Linksys WRT54GX - Wireless-G Broadband Router User manual

A Division of Cisco Systems, Inc.
®
Model No.
Broadband Router
Wireless-G
WRT54GX (EU/LA/UK)
User Guide
WIRELESS with SRX
GHz
802.11g
2,4

Wireless-G Broadband Router with SRX
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 © 2005 Cisco Systems, Inc. All
rights reserved. Other brands and product names are trademarks or registered trademarks of their respective
holders.
How to Use This User Guide
This User Guide has been designed to make understanding networking with the Wireless-G Broadband Router
easier than ever. Look for the following items when reading this User Guide:
In addition to these symbols, there are definitions for technical terms that are presented like this:
Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like
this:
Figure numbers and descriptions can also be found in the “List of Figures” section in the “Table of Contents”.
This exclamation point means there is a caution or
warning and is something that could damage your
property or the Wireless-G Broadband Router.
Thischeckmarkmeans there is a note of interestand is
something you should pay special attention to while
using the Wireless-G Broadband Router.
This question mark provides you with a reminder about
something you might need to do while using the
Wireless-G Broadband Router.
word: definition.
Figure 0-1: Sample Figure Description
WRT54GX-EU-LA-UK-UG-50126NC JL

Wireless-G Broadband Router with SRX
Table of Contents
Chapter 1: Introduction 1
Welcome 1
What’s in this Guide? 2
Chapter 2: Planning Your Wireless Network 4
Network Topology 4
Ad-Hoc versus Infrastructure Mode 4
Network Layout 4
Chapter 3: Getting to Know the Wireless-G Broadband Router 6
The Back Panel 6
The Front Panel 7
Chapter 4: Connecting the Wireless-G Broadband Router 8
Overview 8
Hardware Installation for Connection to Your Broadband Modem 8
Chapter 5: Configuring the Wireless-G Broadband Router 9
Overview 9
The Setup Tab - Basic Setup 10
The Setup Tab - DDNS 15
The Setup Tab - MAC Address Clone 16
The Setup Tab - Advanced Routing 17
The Wireless Tab - Basic Wireless Settings 18
The Wireless Tab - Wireless Security 19
The Wireless Tab - Wireless MAC Filter 21
The Wireless Tab - Advanced Wireless Settings 22
The Security Tab - Firewall 23
The Access Restrictions Tab - Internet Access 24
The Applications and Gaming Tab - Port Range Forward 26
The Applications and Gaming Tab - Port Triggering 26
The Applications and Gaming Tab - DMZ 27
The Administration Tab - Management 28
The Administration Tab - Log 28
The Administration Tab - Diagnostics 29
The Administration Tab - Factory Defaults 29

Wireless-G Broadband Router with SRX
The Administration Tab - Firmware Upgrade 30
The Administration Tab - Config Management 30
The Status Tab - Router 31
The Status Tab - Local Network 32
The Status Tab - Wireless 33
The Status Tab - System Performance 34
Appendix A: Troubleshooting 36
Common Problems and Solutions 36
Frequently Asked Questions 45
Appendix B: Wireless Security 51
Security Precautions 51
Security Threats Facing Wireless Networks 51
Appendix C: Upgrading Firmware 54
Appendix D: Windows Help 55
Appendix E: Finding the MAC Address and IP Address for Your
Ethernet Adapter 56
Windows 98SE or Me Instructions 56
Windows 2000 or XP Instructions 57
For the Router’s Web-based Utility 57
Appendix F: Glossary 58
Appendix G: Specifications 64
Appendix H: Warranty Information 66
Appendix I: Regulatory Information 67
Appendix J: Contact Information 73

