RVM VectorWall

Lightweight Velocity plugin with one-time token authentication

RVM VectorWall is a Velocity proxy plugin that provides secure server access through a one-time token (UUID) system. The plugin checks each connecting player's UUID against an HSQLDB database and only allows access to those whose UUID has been pre-added. After successful login, the token is automatically deleted, preventing reuse.

Main Mechanics

1. You (admin or external system) add a player's UUID to the token database
2. Player connects to Velocity
3. Plugin checks if the UUID exists in the database
4. If found → player is allowed to join the server, token is deleted
5. If not found → player is rejected with an unauthorized access message

Features

• One-time tokens — each token is used only once
• Automatic deletion — token is removed immediately after successful login
• Logging — detailed logs for each successful or failed attempt
• Simple — no client-side mods required
• HSQLDB — embedded database, no separate server required
• Velocity 3.5.0+ — fully compatible with latest versions

Requirements

• Velocity 3.5.0 or higher
• Java 17 or higher