Thank you Rafael, I did not try ssh with password in this machine, from the beginning I follow the steps to enable ssh-keys connection, and in this process I modify the ssh_config. Once I want back to the ssh connection with password, the connection is refused too, maybe I change some setup in the sshd_config.
I just create a new VM with another Bitnami and trying you from scratch, yes you right, I establish easy the ssh connection. Great ....
Now I will check and comprare the 2 files sshd_config to understand what I edited.
After I can connect from my computer, I will copy the public key and try to change sshd_config to use with the keys.
Again thank you, your answer it seams obviously and open my eyes.