Wireless-G Broadband Router with SRX
List of Figures
Figure 3-1: The Router’s Back Panel 6
Figure 3-2: The Router’s Reset Button 6
Figure 3-3: The Router’s LEDs 7
Figure 4-1: The Router’s Ports 8
Figure 5-1: Password Screen 9
Figure 5-2: Setup Tab - Basic Setup 10
Figure 5-3: DHCP Connection Type 10
Figure 5-4: Static IP Connection Type 11
Figure 5-5: PPPoE Connection Type 11
Figure 5-6: PPTP Connection Type 12
Figure 5-7: Telstra BigPond Connection Type 12
Figure 5-8: Optional Settings 13
Figure 5-9: Router IP 13
Figure 5-10: Network Address Server Settings 14
Figure 5-11: Time Setting 14
Figure 5-12: Setup Tab - DDNS 15
Figure 5-13: Setup Tab - MAC Address Clone 16
Figure 5-14: Setup Tab - Advanced Routing 17
Figure 5-15: Wireless Tab - Basic Wireless Settings 18
Figure 5-16: Wireless Tab - Wireless Security (WPA Pre-Shared Key) 19
Figure 5-17: Wireless Tab - Wireless Security (WPA RADIUS) 19
Figure 5-18: Wireless Tab - Wireless Security (WEP w/64-bit Encryption) 20
Figure 5-19: Wireless Tab - Wireless Security (WEP w/128-bit Encryption) 20
Figure 5-20: Wireless Tab - Wireless MAC Filter 21
Figure 5-21: Wireless Tab - Advanced Wireless Settings 22
Figure 5-22: Security Tab - Firewall 23
Figure 5-23: Access Restrictions Tab - Internet Access 24
Figure 5-24: Internet Policy Summary 24
Figure 5-25: List of PCs 25
Figure 5-26: Port Services 25

Wireless-G Broadband Router with SRX
Figure 5-27: Applications and Gaming Tab - Port Range Forward 26
Figure 5-28: Applications and Gaming Tab - Port Triggering 26
Figure 5-29: Applications and Gaming Tab - DMZ 27
Figure 5-30: Administration Tab - Management 28
Figure 5-31: Administration Tab - Log 28
Figure 5-32: Administration Tab - Diagnostics 29
Figure 5-33: Administration Tab - Factory Defaults 29
Figure 5-34: Administration Tab - Firmware Upgrade 30
Figure 5-35: Administration Tab - Config Management 30
Figure 5-36: Status Tab - Router 31
Figure 5-37: Status Tab - Local Network 32
Figure 5-38: Status Tab - Wireless 33
Figure 5-39: Status Tab - System Performance 34
Figure C-1: Upgrade Firmware 54
Figure E-1: IP Configuration Screen 56
Figure E-2: MAC Address/Adapter Address 56
Figure E-3: MAC Address/Physical Address 56
Figure E-4: MAC Address Filter List 57
Figure E-5: MAC Address Clone 57

1
Chapter 1: Introduction
Welcome
Wireless-G Broadband Router with SRX
Chapter 1: Introduction
Welcome
Thank you for choosing the Linksys Wireless-G Broadband Router with SRX. The Wireless-G Broadband Router
with SRX will allow you to network wirelessly better than ever, sharing Internet access, files and fun, easily and
securely.
How does the Wireless-G Broadband Router with SRX do all of this? A router is a device that allows access to an
Internet connection over a network. With the Wireless-G Broadband Router with SRX, this access can be shared
over the four switched ports or via the wireless network, broadcast at either 11Mbps for Wireless-B or 54Mbps
for Wireless-G. In addition, WEP encryption provides greater security opportunities while the whole network is
protected through a Stateful Packet Inspection (SPI) firewall and NAT technology. All of these security features, as
well as full configurability, are accessed through the easy-to-use browser-based utility.
But what does all of this mean?
Networks are useful tools for sharing computer resources. You can access one printer from different computers
and access data located on another computer's hard drive. Networks are even used for playing multiplayer video
games. So, networks are not only useful in homes and offices, they can also be fun.
PCs on a wired network create a Local Area Network. They are connected with Ethernet cables, which is why the
network is called “wired”.
PCs equipped with wireless cards or adapters can communicate without cumbersome cables. By sharing the
same wireless settings, within their transmission radius, they form a wireless network. The Wireless-G
Broadband Router with SRX bridges wireless networks of both 802.11b and 802.11g standards and wired
networks, allowing them to communicate with each other.
With your networks all connected, wired, wireless, and the Internet, you can now share files and Internet
access—and even play games. All the while, the Wireless-G Broadband Router with SRX protects your networks
from unauthorized and unwelcome users.
You should always use the Setup CD-ROM when you first install the Router. If you do not wish to run the Setup
Wizard on the Setup CD-ROM, then use the instructions in this Guide to help you connect the Wireless-G
Broadband Router with SRX, set it up, and configure it to bridge your different networks. These instructions
should be all you need to get the most out of the Wireless-G Broadband Router with SRX.
lan (Local Area Network): The
computers and networking products
thatmakeupthenetworkinyourhome
or office
802.11b: an IEEE wireless networking standard
that specifies a maximum data transfer rate of
11Mbps and an operating frequency of 2.4GHz.
802.11b: an IEEE wireless networking standard
that specifies a maximum data transfer rate of
54Mbps, an operating frequency of 2.4GHz, and
backward compatibility with 802.11b devices.
browser: an application program that
provides a way to look at and interact with all
the information on the World Wide Web.
mbps: onemillion bits persecond; a unitof
measurement for data transmission

