Disabling the Nether

Disabling the Nether dimension is the same for all Minecraft Java Edition servers!

First Step: Stop your server and navigate to the File Manager.

Second Step: Open the file named server.properties, find the line where it says allow-nether=true and change it to allow-nether=false.

Image Nether #1
Image Nether #2

Third Step: Restart your server from the panel!

The Nether dimension should now be disabled for everyone in your server! If you want to re-enable it, follow the steps above but change allow-nether=false to allow-nether=true.

Disabling the End

Disabling the End dimension is only possible on Spigot/Paper Servers!

First Step: Stop your server and navigate to the File Manager.

Second Step: Open the file named bukkit.yml, find the line where it says allow-end: true and change it to allow-end: false.

Image End #1
Image End #2

Third Step: Restart your server from the panel!

The End dimension should now be disabled for everyone in your server! If you want to re-enable it, follow the steps above but change allow-end: false to allow-end: true.