Ssh; How Ssh Works; Figure 215 Common Zywall Certificate; Figure 216 Ssh Communication Example - ZyXEL Communications 35 Series User Manual

ZyWALL 5/35/70 Series User's Guide

Figure 215 Common ZyWALL Certificate

27.5 SSH

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 216 SSH Communication Example

27.6 How SSH works

The following table summarizes how a secure connection is established between two remote
hosts.
441 Chapter 27 Remote Management