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USER GUIDE
Wireless-N Home Router
Model: WRT120N
About This Guide
i
Wireless-N Home Router
About This Guide
Icon Descriptions
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.
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.
Resource Website
Linksys www.linksysbycisco.com
Linksys
International
www.linksysbycisco.com/international
Glossary
www.linksysbycisco.com/glossary
Network Security www.linksysbycisco.com/security
Copyright and Trademarks
Linksys, Cisco and the Cisco Logo are
registered trademarks or trademarks of
Cisco Systems, Inc. and/or its affiliates in
the U.S. and certain other countries. Other
brands and product names are trademarks
or registered trademarks of their respective
holders. Copyright © 2009 Cisco Systems,
Inc. All rights reserved.
Table of Contents
ii
Wireless-N Home Router
Chapter 1: Product Overview 1
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter 2: Wireless Security Checklist 3
General Network Security Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Additional Security Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 3: Advanced Conguration 4
Setup > Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Setup > DDNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Setup > MAC Address Clone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Setup > Advanced Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Wireless > Basic Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Wireless > Wireless Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Wireless > Wireless MAC Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Wireless > Advanced Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Security > Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Security > VPN Passthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Access Restrictions > Internet Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Applications and Gaming > Single Port Forwarding. . . . . . . . . . . . . . . . . . . . . . . .19
Applications and Gaming > Port Range Forwarding . . . . . . . . . . . . . . . . . . . . . . .19
Applications & Gaming > Port Range Triggering . . . . . . . . . . . . . . . . . . . . . . . . . .20
Applications and Gaming > DMZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Applications and Gaming > QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Administration > Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Administration > Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Administration > Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Administration > Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Administration > Firmware Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Status > Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Status > Local Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Status > Wireless Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Appendix A: Troubleshooting 28
Appendix B: Specications 29
Appendix C: Warranty Information 30
Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Table of Contents
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Wireless-N Home Router
Appendix D: Regulatory Information 32
FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
FCC Radiation Exposure Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Safety Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Industry Canada Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Avis d’Industrie Canada. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Wireless Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Avis de non-responsabilité concernant les appareils sans fil . . . . . . . . . . . . . . . . . .33
User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste
Electric and Electronic Equipment (WEEE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Appendix E: Software End User License Agreement 38
Cisco Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Software Licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Chapter 1
Product Overview
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Wireless-N Home Router
Chapter 1:
Product Overview
Thank you for choosing the Linksys by Cisco Wireless-N
Home Router. The Router lets you access the Internet via
a wireless connection or through one of its four switched
ports. You can also use the Router to share resources
such as computers, printers and files. A variety of security
features help to protect your data and your privacy
while you are online. Security features include WPA2
security, a Stateful Packet Inspection (SPI) firewall, and
NAT technology. Configuring the Router is easy using the
provided browser–based utility.
Front Panel
1, 2, 3, 4 (Blue) These numbered LEDs,
corresponding with the numbered ports on the
Routers back panel, serve two purposes. If the
LED is continuously lit, the Router is successfully
connected to a device through that port. A
flashing LED indicates network activity over
that port.
Wi-Fi Protected Setup Button If you have
client devices, such as wireless adapters, that
support Wi-Fi Protected Setup, then you can
use Wi-Fi Protected Setup to automatically
configure wireless security for your wireless
network.
To use Wi-Fi Protected Setup, run the Setup
Wizard, or refer to Wi-Fi Protected Setup, page
11.
Wi-Fi Protected Setup LED (Blue/
Amber) The LED lights up blue when wireless
security is enabled. It flashes blue for two
minutes during Wi-Fi Protected Setup.
The LED lights up amber if there is an error
during the Wi-Fi Protected Setup process. Make
sure the client device supports Wi-Fi Protected
Setup. Wait until the LED is off, and then try again.
The LED flashes when a Wi-Fi Protected Setup
session is active. The Router supports one
session at a time. Wait until the LED is solidly lit,
or off before starting the next Wi-Fi Protected
Setup session.
Wireless (Blue) The Wireless LED lights up
when the wireless feature is enabled. If the LED
is flashing, the Router is sending or receiving
data over the network.
Internet (Blue) The Internet LED lights up
when there is a connection made through the
Internet port. It flashes to indicate network
activity over the Internet port.
Power (Blue) The Power LED lights up and will
stay on while the Router is powered on. When
the Router goes through its self-diagnostic
mode during every boot-up, this LED will flash.
When the diagnostic is complete, the LED will
be solidly lit.
