Linksys RV0041 - 10/100/1000 VPN Router User manual

A Division of Cisco Systems, Inc.
®
Model No.
WIRED
VPN Router
10/100/1000 4-Port
RV0041
User Guide

10/100/1000 4-Port VPN Router
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.
This User Guide has been designed to make understanding networking with the Router easier than ever. Look for
the following items when reading this 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 Router.
word: definition.
This checkmark means there is a Note of interest and
is something you should pay special attention to while
using the Router.
This question mark provides you with a reminder about
something you might need to do while using the Router.
Figure 0-1: Sample Figure Description
RV0041-UG-50505 KL
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.

10/100/1000 4-Port VPN Router
Table of Contents
Chapter 1: Introduction 1
Welcome 1
What’s in this Guide? 2
Chapter 2: Networking Basics 4
An Introduction to LANs 4
The Use of IP Addresses 4
Why do I need a VPN? 5
What is a VPN? 6
Chapter 3: Getting to Know the Router 8
The Front Panel 8
The Back Panel 9
Chapter 4: Connecting the Router 10
Overview 10
Connection Instructions 11
Chapter 5: Setting Up and Configuring the Router 12
Overview 12
How to Access the Web-based Utility 15
System Summary Tab 15
Setup Tab - Network 18
Setup Tab - Password 20
Setup Tab - Time 20
Setup Tab - DMZ Host 21
Setup Tab - Forwarding 21
Setup Tab - UPnP Page 23
Setup Tab - One-to-One NAT 23
Setup Tab - MAC Clone 24
Setup Tab - DDNS 24
Setup Tab - Advanced Routing 25
DHCP Tab - Setup 27
DHCP Tab - Status 28
System Management Tab - SNMP 28
System Management Tab - Diagnostic 29

10/100/1000 4-Port VPN Router
System Management Tab - Factory Default 30
System Management Tab - Firmware Upgrade 30
System Management Tab - Restart 31
System Management Tab - Setting Backup 31
Port Management Tab - Port Setup 32
Port Management Tab - Port Status 33
Firewall Tab - General 34
Firewall Tab - Access Rules 35
Firewall Tab - Content Filter 37
VPN Tab - Summary 38
VPN Tab - Gateway to Gateway 40
VPN Tab - Client to Gateway 46
VPN Tab - VPN Pass Through 52
Log Tab - System Log 53
Log Tab - System Statistics 54
Wizard Tab 55
Support Tab 60
Logout Tab 60
Appendix A: Troubleshooting 61
Common Problems and Solutions 61
Frequently Asked Questions 71
Appendix B: Finding the MAC Address and IP Address for Your Ethernet Adapter 75
Windows 98 or Me Instructions 75
Windows 2000 or XP Instructions 75
For the Router’s Web-based Utility 76
Appendix C: Physical Setup of the Router 77
Setting up the Router 77
Appendix D: Battery Replacement 81
Replacing a Lithium Battery 81
Appendix E: Upgrading Firmware 82
Appendix F: Windows Help 83
Appendix G: Glossary 84
Appendix H: Specifications 88
Appendix I: Warranty Information 89

10/100/1000 4-Port VPN Router
Appendix J: Regulatory Information 90
Appendix K: Contact Information 91

