vsftp 修改登陆密码

首先在client上建立public Key和private key,需要使用ssh-keygen命令

[root@localhost .ssh]# ssh-keygen –t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase): 按enter
Enter same passphrase again: 按enter
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
e8:8a:5e:ae:c7:13:45:d0:81:cd:3f:e6:1e:f8:88:5a
root@localhost.localdomain

2. 然后将Private Key 放在client上的宿主目录，一般放在/root/.ssh/目录中
并修改权限为user可读
3 最后，将Public Key 放在任何一个您想登陆主机server中的某user的宿主目录
下的.ssh/子目录人证文档中即可。
4 现在192.168.0.6是client 想连接到192.168.0.8上用ssh-keygen –t rsa产生key
(-t参数是使用和种密码)这时在我的/root/.ssh/里边产生了三个文档分别是公钥
(id_rsa.pub)和私钥(id_rsa)另