ZyXEL Communications XGS1930-52HP - SSH Overview

Chapter 36 Access Control
XGS1930 Series User’s Guide
301
36.7.2 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 215 SSH Communication Example
36.7.2.1 How SSH works
The following table summarizes how a secure connection is established between two remote hosts.
Figure 216 How SSH Works