ZyWALL 35 User's Guide
Figure 180 Common ZyWALL Certificate
22.5 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 181 SSH Communication Example
22.6 How SSH works
The following table summarizes how a secure connection is established between two remote
hosts.
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Chapter 22 Remote Management