How do you secure your server?
I'm pretty new at this topic. I have used remote server for long time. But It was for just development. And I didn't care about security. But now server may go to production. I wanna secure my server.
What do you suggest me? What do you do when you secure your server?
I changed the SSH port to different one. Added SSH key with pass pharase. What are the next steps I should take?