我没有使用hosts.allowor hosts.deny，而且 SSH 可以在我的 Windows 机器（相同的笔记本电脑，不同的硬盘驱动器）上运行，但不能在我的 Linux 机器上运行。
ssh -vvv root@host -p port 给出：
OpenSSH_6.6, OpenSSL 1.0.1f 6 Jan 2014
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 20: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to host [host] port <port>.
debug1: Connection established.
debug1: identity file /home/torxed/.ssh/id_dsa type -1
debug1: identity file /home/torxed/.ssh/id_dsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6
ssh_exchange_identification: read: Connection reset …