Back Panel
Internet The Internet port is where you will
connect your cable or DSL Internet connection.
4, 3, 2, 1 These Ethernet ports (4, 3, 2, 1)
connect the Router to computers on your wired
network and other Ethernet network devices.
Reset The Reset button is located on the
right side of the product label. There are two
ways to reset the Router to its 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 Router’s browser-based
utility.
Power The Power port connects to the included
power adapter.
Horizontal Placement
The Router has four rubber feet on its bottom panel. Place
the Router on a level surface near an electrical outlet.
Chapter 1
Product Overview
2
Wireless-N Home Router
Wall-Mounting Placement
The Router has two wall-mount slots on its bottom
panel. The distance between the slots is 152 mm
(6 inches).
Two screws are needed to mount the Router.
Suggested Mounting Hardware
2.5-3.0 mm
4-5 mm 1-1.5 mm
Note: Mounting hardware illustrations are not
true to scale.
NOTE: Linksys is not responsible for damages
incurred by insecure wall-mounting hardware.
Follow these instructions:
1. Determine where you want to mount the Router. Make
sure that the wall you use is smooth, flat, dry, and
sturdy. Also make sure the location is within reach of
an electrical outlet.
2. Drill two holes into the wall. Make sure the holes are
152 mm (6 inches) apart.
3. Insert a screw into each hole and leave 3 mm
(0.12 inches) of its head exposed.
4. Maneuver the Router so the wall-mount slots line up
with the two screws.
5. Place the wall-mount slots over the screws and slide
the Router down until the screws fit snugly into the
wall-mount slots.
152 mm
Wall-Mounting Template
Print this page at 100% size.
Cut along the dotted line, and place on the wall to drill precise spacing.
Chapter 2
Wireless Security Checklist
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Wireless-N Home Router
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 and routers,
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 devices password so it will be hard to guess.
3. Enable MAC address filtering
Linksys routers 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.
4. Enable encryption
Encryption protects data transmitted over a wireless
network. Wi-Fi Protected Access (WPA/WPA2) and Wired
Equivalent 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.
WEB: For more information on wireless security,
visit www.linksysbycisco.com/security
Chapter 3
Advanced Configuration
4
Wireless-N Home Router
Chapter 3:
Advanced Configuration
After setting up the Router with the Setup Wizard (located
on the CD-ROM), the Router will be ready for use. However,
if you want to change its advanced settings, use the
Routers browser-based utility. This chapter describes each
web page of the utility and each pages key functions. You
can access the utility via a web browser on a computer
connected to the Router.
The browser-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 Router, you
should use the Setup Wizard on the Setup
CD-ROM. If you want to configure advanced
settings, use this chapter to learn about the
browser-based utility.
Access the Browser-Based Utility
To access the browser-based utility, launch the web
browser on your computer, and enter the Router’s default
IP address, 192.168.1.1, in the Address field. Then press
Enter.
A login screen will appear. (Non-Windows XP users will
see a similar screen.) Leave the User name field blank.
The first time you open the browser-based utility, use the
default password admin. (You can set a new password
from the Administration > Management screen.) Click OK
to continue.
Login Screen
Setup > Basic Setup
The first screen that appears is the Basic Setup screen. This
allows you to change the Routers general settings.
Setup > Basic Setup
Language
Select your language
To use a different language, select
one from the drop-down menu. The language of the
browser-based utility will change five seconds after you
select another language.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Internet Setup
The Internet Setup section configures the Router to your
Internet connection. Most of this information can be
obtained through your Internet Service Provider (ISP).
Internet Connection Type
Select the type of Internet connection your ISP provides
from the drop-down menu. These are the available types:
Automatic Configuration - DHCP
Static IP
PPPoE
PPTP
L2TP
Telstra Cable
Chapter 3
Advanced Configuration
5
Wireless-N Home Router
Automatic Configuration - DHCP
By default, the Router’s Internet Connection Type is set
to Automatic configuration - DHCP, which should be
kept only if your ISP supports DHCP or you are connecting
through a dynamic IP address. (This option usually applies
to cable connections.)
Internet Connection Type > Automatic Configuration - DHCP
Static IP
If you are required to use a permanent IP address to
connect to the Internet, select Static IP.
Internet Connection Type > Static IP
Internet IP Address This is the Routers IP address, when
seen from the Internet. Your ISP will provide you with the
IP Address you need to specify here.
Subnet Mask This is the Routers Subnet Mask, as seen
by users on the Internet (including your ISP). Your ISP will
provide you with the Subnet Mask.
