While reading through the User Guide you may see
various icons that call attention to specific items. Below is
a description of these icons:
NOTE: This check mark indicates that there is
a note of interest and is something that you
should pay special attention to while using the
product.
WARNING: This exclamation point indicates
that there is a caution or warning and it is
something that could damage your property or
product.
About This Guide
WEB: This globe icon indicates a noteworthy
website address or e-mail address.
Online Resources
Website addresses in this document are listed without
http:// in front of the address because most current web
browsers do not require it. If you use an older web browser,
you may have to add http:// in front of the web address.
ResourceWebsite
Linksyswww.linksys.com
Linksys International www.linksys.com/international
Thank you for choosing the Linksys Wireless-G ADSL2+
IAD Gateway. IAD stands for Integrated Access Device.
The Gateway lets you access the Internet via a wireless
connection or through one of its four switched ports. It also
connects to a traditional phone line, the Public Switched
Telephone Network (PSTN), so you can make calls using
the traditional service or Voice over IP (VoIP).
You can also use the Gateway to share resources such as
computers, printers and files. A variety of security features
help to protect your data and your privacy while online.
Security features include WPA2 security, a Stateful Packet
Inspection (SPI) firewall and NAT technology. Configuring
the Gateway is easy using the provided browser-based
utility.
Front Panel
Security (Green/Red) The Security LED lights
up when wireless security is enabled. It flashes
during the Wi-Fi Protected Setup process. The
LED becomes red when wireless security is
disabled.
USB Green. The USB LED lights up when the
Gateway is connected to a device through the
USB port. It flashes to indicate USB activity.
Phone 1-2 (Green) The Phone 1 or 2 LED
lights up when a phone is connected to the
corresponding port on the Gateway’s back
panel. It flashes when the phone is being used.
Line (Green) The Line LED lights up when the
Gateway is connected to the Public Switched
Telephone Network (PSTN) through the Line
port. It flashes when the phone line is in use.
DSL (Green) The DSL LED lights up when there
is a DSL connection. It flashes when the Gateway
is establishing the ADSL connection.
Internet (Green/Red) The Internet LED lights
up when the Gateway is connected to the
Internet. It flashes to indicate network activity
over the Internet port. The LED becomes red
when the Internet connection fails.
Power (Green/Red) The Power LED lights up
when the Gateway is powered on. It flashes
during the self-test. The LED becomes red
during a malfunction.
Ethernet 1-4 (Green) These numbered LEDs,
corresponding with the numbered Ethernet
ports on the Gateway’s back panel, serve two
purposes. If the LED is continuously lit, the
Gateway is connected to a device through that
port. It flashes to indicate network activity over
that port.
WAN/LAN 5 (Green) The WAN/LAN 5 LED
corresponds with the WAN/LAN5 port and
serves two purposes. If the LED is continuously
lit, the Gateway is successfully connected to a
device through that port. It flashes to indicate
network activity over that port.
Traffic (Green) The Traffic LED lights up when
the wireless feature is enabled. It flashes when
the Gateway is sending or receiving data over
the wireless network.
Top Panel
Wireless-G ADSL2+ IAD Gateway
4
Chapter 1
Product Overview
Wi-Fi Protected Setup If you have client
devices, such as a wireless adapter, that supports
Wi-Fi Protected Setup, then you can use Wi-Fi
Protected Setup to automatically configure
wireless security for your wireless network(s).
If your client device has a Wi-Fi Protected Setup
button, click or press that button. Then click the
Wi-Fi Protected Setup button on the Gateway’s
top panel.
If your client device asks for the Gateway’s PIN
number, enter this number: 88888888 on your
client device.
The Wi-Fi Protected Setup process is automatic.
Back Panel
Reset There are two ways to reset the Gateway’s
factory defaults. Either press and hold the Reset
button for approximately five seconds, or restore
the defaults from the Administration > Factory Defaults screen of the Gateway’s web-based
utility.
NOTE: To safely wall mount this unit,
the side panel with antenna must face
upward.
NOTE: You can also use the Wi-Fi
Protected Setup feature through
the Wireless > Basic Wireless Settings
screen of the Gateway’s web-based
utility.
DSL The DSL port connects to the ADSL line.
