ssh原理及应用

远程登陆

密码登陆

ssh host
ssh user@host
ssh -p 2222 user@host

公钥登陆

生成公私钥:

ssh-kengen 
    -> ~/.ssh/{id_rsa.pub,id_rsa}

将公钥传送到远程主机:

ssh-copy-id user@host

或

ssh user@host 'mkdir -p .ssh && cat >> .ssh/authorized_keys' < ~/.ssh/id_rsa.pub

远程主机配置：

vi /etc/ssh/sshd_config

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys

/etc/init.d/sshd restart

参考资料

SSH原理与运用（一）：远程登录