ZyXEL Communications NXC8160 User Manual
Chapter 4 Centralized Configuration
NXC-8160 User’s Guide
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1 Host Identification
The SSH client sends a connection request to the SSH server. The server identifies itself
with a host key. The client encrypts a randomly generated session key with the host key
and server key and sends the result back to the server.
The client automatically saves any new server public keys. In subsequent connections,
the server public key is checked against the saved version on the client computer.
with a host key. The client encrypts a randomly generated session key with the host key
and server key and sends the result back to the server.
The client automatically saves any new server public keys. In subsequent connections,
the server public key is checked against the saved version on the client computer.
2 Encryption Method
Once the identification is verified, both the client and server must agree on the type of
encryption method to use.
encryption method to use.
3 Authentication and Data Transmission
After the identification is verified and data encryption activated, a secure tunnel is
established between the client and the server. The client then sends its authentication
information (user name and password) to the server to log in to the server.
established between the client and the server. The client then sends its authentication
information (user name and password) to the server to log in to the server.
4.4 SSH Implementation on the NXC-8160
Your NXC-8160 supports SSH version 1 and 2 using RSA authentication and three encryption
methods (DES, 3DES and Blowfish). The SSH server is implemented on the NXC-8160 for
management and file transfer on port 22.
methods (DES, 3DES and Blowfish). The SSH server is implemented on the NXC-8160 for
management and file transfer on port 22.
4.4.1 Requirements for Using SSH
You must install an SSH client program on a client computer (Windows or Linux operating
system) that is used to connect to the NXC-8160 over SSH.
system) that is used to connect to the NXC-8160 over SSH.
4.5 Centralized Configuration Screen
Click Centralized Configuration to display the screen as shown next. Use this screen to set
each NXC-8160 as a master or member controller. The screen changes depending on whether
you select the Master Controller check box.
By default, the Master Controller check box is not selected and the NXC-8160 acts as a
member controller.
each NXC-8160 as a master or member controller. The screen changes depending on whether
you select the Master Controller check box.
By default, the Master Controller check box is not selected and the NXC-8160 acts as a
member controller.
Figure 13 Centralized Configuration (Member)