Linksys WRT54G3G-ST User manual

Model No.
Router for Mobile Broadband
Wireless-G
WRT54G3G-ST
User Guide
WIRELESS
GHz
802.11g
2.4

Wireless-G Router for Mobile Broadband
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 © 2006 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 Router for Mobile
Broadband 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”.
WARNING: This product contains chemicals, including lead, known
to the State of California to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
This exclamation point means there is a caution or warning and is
something that could damage your property or the Wireless-G Router
for Mobile Broadband.
This checkmark means there is a note of interest and is something
you should pay special attention to while using the Wireless-G Router
for Mobile Broadband.
This question mark provides you with a reminder about something
you might need to do while using the Wireless-G Router for Mobile
Broadband.
word: definition.
Figure 0-1: Sample Figure Description
WRT54G3G-ST-UG 60724NC BW

Wireless-G Router for Mobile Broadband
TableofContents
Chapter 1: Introduction 1
Welcome 1
What’s in this User 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 Router for Mobile Broadband 6
The Router’s Ports 6
The Router’s LEDs 7
The Router’s Data Card Slot 8
Chapter 4: Connecting the Wireless-G Router for Mobile Broadband 9
Overview 9
Hardware Installation for Use of the Mobile Broadband Service Only 9
Hardware Installation for Connection to Your Broadband Modem 11
Hardware Installation for Connection to Another Router 13
Placement Options 15
Chapter 5: Setting up the Wireless-G Router for Mobile Broadband Service 17
Overview 17
Before You Begin 17
Using the Setup Wizard 18
Chapter 6: Setting up the Wireless-G Router for Broadband WAN Service Only 27
Overview 27
Before You Begin 27
Using the Setup Wizard 27
Chapter 7: Setting up the Wireless-G Router for Broadband WAN
and Mobile Broadband Service 39
Overview 39
Before You Begin 39
Using the Setup Wizard 40
Chapter 8: Configuring the Wireless-G Router for Mobile Broadband 53
Overview 53

Wireless-G Router for Mobile Broadband
The Setup Tab - Basic Setup 54
The Setup Tab - Mobile Network 59
The Setup Tab - DDNS 60
The Setup Tab - MAC Address Clone 61
The Setup Tab - Advanced Routing 62
The Wireless Tab - Basic Wireless Settings 63
The Wireless Tab - Wireless Security 64
The Wireless Tab - Wireless MAC Filter 67
The Wireless Tab - Advanced Wireless Settings 68
The Security Tab - Firewall 70
The Security Tab - VPN Passthrough 71
The Access Restrictions Tab - Internet Access 71
The Applications and Gaming Tab - Port Range Forward 73
The Applications & Gaming Tab - Port Triggering 74
The Applications and Gaming Tab - DMZ 75
The Applications and Gaming Tab - QoS 75
The Administration Tab - Management 77
The Administration Tab - Log 78
The Administration Tab - Diagnostics 79
The Administration Tab - Factory Defaults 80
The Administration Tab - Firmware Upgrade 80
The Administration Tab - Config Management 80
The Status Tab - Mobile Network 81
The Status Tab - Router 82
The Status Tab - Local Network 83
The Status Tab - Wireless 84
Appendix A: Troubleshooting 85
Common Problems and Solutions 85
Frequently Asked Questions 93
Appendix B: Wireless Security 101
Security Precautions 101
Security Threats Facing Wireless Networks 101
Appendix C: Upgrading Firmware 104
Appendix D: Windows Help 105
Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter 106

Wireless-G Router for Mobile Broadband
Windows 98SE or Me Instructions 106
Windows 2000 or XP Instructions 106
For the Router’s Web-based Utility 107
Appendix F: Glossary 108
Appendix G: Specifications 113
Appendix H: Warranty Information 115
Appendix I: Regulatory Information 116
Appendix J: Contact Information 123

