Справочник Пользователя для ZyXEL Communications 5 Series

 Chapter 27 Remote Management Screens

ZyWALL 5/35/70 Series User’s Guide

You can use SSH (Secure SHell) to securely access the ZyWALL’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. 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 305   SSH Communication Over the WAN Example 

Your ZyWALL supports SSH version 1.5 using RSA authentication and three encryption 
methods (DES, 3DES and Blowfish). The SSH server is implemented on the ZyWALL for 
remote SMT management and file transfer on port 22. Only one SSH connection is allowed at 
a time.

You must install an SSH client program on a client computer (Windows or Linux operating 
system) that is used to connect to the ZyWALL over SSH.

Click ADVANCED > REMOTE MGMT > SSH to change your ZyWALL’s Secure Shell 
settings. 

Server Access

Select the interface(s) through which a computer may access the ZyWALL using 
this service.

Secure Client IP 
Address

A secure client is a “trusted” computer that is allowed to communicate with the 
ZyWALL using this service. 
Select All to allow any computer to access the ZyWALL using this service.
Choose Selected to just allow the computer with the IP address that you specify to 
access the ZyWALL using this service.

Apply

Click Apply to save your customized settings and exit this screen. 

Reset

Click Reset to begin configuring this screen afresh.

Table 149   ADVANCED > REMOTE MGMT > WWW (continued)