摘要： ＳＳＨ是在不安全的网络上提供安全的远程登录和其他网络服务的协议。本文描述了监听与反监听原理，ＳＳＨ协议的体系结构。该文还介绍了ＳＳＨ协议的三个主要组成部分：传输层协议，用户认证协议，以及加密隧道多路复用的连接协议。最后以校园网各种服务为例讨论ＳＳＨ协议的具体应用。

关键词: SSH, 监听, 加密, 安全

Abstract: SSH is a Protocol for secure remote login and other secure network services over an insecure network. This document deseribes the theory of sniffer and antisniffer, the architecture of the SSH protocol. It also introduces the SSH protocol's three major components: Transport layer protocol. user authentication protocol. and connection protocol multiplexes the encrypted tunnel into several logical channels. At last it will discusses SSH protocol's specific application with campus network services.

中图分类号: 

• TP393.08