Wireless-G Router for Mobile Broadband
ListofFigures
Figure 3-1: The Router’s Ports 6
Figure 3-2: The Router’s Front Panel 6
Figure 3-3: The Router’s LEDs 7
Figure 3-4: The Router’s Data Card Slot 8
Figure 4-1: Connect Your Computer 10
Figure 4-2: Connect the Power 10
Figure 4-3: Connect the Broadband Modem 11
Figure 4-4: Connect Your Computer 12
Figure 4-5: Connect the Power 12
Figure 4-6: Diagram for Connection to Another Router 13
Figure 4-7: Connect Another Router 13
Figure 4-8: Connect Your Computer 14
Figure 4-9: Connect the Power 14
Figure 4-10: Stand Attached to the Router 15
Figure 4-11: Measurement between Wall-Mount Slots 16
Figure 5-1: Setup Wizard’s Welcome - Start Wizard Screen 18
Figure 5-2: Select Service Screen 19
Figure 5-3: Insert Mobile Broadband Data Card Screen 19
Figure 5-4: Connect the Router to a Computer Screen 20
Figure 5-5: Connect the Router to a Computer Screen, Continued 20
Figure 5-6: Power on the Router Screen 21
Figure 5-7: Check the Router’s Status Screen 21
Figure 5-8: Set the Router’s Password Screen 22
Figure 5-9: Wireless Settings Screen 22
Figure 5-10: Configure Wireless Security Settings Screen 23
Figure 5-11: Configure Wireless Security Settings - WPA2-PSK Screen 23
Figure 5-12: Configure Wireless Security Settings - WPA-PSK Screen 24
Figure 5-13: Configure Wireless Security Settings - WEP (128-Bit) Screen 24
Figure 5-14: Configure Wireless Security Settings - WEP (64-Bit) Screen 25
Figure 5-15: Warning about Disabled Wireless Security Screen 25
Figure 5-16: Confirm New Settings Screen 26

Wireless-G Router for Mobile Broadband
Figure 5-17: Mobile Broadband Connection Cannot be Established Screen 26
Figure 5-18: Congratulations Screen 26
Figure 6-1: Setup Wizard’s Welcome - Start Wizard Screen 27
Figure 6-2: Select Service Screen 28
Figure 6-3: Disconnect the Modem from the Computer Screen 28
Figure 6-4: Connect the Modem to the Router Screen 29
Figure 6-5: Connect the Router to a Computer Screen 29
Figure 6-6: Connect the Router to a Computer Screen, continued 30
Figure 6-7: Power on the Router Screen 31
Figure 6-8: Check the Router’s Status Screen 31
Figure 6-9: Configure Cable or DHCP Settings Screen 32
Figure 6-10: Configure DSL (PPPoE) Settings Screen 32
Figure 6-11: Enter Static IP Address Settings Screen 33
Figure 6-12: Confirm New Settings Screen 33
Figure 6-13: Set the Router’s Password Screen 34
Figure 6-14: Wireless Settings Screen 34
Figure 6-15: Configure Wireless Security Settings Screen 35
Figure 6-16: Configure Wireless Security Settings - WPA2-PSK Screen 35
Figure 6-17: Configure Wireless Security Settings - WPA-PSK Screen 36
Figure 6-18: Configure Wireless Security Settings - WEP (128-Bit) Screen 36
Figure 6-19: Configure Wireless Security Settings - WEP (64-Bit) Screen 37
Figure 6-20: Confirm New Settings Screen 37
Figure 6-21: Warning about Disabled Wireless Security Screen 38
Figure 6-22: Congratulations Screen 38
Figure 7-1: Setup Wizard’s Welcome - Start Wizard Screen 40
Figure 7-2: Select Service Screen 41
Figure 7-3: Insert Broadband Mobile Data Card Screen 41
Figure 7-4: Disconnect the Modem from the Computer Screen 42
Figure 7-5: Connect the Modem to the Router Screen 42
Figure 7-6: Connect the Router to a Computer Screen 43
Figure 7-7: Connect the Router to a Computer Screen, continued 43
Figure 7-8: Power on the Router Screen 44
Figure 7-9: Check the Router’s Status Screen 44
Figure 7-10: Configure Cable or DHCP Settings Screen 45

