How to Disable the Nether on a Minecraft Java Edition Server

When the Nether is disabled, nether portals stop working and players can no longer enter the Nether dimension. Players who are already in the Nether are moved back to the overworld on their next login.

Disable the Nether

1. Stop the server
   Stop your server via the dashboard.

2. Open server.properties
   Connect to your server via SFTP and open the file server.properties.

3. Find the entry
   Search for the following entry:

   allow-nether=true
   

4. Change the value
   Change the value to false:

   allow-nether=false
   

5. Start the server
   Save the file and start your server.