2
Chapter 1: Introduction
What’s in this Guide?
Wireless-G Broadband Router with SRX
What’s in this Guide?
This user guide covers the steps for setting up and using the Wireless-G Broadband Router with SRX.
• Chapter 1: Introduction
This chapter describes the Router’s applications and this User Guide.
• Chapter 2: Planning Your Wireless Network
This chapter describes the basics of wireless networking.
• Chapter 3: Getting to Know the Wireless-G Broadband Router
This chapter describes the Router’s physical features.
• Chapter 4: Connecting the Wireless-G Broadband Router
This chapter instructs you on how to connect the Router to your network.
• Chapter 5: Configuring the Wireless-G Broadband Router
This chapter explains how to use the Router’s Web-Based Utility.
• Appendix A: Troubleshooting
This appendix describes some problems and solutions, as well as frequently asked questions, regarding
installation and use of the Wireless-G Broadband Router.
• Appendix B: Wireless Security
This appendix explains the risks of wireless networking and some solutions to reduce the risks.
• Appendix C: Upgrading Firmware
This appendix instructs you on how to upgrade the Router’s firmware should you need to do so.
• Appendix D: Windows Help
This appendix describes how you can use Windows Help for instructions about networking, such as installing
the TCP/IP protocol.
• Appendix E: Finding the MAC Address and IP Address for your Ethernet Adapter.
This appendix describes how to find the MAC address for your computer’s Ethernet adapter so you can use
the Router’s MAC filtering and/or MAC address cloning feature.
• Appendix F: Glossary
This appendix gives a brief glossary of terms frequently used in networking.
• Appendix G: Specifications
This appendix provides the Router’s technical specifications.

3
Chapter 1: Introduction
What’s in this Guide?
Wireless-G Broadband Router with SRX
• Appendix H: Warranty Information
This appendix supplies the Router’s warranty information.
• Appendix I: Regulatory Information
This appendix supplies the Router’s regulatory information.
• Appendix J: Contact Information
This appendix provides contact information for a variety of Linksys resources, including Technical Support.