Line The Line port connects to the Public
Switch Telephone Network (PSTN).
Phone 1-2 The Phone ports connect standard
analog telephones to the Gateway.
USB The USB port connects to a USB device.
Ethernet WAN/LAN5 The WAN/LAN5 port can
act as a WAN (Internet) or LAN (local network)
port. As a WAN port, it connects to a broadband
modem. As a LAN port, it connects to a wired
computer or other Ethernet network device.
Ethernet LAN 1-4 These Ethernet ports (1, 2,
3, 4) connect the Gateway to wired computers
and other Ethernet network devices.
Power Switch Use this switch to power on or
off the Gateway.
Power The Power port is where you will
connect the power adapter.
Wireless-G ADSL2+ IAD Gateway
5
Chapter 2
Wireless Security Checklist
Chapter 2:
Wireless Security Checklist
Wireless networks are convenient and easy to install, so
homes with high-speed Internet access are adopting them
at a rapid pace. Because wireless networking operates by
sending information over radio waves, it can be more
vulnerable to intruders than a traditional wired network.
Like signals from your cellular or cordless phones, signals
from your wireless network can also be intercepted. Since
you cannot physically prevent someone from connecting
to your wireless network, you need to take some additional
steps to keep your network secure.
1. Change the default wireless
network name or SSID
Wireless devices have a default wireless network name
or Service Set Identifier (SSID) set by the factory. This
is the name of your wireless network, and can be up
to 32 characters in length. Linksys wireless products
use linksys as the default wireless network name. You
should change the wireless network name to something
unique to distinguish your wireless network from other
wireless networks that may exist around you, but do not
use personal information (such as your Social Security
number) because this information may be available for
anyone to see when browsing for wireless networks.
2. Change the default password
For wireless products such as access points, routers, and
gateways, you will be asked for a password when you
want to change their settings. These devices have a default
password set by the factory. The Linksys default password
is admin. Hackers know these defaults and may try to
use them to access your wireless device and change your
network settings. To thwart any unauthorized changes,
customize the device’s password so it will be hard to
guess.
4. Enable encryption
Encryption protects data transmitted over a wireless
network. Wi-Fi Protected Access (WPA/WPA2) and Wired
Equivalency Privacy (WEP) offer different levels of security
for wireless communication.
A network encrypted with WPA/WPA2 is more secure
than a network encrypted with WEP, because WPA/WPA2
uses dynamic key encryption. To protect the information
as it passes over the airwaves, you should enable the
highest level of encryption supported by your network
equipment.
WEP is an older encryption standard and may be the
only option available on some older devices that do not
support WPA.
General Network Security Guidelines
Wireless network security is useless if the underlying
network is not secure.
Password protect all computers on the network and
•
individually password protect sensitive files.
Change passwords on a regular basis.
•
Install anti-virus software and personal firewall
•
software.
Disable file sharing (peer-to-peer). Some applications
•
may open file sharing without your consent and/or
knowledge.
Additional Security Tips
Keep wireless routers, access points, or gateways away
•
from exterior walls and windows.
Turn wireless routers, access points, or gateways
•
off when they are not being used (at night, during
vacations).
Use strong passphrases that are at least eight characters
•
in length. Combine letters and numbers to avoid using
standard words that can be found in the dictionary.
3. Enable MAC address filtering
Linksys routers and gateways give you the ability to
enable Media Access Control (MAC) address filtering. The
MAC address is a unique series of numbers and letters
assigned to every networking device. With MAC address
filtering enabled, wireless network access is provided
solely for wireless devices with specific MAC addresses.
For example, you can specify the MAC address of each
computer in your home so that only those computers can
access your wireless network.
Wireless-G ADSL2+ IAD Gateway
WEB: For more information on wireless
security, visit www.linksys.com/security
6
Chapter 3
Chapter 3:
Advanced Configuration
After setting up the Gateway with the Setup Wizard
(located on the CD-ROM), the Gateway will be ready
for use. However, if you’d like to change its advanced
settings, use the Gateway’s web-based utility. This chapter
describes each web page of the utility and each page’s key
functions. You can access the utility via a web browser on
a computer connected to the Gateway.
The web-based utility has these main tabs: Setup,
Wireless, Security, Access Restrictions, Applications &
Gaming, Administration, and Status. Additional tabs will
be available after you click one of the main tabs.
