Source: https://www.spigotmc.org/resources/geyser-minecraft-bedrock-protocol-support.81297/
We use this plugin to allow players to join on Bedrock via the floydcraft.online domain, This is also what we user as a platform for our Bedrock Lan Proxy
Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition, closing the gap from those wanting to play true cross-platform.
What is Geyser?
Geyser is a proxy, bridging the gap between Minecraft: Bedrock Edition and Minecraft: Java Edition servers. The ultimate goal of this project is to allow Minecraft: Bedrock Edition users to join Minecraft: Java Edition servers as seamlessly as possible. Please note, this project is still a work in progress and should not be used on production. Expect bugs!
To allow Xbox Live authentication on your server (i.e. Minecraft: Bedrock Accounts) you need to install Floodgate.
Special thanks to the DragonProxy project for being a trailblazer in protocol translation and for all the team members who have now joined us here!
Setup
Bedrock clients will join through Geyser and it will handle all the packet translations. There are four different versions of Geyser: Geyser for Bukkit (works on derivatives such as Spigot and Paper), Geyser for BungeeCord (also works on Waterfall), Geyser for Velocity, and Geyser Standalone. The first three versions run as plugins and can be installed directly onto the server. The standalone version can be used in a similar way, except you run it separately.
If you are running a server, it is highly recommended you use one of the plugin versions, and if you want to join a server that does not have Geyser installed, you can run the standalone version. If you use Pterodactyl Panel we have an egg for the standalone version, please see here for more information.
If you’re still having problems with Geyser not working or giving you an “Unable to connect to world” error, see the Common Issues page.
For more information, take a look at the Understanding the Config page, and the FAQ page.
And if you still have questions, feel free to join the Discord if you haven’t already.
