Chapter 4: Planning Your Virtual Private Network (Vpn) - Linksys BEFVP41 User Manual

Note: The diagram above is for reference purposes only. Every
network is different. If you do not make a connection to a hub or
switch by using the settings above, change the position of the
Crossover Switch.
4. Connect the network cable from your cable or DSL modem to the WAN port
on your Router's rear panel. This is the only port that will work for your
modem connection.
5. Connect the power adapter to the Power port on the rear panel of the Router,
and then plug the power adapter into a power outlet.
Important: It is highly recommended that you plug your Router
into a power strip with surge protection.
• The Power LED on the front panel will light up green as soon as the power
adapter is connected properly.
• The Diag LED will light up red for a few seconds when the Router goes
through its self-diagnostic test. This LED will turn off when the self-test is
complete.
6. Turn on the cable or DSL modem.
7. Press the Reset button on the Router's front panel with a paper clip or a
pencil. Hold the button in until the Diag LED lights up and then turns off.
This will restore the Router's factory default settings.
The Hardware Installation is complete.
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Instant Broadband™ Series
Figure 3-1
EtherFast Cable/DSL VPN Router with 4-Port 10/100 Switch
®
Chapter 4: Planning Your Virtual
Private Network (VPN)
A VPN is a private network that sends data securely between two locations
across a public network, like the Internet. VPN was created as a cost-effective
alternative to using a private, dedicated, leased line for a private network. Using
industry standard encryption and authentication techniques, IPSec (IP
Security), the VPN creates a secure connection that, in effect, operates as if you
are directly connected to your local network. Virtual Private Networking can be
used to create secure networks linking a central office with branch offices,
telecommuters, and/or professionals on the road (travelers can connect to a
VPN Router using any computer with VPN client software that supports
IPSec).
There are two basic ways to create a VPN connection:
· VPN Router to VPN Router
· Computer (using VPN client software that supports IPSec) to VPN
Router
The VPN Router creates a "tunnel" or channel between two endpoints, so that
data transmissions between them are secure. A computer with VPN client soft-
ware that supports IPSec can be one of the two endpoints. Any computer with
the built-in IPSec Security Manager (Microsoft 2000 Professional, 2000
Advanced Server, XP Home, and XP Professional) allows the VPN Router to
create a VPN tunnel using IPSec (refer to "Appendix C: Configuring IPSec
between a Microsoft Windows 2000 or XP PC and a Linksys Cable/DSL VPN
Router"). Other versions of Microsoft operating systems require additional,
third-party VPN client software applications that support IPSec to be installed.
Important: If you are using a VPN Router connected to your cable or
DSL modem, do NOT use VPN client software on any of the PCs on
the LAN side. If you do, then you will be limited to one IP-Sec pass-
through session, the maximum number allowed by the VPN Router.
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