Default Gateway Your ISP will provide you with the IP
address of the ISP server.
DNS 1-3 Your ISP will provide you with at least one DNS
(Domain Name System) server IP address.
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.
Internet Connection Type > PPPoE
Username and Password Enter the Username and
Password provided by your ISP.
Service Name (Optional) If provided by your ISP, enter
the Service Name.
Connect on Demand: Max Idle Time You can configure
the Router 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 Router 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 Router will periodically check your Internet
connection. If you are disconnected, then the Router
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 Router to check
the Internet connection. The default Redial Period is
30 seconds.
PPTP
Point-to-Point Tunneling Protocol (PPTP) is a service that
applies to connections in Europe only.
Internet Connection Type > PPTP
If your ISP supports DHCP or you are connecting through
a dynamic IP address, then select Obtain an IP Address
Automatically. If you are required to use a permanent IP
address to connect to the Internet, then select Specify an
IP Address. Then configure the following:
Specify an IP Address This is the Routers IP address,
as seen from the Internet. Your ISP will provide you
with the IP Address you need to specify here.
Subnet Mask This is the Routers Subnet Mask, as
seen by users on the Internet (including your ISP). Your
ISP will provide you with the Subnet Mask.
Default Gateway Your ISP will provide you with the
IP address of the ISP server.
Chapter 3
Advanced Configuration
6
Wireless-N Home Router
DNS 1-3 Your ISP will provide you with at least one
DNS (Domain Name System) server IP address.
PPTP Server IP Address Your ISP will provide you with
the IP address of the PPTP server.
Username and Password Enter the Username and
Password provided by your ISP.
Connect on Demand: Max Idle Time You can configure
the Router 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 Router 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
Router will periodically check your Internet connection. If
you are disconnected, then the Router 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 Router to check the Internet connection. The
default value is 30 seconds.
L2TP
L2TP is a service that applies to connections in Israel only.
Internet Connection Type > L2TP
Server IP Address This is the IP address of the L2TP
Server. Your ISP will provide you with the IP Address you
need to specify here.
Username and Password Enter the Username and
Password provided by your ISP.
Connect on Demand: Max Idle Time You can configure
the Router 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 Router 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 Router will periodically check your Internet
connection. If you are disconnected, then the Router
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 Router to check
the Internet connection. The default Redial Period is
30 seconds.
Telstra Cable
Telstra Cable is a service that applies to connections in
Australia only.
Internet Connection Type > Telstra Cable
Server IP Address This is the IP address of the Heartbeat
Server. Your ISP will provide you with the IP Address you
need to specify here.
Username and Password Enter the Username and
Password provided by your ISP.
Connect on Demand: Max Idle Time You can configure
the Router 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 Router 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 Router will periodically check your Internet
connection. If you are disconnected, then the Router
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 Router to check
the Internet connection. The default Redial Period is
30 seconds.
Optional Settings
Some of these settings may be required by your ISP. Verify
with your ISP before making any changes.
Optional Settings
Chapter 3
Advanced Configuration
7
Wireless-N Home Router
Host Name and Domain Name These fields allow you to
supply a host and domain name for the Router. 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 Router 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 size depends on the Internet Connection Type:
DHCP, Static IP, or Telstra: 1500
PPPoE: 1492
PPTP or L2TP: 1460
Network Setup
The Network Setup section changes the settings of the
local network. Wireless setup is performed through the
Wireless tab.
Router IP
This presents both the Routers Local IP Address and
Subnet Mask as seen by your network.
Router IP
DHCP Server Setting
The settings allow you to configure the Routers Dynamic
Host Configuration Protocol (DHCP) server function. The
Router 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
Routers DHCP server option, make sure there is no other
DHCP server on your network.
DHCP Server Setting
DHCP Server DHCP is enabled by factory default. If you
already have a DHCP server on your network, or you do
not want a DHCP server, then select Disabled (no other
DHCP features will be available).
DHCP Reservation Click this button if you want to assign
a fixed local IP address to a MAC address.
DHCP Reservation
You will see a list of DHCP clients with the following
information: Client Name, Interface, IP Address, and
MAC Address.
DHCP Reservation
Select Clients from DHCP Table Click the Select
check box to reserve a client’s IP address. Then click
Add Clients.
Manually Adding Client To manually assign an IP
address, enter the clients name in the Enter Client
Name field. Enter the IP address you want it to have in
the Assign IP Address field. Enter its MAC address in the
To This MAC Address field. Then click Add.
