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Chapter 3: Planning Your Virtual Private Network (VPN)
What is a VPN?
4-Port Gigabit Security Router with VPN
VPN Router to VPN Router
An example of a VPN Router-to-VPN Router VPN would be as follows. At home, a telecommuter uses his VPN
Router for his always-on Internet connection. His router is configured with his office's VPN settings. When he
connects to his office's router, the two routers create a VPN tunnel, encrypting and decrypting data. As VPNs
utilize the Internet, distance is not a factor. Using the VPN, the telecommuter now has a secure connection to the
central office's network, as if he were physically connected. For more information, refer to “Appendix D:
Configuring a Gateway-to-Gateway IPSec Tunnel.”
Computer (using the Linksys 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
dials up her ISP. Her notebook computer has the Linksys VPN client software, which is configured with her office's
IP address. She accesses the Linksys VPN client software and connects to the VPN Router at the central office. As
VPNs utilize the Internet, distance is not a factor. Using the VPN, the businesswoman now has a secure
connection to the central office's network, as if she were physically connected.
For additional information and instructions about creating your own VPN, please visit Linksys’s website at
www.linksys.com. You can also refer to “Appendix B: Using the Linksys QuickVPN Software for Windows 2000 or
XP”, “Appendix C: Configuring IPSec between a Windows 2000 or XP PC and the Router,” and “Appendix D:
Configuring a Gateway-to-Gateway IPSec Tunnel.”
Figure 3-1: VPN Router to VPN Router
Home Office
PC 2VPN RouterPC 1
Figure 3-2: Computer to VPN Router
Office
VPN Router
PC 2
Laptop running Linksys VPN Client Software
Off-site
RVS4000
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