Good Habits For Managing The Sbg - ZyXEL Communications SBG5500-A User Manual

1.3 Good Habits for Managing the SBG

Do the following things regularly to make the SBG more secure and to manage the SBG 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. The password must have 6-64 printable characters [0-9][a-z]
[A-Z][!@#$%*].
• 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 SBG to its factory default settings. If you backed up an earlier
configuration file, you would not have to totally re-configure the SBG. You could simply restore your
last configuration.
1.4 Applications for the SBG
Here are some example uses for which the SBG is well suited.
1.4.1 Internet Access
As a small business gateway your SBG has multiple WAN interfaces, including, 3G/4G, DSL, fiber and
Gigabit Ethernet to share the network traffic load. You can configure multiple WAN load balance and
failover rules to distribute traffic amongst the different interfaces.
If you have DSL Internet service, connect the DSL port to the DSL or modem jack on a splitter or your
telephone jack. You can also have multiple WAN services over one ADSL or VDSL. The SBG cannot work
in ADSL and VDSL mode at the same time.
If you prefer not to use a DSL line or you already have a broadband modem/router in your network, use
the Ethernet WAN or SFP port. The SFP and GbE ports work as a Combo port, which means there are two
physical ports in the SBG, but they share a same port number and GbE works as a backup for the SFP
port if both are connected. You can also use a 3G/4G dongle for cellular backup WAN (Internet)
connections.
Note: If you connect all WAN ports the priority order will be DSL, Combo, and USB port.
Note: The ADSL and VDSL lines share the same WAN (layer-2) interfaces that you configure in
the SBG. Refer to
Setup screen.
Chapter 1 Introducing the SBG
Section 5.3 on page 56
SBG5500 Series User's Guide
14
for the Configuration > WAN / Internet > WAN