NOTE: When first installing the Gateway, you
should use the Setup Wizard on the Setup CDROM. If you want to configure advanced settings,
use this chapter.
Advanced Configuration
How to Access the Web-Based Utility
To access the web-based utility, launch the web browser
on your computer, and enter the Gateway’s default IP
address, 192.168.1.1, in the Address field. Then, press
Enter.
A login screen appears. The first time you open the webbased utility, use the default user name and password,
admin. (You can set a new user name and password from
the Administration tab’s Management screen.) Click OK to
continue.
Login Screen
Setup > Basic Setup
Setup > Basic Setup
Internet Setup
The Internet Setup section configures the Gateway to
your Internet connection. Most of this information can be
obtained through your ISP.
Internet Connection Type
The Gateway supports six encapsulation methods. Select
the appropriate type of encapsulation from the dropdown menu. Each Basic Setup screen and available features
will differ depending on what type of encapsulation you
select. These are the available types:
RFC 2364 PPPoA
•
RFC 2516 PPPoE
•
RFC 1483 Routed
•
The first screen that appears is the Basic Setup screen. This
allows you to change the Gateway’s general settings.
Wireless-G ADSL2+ IAD Gateway
IPoA
•
RFC 1483 Bridged
•
Bridge Mode Only
•
VC Settings
Configure your Virtual Circuit (VC) settings in this section.
Multiplexing Select LLC or VC, depending on your ISP.
7
Chapter 3
Advanced Configuration
QoS Type Select from the drop-down menu: CBR
(Continuous Bit Rate) to specify fixed bandwidth for voice
or data traffic; UBR (Unspecific Bit Rate) for application that
are not time-sensitive, such as e-mail; or VBR (Variable Bit
Rate) for bursty traffic and bandwidth-sharing with other
applications.
Pcr Rate For the Peak Cell Rate (PCR), divide the DSL line
rate by 424 to get the maximum rate the sender can send
cells. Enter the rate in the field (if required by your service
provider).
Scr Rate The Sustain Cell Rate (SCR) sets the average cell
rate that can be transmitted. The SCR value is normally less
than the PCR value. Enter the rate in the field (if required
by your service provider).
Autodetect Select Enable to have the settings
automatically entered, or select Disable to enter the
values manually.
Virtual Circuit These fields consist of two items: VPI
(Virtual Path Identifier) and VCI (Virtual Channel Identifier).
Enter the settings provided by your ISP.
DSL Modulation Select the appropriate mode:
MultiMode, T1.413, G.dmt, G.lite, ADSL2, or ADSL2+.
Contact your ISP if you are not sure which mode to use.
inactivity, Connect on Demand enables the Gateway to
automatically re-establish your connection as soon as you
attempt to access the Internet again. To use this option,
select Connect on Demand. In the Max Idle Time field,
enter the number of minutes you want to have elapsed
before your Internet connection terminates. The default
Max Idle Time is 5 minutes.
Keep Alive: Redial Period If you select this option,
the Gateway will periodically check your Internet
connection. If you are disconnected, then the Gateway
will automatically re-establish your connection. To use
this option, select Keep Alive. In the Redial Period field,
you specify how often you want the Gateway to check
the Internet connection. The default Redial Period is
30 seconds.
RFC 2516 PPPoE
Some DSL-based ISPs use PPPoE (Point-to-Point Protocol
over Ethernet) to establish Internet connections. If you are
connected to the Internet through a DSL line, check with
your ISP to see if they use PPPoE. If they do, you will have
to enable PPPoE.
Follow the instructions for your type of encapsulation.
RFC 2364 PPPoA
Some DSL-based ISPs use PPPoA (Point-to-Point Protocol
over ATM) to establish Internet connections. If you are
connected to the Internet through a DSL line, check with
your ISP to see if they use PPPoA. If they do, you will have
to enable PPPoA.
Internet Connection Type > RFC 2364 PPPoA
PPPoA Settings
Username and Password Enter the Username and
Password provided by your ISP.
Connect on Demand: Max Idle Time You can configure
the Gateway to cut the Internet connection after it has
been inactive for a specified period of time (Max Idle Time).
