I'm currently using LAMP (MySQl + PhP + PhpMyAdmin) for web development class, but I'm kinda scared that someone could access to my data trough it.
How can i ensure that my server isn't available to the public? i want it only for me, i don't want to share it over the net or the Internet.
I'm currently using Ubuntu 14.04.5
I'm using Apache 2.4, PHP5.