10/100/1000 4-Port VPN Router
List of Figures
Figure 2-1: VPN Router-to-VPN Router VPN 7
Figure 2-2: Computer-to-VPN Router VPN 7
Figure 3-1: Front Panel 8
Figure 3-2: Back Panel 9
Figure 4-1: Example of a Typical Network 10
Figure 5-1: Router’s IP Address 15
Figure 5-2: Login Screen 15
Figure 5-3: System Summary 15
Figure 5-4: Site Map 16
Figure 5-5: Setup Tab - Network 18
Figure 5-6: WAN Connection Type - Obtain an IP Automatically 18
Figure 5-7: WAN Connection Type - Static IP 19
Figure 5-8: WAN Connection Type - PPPoE 19
Figure 5-9: WAN Connection Type - PPTP 19
Figure 5-10: Setup Tab - Password 20
Figure 5-11: Setup Tab - Time 20
Figure 5-12: Setup Tab - DMZ Host 21
Figure 5-13: Setup Tab - Forwarding 21
Figure 5-14: Port Range Forwarding - Service Management 22
Figure 5-15: Setup Tab - UPnP 23
Figure 5-16: Setup Tab - One-to-One NAT 23
Figure 5-17: Setup Tab - MAC Clone 24
Figure 5-18: Setup Tab - DDNS 24
Figure 5-19: Setup Tab - Advanced Routing 25
Figure 5-20: Setup Tab - Routing Table Entry List 26
Figure 5-21: DHCP Setup 27
Figure 5-22: DHCP Status 28
Figure 5-23: System Management Tab - SNMP 28

10/100/1000 4-Port VPN Router
Figure 5-24: System Management Tab - DNS Name Lookup 29
Figure 5-25: System Management Tab - Ping 29
Figure 5-26: System Management Tab - Factory Default 30
Figure 5-27: Are You Sure 30
Figure 5-28: System Management Tab - Firmware Upgrade 30
Figure 5-29: System Management Tab - Restart 31
Figure 5-30: System Management Tab - Setting Backup 31
Figure 5-31: Port Management Tab - Port Setup 32
Figure 5-32: Port Management Tab - Port Status 33
Figure 5-33: Firewall Tab - General 34
Figure 5-34: Firewall Tab - Access Rules 35
Figure 5-35: Firewall Tab - Content Filter 37
Figure 5-36: VPN Tab - Summary 38
Figure 5-37: VPN Tab - Summary Detail 39
Figure 5-38: VPN tab - Gateway to Gateway 40
Figure 5-39: VPN tab - Gateway to Gateway Local Group Setup 40
Figure 5-40: VPN tab - Gateway to Gateway Remote Group Setup 41
Figure 5-41: VPN tab - Gateway to Gateway IPSec Setup 42
Figure 5-42: VPN tab - Gateway to Gateway Advanced 45
Figure 5-43: VPN tab - Client to Gateway 46
Figure 5-44: VPN tab - Client to Gateway Local Group Setup 46
Figure 5-45: VPN tab - Client to Gateway Remote Group Setup 47
Figure 5-46: VPN tab - Client to Gateway IPSec Setup 49
Figure 5-47: VPN tab - Client to Gateway Advanced 51
Figure 5-48: VPN tab - VPN Pass Through 52
Figure 5-49: Log tab - System Log 53
Figure 5-50: Log tab - View Log 54
Figure 5-51: Log tab - System Statistics 54
Figure 5-52: Wizard tab 55
Figure 5-53: Basic Setup Wizard - Dual WAN or DMZ 55

10/100/1000 4-Port VPN Router
Figure 5-54: Basic Setup Wizard - Host and Domain Name 55
Figure 5-55: Basic Setup Wizard - Selecting WAN Connection Types 56
Figure 5-56: Basic Setup Wizard - Save Settings 56
Figure 5-57: Access Rule Wizard - What is Access Rules 57
Figure 5-58: Access Rule Wizard - Select the Action 57
Figure 5-59: Access Rule Wizard - Select the Service 58
Figure 5-60: Access Rule Wizard - Select the Source 58
Figure 5-61: Access Rule Wizard - Select the Destination 59
Figure 5-62: Access Rule Wizard - When it Works 59
Figure 5-63: Support tab 60
Figure 5-64: Access Rule Wizard - When it Works 60
Figure 5-65: Save Settings 60
Figure 5-66: Settings are Successful 60
Figure 5-67: Support 60
Figure B-1: IP Configuration Screen 75
Figure B-2: MAC Address/Adapter Address 75
Figure B-3: MAC Address/Physical Address 76
Figure B-4: MAC Address Clone 76
Figure C-1: Mounting Brackets 77
Figure C-2: Attaching the Brackets to the Router and Rack-Mounting the Router 78
Figure C-3: Wall-Mounting the Router 79
Figure C-4: Wall-Mounting Hardware 80
Figure E-1: Upgrade Firmware 82