If your Internet connection has been terminated due to
Internet Connection Type > RFC 2516 PPPoE
PPPoE Settings
Username and Password Enter the Username and
Password provided by your ISP.
Connect on Demand: Max Idle Time You can configure
the Gateway to cut the Internet connection after it has
been inactive for a specified period of time (Max Idle Time).
If your Internet connection has been terminated due to
inactivity, Connect on Demand enables the Gateway to
automatically re-establish your connection as soon as you
attempt to access the Internet again. To use this option,
select Connect on Demand. In the Max Idle Time field,
enter the number of minutes you want to have elapsed
before your Internet connection terminates. The default
Max Idle Time is 5 minutes.
Keep Alive: Redial Period If you select this option,
the Gateway will periodically check your Internet
connection. If you are disconnected, then the Gateway
Wireless-G ADSL2+ IAD Gateway
8
Chapter 3
Advanced Configuration
will automatically re-establish your connection. To use
this option, select Keep Alive. In the Redial Period field,
you specify how often you want the Gateway to check
the Internet connection. The default Redial Period is
30 seconds.
RFC 1483 Routed
If you are required to use RFC 1483 Routed, then select
RFC 1483 Routed.
Internet Connection Type > RFC 1483 Routed
IP Settings
Your ISP provides these settings.
Internet IP Address Enter the Gateway’s IP address, as
seen from the Internet.
Subnet Mask Enter the Gateway’s Subnet Mask, as seen
from the Internet (including your ISP).
Default Gateway Enter the IP address of the ISP server.
Primary (Required) and Secondary (Optional)
DNS Enter the DNS (Domain Name System) server IP
address(es) provided by your ISP. At least one is required.
RFC 1483 Bridged
If you are required to use RFC 1483 Bridged, then select
RFC 1483 Bridged.
IP Settings
Your ISP provides these settings.
Internet IP Address Enter the Gateway’s IP address, as
seen from the Internet.
Subnet Mask Enter the Gateway’s Subnet Mask, as seen
from the Internet (including your ISP).
Default Gateway Enter the IP address of the ISP server.
Primary (Required) and Secondary (Optional)
DNS Enter the DNS (Domain Name System) server IP
address(es) provided by your ISP. At least one is required.
IPoA
If you are required to use IPoA (IP over ATM), then select
IPoA.
Internet Connection Type > RFC 1483 Bridged
IP Settings
Select Obtain an IP Address Automatically if your ISP
says you are connecting through a dynamic IP address.
If you are required to use a permanent (static) IP address
to connect to the Internet, then select Use the following IP Address. Your ISP provides the settings needed for the
following fields:
Internet IP Address Enter the Gateway’s IP address, as
seen from the Internet.
Subnet Mask Enter the Gateway’s Subnet Mask, as seen
from the Internet (including your ISP).
Default Gateway Enter the IP address of the ISP server.
Primary (Required) and Secondary (Optional)
DNS Enter the DNS (Domain Name System) server IP
address(es) provided by your ISP. At least one is required.
Internet Connection Type > IPoA
Wireless-G ADSL2+ IAD Gateway
Bridge Mode Only
If you are using your Gateway as a bridge, which makes
the Gateway act like a stand-alone modem, select Bridge
9
Chapter 3
Advanced Configuration
Mode Only. All NAT and routing settings are disabled in
this mode.
Internet Connection Type > Bridge Mode Only
Optional Settings
Some of these settings may be required by your ISP. Verify
with your ISP before making any changes.
Optional Settings
Host Name and Domain Name These fields allow you
to supply a host and domain name for the Gateway.
Some ISPs, usually cable ISPs, require these names as
identification. You may have to check with your ISP to see
if your broadband Internet service has been configured
with a host and domain name. In most cases, leaving these
fields blank will work.
MTU MTU is the Maximum Transmission Unit. It specifies
the largest packet size permitted for Internet transmission.
Select Manual if you want to manually enter the largest
packet size that is transmitted. To have the Gateway select
the best MTU for your Internet connection, keep the
default, Auto.
Size When Manual is selected in the MTU field, this option
is enabled. Leave this value in the 1200 to 1500 range. The
default, MTU is configured automatically.
Network Setup
The Network Setup section changes the settings on the
network connected to the Gateway’s Ethernet ports.
