UPNP for dedicated servers

Automatically forwards ports for your dedicated minecraft server with UPNP

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fabricforgeneoforgeutility

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About this Mod

Automatically forwards ports for your dedicated minecraft server with UPNP. Opens ports when the server starts, and closes them when it stops. Useful if you want to quickly set up a server for your friends without the hassle of third party hosting or manually forwarding ports.

Usage:

The forwarded ports are configurable in the config file at config/upnp.txt.

Use the /upnp command to see in chat which ports are mapped and the IP players need to connect to the server with.

Both UDP and TCP ports can be opened. By default only the port TCP 25565 will be opened (the default port for Minecraft servers).

If you are using mods such as Simple Voice Chat or Geyser, you must add the relevant ports to the config.

Available Versions

v2.1.1release

MC 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8neoforge

July 17, 2025

v2.1.1release

MC 1.19.4fabric

July 17, 2025

v2.1.1release

MC 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8fabric

July 17, 2025

2.1.0release

MC 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7neoforge

July 13, 2025

2.1.0release

MC 1.19.4fabric

July 13, 2025

How to Install UPNP for dedicated servers 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 (1.21.8).

Install Mod

Open the mod browser in the dashboard and search for "UPNP for dedicated servers". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.8, 1.21.7, 1.21.6 (+23 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

UPNP for dedicated servers 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 (1.21.8). You can switch loaders with one click in the panel.

Is UPNP for dedicated servers compatible with fabric and forge and neoforge?

UPNP for dedicated servers officially supports fabric, forge, neoforge for Minecraft 1.21.8, 1.21.7, 1.21.6. 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 UPNP for dedicated servers – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if UPNP for dedicated servers 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.