted player in position, nocheatplus straight away kicks that player for sent too many moves packets. Where can I down tune this setting?
-
View User Profile
-
Send Message
Posted May 23, 2015@asofold
No it isn't outdated.
-
View User Profile
-
Send Message
Posted May 22, 2015@Simo389
The double jumping is outside of the usual envelope, provided they use the "allow-flight" property to make "double jump" work. Which plugin/method is it?
@xion87
Very odd, even with so few events counted. What server version is that ?
@MasterMithrandir
Some day likely - right now we are slightly behind. In general we encourage to use plugins that cover things we don't or can't or don't want to, provided those are compatible etc. I can't judge how good that plugin is, also i'd always be careful with people boasting about "false positive free". If it has been around for a while and has some reviews and claims to be compatible... why not try it? I will try to get back at NCP these days to gain back some ground, we've recently lost.
@dimasaurio
Isn't your version of PermissionsEx outdated?