Anti Join Bot

Bukkit Firewall / Proxy Blocker

This plugin protects your server from bots that use proxies!

The players IP will be automatically verified when they join.

The plugin has been written to have an High level of performance.


  • Works with probably every Minecraft version
  • UUID Support aswell as Nickname support (for Offline mode Servers)
  • Whitelistless (Doesn't require to activate a Whitelist to block the bots)
  • Configurable delayed start (to reduce plugin load on server start/restart)
  • MySQL/SQLite support
  • Downloadable Blacklist on server start
  • Customizable Blacklists ("URL:Response" format) (Paste the URL with , instead of .)
  • Customizable Kick Messages
  • Quickly Disable/Enable the plugin via command
  • Reload the config in game
  • Permission to bypass checks
  • User Whitelist/Blacklist
  • Force check mode (Kick everyone for the first check, player is asked to rejoin)
  • Permission support
  • Proxy check from Server List and change MoTD if a proxy is found (Beta)
  • Debug mode available
  • Plugin Metrics



1. Put the "AntiJoinBot.jar" in the plugin folder and run the server.

2. It will create a folder called "AntiJoinBot" containing the "config.yml" (Default Config) and the "offline_data.db".

3. Ready ;D

Permissions and Commands:

Bypass checks:

Permission: "ajb.bypass"

Add/block players in whitelist:

Permission: "ajb.add"

  • "/ajb add <player>" -> (add player to whitelist)
  • "/ajb block <player>" -> (add player to blacklist)

Toggle AntiJoinBot:

Permission: "ajb.toggle"

  • "/ajb toggle"

Reload Configuration and Database Connection:

Permission: "ajb.reload"

  • "/ajb reload"

If you can not connect, please wait 24 hours and try it again or restart your router.

If this plugin helped you, please Donate ;D

Default Blacklist API's:

Source: (Before 5.0) (After 5.0)


Minecraft Serverlist (DE)

Minecraft Serverlist (EN)

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  • Avatar of Maxetto Maxetto Feb 02, 2015 at 23:39 UTC - 0 likes

    So, DevBlog #1:

    What's new:
    • Local IPs (192.168.1.* and 192.168.0.*) are left out from the Blacklist check (if you want to test your server just use your External IP)
    • Added a Downloadable Blacklist (Download starts every boot and populates the database, SQLite or MySQL whatever)
    To Do:
    • Better help with commands
    • Reload command with database connection reload
    • Configurable Timeout on the checks (?)
    • UUID Support (Not really useful for this plugin, but let's see what I can do)
    • Configurable TimeStamps to re-check the IP after some time
    • Config Auto-Updater
    Last edited Feb 04, 2015 by Maxetto
  • Avatar of Maxetto Maxetto Feb 02, 2015 at 17:06 UTC - 0 likes

    @Pablo_M98: Go

    Got some time to test the plugin. At it's current version (4.3) it works perfectly with CB 1.7.9 and Spigot 1.8 (and probably 1.7.10 and older MC Versions, tested also with 1.5.2) It just uses usernames instead of the new UUIDs

  • Avatar of Pablo_M98 Pablo_M98 Feb 01, 2015 at 17:17 UTC - 0 likes

    Please update to 1.8!

  • Avatar of LordDWT LordDWT Jan 31, 2015 at 01:27 UTC - 0 likes

    @Maxetto Very good to hear!

  • Avatar of Maxetto Maxetto Jan 31, 2015 at 01:01 UTC - 0 likes

    @Past1rma: Go

    @LordDWT: Go

    Hi guys, I'm back! Working on an update with UUID support (if any). Plugin should work with 1.8 and 1.7.X anyway, it just uses the Usernames instead of the UUIDs.

    @NewBestACS: Go

    Just checked this blacklist and i found it's dead (error 500). Got some replacements for the new version ;)

  • Avatar of LordDWT LordDWT Dec 18, 2014 at 20:10 UTC - 0 likes

    Any plan to update this to 1.8?

  • Avatar of NewBestACS NewBestACS Dec 12, 2014 at 20:05 UTC - 0 likes

    running very slowly some hours, causing a massive lag and all players getting kicked. If debug is off, nothing will appear in the console, the players will just get kicked like every 5 mins.

  • Avatar of Past1rma Past1rma Sep 13, 2014 at 00:39 UTC - 0 likes

    1.7.10 ?

  • Avatar of MasterMithrandir MasterMithrandir Aug 19, 2014 at 19:30 UTC - 0 likes

    @CookieDEV: Go

    Was this an answet to my issue maybe?

    Servidor Español:

  • Avatar of CookieDEV CookieDEV Aug 17, 2014 at 01:40 UTC - 0 likes

    ====== As service begins?/ajb enable ? ======

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Date created
Oct 20, 2012
Last update
Feb 28, 2015
Development stage
  • enUS
GNU General Public License version 3 (GPLv3)
Curse link
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