FOSS gamedev and creative worlds

Hello everyone,i have brought to life:a TARDIS building server for all those whovians out there. info below:
hamachi name:Minetest7
Hamachi password:1234
Minetest port:30000
YOU NEED TO INSTALL HAMACHI AND JOIN MY NETWORK BEFORE YOU GET THE IP!
the world is roughly flat,and has plenty of building room.

I thought hamachi has a room limit of 5 users.
That's not enough to enjoy Minetest. Please use port forwarding on your router instead.

Krock wrote:I thought hamachi has a room limit of 5 users.
That's not enough to enjoy Minetest. Please use port forwarding on your router instead.

I've followed the steps of how to make a server - on minetest wiki. But it doesn't work. I want to set online this server that I'm building: viewtopic.php?f=10&t=15014

...but... I don't know how to do. I've set the firewall udp port (30000) and nothing happens... I need some help please.