ssh_exchange_identification: Connection closed by remote host

Google tells me that I am blocked because of something like /etc/hosts.deny or some other reason, I did everything but problem remains there.

Until I checked the audit.log and found there many attempts of ssh login.

So I add ListenAddress line in /etc/ssh/sshd_config, everything works well now.
This is because I have an local IP address like 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, but if I only have a public IP, I may choose to change ssh running at another port.

ssh_exchange_identification: Connection closed by remote host by @sskaje: https://sskaje.me/2014/05/ssh_exchange_identification-connection-closed-remote-host/