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                        USER GUIDE
BUSINESS SERIES
10/100 4-Port  
VPN Router
Model: RV042                                                                                                                                                                                                                                                                                                                                                                                                                                                  
                    
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                        About This Guide Copyright and Trademarks About This Guide Linksys, Cisco and the Cisco Logo  are registered trademarks or  Icon Descriptions trademarks of Cisco Systems, Inc.  While reading through the User Guide you may see  and/or its affiliates in the U.S. and  various icons that call attention to specific items. Below is  certain other countries. Copyright   a description of these icons: © 2008 Cisco Systems, Inc.  All rights  reserved. Trend Micro,  InterScan, and  NOTE: This check mark in
                    
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                        Table of Contents Chapter 1: Introduction 1 Introduction to the Router. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction to VPNs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 VPN Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 VPN Router to VPN Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Computer (using VPN client s
                    
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                        Table of Contents One-to-One NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Setup > MAC Clone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 MAC Clone .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .17 Setup > DDNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 DDNS . . 
                    
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                        Table of Contents VPN > Client to Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 Add a New Tunnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 IPSec Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 VPN > VPN Client Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 VPN Client Access . . . . . . . . . . . . . . . . . . . .
                    
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                        Table of Contents Configuration of PC 1 and PC 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 Configuration when the Remote Gateway Uses a Dynamic IP Address . . . . . . . . . . . .64 Configuration of the RVL200. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 Configuration of the RV042 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 Configuration of PC 1 and PC 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
                    
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                        Table of Contents Appendix I: Warranty Information 82 Exclusions and Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82 Obtaining Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83 Appendix J: Software License Agreement 84 Software in Linksys Products: . . . . . . . . . . . . . . . . . . . . . . . . .
                    
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                        Introduction Chapter 1 For an IPSec VPN tunnel, the VPN Router and any computer  Chapter 1:   with the built-in IPSec Security Manager (Windows 2000  and XP) can create a VPN tunnel using IPSec (Windows  Introduction Vista uses a similar utility). Other Windows operating  systems require additional, third-party VPN client software  applications that support IPSec to be installed. Introduction to the Router Thank you for choosing the Linksys 10/100 4-Port VPN  NOTE: The 10/100 4-Port VPN Router s
                    
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                        Introduction Chapter 1 Computer (using VPN client software) to   VPN Router The following is an example of a computer-to-VPN Router  VPN. In her hotel room, a traveling businesswoman  connects to her Internet Service Provider (ISP). Her  notebook computer has VPN client software that is  configured with her office’s VPN settings. She accesses  the VPN client software and connects to the VPN Router  at the central office. As VPNs use the Internet, distance is  not a factor. Using the VPN, the bus
                    
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                        Product Overview Chapter 2 Reset The Reset button can be used for a warm  Chapter 2:   reset or a reset to factory defaults. Product Overview • Warm Reset If the Router is having   problems connecting to the Internet,  press and hold in the Reset button for a  Front Panel second using the tip of a pen. This is similar  to pressing the power button on your  computer to reboot it. • Reset to Factory Defaults If you are  experiencing extreme problems with  the Router and have tried all other  troub
                    
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                        Installation Chapter 3 Follow these instructions: Chapter 3:   1. Determine where you want to mount the Router. Make  sure that the wall you use is smooth, flat, dry, and  Installation  sturdy. Also make sure the location is within reach of  an electrical outlet. Physical Installation 2. Drill two holes into the wall. Make sure the holes are   57 mm (2.24 inches) apart. There are two ways to place the Router. The first way is  to place the Router horizontally on a surface. The second  3. Insert 
                    
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                        Installation Chapter 3 2. Connect one end of an Ethernet network cable to 5. Connect the included power adapter to the Router’s  one of the numbered ports on the back of the Router. Power port, and then plug the power adapter into an  Connect the other end to an Ethernet port on a electrical outlet. network device, such as a computer or switch. Repeat this step to connect more computers or other  network devices to the Router. Connect the Power 6. The System LED on the front panel will light up 
                    
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                        Advanced Configuration Chapter 4 System Summary Chapter 4:   The first screen that appears is the System Summary  Advanced Configuration screen, which displays the Router’s current status and  settings. This information is read-only. Underlined text  is hyperlinked to related setup pages, so if you click a  Overview hyperlink, the related setup screen will appear. On the  The Router’s web-based utility allows you to set up right-hand side of this screen and all other screens of the  the Router a
                    
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                        Advanced Configuration Chapter 4 System Up Time This is the length of time in days, hours,  and minutes that the Router has been active. The current  time and date are also displayed. Trend Micro™ ProtectLink Gateway The optional Trend Micro ProtectLink Gateway service  provides security for your network. It checks e-mail  messages, filters website addresses (URLs), and blocks  potentially malicious websites. NOTE: If the Trend Micro ProtectLink Gateway  options are not displayed on the System  
                    
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                        Advanced Configuration Chapter 4 DDNS It shows the DDNS settings of the Router’s WAN  port(s) and hyperlinks to the Setup > DDNS screen. DMZ Host It shows the DMZ private IP address and  hyperlinks to the Setup > DMZ Host screen. The default is  Disabled. Firewall Setting Status SPI (Stateful Packet Inspection) It shows the status   (On/Off) of the SPI setting and hyperlinks to the Firewall >  General screen. DoS (Denial of Service) It shows the status (On/Off) of  the DoS setting and hyperlinks
                    
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                        Advanced Configuration Chapter 4 be sent out, probably use incorrect settings,” will be  displayed. Setup Tab > Network The Network screen shows all of the Router’s basic setup  functions. The Router can be used in most network setups  without changing any of the default values; however,  you may need to enter additional information in order to  connect to the Internet through an ISP (Internet Service  Provider) or broadband (DSL or cable) carrier. The setup  information is provided by your ISP.
                    
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                        Advanced Configuration Chapter 4 If you want to modify a subnet you have created, select  Dual-WAN/DMZ Setting it and make changes. Click Save Settings to save your  Before configuring the WAN Connection Type settings,  changes, or click Cancel Changes to undo them. Click  select Dual WAN or DMZ. The Dual WAN setting allows you  Exit to return to the Network screen.  to simultaneously connect two broadband connections to  If you want to delete a subnet you have created, select it  the Router. On
                    
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                        Advanced Configuration Chapter 4 Service Name Enter the Service Name, if provided by  your ISP. Connect on Demand If you select the Connect on  Demand option, the connection will be disconnected  after a specified period of inactivity (Max Idle Time). If you  have been disconnected 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. Enter the number of minutes you want to  have elapsed befor
                    
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                        Advanced Configuration Chapter 4 Default Gateway Address Enter the IP address of the  default gateway. User Name and Password Enter your account’s User  Name and Password. The maximum number of characters  is 60. Connect on Demand If you select the Connect on  Demand option, the connection will be disconnected  DMZ (Subnet) after a specified period of inactivity (Max Idle Time). If you  Subnet To specify a subnet, select this option and  have been disconnected due to inactivity, Connect on  conf
                    
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                        Advanced Configuration Chapter 4 Daylight Saving To use the daylight saving feature, select  Enabled. Enter the Month and Day of the start date, and  then enter the Month and Day of the end date. NTP Server Enter the URL or IP address of the NTP server.  The default is time.nist.gov. Manual Setup > Password Password The User Name is admin; it cannot be changed. Old Password Enter the old password. The default is  admin when you first power up the Router.  New Password Enter a new password for th