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Page 16 / 103 Scroll up to view Page 11 - 15
7
Chapter 2: Networking Basics
What is a VPN?
10/100 4-Port VPN Router
•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 software that supports IPSec can be one of the two endpoints. Any
computer with the built-in IPSec Security Manager (Microsoft 2000 and XP) allows the VPN Router to create a VPN
tunnel using IPSec). Other versions of Microsoft operating systems require additional, third-party VPN client
software applications that support IPSec to be installed.
VPN Router to VPN Router
An example of a VPN Router-to-VPN Router VPN would be as follows. (See Figure 2-1.) 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.
Computer (using VPN client software that supports IPSec) to VPN Router
The following is an example of a computer-to-VPN Router VPN. (See Figure 2-2.) In her hotel room, a traveling
businesswoman dials up her ISP. Her notebook computer has VPN client software that is configured with her
office's VPN settings. She accesses the VPN client software that supports IPSec 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.
Figure 2-2: Computer-to-VPN Router VPN
Figure 2-1: VPN Router-to-VPN Router VPN
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8
Chapter 3: Getting to Know the Router
The Front Panel
10/100 4-Port VPN Router
Chapter 3: Getting to Know the Router
The Front Panel
The Router’s LEDs are located on the front panel of the Router.
LEDs
System
Green. The
System
LED lights up when the Router is powered on. If the LED is flashing,
the Router is running a diagnostic test.
Diag
Orange. The
Diag
LED lights up when the system is not ready. The LED goes off when
the system is ready.
Internet
Green. The
Internet
LED lights up when the Router is connected to your cable or DSL
modem.
DMZ/Internet
Green. The
DMZ/Internet
LED lights up when the Router is connected to your cable or
DSL modem when used as an Internet port, and it lights up when the Router is
connected to the hub, switch, or public server when used as a DMZ port.
DMZ Mode
Green. The
DMZ Mode
LED lights up when the Router is using DMZ mode.
1-4 (LAN)
Green. The
LAN
LED serves two purposes. If the LED is continuously lit, the Router is
connected to a device through the corresponding port (1, 2, 3, or 4). If the LED is
flashing, the Router is actively sending or receiving data over that port.
Figure 3-1: Front Panel
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9
Chapter 3: Getting to Know the Router
The Back and Side Panels
10/100 4-Port VPN Router
The Back and Side Panels
The Router’s ports and Reset button are located on the back panel of the Router.
Reset Button
Reset Button
The Reset button can be used in one of two ways:
If the Router is having problems connecting to the Internet, press the Reset button for
just a second with a paper clip or a pencil tip. This is similar to pressing the Reset
button on your PC to reboot it.
If you are experiencing extreme problems with the Router and have tried all other
troubleshooting measures, press and hold in the Reset button for 30 seconds. This will
restore the factory defaults and clear all of the Router’s settings, such as port
forwarding or a new password.
Ports
1-4 (LAN)
These four
LAN
(
Ethernet)
ports connect to network devices, such as PCs, print
servers, or additional switches.
Internet (WAN1)
The
Internet
port connects to a cable or DSL modem.
DMZ/Internet (WAN2)
The
DMZ/Internet
port can be used in two different ways: a second Internet port, or
DMZ port. When used as an additional Internet port, it connects to a cable or DSL
modem. When used as a DMZ port, it connects to a hub, switch, or public server.
Figure 3-2: Back Panel
WAN1
LAN
WAN2
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10
Chapter 3: Getting to Know the Router
The Back and Side Panels
10/100 4-Port VPN Router
The power port is located on the right side panel of the Router.
Power
The
Power
port is where you will connect the included AC power cable.
‘
The security slot is located on the left side panel.
Security Slot
The security slot is where you can attach a lock so the Router will be protected from
theft.
Proceed to “Chapter 4: Connecting the Router.”
Figure 3-3: Right Side Panel
Figure 3-4: Left Side Panel
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11
Chapter 4: Connecting the Router
Overview
10/100 4-Port VPN Router
Chapter 4: Connecting the Router
Overview
To set up your network, you will do the following:
•
Connect the Router to one of your PCs according to the instructions in this chapter.
•
If necessary, configure your PCs to obtain an IP address automatically from the Router, according to “Chapter
5: Configuring the PCs.” (By default, Windows 98, 2000, Millennium, and XP computers are set to obtain an IP
address automatically, so unless you have changed the default setting, then you will not need to configure
your PCs.)
•
Set up and configure the Router with the setting(s) provided by your Internet Service Provider (ISP) according
to “Chapter 6: Set up and Configure the Router.”
The installation technician from your ISP should have left the setup information with you after installing your
broadband connection. If not, you can call your ISP to request the information. Once you have the setup
information for your specific type of Internet connection, then you can begin installation and setup of the Router.
Notebook with
Ethernet Adapter
PC with Ethernet
Adapter
Figure 4-1: Example of a Typical Network
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