Remote accessing is one of the most useful applications in Internet, and Telnet is the factual standard to realize it. It provides a standard interface for guests when they access a remote host that is Network Virtual Terminal Service.

• 远程登录是互连网上最常用的应用之一；而Telnet已经是Internet上实现远程登录的事实标准；它为客户访问一个远程主机提供一个标准接口；即网络虚拟终端服务.