ZyXEL Communications P-660R-11V3 User Manual

Chapter 1 Introducing the ZyXEL Device

P-660R-T1 v3 User’s Guide

Do the following things regularly to make the ZyXEL Device more secure and to manage the 
ZyXEL Device 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 ZyXEL Device to its 
factory default settings. If you backed up an earlier configuration file, you would not have 
to totally re-configure the ZyXEL Device. You could simply restore your last 
configuration.

Here are some example uses for which the ZyXEL Device is well suited.

Your ZyXEL Device provides shared Internet access by connecting the DSL port to the DSL 
or MODEM jack on a splitter or your telephone jack. Computers can connect to the ZyXEL 
Device’s LAN ports.

Figure 1   ZyXEL Device’s Router Features

You can also configure firewall and content filtering on the ZyXEL Device for secure Internet 
access. When the firewall is on, all incoming traffic from the Internet to your network is 
blocked unless it is initiated from your network. This means that probes from the outside to 
your network are not allowed, but you can safely browse the Internet and download files.
Use content filtering to block access to specific web sites, with URL’s containing keywords 
that you specify. For example, you could block access to certain web sites for the kids.

DSL