Clients Already Reserved
A list of DHCP clients and their fixed local IP addresses
will be displayed at the bottom of the screen. If you
want to remove a client from this list, click Remove.
Click Save Settings to apply your changes, or click
Cancel Changes to clear your changes. To update the
on-screen information, click Refresh. To exit this screen
and return to the Basic Setup screen, click Close.
Start IP Address Enter a value for the DHCP server to
start with when is
suing IP addresses. Because the Routers
default IP address is 192.168.1.1, the Start 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 Users Enter the maximum number
of computers that you want the DHCP server to assign IP
Chapter 3
Advanced Configuration
8
Wireless-N Home Router
addresses to. This number cannot be greater than 253.
The default is 50.
IP Address Range Displayed here is the range of available
IP addresses.
Client Lease Time The Client Lease Time is the amount
of time a network user will be allowed connection to the
Router with their current dynamic IP address. Enter the
amount of time, in minutes, that the user will be “leased”
this dynamic IP address. After the time has expired, the
user will be automatically assigned a new dynamic IP
address, or the lease will be renewed. The default is 0
minutes, which means one day.
Static DNS 1-3
The Domain Name System (DNS) is how
the Internet translates domain or website names into
Internet addresses or URLs. Your ISP will provide you with at
least one DNS Server IP Address. If you wish to use another,
enter that IP Address in one of these fields. You can enter up
to three DNS Server IP Addresses here. The Router will use
these for quicker access to functioning DNS servers
.
WINS The Windows Internet Naming Service (WINS)
manages each computers interaction with the Internet. If
you use a WINS server, enter that servers IP Address here.
Otherwise, leave this blank.
Time Settings
Time Zone Select the time zone in which your network
functions from this drop-down menu. (You can even
automatically adjust for daylight saving time.)
Time Settings
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Setup > DDNS
The Router 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 Router.
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.
DynDNS.org
Setup > DDNS > DynDNS
Username Enter the Username for your DDNS account.
Password Enter the Password for your DDNS account.
Host Name The is the DDNS URL assigned by the DDNS
service.
System Select the DynDNS service you use: Dynamic,
Static, or Custom. The default selection is Dynamic.
Mail Exchange (Optional) Enter the address of your mail
exchange server, so e-mails to your DynDNS address go to
your mail server.
Backup MX This feature allows the mail exchange server
to be a backup. To disable this feature, keep the default,
Disabled. To enable the feature, select Enabled. If you
are not sure which setting to select, keep the default,
Disabled.
Wildcard This setting enables or disables wildcards
for your host. For example, if your DDNS address is
myplace.dyndns.org and you enable wildcards, then
x.myplace.dyndns.org will work as well (x is the wildcard).
To disable wildcards, keep the default, Disabled. To enable
wildcards, select Enabled. If you are not sure which setting
to select, keep the default, Disabled.
Internet IP Address The Router’s Internet IP address is
displayed here. Because it is dynamic, it will change.
Status The status of the DDNS service connection is
displayed here.
Update To manually trigger an update, click this button.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Chapter 3
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9
Wireless-N Home Router
TZO.com
Setup > DDNS > TZO
E-mail Address, TZO Key, and Domain Name Enter the
settings of the account you set up with TZO.
Internet IP Address The Router’s Internet IP address is
displayed here. Because it is dynamic, it will change.
Status The status of the DDNS service connection is
displayed here.
Update To manually trigger an update, click this button.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Setup > MAC Address Clone
A MAC address is a 12-digit code assigned to a unique
piece of hardware for identification. Some ISPs will require
you to register a MAC address in order to access the
Internet. If you do not wish to re-register the MAC address
with your ISP, you may assign the MAC address you have
currently registered with your ISP to the Router with the
MAC Address Clone feature.
Setup > MAC Address Clone
MAC Address Clone
Enabled/Disabled To have the MAC Address cloned,
select Enabled.
MAC Address Enter the MAC Address registered with
your ISP here.
Clone My PC’s MAC Click this button to clone the MAC
address of the computer you are using.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Setup > Advanced Routing
This screen is used to set up the Routers advanced
functions. Operating Mode allows you to select the
type(s) of advanced functions you use. Dynamic Routing
automatically adjusts how packets travel on your network.
Static Routing sets up a fixed route to another network
destination.
Setup > Advanced Routing
Advanced Routing
NAT
Enabled/Disabled If this Router is hosting your network’s
connection to the Internet, keep the default, Enabled. If
another router exists on your network, select Disabled.
