e4mc Retro
e4mc Retro is an adapted version of the e4mc mod that allows you to open your local Minecraft world to players over the internet — even in older versions of the game.
What is e4mc?
e4mc is a software solution that performs reverse tunneling and proxy functions for Minecraft. In simple terms, it's a tool that temporarily makes your local server accessible from anywhere in the world via the internet.
How to use?
Install the mod and start the game in "Open to LAN" mode as usual. A public domain will appear next to the local port. Other players will be able to connect to your server using this public address.