VPN over SSH

How It Works

                            ///
+----------------------+    ///    +----------------------+
|        RPI           |    ///    |        VPS           |
|----------------------|----SSH--->|----------------------|
| eth0: 192.168.31.222 |    ///    | eth0: 1.2.3.4        |
| tun0: 10.0.0.200     |    ///    | tun0: 10.0.0.100     |
+----------------------+    ///    +----------------------+
                            ///

• RPI (树莓派-客户端)

  • 使用境外DNS服务器
  • 使用eth0, 禁用wlan0
  • 配置ssh无密码root登录

• VPS (云主机-服务端)

  • 使用境外VPS服务器
  • 启用内核IP数据包转发
  • 配置防火墙NAT地址转换

References

• http://man.openbsd.org/ssh
• https://help.ubuntu.com/community/SSH_VPN
• http://bodhizazen.net/Tutorials/VPN-Over-SSH