PortalBackport
Port of Nether Portal features from Minecraft 1.21+(includes TNT-related fixes)
About this Mod
portal-backport
简体中文
Port of Nether Portal features from Minecraft 1.21+ (includes TNT-related fixes)
Currently Ported Features:
- Allows falling blocks to pass through Nether portals
- Allows primed TNT entities to pass through Nether portals
- TNT passing through portals will no longer destroy portal blocks
TNT-Related Fixes:
- TNT retains the activator entity's data after portal traversal
- Preserves the portal traversal flag in TNT's
Teleportfield (fixes a bug where reloading chunks containing portal-traversed TNT would cause it to destroy the portal) - Stores the igniter entity's UUID in TNT's
Ownerfield (Note: Due to underlying engine limitations, this is a partial fix and does not guarantee successful entity resolution after world reload)
Explicitly Excluded Features:
- Teleportation of riding entities (requires extensive breaking changes and code injection)
- Non-player entities generating new portals in the target dimension when no valid exit exists (intentionally excluded to prevent breaking existing portal-based contraptions)
Available Versions
How to Install PortalBackport 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 (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "PortalBackport". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
PortalBackport 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 (1.20.1). You can switch loaders with one click in the panel.
Is PortalBackport compatible with fabric?
PortalBackport officially supports fabric for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with PortalBackport – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if PortalBackport 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 PortalBackport with just one click on your server.