1
Chapter 1: Introduction
Welcome
10/100/1000 4-Port VPN Router
Chapter 1: Introduction
Welcome
Thank you for choosing the 10/100/1000 4-Port VPN Router. The Linksys 10/100/1000 4-Port VPN Router is an
advanced Internet-sharing network solution for your small business needs. Like any router, it lets multiple
computers in your office share an Internet connection. But the 10/100/1000 4-Port VPN Router allows you to
connect gigabit-equipped PCs for gigabit networking, as well as including four 10/100/1000 ports for network
connectivity.
The Virtual Private Network (VPN) capability creates encrypted “tunnels” through the Internet, allowing up to 50
remote office or traveling users to securely connect into your office network from off-site. Users connecting
through a VPN tunnel are attached to your company's network — with secure access to files, e-mail, and your
intranet — just as if they were in the building. You can also use the VPN capability to allow users on your small
office network to securely connect out to a corporate network.
The 10/100/1000 4-Port VPN Router can serve as a DHCP Server, and has a powerful SPI firewall to protect your
PCs against intruders and most known Internet attacks. It can be configured to filter internal users' access to the
Internet, and has IP address filtering so you can specify exactly who has access to your network. Configuration is
a snap with the web browser-based configuration utility.
As the heart of your small office network, the 10/100/1000 4-Port VPN Router gives you the connection reliability
your business needs.
Ethernet: a network protocol that specifies how
data is placed on and retrieved from a common
transmission medium.
LAN (Local Area Network): the computers
and networking products that make up the
network in your home or office.
Bandwidth: the transmission capacity of
a given device or network
Browser: an application program that
provides a way to look at and interact with all
the information on the World Wide Web.
firewall: security measures that protect the
resources of a local network from intruders
Full-duplex: the ability of a networking device to
receive and transmit data simultaneously
IP: a protocol used to send data over a network
IP Address: the address used to identify a
computer or device on a network
network: a series of computers or devices
connected for the purpose of data sharing,
storage, and/or transmission between users

2
Chapter 1: Introduction
What’s in this Guide?
10/100/1000 4-Port VPN Router
What’s in this Guide?
This user guide covers the steps for setting up and using the 10/100/1000 4-Port VPN Router.
• Chapter 1: Introduction
This chapter describes the 10/100/1000 4-Port VPN Router and this User Guide.
• Chapter 2: Networking Basics
This chapter describes the basics of networking.
• Chapter 3: Getting to Know the 10/100/1000 4-Port VPN Router
This chapter describes the physical features of the Router.
• Chapter 4: Connecting the 10/100/1000 4-Port VPN Router
This chapter instructs you on how to connect the Router to your network.
• Chapter 5: Set Up and Configure the Router
This chapter explains how to use the Web-Based Utility to set up the Router and configure its settings.
• Appendix A: Troubleshooting
This appendix describes some problems and solutions, as well as frequently asked questions, regarding
installation and use of the 10/100/1000 4-Port VPN Router.
• Appendix B: 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 address cloning feature.
• Appendix C: Physical Setup of the Router
This appendix describes the physical setup of the Router, including the installation of the mounting brackets.
• Appendix D: Battery Replacement
This appendix instructs you how to replace the Router’s battery.
• Appendix E: Upgrading Firmware
This appendix instructs you on how to upgrade the Router’s firmware if you should need to do so.
• Appendix F: Windows Help
This appendix describes how you can use Windows Help for instructions about networking, such as installing
the TCP/IP protocol.
• Appendix G: Glossary
This appendix gives a brief glossary of terms frequently used in networking.
Adapter: a device that adds network functionality to your PC.
mac address: the unique address that a
manufacturer assigns to each networking