4
Chapter 2: Planning Your Wireless Network
Network Topology
Wireless-G Broadband Router with SRX
Chapter 2: Planning Your Wireless Network
Network Topology
A wireless local area network is exactly like a regular local area network (LAN), except that each computer in the
wireless network uses a wireless device to connect to the network. Computers in a wireless network share the
same frequency channel and SSID, which is an identification name shared by the wireless devices belonging to
the same wireless network.
Ad-Hoc versus Infrastructure Mode
Unlike wired networks, wireless networks have two different modes in which they may be set up: infrastructure
and ad-hoc. An infrastructure configuration is a wireless and wired network communicating to each other
through an access point. An ad-hoc configuration is wireless-equipped computers communicating directly with
each other. Choosing between these two modes depends on whether or not the wireless network needs to share
data or peripherals with a wired network or not.
If the computers on the wireless network need to be accessible by a wired network or need to share a peripheral,
such as a printer, with the wired network computers, the wireless network should be set up in Infrastructure
mode. The basis of Infrastructure mode centers around a wireless router or an access point, which serves as the
main point of communications in a wireless network. The Router transmits data to PCs equipped with wireless
network adapters, which can roam within a certain radial range of the Router. You can arrange the Router and
multiple access points to work in succession to extend the roaming range, and you can set up your wireless
network to communicate with your Ethernet hardware as well.
If the wireless network is relatively small and needs to share resources only with the other computers on the
wireless network, then the Ad-Hoc mode can be used. Ad-Hoc mode allows computers equipped with wireless
transmitters and receivers to communicate directly with each other, eliminating the need for a wireless router or
access point. The drawback of this mode is that in Ad-Hoc mode, wireless-equipped computers are not able to
communicate with computers on a wired network. And, of course, communication between the wireless-
equipped computers is limited by the distance and interference directly between them.
Network Layout
The Wireless-G Broadband Router has been specifically designed for use with both your 802.11b and 802.11g
products. Now, products using these standards can communicate with each other.
Infrastructure: a wireless network
that is bridged to a wired network via
an access point.
ssid: your wireless network’s name.
ad-hoc: a group of wireless devices
communicating directly to each other
(peer-to-peer) without the use of an
access point.
access point: a device that allows wireless-
equipped computers and other devices to
communicate with a wired network. Also used
to expand the range of a wireless network.
adapter: a device that adds
network functionality to your PC
ethernet: IEEE standard network protocol that
specifies how data is placed on and retrieved
from a common transmission medium
network: a series of computers or devices
connected for the purpose of data sharing,
storage, and/or transmission between users.

5
Chapter 2: Planning Your Wireless Network
Network Layout
Wireless-G Broadband Router with SRX
The Wireless-G Broadband Router is compatible with all 802.11b and 802.11g adapters, such as the Notebook
Adapters (WPC54G, WPC11) for your laptop computers, PCI Adapter (WMP54G, WMP11) for your desktop PC, and
USB Adapter (WUSB54G, WUSB11) when you want to enjoy USB connectivity. The Router will also communicate
with the Wireless PrintServer (WPS54G) and Wireless Ethernet Bridges (WET54G, WET11).
When you wish to connect your wireless network with your wired network, you can use the Wireless-G
Broadband Router’s four LAN ports. To add more ports, any of the Wireless-G Broadband Router's LAN ports can
be connected to any of Linksys's switches (such as the SD205 or SD208).
With these, and many other, Linksys products, your networking options are limitless. Go to the Linksys website at
www.linksys.com/international for more information about products that work with the Wireless-G Broadband
Router.

6
Chapter 3: Getting to Know the Wireless-G Broadband Router
The Back Panel
Wireless-G Broadband Router with SRX
Chapter 3: Getting to Know the Wireless-G Broadband Router
The Back Panel
The Router's ports, where the cables are connected, are
located on the back panel.
Reset Button There are two ways to reset the Router's
factory defaults. Either press the Reset
Button located on the bottom of the
Router, for approximately five seconds, or
restore the defaults from the
Administrationtab- FactoryDefaults inthe
Router's Web-based Utility.
Internet The Internet port in blue is where you will
connect your broadband Internet
connection.
1, 2, 3, 4 These yellow 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.
Important: Resetting the Router will erase all
of your settings (WEP Encryption, network
settings, etc.) and replace them with the
factory defaults. Do not reset the Router if you
want to retain these settings.
Figure 3-1: The Router’s Back Panel broadband: an always-on, fast Internet connection
port: the connection point ona computer or networking
device used for plugging in cables or adapters
Figure 3-2: The Router’s Reset Button

