How to close a link to phpmyadmin?

Question

Apache HTTP Server

There is a droplet on digital ocen with ubuntu. It contains two sites site.com and dev.site.com. I installed php myadmin according to the instructions https://www.digitalocean.com/community/tutorials/h... everything is fine, but now it is available both on site.com/phpmyadmin and dev.site.com/phpmyadmin and on server_ip/phpmyadmin . How to leave access only by server_ip/phpmyadmin ?