关于AS5 SSH支持key认证的完全解决方案

（2）服务器端

为了server安全性考虑，禁止空密码与密码登录系统。

需修改/etc/ssh/sshd.conf

#PermitEmptyPasswords no      修改为         PermitEmptyPasswords no

PasswordAuthentication yes   =========    PasswordAuthentication no

[root@viong .ssh]# service sshd restart

需要重启ssh才能使配置生效

Stopping sshd:                                            [ OK ]

Starting sshd:                                             [ OK ]

[root@viong ~]# ssh localhost

The authenticity of host 'localhost (127.0.0.1)' can't be established.

RSA key fingerprint is 05:de:f8:d8:7b:db:36:0a:1e:01:cc:06:64:0e:7e:0a.

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

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

root@localhost's password: 输入系统密码

Last login: Tue Feb 23 00:32:06 2010 from 192.168.15.253

[root@viong ~]# cd ~/.ssh

利用RZ小工具上传刚刚客户端生成的Identity.pub到~/.ssh目录下

关于RZ 与SZ的安装请看http://viong.blog.51cto.com/844766/260081

[root@viong .ssh]#rz

上传Identity.pub

[root@viong .ssh]# cat Identity.pub >>authorized_keys

把公钥的内容输出到authorized_keys

[root@viong .ssh]# rm -rf Identity.pub

删除公钥

[root@viong .ssh]# chmod 400 authorized_keys

设置authorized_keys的权限为400

[root@viong .ssh]# ll

total 12

-r-------- 1 root root 608 Feb 23 02:38 authorized_keys

-rw-r--r-- 1 root root 391 Feb 23 02:34 known_hosts

重新连接服务器，提示密钥输入密码，说明设置成功了.

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客户端与服务器端都是linux系统基于RSA认证无私钥保护密码情况下

Client:192.168.15.50    server:192.168.15.64

Clinet：

[root@client .ssh]# pwd

/root/.ssh  如没这个目录，可以手动添加

[root@client .ssh]# ssh-keygen –t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/root/.ssh/id_rsa): 直接回车

Enter passphrase (empty for no passphrase): 直接回车

Enter same passphrase again: 直接回车

Your identification has been saved in viong.

Your public key has been saved inid_rsa .pub.

The key fingerprint is:

f9:14:16:7f:a8:68:f2:90:46:2e:28:b8:45:cc:aa:e9 root@client

[root@client .ssh]# ll

total 8

-rw------- 1 root root 1675 Feb 23 22:21 id_rsa

-rw-r--r-- 1 root root 393 Feb 23 22:21 id_rsa .pub

[root@client .ssh]# ssh-copy-id -i /root/.ssh/id_rsa .pub  root@192.168.15.64

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