Wireless setup is performed through the Wireless tab.
Router IP
The values for the Gateway’s Local IP Address and Subnet
Mask are shown here. In most cases, keeping the default
values will work.
Local IP Address The default value is 192.168.1.1.
Subnet Mask The default value is 255.255.255.0.
Network Address Server Settings (DHCP)
The settings allow you to configure the Gateway’s Dynamic
Host Configuration Protocol (DHCP) server function. The
Gateway can be used as a DHCP server for your network.
A DHCP server automatically assigns an IP address to each
computer on your network. If you choose to enable the
Gateway’s DHCP server option, make sure there is no
other DHCP server on your network.
Network Address Server Settings (DHCP)
DHCP Server A Dynamic Host Configuration Protocol
(DHCP) server automatically assigns an IP address to each
computer on your network for you. Unless you already
have one, Linksys recommends that you keep the default,
Enable. You can also use the Gateway in DHCP Relay
mode. (This setting is not available for all encapsulation
types.)
DHCP Server If you enable the DHCP Relay mode for the
DHCP Server setting, enter the IP address for the DHCP
relay server in the fields provided. (This setting is not
available for all encapsulation types.)
Starting IP Address Enter a value for the DHCP server
to start with when issuing IP addresses. Because the
Gateway’s default IP address is 192.168.1.1, the Starting IP
Address must be 192.168.1.2 or greater, but smaller than
192.168.1.253. The default is 192.168.1.100.
Maximum Number of DHCP Users Enter the maximum
number of users (network devices) that can obtain an IP
address. The number will vary depending on the starting
IP address entered and cannot be greater than 253. The
default is 50.
Client Lease Time The Client Lease Time is the amount
of time a network device will be allowed connection to
the Gateway with its current dynamic IP address. Enter the
number of minutes that the device will be “leased” this
dynamic IP address. After the time is up, the device will
be automatically assigned a new dynamic IP address. The
default is 0 minutes, which means one day.
Router IP
Wireless-G ADSL2+ IAD Gateway
Static DNS 1-3 The Domain Name System (DNS) is how
the Internet translates domain or website names into
Internet addresses or URLs. At least one DNS server IP
address is provided by your ISP. You can enter up to three
10
Chapter 3
Advanced Configuration
DNS server IP addresses here. The Gateway will use these
for quicker access to functioning DNS servers.
WINS The Windows Internet Naming Service (WINS)
converts NetBIOS names to IP addresses. If you use a WINS
server, enter that server’s IP address here. Otherwise, leave
this field blank.
Time Settings
Time Zone Select the time zone in which your network
functions.
Automatically adjust clock for daylight saving
changes Select this option if you want the Gateway to
automatically adjust for daylight saving time.
Time Settings and Language
Language
Select the language you want the web-based utility to
use: English, French, or German.
Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.
Setup > DDNS
DynDNS.org
Setup > DDNS > DynDNS
Username Enter the Username for your account.
Password Enter the Password for your account.
Host Name Enter the DDNS URL assigned by the service.
Status The status of the DDNS service connection is
displayed.
Connect To manually trigger an update, click this
button.
Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.
TZO.com
The Gateway offers a Dynamic Domain Name System
(DDNS) feature. DDNS lets you assign a fixed host and
domain name to a dynamic Internet IP address. It is useful
when you are hosting your own website, FTP server, or
other server behind the Gateway.
Before you can use this feature, you need to sign
up for DDNS service with a DDNS service provider,
www.dyndns.org or www.TZO.com. If you do not want to
use this feature, keep the default, Disabled.
DDNS
DDNS Service
If your DDNS service is provided by DynDNS.org, then
select DynDNS.org from the drop-down menu. If your
DDNS service is provided by TZO, then select TZO.com.
The features available on the DDNS screen will vary,
depending on which DDNS service provider you use.
Setup > DDNS > TZO
E-mail Address Enter the E-mail Address for your
account.
TZO Password Enter the Password for your account.
Domain Name Enter the DDNS URL assigned by the
service.
Status The status of the DDNS service connection is
displayed here.
Connect To manually trigger an update, click this
button.
Click Save Settings to apply your changes, or click Cancel
Changes to cancel your changes.
Wireless-G ADSL2+ IAD Gateway
11
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