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1.安装openssh-server
sudo apt-get install -y openssh-server
2.修改/etc/ssh/sshd-config配置
PermitRootLogin no修改为yes PubkeyAuthentication yes修改为no AuthorizedKeysFile .ssh/authorized_keys 去掉注释 PasswordAuthentication no修改为yes
3.开启防火墙的22端口
ufw allow 22/tcp
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原文地址:http://www.cnblogs.com/tiger2soft/p/5771405.html