[How to not let others activate your server?]

12 hours ago, ChaoticFlippy said:

Hey there!

Please make sure you're using the correct category when posting on the forums, I have moved this to Help where it belongs. Thanks! 

I’m so sorry, I didn’t know that. 

[How to not let others activate your server?]

I recently started a server and I don't want to let others start up my server with the command /join servername. How do I do this?