1. 安装cygwin, 并安装sshd.(跟openssh有关的都选上^^)
2. 打开cygwin控制台：输入ssh-host-config，一路yes.（如果vista或者win7，需要右键->管理员身份运行 cygwin）
部分屏幕显示：
$ ssh-host-config
Overwrite existing /etc/ssh_config file? (yes/no) yes
Generating /etc/ssh_config file
Overwrite existing /etc/sshd_config file? (yes/no) yes
Privilege separation is set to yes by default since OpenSSH 3.3.
However, this requires a non-privileged account called 'sshd'.
For more info on privilege separation read /usr/share/doc/openssh/README.privsep.
Should privilege separation be used? (yes/no) yes
Generating /etc/sshd_config file
Host configuration finished. Have fun!
3. 提示安装成功. cygwin控制台 输入net start sshd, 启动 ssh服务.
$ net start sshd
CYGWIN sshd 服务正在启动 .
CYGWIN sshd 服务已经启动成功。
4.修改默认Administrator密码CYGWIN sshd 服务正在启动 .
CYGWIN sshd 服务已经启动成功。
$passwd Administrator
5.使用XShell连接localshot,用户名密码为 Administrator和密码
