public int getMySQLPort() throws GuacamoleException {
        return getProperty(MySQLGuacamoleProperties.MYSQL_PORT, DEFAULT_PORT);
    }
Returns the port number of the MySQL server hosting the Guacamole
authentication tables. If unspecified, this will be the default MySQL
port of 3306.

@return
    The port number of the MySQL server.

@throws GuacamoleException
    If an error occurs while retrieving the property value.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/java/org/apache/guacamole/auth/mysql/conf/MySQLEnvironment.java