HI Bacalan,
For example, my server public ip is 123.123.123.123
But now must use domain name for create SSL,
so I go and buy a public domain(mobile123.com) and point it to my server ip 123.123.123.123
so when you create the ssl, you need to key mobile123.com to create the ssl.
and under mobile setting, you need to key mobile123.com as your server.
so when you connect to mobile123.com mean connect to your server.