让Windows可以远程访问Linux系统桌面
http://jingyan.baidu.com/article/d8072ac47b810eec95cefde8.html
linux系统下，11款常见远程桌面控…
http://blog.csdn.net/guo8113/article/details/29211235
Xmanager连接CentOS的远程桌面
http://www.linuxidc.com/Linux/2015-08/122356.htm
xmanager被动模式连接服务端
https://birdteam.net/2016/06/xmanager-passive-mode-connection-server.html