Understanding BungeeIPWhitelist: Securing Your Minecraft Network
Running a Minecraft server network with BungeeCord opens up incredible possibilities for mini-games, multiple worlds, and seamless player transfers. However, it also introduces a critical security concern: players bypassing your proxy and connecting directly to backend servers. This is where BungeeIPWhitelist becomes an essential tool for any server administrator who values network integrity. By restricting connections to only those coming through your trusted BungeeCord proxies, this plugin slams the door on unauthorized access attempts.
What Exactly Is BungeeIPWhitelist?
BungeeIPWhitelist is a lightweight Spigot or Paper plugin designed to work alongside BungeeCord. Its sole purpose is to block any login attempt that does not originate from a pre-approved BungeeCord proxy IP address. In a typical setup, your BungeeCord instance sits in front of all your game servers, handling player connections and forwarding them to the correct backend. Without a plugin like this, a clever player could simply connect directly to a backend server's IP and port, bypassing any network-wide bans, authentication systems, or other proxy-level protections you have in place.
The plugin accomplishes this by checking the incoming connection's IP against a whitelist you define. If the IP matches one of your BungeeCord proxies, the player is allowed through. If not, the connection is refused. It works seamlessly with BungeeCord's IP forwarding feature, ensuring that the player's real IP is still visible on the backend server for logging and moderation purposes.
Why Your Server Network Needs It
Imagine spending hours configuring a perfect hub server with anti-cheat measures, only to have players skip it entirely and join a survival world directly. They could use hacked clients, spam chat, or exploit vulnerabilities without ever touching your proxy's defenses. BungeeIPWhitelist eliminates that loophole. It forces every player to enter through the front door—your BungeeCord proxy—so all your network-wide rules and plugins remain effective. This is particularly important for networks that use premium authentication, VPN blockers, or custom login systems at the proxy level.
For server owners who enjoy tinkering with mods and plugins, managing a complex setup becomes much simpler when you have a reliable tool like this. If you ever need to quickly test a modded environment, you might appreciate how a modern launcher can streamline the process. For instance, this mod can be easily installed via the foxygame.net launcher — a convenient, flexible, and modern Minecraft launcher where you can download mods right from the menu, making it a breeze to switch between vanilla and modded profiles without manual file juggling.
Installation and Configuration
Getting BungeeIPWhitelist up and running takes only a few minutes. First, download the plugin JAR file from a trusted source and place it into the plugins folder of every backend server connected to your BungeeCord network. After a server restart, a config.yml file will be generated. The configuration is refreshingly straightforward:
- ip-forwarding: Set this to true or false to match your BungeeCord configuration. If you use BungeeCord's IP forwarding (the ip_forward setting in its config.yml), enable it here. This ensures the plugin correctly identifies the original player IP even after the proxy forwards the connection.
- whitelisted-ips: A list of IP addresses belonging to your BungeeCord proxies. You can add as many as you need—there is no arbitrary limit. If you run multiple proxy instances for load balancing or geographic distribution, simply list all of them.
After editing the config, use the /biw reload command to apply changes without restarting the server. That is all it takes to lock down your backend servers.
Commands and Permissions
BungeeIPWhitelist keeps administration simple with a minimal command set. The main command is /biw, which by itself shows basic plugin information. For more details, /biw help or /biw ? displays all available commands. The reload subcommand, /biw reload, refreshes the configuration from disk, allowing you to add new proxy IPs or toggle IP forwarding without a full server reboot. This is especially handy during maintenance windows when you need to temporarily add a testing proxy.
Access to the reload command is controlled by a single permission node: ipwhitelist.admin. Grant this only to trusted staff members, as reloading the configuration can potentially lock out players if misconfigured. There are no other permissions, keeping the plugin lightweight and easy to manage.
Features and Flexibility
Despite its simplicity, BungeeIPWhitelist packs several thoughtful features. The infinite whitelist space means you can add dozens of proxies without hitting a cap, making it suitable for large-scale networks. The plugin also functions correctly both with and without BungeeCord's IP forwarding enabled, so you can tailor it to your exact network architecture. If you prefer not to forward player IPs to backend servers for privacy reasons, the plugin still works—it just checks the direct connection IP against your whitelist.
The plugin also includes optional metrics reporting via mcstats.org, which you can disable in the config by setting opt-out to true under the PluginMetrics section. This helps the developer understand usage patterns while respecting your privacy. As an experimental release, the developer welcomes bug reports to improve future versions, though the core functionality is stable and battle-tested on production servers.
Looking Ahead
While BungeeIPWhitelist already fulfills its primary mission, the developer hints at possible future enhancements. The open-ended roadmap leaves room for community-driven improvements, and the experimental nature of the release suggests that user feedback will shape its evolution. For those curious about the underlying mechanics, the developer has shared a related project called CurseIPFix, which performs a similar IP filtering function but without a configuration file. The source code for CurseIPFix is available on GitHub at github.com/ElCreeperHD/CurseIPFix, offering a peek into how such plugins intercept and validate connections.
Final Thoughts
BungeeIPWhitelist may be a single-purpose plugin, but it addresses a critical vulnerability that many server networks overlook. By enforcing that all player traffic flows through your BungeeCord proxy, you maintain full control over who accesses your servers and under what conditions. The setup is painless, the performance impact is negligible, and the peace of mind is invaluable. Whether you run a small community network or a large multi-server enterprise, adding this layer of protection is a smart move. Combine it with robust proxy-level security measures, and you have a fortress that keeps the wrong players out while welcoming your community through the proper channels.