MySql

Mysql is an open source relational system based on SQL, that is often used on web applications data.

Mysql uses tcp port 3306 by default.

With Mysql Enumeration we can execute SQL commands and gain access and informations about tables and data.

Login with MySQL

You may find a Mysql port, you can try to connect with the following command:
mysql -u username -p -h target-ip

It will ask the password, and if successful you can perform SQL operations and you may start from:
SHOW DATABASES;