# 配置远程登录
1. 执行以下命令更新apt服务。 
   ```
   sudo apt update #更新服务
   ```
   
   
2. 安装SSH服务并修改配置。 
   ```
   sudo apt update install openssh-server #安装ssh服务
   sed -i '/^PermitRootLogin/d' /etc/ssh/sshd_config
   sed -i '/^PasswordAuthentication/d' /etc/ssh/sshd_config
   sed -i '/^UseDNS/d' /etc/ssh/sshd_config
   sed -i '/^ChallengeResponseAuthentication/d' /etc/ssh/sshd_config
   sh -c 'echo "PermitRootLogin yes" >>/etc/ssh/sshd_config'
   sh -c 'echo "PasswordAuthentication yes" >>/etc/ssh/sshd_config'
   sh -c 'echo "UseDNS no" >>/etc/ssh/sshd_config'
   sh -c 'echo "ChallengeResponseAuthentication no" >>/etc/ssh/sshd_config'
   ```
   
   
3. 重启服务生效。 
   ```
   systemctl restart sshd  #重启服务生效
   ```