IP Whitelist (Fabric)
Whitelist players using their IPs instead of their names.
About this Mod
🛡️ IP Whitelist
A lightweight, server-side Fabric mod that lets admins control who joins based on their IP addresses.
By default, the mod is disabled when first installed to prevent you from locking yourself out. Join your server, then run /ipwhitelist add <yourname> followed by /ipwhitelist on to secure your server.
Features
- IP-Based Security: Blocks connections before the player even joins the world.
- Private servers friendly: Doesn't rely on UUIDs or other authentication methods that won't work on offline-mode servers.
- Simple & Lightweight: Basic protection that works without having to set up complex authentication systems.
Commands
All commands require OP.
| Command | Description |
|---|---|
/ipwhitelist on |
Enables the IP check. Players not on the list will be kicked. |
/ipwhitelist off |
Disables the check. Anyone can join. |
/ipwhitelist add <player> |
Grabs the IP of an online player and adds it to the list. |
/ipwhitelist addip <ip> |
Manually adds a raw IP address (e.g., 1.2.3.4) to the list. |
/ipwhitelist remove <player> |
Removes the IP of an online player from the list. |
/ipwhitelist removeip <ip> |
Removes a specific IP from the list (supports tab-completion). |
/ipwhitelist list |
Displays all currently whitelisted IP addresses. |
/ipwhitelist reload |
Forces a refresh of the config and whitelist files from the disk. |
Configuration
The mod creates a folder at /config/ipwhitelist/ with two files:
ip-whitelist.txt: A simple list of allowed IPs (one per line). You can edit this manually and run/ipwhitelist reload.ip-whitelist-config.properties: Stores theenabled=true/falsestate.
Available Versions
How to Install IP Whitelist (Fabric) on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "IP Whitelist (Fabric)". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
IP Whitelist (Fabric) server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is IP Whitelist (Fabric) compatible with fabric?
IP Whitelist (Fabric) officially supports fabric for Minecraft 1.21.11, 1.21.10. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with IP Whitelist (Fabric) – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if IP Whitelist (Fabric) consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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