第九单元

1.在desktop主机中建立用户westos，并设定其密码为westoslinux

[root@localhost Desktop]# useradd westos     ####创建用户westos######

[root@localhost Desktop]# passwd westos      #####设置新密码#####

Changing password for user westos.              

New password:                                ####输入密码#####

BAD PASSWORD: The password contains the user name in some form

Retype new password:                        #######再次输入######    

passwd: all authentication tokens updated successfully.   ####设置成功########

2.配置desktop中的sshd服务要求如下：

*）设定sshd服务只允许westos用户可以被访问使用

[root@localhost Desktop]# vim /etc/ssh/sshd_config           ####打开ssh配置文件，设定访问限制

[root@localhost Desktop]# systemctl restart sshd.service    ######！！！！！重启ssh服务刷新设置

*）创建westos用户的key认证方式

[root@localhost Desktop]# ssh-keygen                        ######生成公钥

[root@server Desktop]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@172.25.254.100    #####发送钥匙到主机

*）设定westos用户只允许使用key认证方式，屏蔽其系统密码认证方式

[root@localhost ~]# vim /etc/ssh/sshd_config                  ####修改内容如下

[root@localhost ~]# systemctl restart sshd.service

第九单元