When the NAT setting is disabled, dynamic routing will be
enabled.
Dynamic Routing (RIP)
Enabled/Disabled This feature enables the Router to
automatically adjust to physical changes in the networks
layout and exchange routing tables with the other router(s).
The Router determines the network packets’ route based
on the fewest number of hops between the source and
the destination. When the NAT setting is enabled, the
Dynamic Routing feature is automatically disabled. When
the NAT setting is disabled, this feature is available. Select
Enabled to use the Dynamic Routing feature.
Static Routing
A static route is a pre-determined pathway that network
information must travel to reach a specific host or network.
Enter the information described below to set up a new
static route.
Chapter 3
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10
Wireless-N Home Router
Route Entries To set up a static route between the Router
and another network, select a number from the drop-
down list. Click Delete This Entry to delete a static route.
Enter Route Name Enter a name for the Route here,
using a maximum of 25 alphanumeric characters.
Destination LAN IP The Destination LAN IP is the address
of the remote network or host to which you want to assign
a static route.
Subnet Mask The Subnet Mask determines which
portion of a Destination LAN IP address is the network
portion, and which portion is the host portion.
Default Gateway This is the IP address of the gateway
device that allows for contact between the Router and the
remote network or host.
Interface This interface tells you whether the Destination
IP Address is on the LAN & Wireless (Ethernet and wireless
networks) or the WAN (Internet).
Click Show Routing Table to view the static routes you
have already set up.
Advanced Routing > Routing Table
Routing Table
For each route, the Destination LAN IP address, Subnet
Mask, Gateway, and Interface are displayed. To update
the information, click Refresh. To exit this screen and
return to the Advanced Routing screen, click Close.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Wireless > Basic Wireless Settings
The basic settings for wireless networking are set on this
screen.
There are two ways to configure the Routers wireless
network(s), manual and Wi-Fi Protected Setup.
Wi-Fi Protected Setup is a feature that makes it easy to set
up your wireless network. If you have client devices, such
as wireless adapters, that support Wi-Fi Protected Setup,
then you can use Wi-Fi Protected Setup.
Configuration View To manually configure your wireless
network, select Manual. Proceed to Basic Wireless
Settings (Manual), page 10. To use Wi-Fi Protected
Setup, select Wi-Fi Protected Setup. Proceed to Wi-Fi
Protected Setup, page 11.
Basic Wireless Settings (Manual)
Wireless > Basic Wireless Settings (Manual Setup)
Network Mode From this drop-down menu, you can
select the wireless standards running on your network. If
you have Wireless-N, Wireless-G, and Wireless-B devices in
your network, keep the default, Mixed. If you have only
Wireless-G and Wireless-B devices in your network, select
BG-Mixed. If you have only Wireless-N devices, select
Wireless-N Only. If you have only Wireless-G devices,
select Wireless-G Only. If you have only Wireless-B
devices, select Wireless-B Only. If you do not have any
wireless devices in your network, select Disabled.
Network Name (SSID) The SSID is the network name
shared among all points in a wireless network. The
SSID must be identical for all devices in the wireless
network. It is case-sensitive and must not exceed
32 characters (use any of the characters on the keyboard).
Make sure this setting is the same for all points in your
wireless network. For added security, you should change
the default SSID (linksys) to a unique name.
Channel Width For best performance in a Wireless-N
network, select 40MHz only. For Wireless-G and Wireless-B
networking only, keep the default, 20MHz only. If you
are not sure which option to use, select Auto (20MHz or
40MHz).
NOTE: If you select 40MHz only for the Channel
Width setting, then Wireless-N can use two
channels: a primary one (Wide Channel) and
a secondary one (Standard Channel). This will
enhance Wireless-N performance.
Wide Channel If 40MHz only is the Channel Width
setting, then this setting will be available for your primary
Chapter 3
Advanced Configuration
11
Wireless-N Home Router
Wireless-N channel. Select any channel from the drop-
down menu. If you are not sure which channel to select,
keep the default, Auto.
Standard Channel If 20MHz only is the Channel Width
setting, then select the appropriate channel for your
wireless network. If you are not sure which channel to
select, then keep the default, Auto.
If 40MHz only is the Channel Width setting, then the
Standard Channel will be a secondary channel for
Wireless-N (2.4 GHz). If you selected a specific channel
for the Wide Channel setting, then the Standard Channel
options will be available. Select the appropriate channel
for your wireless network.
