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Page 17 / 150
VMG4381-B10A User’s Guide
17
C
HAPTER
1
Introducing the Device
1.1
Overview
The Device is a wireless VDSL router and Gigabit Ethernet gateway. It has two DSL ports and
Gigabit Ethernet for super-fast Internet access over analog (POTS) telephone lines. If the DSLAM of
the ISP supports bonding function, the two DSL ports on the Device can be connected to two
separate telephone jacks to provide increased throughput at longer distances. The Device supports
both Packet Transfer Mode (PTM) and Asynchronous Transfer Mode (ATM). It is backward
compatible with ADSL, ADSL2 and ADSL2+ in case VDSL is not available. The Device also provides
IEEE 802.11b/g/n wireless networking to extend the range of your existing wired network without
additional wiring. The VMG438
1
0
-B10A model
s
also include Home Phoneline
• VMG438
1
0
-B10A has Home Phoneline Networking Alliance (HPNA)
and Multimedia over Coax
Alliance (moCA)
capabilit
ies
y
.
Only use firmware for your Device’s specific model. Refer to the label on
the bottom of your Device.
The Device has a USB port used to share files via a USB memory stick or a USB hard drive.
1.2
Ways to Manage the Device
Use any of the following methods to manage the Device.
•
Web Configurator. This is recommended for everyday management of the Device using a
(supported) web browser.
•
TR-069. This is an auto-configuration server used to remotely configure your device.
1.3
Good Habits for Managing the Device
Do the following things regularly to make the Device more secure and to manage the 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.
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Chapter 1 Introducing the Device
VMG4381-B10A User’s Guide
18
•
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 Device to its factory default settings. If you
backed up an earlier configuration file, you would not have to totally re-configure the Device. You
could simply restore your last configuration.
1.4
Applications for the Device
Here are some example uses for which the Device is well suited.
1.4.1
Internet Access
Your Device provides shared Internet access by connecting the DSL port to the
DSL
or
MODEM
jack on a splitter or your telephone jack. You can have multiple WAN services over one ADSL or
VDSL. The Device cannot work in ADSL and VDSL mode at the same time.
Note: The ADSL and VDSL lines share the same WAN (layer-2) interfaces that you
configure in the Device. Refer to
Section 6.2 on page 79
for the
Network Setting
> Broadband
screen.
Computers can connect to the Device’s LAN ports (or wirelessly).
Figure 1
Device’s Internet Access Application
You can also configure IP filtering on the Device for secure Internet access. When the IP filter is on,
all incoming traffic from the Internet to your network is blocked by default unless it is initiated from
ADSL / VDSL
WLAN
PPPoE
IPoE
Bridging
WAN
ADSL
IPoA
WAN
LAN
LAN
WLAN
A
A
PPPoA
IPoE
PPPoE
Bridging
Page 19 / 150
Chapter 1 Introducing the Device
VMG4381-B10A User’s Guide
19
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.
1.4.2
HomePNA
Models with HPNA comply with HomePNA (Home Phoneline Networking Alliance, also known as
HPNA) 3.1, a home networking technology for carrying data over existing coaxial cables and
telephone wiring.
The figure below shows your Device (
A
) connecting to a phone line outlet for DSL Internet access
and a coaxial outlet to relay Internet connectivity to other coaxial outlets in the building. The laptop
(
B
) connects wirelessly to the Device. The set-up box (
C
) connects into a coaxial outlet in another
part of the house for access to online videos.
Figure 2
HomePNA Application
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Chapter 1 Introducing the Device
VMG4381-B10A User’s Guide
20
1.4.3
Device’s USB Support
The USB port of the Device is used for file-sharing.
File Sharing
Use the built-in USB 2.0 port to share files on a USB memory stick or a USB hard drive (
B
). You can
connect one USB hard drive to the Device at a time. Use FTP to access the files on the USB device.
Figure 3
USB File Sharing Application
Media Server
You can also use the Device as a media server. This lets anyone on your network play video, music,
and photos from a USB device (
B
) connected to the Device’s USB port (without having to copy them
to another computer).
Figure 4
USB Media Server Application
B
A
B
A

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