ZyXEL Communications NWA3550 - Manual (Page 152)

Chapter 13 Remote Management Screens
NWA3550 User’s Guide
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13.1.2 System Timeout
There is a default system management idle timeout of five minutes (three hundred seconds).
The ZyXEL Device automatically logs you out if the management session remains idle for
longer than this timeout period. The management session does not time out when a statistics
screen is polling. You can change the timeout period in the System screen
13.2 SSH
You can use SSH (Secure SHell) to securely access the ZyXEL Device’s SMT or command
line interface. Specify which interfaces allow SSH access and from which IP address the
access can come.
Unlike Telnet or FTP, which transmit data in plaintext (clear or unencrypted text), SSH is a
secure communication protocol that combines authentication and data encryption to provide
secure encrypted communication between two hosts over an unsecured network.
13.3 How SSH Works
The following table summarizes how a secure connection is established between two remote
hosts.
Figure 85 How SSH Works
1 Host Identification