1.设置永久关闭防火墙vim/etc/selinux/config文件中的SELINUX=enforcing修改为SELINUX=disabled 2.修改SSH配置文件vim/etc/ssh/sshd_config UseDNSnoPubkeyAuthenticationyesPasswordAuthenticationyesPermitRootLoginyes 3.重启sshservicesshdrestart