cygwin安装sshd服务并实现无密码登录

http://blog.csdn.net/cybercode/article/details/7080743

这篇文章主要是为我在win7（64位）下搭建hadoop环境所准备的。首先参照在cygwin使用总结这篇文章在cygwin中安装所必须得软件包，然后如下进行操作：

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sony@sony-VAIO~ $ ssh-host-config

*** Info: Generating /etc/ssh_host_key

*** Info: Generating /etc/ssh_host_rsa_key

*** Info: Generating /etc/ssh_host_dsa_key

*** Info: Generating /etc/ssh_host_ecdsa_key

*** Info: Creating default /etc/ssh_config file

*** Info: Creating default /etc/sshd_config file

*** Info: Privilege separation is set to yes by default since OpenSSH 3.3.

*** Info: However, this requires a non-privileged account called 'sshd'.

*** Info: For more info on privilege separation read /usr/share/doc/openssh/READ

ME.privsep.

*** Query: Should privilege separation be used? (yes/no) no

*** Info: Updating /etc/sshd_config file

*** Query: Do you want to install sshd as a service?

*** Query: (Say "no" if it is already installed as a service) (yes/no) yes

*** Query: Enter the value of CYGWIN for the daemon: netsec] netsec

*** Info: On Windows Server 2003, Windows Vista, and above, the

*** Info: SYSTEM account cannot setuid to other users -- a capability

*** Info: sshd requires. You need to have or to create a privileged

*** Info: account. This script will help you do so.

*** Info: You appear to be running Windows XP 64bit, Windows 2003 Server,

*** Info: or later. On these systems, it's not possible to use the LocalSystem

*** Info: account for services that can change the user id without an

*** Info: explicit password (such as passwordless logins [e.g. public key

*** Info: authentication] via sshd).

*** Info: If you want to enable that functionality, it's required to create

*** Info: a new account with special privileges (unless a similar account

*** Info: already exists). This account is then used to run these special

*** Info: servers.

*** Info: Note that creating a new user requires that the current account

*** Info: have Administrator privileges itself.

*** Info: No privileged account could be found.

*** Info: This script plans to use 'cyg_server'.

*** Info: 'cyg_server' will only be used by registered services.

*** Query: Do you want to use a different name? (yes/no) yes

*** Query: Enter the new user name: sony

*** Query: Reenter: sony

*** Warning: Privileged account 'sony' was specified,

*** Warning: but it does not have the necessary privileges.

*** Warning: Continuing, but will probably use a different account.

*** Warning: The specified account 'sony' does not have the

*** Warning: required permissions or group memberships. This may

*** Warning: cause problems if not corrected; continuing...

*** Query: Please enter the password for user 'sony':

*** Query: Reenter:

*** Info: The sshd service has been installed under the 'sony'

*** Info: account. To start the service now, call `net start sshd' or

*** Info: `cygrunsrv -S sshd'. Otherwise, it will start automatically

*** Info: after the next reboot.

*** Info: Host configuration finished. Have fun!

$ net start sshd
发生系统错误 1069 --- 表示由于登录失败而无法启动服务

解决方法：在cmd中输入services.msc即可打开windows的服务，在服务中把密码改对就可以了。
（在上面配置ssh的过程中我的用户名是：sony 密码是：123456）

sshd服务装成功如下：

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sony@sony-VAIO ~ $ net start sshd

CYGWIN sshd 服务正在启动 .

CYGWIN sshd 服务已经启动成功

接下来是配置无密码登陆：

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sony@sony-VAIO ~ $ ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/home/sony/.ssh/id_rsa):

Created directory '/home/sony/.ssh'.

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/sony/.ssh/id_rsa.

Your public key has been saved in /home/sony/.ssh/id_rsa.pub.

The key fingerprint is:

e8:38:5e:e3:bb:cf:76:03:61:5f:f2:68:ed:a3:49:db sony@sony-VAIO

The key's randomart image is:

+--[ RSA 2048]----+

| |

| |

| |

| .o . . |

| ..So * |

| o . + o |

| o + o.. |

| . + o..o+o |

| . +=o.+oE. |

+-----------------+

sony@sony-VAIO ~ $ cd .ssh/

sony@sony-VAIO ~/.ssh $ ls

id_rsa id_rsa.pub

sony@sony-VAIO ~/.ssh $ cp id_rsa.pub authorized_keys

sony@sony-VAIO ~/.ssh $ ls

authorized_keys id_rsa id_rsa.pub

验证如下：

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sony@sony-VAIO ~/.ssh $ ssh localhost

The authenticity of host 'localhost (::1)' can't be established.

ECDSA key fingerprint is 5f:21:b1:24:80:92:f6:af:3e:e3:a8:f9:cb:a4:4f:ec.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.

sony@sony-VAIO ~ $ who

sony tty0 2011-11-25 15:42 (::1)