Remote acess to MySql 5.7 does not working

Question

Hi guys I have a situation where I need that my Web Application, hosted in some other machine, access my local MySql Server Instance. My string connection looks like

mysql://<user>:<password>@<my_ip>:3306/<data_base_name>

However when I try to connect I am getting the error:

Can't connect to MySQL server on '1**.***.**.*7' (111)

Searching a little bit I discovered that it could be due the configuration of bind-address in my.conf file. However in MySql 5.7 there is no need to do that once, when I run the select below I get this:

show variables like 'bind%';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| bind_address  | *     |
+---------------+-------+

Searching a little bit more, I found that it could be due the firewall blocking connection on port 3306. Then I created an inbound and outbound rule for that, but I'm still getting this error and I can perfectly connect to my MySql Server locally.

Besides, I've already seen these posts:

1. Can't connect to MySQL server error 111
2. ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)
3. How to allow remote connection to mysql
4. https://serverfault.com/questions/823877/mysql-connection-not-working-with-windows-firewall-on

However none of them solved my problem. Someone can help me out?