切换到root用户

#更新软件源

apt-get update

安装ssh

apt-get install ssh

备份ssh的配置文件

cp /etc/ssh/sshd_config{,.bak}

修改配置文件如下

root@localhost:~# more /etc/ssh/sshd_config| grep -v  "^#"  |grep -v "^$"
Include /etc/ssh/sshd_config.d/*.conf
Port 22
PermitRootLogin prohibit-password
PasswordAuthentication yes
PermitEmptyPasswords no
ChallengeResponseAuthentication no
UsePAM yes
X11Forwarding yes
PrintMotd no
AcceptEnv LANG LC_*
Subsystem	sftp	/usr/lib/openssh/sftp-server

注释 grep -v “^#” |grep -v “^$” 去空格和#开头

启动ssh

service sshd start
service ssh status

添加开机启动

update-rc.d ssh enable

移除启动

update-rc.d ssh remove

查看添加的启动程序

ll /etc/rc2.d