Modded Server Compatibility

Gate provides excellent compatibility with modded Minecraft servers including Fabric and NeoForge. This guide will help you set up Gate to work seamlessly with your modded servers.

Overview

Gate provides comprehensive support for modded Minecraft servers, implementing the same forwarding protocols as described in the Velocity documentation:

Forwarding Modes Supported

• Velocity modern forwarding - Secure binary format with MAC authentication (Minecraft 1.13+)
• Legacy BungeeCord forwarding - Compatible with older versions and servers
• BungeeGuard forwarding - Enhanced security over legacy forwarding
• No forwarding - Basic proxy functionality without player data forwarding

Fabric Server Setup

Gate works with Fabric out of the box, but you should add support for player info forwarding using a mod like FabricProxy-Lite (which supports Velocity modern forwarding).

In addition, if you intend to run mods that add new content on top of Vanilla, you should install CrossStitch, which improves support for certain Minecraft features that are extended by mods, such as custom argument types. This mod is officially maintained by the Velocity project.

Required Mods

FabricProxy-Lite (For Velocity Forwarding)

• Purpose: Enables Velocity modern forwarding for Fabric servers
• Download: FabricProxy-Lite on Modrinth
• Requires: Fabric API (dependency)

Version Compatibility

Always download the mod version that matches your Minecraft server version. Check the compatibility table on the mod page.

CrossStitch (Recommended for Modded Content)

• Purpose: Improves support for Minecraft features extended by mods (custom argument types, etc.)
• Download: CrossStitch on Modrinth
• Maintained by: Velocity project (official)

Server Configuration

server.properties

server-port=25566
online-mode=false 
motd=Fabric Server with Gate Proxy

config/FabricProxy-Lite.toml

hackOnlineMode = false
hackEarlySend = false
hackMessageChain = false
disconnectMessage = "This server requires you to connect with Gate."
secret = "your-secret-key-here"

Gate config.yml

config:
  bind: 0.0.0.0:25565
  servers:
    fabric-server: localhost:25566
  try:
    - fabric-server
  forwarding:
    mode: velocity
    velocitySecret: 'your-secret-key-here'
  status:
    motd: |
      §bGate Proxy with Fabric
      §eVelocity Forwarding Enabled

Configuration File

If FabricProxy-Lite.toml doesn't appear in the config/ directory after server restart, create it manually or use environment variables:

Environment Variables Alternative:

export FABRIC_PROXY_SECRET="your-secret-key-here"
export FABRIC_PROXY_HACK_ONLINE_MODE=false
export FABRIC_PROXY_HACK_EARLY_SEND=false
export FABRIC_PROXY_HACK_MESSAGE_CHAIN=false

NeoForge Server Setup

Gate works with NeoForge out of the box, but you should add support for player info forwarding using a mod like Proxy-Compatible-Forge (which supports Velocity modern forwarding).

Required Mods

Proxy-Compatible-Forge (For Velocity Forwarding)

• Purpose: Enables Velocity modern forwarding for NeoForge servers
• Download: Proxy-Compatible-Forge on GitHub
• Supports: NeoForge 1.16.5 - 1.20.x+

Version Compatibility

Ensure you download the correct mod version for your NeoForge server version. Check the releases page for compatibility information.

Server Configuration

server.properties

server-port=25567
online-mode=false 
motd=NeoForge Server with Gate Proxy

config/pcf-common.toml

#Modern Forwarding Settings
[modernForwarding]
    forwardingSecret = "your-secret-key-here"

[commandWrapping]
    #List of argument types that are not vanilla but are integrated into the server
    moddedArgumentTypes = ["livingthings:sampler_types"]

Gate config.yml

config:
  bind: 0.0.0.0:25565
  servers:
    neoforge-server: localhost:25567
  try:
    - neoforge-server
  forwarding:
    mode: velocity
    velocitySecret: 'your-secret-key-here'
  status:
    motd: |
      §bGate Proxy with NeoForge
      §eVelocity Forwarding Enabled

Multi-Server Setup

You can run both Fabric and NeoForge servers behind the same Gate proxy:

Gate config.yml

config:
  bind: 0.0.0.0:25565
  servers:
    fabric-server: localhost:25566 # Fabric server
    neoforge-server: localhost:25567 # NeoForge server
    vanilla-server: localhost:25568 # Vanilla server
  try:
    - fabric-server
    - neoforge-server
    - vanilla-server
  forwarding:
    mode: velocity
    velocitySecret: 'shared-secret-key'
  status:
    motd: |
      §bGate Multi-Server Network
      §eFabric • NeoForge • Vanilla

Troubleshooting

Common Issues

Connection Refused

• Check server ports - ensure servers are running on configured ports
• Verify firewall - make sure ports are accessible
• Check server logs - look for startup errors

Forwarding Issues

• Secret mismatch - ensure velocitySecret matches in both Gate and mod configs
• Online mode - must be false on backend servers when using forwarding
• Mod compatibility - verify the forwarding mod supports your server version

Mod Compatibility Notes

Incompatible Mods

Some older mods may not work with current NeoForge versions:

• NeoVelocity 1.2.4 - Incompatible with NeoForge 21.8.x
• NeoForwarding 1.3.0 - Only supports older NeoForge versions

Security Considerations

When running modded servers:

• Use velocity forwarding when possible for better security
• Configure firewalls to block direct access to backend servers
• Regular updates - keep Gate and mods updated

Getting Help

If you encounter issues:

1. Check the logs - both Gate and server logs
2. Verify versions - ensure compatibility between Gate, server, and mods
3. Community support - join the Gate Discord
4. GitHub issues - If you encounter a reproducible bug or have a technical issue that includes logs, error messages, or steps to reproduce, please report it on the Gate repository. For general questions or troubleshooting without technical details, use the Gate Discord.

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This guide covers the most common modded server setups. For specific mod compatibility questions, consult the mod's documentation or community.