ssh禁止root用户登录

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

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root用户无法登录,普通用户可以登录