Figure 445 Ssh Communication Over The Wan Example; Figure 446 How Ssh V1 Works Example - ZyXEL Communications Unified Security Gateway ZyWALL 300 User Manual

Chapter 44 Service Control
44.6 SSH
You can use SSH (Secure SHell) to securely access the ZyWALL's command line interface.
Specify which zones allow SSH access and from which IP address the access can come.
SSH is a secure communication protocol that combines authentication and data encryption to
provide secure encrypted communication between two hosts over an unsecured network. In
the following figure, computer A on the Internet uses SSH to securely connect to the WAN
port of the ZyWALL for a management session.

Figure 445 SSH Communication Over the WAN Example

44.6.1 How SSH Works
The following figure is an example of how a secure connection is established between two
remote hosts using SSH v1.

Figure 446 How SSH v1 Works Example

1 Host Identification
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