7
Chapter 3: Getting to Know the Wireless-G Broadband Router
The Front Panel
Wireless-G Broadband Router with SRX
The Front Panel
The Router’s LEDs, where information about network activity is displayed, are located on the front panel.
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 po
Internet Green. The Internet LED lights up when there is a connection made through the Internet
port.rt. A flashing LED indicates network activity over that port.
Wireless Green. The Wireless LED lights up whenever there is a successful wireless connection. If the
LED is flashing, the Router is actively sending or receiving data over the network.
DMZ Green. The DMZ LED indicates when the DMZ function is being used. This LED will remain lit
as long as DMZ is enabled.
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. Figure 3-3: The Router’s LEDs
dmz: removes the Router's firewall protection from
one PC, allowing it to be “seen” from the Internet

8
Chapter 4: Connecting the Wireless-G Broadband Router
Overview
Wireless-G Broadband Router with SRX
Chapter 4: Connecting the Wireless-G Broadband Router
Overview
This chapter includes two sets of instructions. If the Wireless-G Broadband Router will be the only router in your
network, follow the instructions in “Hardware Installation for Connection to Your Broadband Modem.” If you want
to install the Wireless-G Broadband Router behind another router in your network, follow the instructions in
“Connecting One Router to Another.”
Hardware Installation for Connection to Your Broadband Modem
1. Power down your network devices.
2. Locate an optimum location for the Router. The best place for the Router is usually at the center of your
wireless network, with line of sight to all of your mobile stations.
3. Fix the direction of the antennas. Try to place the Router in a position that will best cover your wireless
network. Normally, the higher you place the antenna, the better the performance will be.
4. Connect a standard Ethernet network cable to the Router’s blue Internet port. Then, connect the other end of
the Ethernet cable to your cable or DSL broadband modem.
5. Connect your network PCs or Ethernet devices to the Router’s yellow ports using standard Ethernet network
cabling.
6. Connect the AC power adapter to the Router's Power port and the other end into an electrical outlet. Only use
the power adapter supplied with the Router. Use of a different adapter may result in product damage.
Now that the hardware installation is complete, proceed to “Chapter 5: Configuring the Wireless-G
Broadband Router,” for directions on using the Router’s Web-Based Utility to configure the Router’s
settings for your network. Figure 4-1: The Router’s Ports
IMPORTANT: Make sure you use the power adapter that is supplied with the Router.
Use of a different power adapter could damage the Router.

9
Chapter 5: Configuring the Wireless-G Broadband Router
Overview
Wireless-G Broadband Router with SRX
Chapter 5: Configuring the Wireless-G Broadband Router
Overview
You should always use the Setup CD-ROM when first installing the Router. If you do not wish to run the Setup
Wizard on the Setup CD-ROM, you can use the Web-based Utility to configure the Router. For advanced users, you
may configure the Router’s advanced settings through the Web-based Utility.
This chapter will describe each web page in the Utility and each page’s key functions. The utility canbe accessed
via your web browser through use of a computer connected to the Router. For a basic network setup, most users
will use these two screens of the Utility:
• Basic Setup. On the Basic Setup screen, enter the settings provided by your ISP.
• Management. Click the Administration tab and then the Management tab. The Router’s default password is
admin. To secure the Router, change the Password from its default.
Thereare seven main tabs:Setup,Wireless,Security, AccessRestrictions, Applications & Gaming,Administration,
and Status. Additional tabs will be available after you click one of the main tabs.
To access the Web-based Utility, launch Internet Explorer or Netscape Navigator, and enter the Router’s default IP
address, 192.168.1.1, in the Address field. Then, press Enter.
A password request page 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 the OK button to continue.
HAVE YOU: Enabled TCP/IP on your PCs? PCs
communicate over the network with this protocol.
Refer to “Appendix D: Windows Help” for more
information on TCP/IP.
Figure 5-1: Password Screen

