ProperProxyProtocol
Adds proxy protocol capabilities to your Minecraft server (that actually work). Also fixes TCPShield for modded servers.
Screenshots

About this Mod
Overview
This mod adds Proxy Protocol (or HAProxy) support to your Minecraft server. It also fixes TCPShield connections on your server!
FAQ
Q: Does this affect performance?
A (Simple): No.
A (Full): No, this mod only reads connection packets and checks if they are using an HAProxy header. There is no hard operations happening. If anything, this should speed up logins as we patch players loading in to the world. We do this because the HAProxy handler handles connections on a different thread than the main server thread.
Q: Does this fix TCPShield connections?
A (Simple): Yes!
A (Full): Yes! You can actually turn proxy-protocol to enabled in your TCPShield panel and then your players' IPs will actually be parsed correctly by your server.
Currently Supported
Platforms
- NeoForge
- Fabric
- Forge
Versions
- 1.21.11
- 1.21.1
- 1.20.1
Requirements
0 requirements!
Available Versions
How to Install ProperProxyProtocol 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 "ProperProxyProtocol". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+16 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
ProperProxyProtocol 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 ProperProxyProtocol compatible with fabric and forge and neoforge?
ProperProxyProtocol officially supports fabric, forge, neoforge for Minecraft 1.21.11, 1.21.10, 1.21.9. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with ProperProxyProtocol – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ProperProxyProtocol 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.
Rent Modded Server
Install ProperProxyProtocol with just one click on your server.