Why is port not open? ufw disabled, service running

Question

I have a mysql service running on ubuntu server on port 33070. I can connect to it locally, but not from outside(another machine).

Here is what I've tried.

1. ufw is off

root@localhost:/# ufw status
Status: inactive

2. service is running

root@localhost:/# sudo netstat -tnlp | grep :33070
tcp        0      0 0.0.0.0:33070           0.0.0.0:*               LISTEN      81379/docker-proxy 

3. telnet on server

root@localhost:/# telnet localhost 33070
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
[
Wn7.28-0ubuntu0.18.04.4?R^9J4

4. telnet from my local machine

myuser@my-MacBook-Pro / % telnet serverIp 33070
Trying serverIp...
telnet: connect to address serverIp: Operation timed out
telnet: Unable to connect to remote host

Why I have timeout when trying to connect to 33070 port from my local machine and what else should be configured on the server?

Another thing which I've tried is

I've also a service running on server 33066 port, which is open and available from my local machine. And all the above commands looks like the same for 33066 except the last one.

myuser@my-MacBook-Pro / % telnet serverIp 33066
Trying serverIp...
Connected to serverIp.
Escape character is '^]'.
[
X['bu%)^mysql_native_password