10
Chapter 5: Configuring the Wireless-G Broadband Router
The Setup Tab - Basic Setup
Wireless-G Broadband Router with SRX
The Setup Tab - Basic Setup
The first screen that appears displays the Setup tab. This allows you to change the Router's general settings.
Change these settings as described here and click the Save Settings button to apply your changes or Cancel
Changes to cancel your changes.
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
Choose the type of Internet connection your ISP provides from the drop down menu.
•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.
Figure 5-2: Setup Tab - Basic Setup
Figure 5-3: DHCP Connection Type

11
Chapter 5: Configuring the Wireless-G Broadband Router
The Setup Tab - Basic Setup
Wireless-G Broadband Router with SRX
•Static IP. If you are required to use a permanent IP address to connect to the Internet, select 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.
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. If you wish to activate Connect on Demand, click the radio
button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet
connection terminates.
Keep Alive Option: 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, click the radio button next to 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.
Figure 5-5: PPPoE Connection Type
pppoe: a type of broadband connection that
provides authentication (username and
password) in addition to data transport
Figure 5-4: Static IP Connection Type
static ip address: a fixed address
assigned to a computer or device
connected to a network.

12
Chapter 5: Configuring the Wireless-G Broadband Router
The Setup Tab - Basic Setup
Wireless-G Broadband Router with SRX
•PPTP. Point-to-Point Tunneling Protocol (PPTP) is a service that applies to connections in Europe only.
Specify 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. If you wish to activate Connect on Demand, click the radio
button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet
connection terminates.
Keep Alive Option: 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, click the radio button next to 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 BigPond. Telstra BigPond is a service that applies to connections in Australia only.
User Name and Password. Enter the User Name and Password provided by your ISP.
Heart Beat Server. This is the IP address that the Router has, when seen from the Internet. Your ISP will
provide you with the IP Address you need to specify here.
Figure 5-7: Telstra BigPond Connection Type
Figure 5-6: PPTP Connection Type

13
Chapter 5: Configuring the Wireless-G Broadband Router
The Setup Tab - Basic Setup
Wireless-G Broadband Router with SRX
Optional Settings
Some of these settings may be required by your ISP. Verify with your ISP before making any changes.
Router Name. In this field, you can type 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. The default setting, Manual, allows you to enter the largest packet size that will be transmitted.
The recommended size, entered in the Size field, is 1492. You should leave this value in the 1200 to 1500 range.
To have the Router select the best MTU for your Internet connection, select Auto.
Network Setup
The Network Setup section changes the settings on the network connected to the Router’s Ethernet ports.
Wireless Setup is performed through the Wireless tab.
Router IP
This presents both the Router’s IP Address and Subnet Mask as seen by your network.
Figure 5-9: Router IP
Figure 5-8: Optional Settings
packet: a unit of data sent over a network

14
Chapter 5: Configuring the Wireless-G Broadband Router
The Setup Tab - Basic Setup
Wireless-G Broadband Router with SRX
Network Address Server Settings (DHCP)
The settings allow you to configure the Router’s 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 Router’s DHCP server option, you must configure all
of your network PCs to connect to a DHCP server (the Router), and make sure there is no other DHCP server on
your network.
DHCP Server. DHCP is enabled by factory default. If you already have a DHCP server on your network, or you
don’t want a DHCP server, then click the Disable radio button (no other DHCP features will be available).
Starting IP Address. Enter a value for the DHCP server to start with when issuing IP addresses. Because the
Router’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 Starting IP Address is 192.168.1.100.
Maximum Number of DHCP Users. Enter the maximum number of PCs that you want the DHCP server to assign
IP addresses to. This number cannot be greater than 253. The default is 50.
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 is up, the user will be automatically assigned a new dynamic IP address.
The default is 0 minutes, which means one day.
Static DNS (1,2). 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, type that IP Address in one of these fields. You can type up to three DNS Server IP Addresses here. The
Router will use these for quicker access to functioning DNS servers.
Time Setting
Change the time zone in which your network functions from this pull-down menu. (You can even automatically
adjust for daylight savings time.)
Figure 5-11: Time Setting
Figure 5-10: Network Address Server Settings