SSH problem: Connection closed by foreign host. Disconnected from remote host

Put a remote IP can SSH server, but error:

Connection closed by foreign host.

Disconnected from remote host ...

Workaround:

1. Firewall firewall to put through IP.

2. /etc/ssh/sshd_config file modification, run the root user password login, and then restart the sshd service.

3. /etc/hosts.allow and/etc/hosts.deny files are modified to allow the corresponding host to access, and then restart the sshd service.

4. An error occurs when there are too many client connections.

   A. In each/etc/ssh/sshd_config, change #maxstartups 10 to maxstartups 10/100 and restart the sshd service

   B. Exit ssh normally and SSH connection can be released.

SSH problem: Connection closed by foreign host. Disconnected from remote host