查看ssh服务是否安装
[root@localhost ~]# rpm -qa |grep -E '(ssh.*server|server.*ssh)'
openssh-server-5.3p1-70.el6.i686
查看配置文件
[root@localhost ~]# rpm -qc openssh-server
/etc/pam.d/ssh-keycat
/etc/pam.d/sshd
/etc/ssh/sshd_config
/etc/sysconfig/sshd
man手册查看禁止root登录的选项
[root@localhost ~]# man /etc/ssh/sshd_config
[root@localhost ~]# vim /etc/ssh/sshd_config
PermitRootLogin no
验证
[10:22:20 talen@BJB0300 ~ ]$ ssh -l root 192.168.74.129
root@192.168.74.129's password:
Permission denied, please try again.
root@192.168.74.129's password:
[10:22:48 talen@BJB0300 ~ ]$ ssh -l talen 192.168.74.129
talen@192.168.74.129's password:
[talen@localhost ~]$ ls
Desktop Documents Downloads Music Pictures Public Templates Videos
root用户无法登录,普通用户可以登录