SSID Broadcast When wireless clients survey the local
area for wireless networks to associate with, they will
detect the SSID broadcast by the Router. To broadcast the
Routers SSID, keep the default, Enabled. If you do not want
to broadcast the Router’s SSID, then select Disabled.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Wi-Fi Protected Setup
There are three methods available. Use the method that
applies to the client device you are configuring.
Wireless > Basic Wireless Settings (Wi-Fi Protected Setup)
Wi-Fi Protected Setup Configured
NOTE: Wi-Fi Protected Setup configures one
client device at a time. Repeat the instructions
for each client device that supports Wi-Fi
Protected Setup.
Method #1
Use this method if your client device has a Wi-Fi Protected
Setup button.
1. Click or press the Wi-Fi Protected Setup button on
the client device.
2. Click the Wi-Fi Protected Setup button on this
screen.
3. After the client device has been configured, click
OK. Then refer back to your client device or its
documentation for further instructions.
Wi-Fi Protected Setup > Congratulations
Method #2
Use this method if your client device has a Wi-Fi Protected
Setup PIN number.
1. Enter the PIN number in the field on this screen.
2. Click Register.
3. After the client device has been configured, click
OK. Then refer back to your client device or its
documentation for further instructions.
Chapter 3
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12
Wireless-N Home Router
Method #3
Use this method if your client device asks for the Routers
PIN number.
1. Enter the PIN number listed on this screen. (It is also
listed on the label on the bottom of the Router.)
2. After the client device has been configured, click
OK. Then refer back to your client device or its
documentation for further instructions.
The Wi-Fi Protected Setup Status, Network Name (SSID),
Security, Encryption, and Passphrase are displayed at the
bottom of the screen.
NOTE: If you have client devices that do not
support Wi-Fi Protected Setup, note the wireless
settings, and then manually configure those
client devices.
Wireless > Wireless Security
The Wireless Security screen configures the security of
your wireless network. There are six wireless security
mode options supported by the Router: WPA Personal,
WPA Enterprise, WPA2 Personal, WPA2 Enterprise, RADIUS,
and WEP. (WPA stands for Wi-Fi Protected Access, which
is a security standard stronger than WEP encryption. WEP
stands for Wired Equivalent Privacy, while RADIUS stands
for Remote Authentication Dial-In User Service.) These
six are briefly discussed here. For detailed instructions
on configuring wireless security for the Router, refer to
Chapter 2: Wireless Security Checklist, page 3.
Wireless Security
Security Mode
Select the security method for your wireless network. If
you do not want to use wireless security, keep the default,
Disabled.
WPA Personal
NOTE: If you are using WPA, then each device in
your wireless network MUST use the same WPA
method and shared key, or else the network will
not function properly.
Security Mode > WPA Personal
Passphrase Enter a Passphrase of 8-63 characters.
Key Renewal Enter a Key Renewal period, which instructs
the Router how often it should change the encryption
keys. The default is 3600 seconds.
WPA2 Personal
Security Mode > WPA2 Personal
Encryption WPA2 supports two encryption methods,
TKIP and AES, with dynamic encryption keys. Select the
type of algorithm, AES or TKIP or AES. The default is TKIP
or AES.
Passphrase Enter a Passphrase of 8-63 characters.
Key Renewal Enter a Key Renewal period, which instructs
the Router how often it should change the encryption
keys. The default is 3600 seconds.
Chapter 3
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Wireless-N Home Router
WPA Enterprise
This option features WPA used with a RADIUS server. (This
should only be used when a RADIUS server is connected
to the Router.)
Security Mode > WPA Enterprise
RADIUS Server Enter the IP address of the server.
RADIUS Port Enter the port number of the server. The
default is 1812.
Shared Secret Enter the key shared between the Router
and the server.
Key Renewal Enter a Key Renewal period, which instructs
the Router how often it should change the encryption
keys. The default is 3600 seconds.
WPA2 Enterprise
This option features WPA2 used with a RADIUS server. (This
should only be used when a RADIUS server is connected
to the Router.)
Security Mode > WPA2 Enterprise
Encryption WPA2 supports two encryption methods,
TKIP and AES, with dynamic encryption keys. Select the
type of algorithm, AES or TKIP or AES. The default is TKIP
or AES.
RADIUS Server Enter the IP address of the server.
RADIUS Port Enter the port number of the server. The
default is 1812.
Shared Secret Enter the key shared between the Router
and the server.
