ZyXEL Communications NBG420N Manual Do Utilizador

 Chapter 1 Getting to Know Your NBG420N

NBG420N User’s Guide

Use any of the following methods to manage the NBG420N.

• Web Configurator. This is recommended for everyday management of the NBG420N 

using a (supported) web browser. 

• Command Line Interface. Line commands are mostly used for troubleshooting by service 

engineers.  

• FTP. Use File Transfer Protocol for firmware upgrades and configuration backup/restore.

Do the following things regularly to make the NBG420N more secure and to manage the 
NBG420N more effectively.

• Change the password. Use a password that’s not easy to guess and that consists of 

different types of characters, such as numbers and letters.

• Write down the password and put it in a safe place.
• Back up the configuration (and make sure you know how to restore it). Restoring an 

earlier working configuration may be useful if the device becomes unstable or even 
crashes. If you forget your password, you will have to reset the NBG420N to its factory 
default settings. If you backed up an earlier configuration file, you would not have to 
totally re-configure the NBG420N. You could simply restore your last configuration.

Figure 3   Front Panel

The following table describes the LEDs.

Table 2   Front Panel LEDs

POWER

Green

On

The NBG420N is receiving power and functioning 

properly. 

Off

The NBG420N is not receiving power.