LINKSYS WRT54GV81 Wireless-G Broadband Router User Manual Manual Part 1

LINKSYS LLC Wireless-G Broadband Router Manual Part 1

Contents

Manual Part 1

USER GUIDE
Wireless-G
Broadband Router
About This Guide
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
Most web browsers allow you to enter the web address
without adding the http:// in front of the address. This
User Guide will refer to websites without including http://
in front of the address. Some older web browsers may
require you to add it.
Resource Website
Linksys www.linksys.com
Linksys International www.linksys.com/international
Glossary www.linksys.com/glossary
Network Security www.linksys.com/security
Copyright and Trademarks
Specifications are subject to change without notice.
Linksys is a registered trademark or trademark of Cisco
Systems, Inc. and/or its affiliates in the U.S. and certain
other countries. Copyright © 2007 Cisco Systems, Inc. All
rights reserved. Other brands and product names are
trademarks or registered trademarks of their respective
holders.
Wireless-G Broadband Router i
Table of Contents
Chapter 1: Product Overview 1
Front Panel.................................................. 1
Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter 2: Wireless Security Checklist 2
General Network Security Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Additional Security Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter 3: Advanced Conguration 3
Setup > Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Setup > DDNS................................................ 6
Setup > MAC Address Clone....................................... 7
Setup > Advanced Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Wireless > Basic Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Wireless > Wireless Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Wireless > Wireless MAC Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Wireless > Advanced Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Security > Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Security > VPN Passthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Access Restrictions > Internet Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Applications and Gaming > Port Range Forward. . . . . . . . . . . . . . . . . . . . . . . . . .15
Applications & Gaming > Port Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Applications and Gaming > DMZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Applications and Gaming > QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Administration > Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Administration > Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Administration > Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Administration > Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Administration > Upgrade Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Administration > Cong Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Status > Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Status > Local Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Status > Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Appendix A: Troubleshooting 22
Appendix B: Specications 23
Wireless-G Broadband Router ii
Table of Contents
Appendix C: Warranty and Regulatory Information 24
Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Wireless Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Safety Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Industry Canada (Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
IC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Règlement d’Industry Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste
Electric and Electronic Equipment (WEEE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Wireless-G Broadband Router iii
Chapter 1 Product Overview
Chapter 1:
Product Overview
Thank you for choosing the Linksys Wireless-G Broadband
Router. The Router lets you access the Internet via a
wireless connection, broadcast at up to 54 Mbps, 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 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
SecureEasySetup (Orange/White) The Cisco
logo is the Router’s SecureEasySetup button. It
lights up and will stay orange when the Router
is powered on. The color orange indicates that
the Router is not using the SecureEasySetup
feature, while the color white indicates that the
Router is using the SecureEasySetup feature.
When the Router enters SecureEasySetup
mode, the Cisco logo will turn white and
start flashing. After the Router has generated
the SSID and WPA Personal key, the Cisco
logo will stop flashing and stay white.
To clear the SSID and WPA Personal key, press
and hold down the Cisco logo for five seconds.
The Cisco logo will flash slowly as the Router
resets itself. The Cisco logo will turn orange to
indicate a successful reset.
NOTE: SecureEasySetup is a feature that makes
it easy to set up your wireless network. If you
have SecureEasySetup devices, run the Router’s
Setup Wizard CD-ROM and follow the on-
screen instructions to use SecureEasySetup.
Power (Green) 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.
DMZ (Green) The DMZ LED indicates when
the DMZ function is being used. This LED will
remain lit as long as DMZ is enabled.
WLAN (Green) The WLAN LED lights up when
the wireless feature is enabled. If the LED is
flashing, the Router is actively sending or
receiving data over the network.
1, 2, 3, 4 (Green) These numbered LEDs,
corresponding with the numbered ports on the
Router’s 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.
Internet (Green) The Internet LED lights up
when there is a connection made through the
Internet port. A flashing LED indicates network
activity over the Internet port.
Back Panel
Reset There are two ways to reset the Router’s
factory defaults. Either press and hold the Reset
Button for approximately five seconds, or restore
the defaults from Administration > Factory
Defaults in the Router’s web-based utility.
Internet The Internet port is where you will
connect your cable or DSL Internet connection.
1, 2, 3, 4 These Ethernet ports (1, 2, 3, 4) connect
the Router to PCs on your wired network and
other Ethernet network devices.
Power The Power port is where you will
connect the power adapter.
Wireless-G Broadband Router 1
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 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 device’s 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
Equivalency Privacy (WEP) offer different levels of security
for wireless communication. Currently, devices that are
Wi-Fi certified are required to support WPA2, but are not
required to support WEP.
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.linksys.com/security
Wireless-G Broadband Router 2
Chapter 3 Advanced Configuration
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’d like to change its advanced settings, use the
Router’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 Router.
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 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
web-based utility.
How to Access the Web-Based Utility
To access the web-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 password request screen will appear. (Non-Windows XP
users will see a similar screen.) Leave the User name field
blank. The first time you open the Web-based utility, use
the default password admin. (You can set a new password
from the Administration tab’s Management screen.) Click
OK to continue.
Password Screen
Setup > Basic Setup
The first screen that appears is the Basic Setup screen. This
allows you to change the Router’s general settings.
Setup > Basic Setup
Internet Setup
The Internet Setup section configures the Router to your
Internet connection. Most of this information can be
obtained through your ISP.
Internet Connection Type
Select the type of Internet connection your ISP provides
from the drop-down menu. The available types are:
•Automatic Configuration - DHCP
•Static IP
•PPPoE
•PPTP
•L2TP
•Telstra Cable
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
Wireless-G Broadband Router 3
Chapter 3 Advanced Configuration
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 Router’s 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 Router’s Subnet Mask, as seen
by users on the Internet (including your ISP). Your ISP will
provide you with the Subnet Mask.
Gateway Your ISP will provide you with the Gateway
Address, which is the ISP server’s IP address.
DNS 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
User Name and Password Enter the User Name 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.
PPTP
Point-to-Point Tunneling Protocol (PPTP) is a service that
applies to connections in Europe only.
Internet Connection Type > PPTP
Internet IP Address This is the Router’s 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 Router’s Subnet Mask, as seen
by users on the Internet (including your ISP). Your ISP will
provide you with the Subnet Mask.
Gateway Your ISP will provide you with the Gateway
Address.
User Name and Password Enter the User Name 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.
Wireless-G Broadband Router 4
Chapter 3 Advanced Configuration
L2TP
L2TP is a service that applies to connections in Israel only.
Internet Connection Type > L2TP
User Name and Password Enter the User Name and
Password provided by your ISP.
L2TP Server This is the IP address of the L2TP Server.
Your ISP will provide you with the IP Address you need to
specify here.
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. If your ISP uses HeartBeat Signal (HBS), then
select Telstra.
Internet Connection Type > Telstra Cable
User Name and Password Enter the User Name and
Password provided by your ISP.
Heart Beat Server This is the IP address of the Heartbeat
Server. Your ISP will provide you with the IP Address you
need to specify here.
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
Router Name In this field, you can enter a name of up to
39 characters to represent the Router.
Host Name/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 setting, 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
Wireless-G Broadband Router 5

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