Key Renewal Enter a Key Renewal period, which instructs
the Router how often it should change the encryption
keys. The default is 3600 seconds.
RADIUS
This option features WEP used with a RADIUS server. (This
should only be used when a RADIUS server is connected
to the Router.)
IMPORTANT: If you are using WEP, then each
device in your wireless network MUST use the
same WEP encryption method and key, or else
the network will not function properly.
Security Mode > RADIUS
RADIUS Server Enter the IP address of the server.
RADIUS Port Enter the port number of the server. The
default is 1812.
Shared Secret Enter the key shared between the Router
and the server.
Encryption Select a level of WEP encryption,
40/64 bits (10 hex digits) or 104/128 bits (26 hex digits).
The default is 40/64 bits (10 hex digits).
Passphrase Enter a Passphrase to automatically generate
WEP keys. Then click Generate.
Key 1 If you did not enter a Passphrase, enter the WEP
key manually.
TX Key TX (Transmit) Key 1 is used.
Chapter 3
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14
Wireless-N Home Router
WEP
WEP is a basic encryption method, which is not as secure
as WPA.
IMPORTANT: If you are using WEP encryption,
then each device in your wireless network MUST
use the same WEP encryption method and key,
or else the network will not function properly.
Security Mode > WEP
Encryption Select a level of WEP encryption,
40/64 bits (10 hex digits) or 104/128 bits (26 hex digits).
The default is 40/64 bits (10 hex digits).
Passphrase Enter a Passphrase to automatically generate
WEP keys. Then click Generate.
Key 1 If you did not enter a Passphrase, enter the WEP
key manually.
TX Key TX (Transmit) Key 1 is used.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Wireless > Wireless MAC Filter
Wireless access can be filtered by using the MAC addresses of
the wireless devices transmitting within your networks radius.
Wireless > Wireless MAC Filter
Wireless MAC Filter
Enabled/Disabled
To filter wireless users by MAC Address,
either permitting or blocking access, select Enabled. If you
do not wish to filter users by MAC Address, keep the default,
Disabled
.
Access Restriction
Prevent Select this option to block wireless access by
MAC Address. This button is selected by default.
Permit Select this option to allow wireless access by MAC
Address. This button is not selected by default.
MAC Address Filter List
Wireless Client List Click this button to open the Wireless
Client List screen.
Chapter 3
Advanced Configuration
15
Wireless-N Home Router
Wireless Client List
Wireless Client List
This screen shows computers and other devices on
the wireless network. The list can be sorted by Client
Name, IP Address, MAC Address, and Status.
Select Save to MAC Address Filter List for any device
you want to add to the MAC Address Filter List. Then
click Add.
To update the on-screen information, click Refresh.
To exit this screen and return to the Wireless MAC Filter
screen, click Close.
MAC 01-32 Enter the MAC addresses of the devices
whose wireless access you want to block or allow.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Wireless > Advanced Wireless Settings
This Advanced Wireless Settings screen is used to set up
the Router’s advanced wireless functions. These settings
should only be adjusted by an expert administrator as
incorrect settings can reduce wireless performance.
Wireless > Advanced Wireless Settings
Advanced Wireless
AP Isolation This option isolates all wireless clients and
wireless devices on your network from each other. Wireless
devices will be able to communicate with the Router but
not with each other. To use this option, select Enable. AP
Isolation is disabled by default.
Frame Burst This option should provide your network
with greater performance, depending on the manufacturer
of your wireless products. To use this option, keep the
default, Enable. To disable this option, select Disable.
Authentication Type The Authentication Type setting
is available if the Security Mode is RADIUS or WEP. The
default is set to Auto, which allows either Open System
or Shared Key authentication to be used. With Open
System authentication, the sender and the recipient do
NOT use a WEP key for authentication. With Shared Key
authentication, the sender and recipient use a WEP key for
authentication. Select Shared Key to only use Shared Key
authentication.
Basic Rate The Basic Rate setting is not actually one rate
of transmission but a series of rates at which the Router
can transmit. (The Basic Rate is not the actual rate of
data transmission. If you want to specify the Routers rate
of data transmission, configure the Transmission Rate
setting.) The Router will advertise its Basic Rate to the other
wireless devices in your network, so they know which
rates will be used. The Router will also advertise that it will
automatically select the best rate for transmission. The
default setting is Auto, when the Router can transmit at
all standard wireless rates (1-2 Mbps, 5.5 Mbps, 11 Mbps,
18 Mbps, and 24Mbps). Select 1-2Mbps for use with older
wireless technology. Select All, when the Router can
transmit at all wireless rates.