Wireless-G Router for Mobile Broadband
Figure 7-11: Configure DSL (PPPoE) Settings Screen 45
Figure 7-12: Enter Static IP Address Settings Screen 46
Figure 7-13: Confirm New Settings Screen 46
Figure 7-14: Set the Router’s Password Screen 47
Figure 7-15: Wireless Settings Screen 47
Figure 7-16: Configure Wireless Security Settings Screen 48
Figure 7-17: Configure Wireless Security Settings - WPA2-PSK Screen 48
Figure 7-18: Configure Wireless Security Settings - WPA-PSK Screen 49
Figure 7-19: Configure Wireless Security Settings - WEP (128-Bit) 49
Figure 7-20: Configure Wireless Security Settings - WEP (64-Bit) 50
Figure 7-21: Configure Wireless Security Settings - WEP (64-Bit) 50
Figure 7-22: Warning about Disabled Wireless Security Screen 51
Figure 7-23: Confirm New Settings 51
Figure 7-24: Mobile Broadband Connection Cannot be Established Screen 52
Figure 7-25: Congratulations Screen 52
Figure 8-1: Password Screen 53
Figure 8-2: Setup Tab - Basic Setup 54
Figure 8-3: DHCP Connection Type 54
Figure 8-4: Static IP Connection Type 55
Figure 8-5: PPPoE Connection Type 55
Figure 8-6: PPTP Connection Type 55
Figure 8-7: L2TP Connection Type 56
Figure 8-8: Optional Settings 56
Figure 8-9: Router IP 57
Figure 8-10: Network Address Server Settings 57
Figure 8-11: Time Setting 58
Figure 8-12: Setup Tab - Mobile Network 59
Figure 8-13: Setup Tab - DDNS (DynDNS.org) 60
Figure 8-14: Setup Tab - DDNS (TZO.org) 60
Figure 8-15: Setup Tab - MAC Address Clone 61
Figure 8-16: Setup Tab - Advanced Routing (Gateway) 62
Figure 8-17: Setup Tab - Advanced Routing (Router) 62
Figure 8-18: Wireless Tab - Basic Wireless Settings 63
Figure 8-19: Wireless Tab - Wireless Security (WPA2 Personal) 64

Wireless-G Router for Mobile Broadband
Figure 8-20: Wireless Tab - Wireless Security (WPA Personal - TKIP) 64
Figure 8-21: Wireless Tab - Wireless Security (WPA Personal - AES) 64
Figure 8-22: Wireless Tab - Wireless Security (WPA2 Enterprise) 65
Figure 8-23: Wireless Tab - Wireless Security (WPA Enterprise - TKIP) 65
Figure 8-24: Wireless Tab - Wireless Security (WPA Enterprise - AES) 65
Figure 8-25: Wireless Tab - Wireless Security (RADIUS) 66
Figure 8-26: Wireless Tab - Wireless Security (WEP) 66
Figure 8-27: Wireless Tab - Wireless MAC Filter 67
Figure 8-28: MAC Address Filter List 67
Figure 8-29: Wireless Tab - Advanced Wireless Settings 68
Figure 8-30: Security Tab - Firewall 70
Figure 8-31: Security Tab - VPN Passthrough 71
Figure 8-32: Access Restrictions Tab - Internet Access 71
Figure 8-33: Internet Policy Summary 72
Figure 8-34: List of PCs 72
Figure 8-35: Port Services 72
Figure 8-36: Applications and Gaming Tab - Port Range Forward 73
Figure 8-37: Applications and Gaming Tab - Port Triggering 74
Figure 8-38: Applications and Gaming Tab - DMZ 75
Figure 8-39: Applications and Gaming Tab - QoS 75
Figure 8-40: Administration Tab - Management 77
Figure 8-41: Administration Tab - Log 78
Figure 8-42: Administration Tab - Diagnostics 79
Figure 8-43: The Ping Test 79
Figure 8-44: The Traceroute Test 79
Figure 8-45: Administration Tab - Factory Defaults 80
Figure 8-46: Administration Tab - Firmware Upgrade 80
Figure 8-47: Administration Tab - Config Management 80
Figure 8-48: Status Tab - Mobile Network 81
Figure 8-49: Status Tab - Router 82
Figure 8-50: Status Tab - Local Network 83
Figure 8-51: Status Tab - Wireless 84
Figure C-1: Upgrade Firmware 104
Figure E-1: IP Configuration Screen 106

Wireless-G Router for Mobile Broadband
Figure E-2: MAC Address/Adapter Address 106
Figure E-3: MAC Address/Physical Address 106
Figure E-4: MAC Address Filter List 107
Figure E-5: MAC Address Clone 107