/etc/ssh/sshd_config的 PasswordAuthentication PermitRootLogin ClientAliveCountMax ClientAliveInterval
与远程登陆相关PasswordAuthentication,PermitRootLogin#PasswordAuthenticationyes这个选项允许远程登陆用密码来认证,但加了#号,不会起作用将前面的#去掉,变为PasswordAuthenticationyes可以允许远程用密码登录认证#PermitRootLoginprohibit-password设为PermitRootLoginyes