Transmission Rate The Transmission setting is available
if the Network Mode is BG-Mixed, Wireless-G Only, or
Wireless-B Only. The rate of data transmission should be set
depending on the speed of your wireless network. Select
from a range of transmission speeds, or keep the default,
Auto, to have the Router automatically use the fastest
possible data rate and enable the Auto-Fallback feature.
Auto-Fallback will negotiate the best possible connection
speed between the Router and a wireless client.
N Transmission Rate The N Transmission setting is
available if the Network Mode is Mixed or Wireless-N Only.
The rate of data transmission should be set depending
on the speed of your Wireless-N networking. Select from
a range of transmission speeds, or keep the default,
Auto, to have the Router automatically use the fastest
possible data rate and enable the Auto-Fallback feature.
Auto-Fallback will negotiate the best possible connection
speed between the Router and a wireless client.
CTS Protection Mode The Router automatically uses CTS
(Clear-To-Send) Protection Mode when your Wireless-N and
Chapter 3
Advanced Configuration
16
Wireless-N Home Router
Wireless-G devices are experiencing severe problems and
are not able to transmit to the Router in an environment
with heavy 802.11b traffic. This option boosts the Router’s
ability to catch all Wireless-N and Wireless-G transmissions
but severely decreases performance. To use this option,
keep the default, Auto. To disable this option, select
Disabled.
Beacon Interval Enter a value between 1 and 65,535
milliseconds. The Beacon Interval value indicates the
frequency interval of the beacon. A beacon is a packet
broadcast by the Router to synchronize the wireless
network. The default is 100 milliseconds.
DTIM Interval This value, between 1 and 255, indicates
the interval of the Delivery Traffic Indication Message
(DTIM). A DTIM field is a countdown field informing
clients of the next window for listening to broadcast
and multicast messages. When the Router has buffered
broadcast or multicast messages for associated clients, it
sends the next DTIM with a DTIM Interval value. Its clients
hear the beacons and awaken to receive the broadcast
and multicast messages. The default value is 1.
Fragmentation Threshold This value specifies the
maximum size for a packet before data is fragmented
into multiple packets. If you experience a high packet
error rate, you may slightly increase the Fragmentation
Threshold. Setting the Fragmentation Threshold too low
may result in poor network performance. Only minor
reduction of the default value is recommended. In most
cases, it should remain at its default value of 2346.
RTS Threshold Should you encounter inconsistent data
flow, only minor reduction of the default value, 2347, is
recommended. If a network packet is smaller than the
preset RTS threshold size, the RTS/CTS mechanism will
not be enabled. The Router sends Request to Send (RTS)
frames to a particular receiving station and negotiates
the sending of a data frame. After receiving an RTS, the
wireless station responds with a Clear to Send (CTS) frame
to acknowledge the right to begin transmission. The RTS
Threshold value should remain at its default value of
2347.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Security > Firewall
The Firewall screen is used to configure a firewall that can
filter out various types of unwanted traffic on the Routers
local network.
Security > Firewall
Firewall
SPI Firewall Protection To use firewall protection,
keep the default selection, Enabled. To turn off firewall
protection, select Disabled.
Internet Filter
For the following options, select the option to enable it, or
deselect the option to disable it.
Filter Anonymous Internet Requests This feature makes
it more difficult for outside users to work their way into
your network. This feature is enabled by default. Deselect
this option to allow anonymous Internet requests
.
Filter Multicast Multicasting allows for multiple
transmissions to specific recipients at the same time. If
multicasting is permitted, then the Router will allow IP
multicast packets to be forwarded to the appropriate
computers. Select this option to filter multicasting. This
option is disabled by default.
Filter Internet NAT Redirection This feature uses port
forwarding to block access to local servers from local
networked computers. Select this option to filter Internet
NAT redirection. This option is disabled by default.
Filter IDENT (Port 113) This feature keeps port 113 from
being scanned by devices outside of your local network.
This feature is enabled by default. Deselect this option to
disable it.
Web Filter
For the following options, select the option to enable it, or
deselect the option to disable it.
Proxy Use of WAN proxy servers may compromise the
Gateway’s security. Denying Proxy will disable access to
any WAN proxy servers. Select this option to enable proxy
filtering. This option is disabled by default.
Java Java is a programming language for websites. If you
deny Java, you run the risk of not having access to Internet
sites created using this programming language. Select
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