MsnShell 1.0 ，一种隐藏通道工具，外网的计算机可以避开防火墙的严格数据审查，远程控制一台内网计算机。它把Shell命令/响应隐蔽地封装在MSN协议中传送出去。必要时还可以将MSN协议包封装在HTTP协议中传送出去。它无需安装客户端，只由一个可执行程序组成服务端。-MsnShell 1.0, a hidden channel tools, a computer outside the network firewall can avoid the strict review of the data, remote control units within a computer network. Shell put its command / response to the package hidden in the MSN agreement away from the epicenter. When necessary, MSN protocol packets encapsulated in HTTP agreement away from the epicenter. It is not necessary to install the client, only an executable from the server component.