Ssh Overview; How Ssh Works; Figure 183 Common Zywall Certificate; Figure 184 Ssh Communication Example - ZyXEL Communications ZyWall 35 User Manual

ZyWALL 35 User's Guide

Figure 183 Common ZyWALL Certificate

21.5 SSH Overview

Unlike Telnet or FTP, which transmit data in clear text, SSH (Secure Shell) is a secure
communication protocol that combines authentication and data encryption to provide secure
encrypted communication
between two hosts over an unsecured network.

Figure 184 SSH Communication Example

21.6 How SSH works

The following table summarizes how a secure connection is established between two remote
hosts.
360 Chapter 21 Remote Management