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42
Chapter 6: Setting Up and Configuring the Router
Status Tab
4-Port Gigabit Security Router with VPN
DHCP Server
. The status of the Router's DHCP server function is displayed here.
Start IP Address
. This shows the beginning of the range of IP addresses used by the DHCP Server.
End IP Address
. This shows the end of the range of IP addresses used by the DHCP Server.
DHCP Client Table
. Clicking this button will open a screen showing you which PCs are utilizing the Router as a
DHCP server. On the DHCP Client Table screen, you will see a list of DHCP clients (PCs and other network devices)
with the following information: Client Names, Interfaces, IP Addresses, MAC Addresses, and the length of time
before their assigned IP addresses expire.
ARP/RARP Table
. Clicking this button will open a screen showing you which PCs are utilizing the Router as a
ARP/RARP server. On the ARP/RARP Table screen, you will see a list of ARP/RARPs (PCs and other network
devices) with the following information: IP Addresses and MAC Addresses.
VPN Clients
Username
. Displays the username of the VPN Client.
Status
. Displays the connection status of the VPN Client.
Start Time
. Displays the start time of the most recent VPN session for the specified VPN Client.
End Time
. Displays the end time of a VPN session if the VPN Client has disconnected.
Duration
. Displays the total connection time of the latest VPN session.
Refresh
button. Updates the screen with the latest VPN Client information.
Disconnect
button. Check the Disconnect box and click the
Disconnect
button to disconnect a VPN Client.
Figure 6-44: VPN Clients
Figure 6-43: Local Network
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43
Appendix A: Troubleshooting
Common Problems and Solutions
4-Port Gigabit Security Router with VPN
Appendix A: Troubleshooting
This appendix provides solutions to problems that may occur during the installation and operation of the Router.
Read the descriptions below to help solve your problems. If you can't find an answer here, check the Linksys
website at
www.linksys.com
.
Common Problems and Solutions
1.
I need to set a static IP address on a PC.
The Router, by default, assigns an IP address range of 192.168.1.100 to 192.168.1.149 using the DHCP server
on the Router. To set a static IP address, you can only use the ranges 192.168.1.2 to 192.168.1.99 and
192.168.1.150 to 192.168.1.254. Each PC or network device that uses TCP/IP must have a unique address to
identify itself in a network. If the IP address is not unique to a network, Windows will generate an IP conflict
error message. You can assign a static IP address to a PC by performing the following steps:
For Windows 98 and Millennium:
A.
Click
Start
,
Setting
, and
Control Panel
. Double-click
Network
.
B.
In
The following network components are installed
box, select the
TCP/IP
-> associated with your
Ethernet adapter. If you only have one Ethernet adapter installed, you will only see one TCP/IP line with no
association to an Ethernet adapter. Highlight it and click the
Properties
button.
C.
In the
TCP/IP properties
window, select the
IP address
tab, and select
Specify an IP address
. Enter a
unique IP address that is not used by any other computer on the network connected to the Router. You can
only use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to 192.168.1.254.
Make sure that each IP address is unique for each PC or network device.
D.
Click the
Gateway
tab, and in the
New Gateway
prompt, enter
192.168.1.1
, which is the default IP
address of the Router. Click the
Add
button to accept the entry.
E.
Click the
DNS
tab, and make sure the
DNS Enabled
option is selected. Enter the Host and Domain names
(e.g., John for Host and home for Domain). Enter the DNS entry provided by your ISP. If your ISP has not
provided the DNS IP address, contact your ISP to get that information or go to its website for the
information.
F.
Click the
OK
button in the
TCP/IP properties
window, and click
Close
or the
OK
button for the
Network
window.
G.
Restart the computer when asked.
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44
Appendix A: Troubleshooting
Common Problems and Solutions
4-Port Gigabit Security Router with VPN
For Windows 2000:
A.
Click
Start
,
Settings
, and
Control Panel
. Double-click
Network and Dial-Up Connections
.
B.
Right-click the
Local Area Connection
that is associated with the Ethernet adapter you are using, and
select the
Properties
option.
C.
In the
Components checked are used by this connection
box, highlight
Internet Protocol (TCP/IP)
, and
click the
Properties
button. Select
Use the following IP address
option.
D.
Enter a unique IP address that is not used by any other computer on the network connected to the Router.
You can only use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to
192.168.1.254.
E.
Enter the Subnet Mask,
255.255.255.0
.
F.
Enter the Default Gateway,
192.168.1.1
(Router’s default IP address).
G.
Toward the bottom of the window, select
Use the following DNS server addresses
, and enter the
Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its
website to find the information.
H.
Click the
OK
button in the
Internet Protocol (TCP/IP) Properties
window, and click the
OK
button in the
Local Area Connection Properties
window.
I.
Restart the computer if asked.
For Windows XP:
The following instructions assume you are running Windows XP with the default interface. If you are using the
Classic interface (where the icons and menus look like previous Windows versions), please follow the
instructions for Windows 2000.
A.
Click
Start
and
Control Panel
.
B.
Click the
Network and Internet Connections
icon and then the
Network Connections
icon.
C.
Right-click the
Local Area Connection
that is associated with the Ethernet adapter you are using, and
select the
Properties
option.
D.
In the
This connection uses the following items
box, highlight
Internet Protocol (TCP/IP)
. Click the
Properties
button.
E.
Enter a unique IP address that is not used by any other computer on the network connected to the Router.
You can only use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to
192.168.1.254.
F.
Enter the Subnet Mask,
255.255.255.0
.
G.
Enter the Default Gateway,
192.168.1.1
(Router’s default IP address).
H.
Toward the bottom of the window, select
Use the following DNS server addresses
, and enter the
Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its
website to find the information.
I.
Click the
OK
button in the
Internet Protocol (TCP/IP) Properties
window. Click the
OK
button in the
Local
Area Connection Properties
window.
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45
Appendix A: Troubleshooting
Common Problems and Solutions
4-Port Gigabit Security Router with VPN
2.
I want to test my Internet connection.
A.
Check your TCP/IP settings.
For Windows 98 and Millennium:
Refer to Windows Help for details. Make sure
Obtain IP address automatically
is selected in the settings.
For Windows 2000:
1.
Click
Start
,
Settings
, and
Control Panel
. Double-click
Network and Dial-Up Connections
.
2.
Right-click the
Local Area Connection
that is associated with the Ethernet adapter you are using,
and select the
Properties
option.
3.
In the
Components checked are used by this connection
box, highlight
Internet Protocol (TCP/IP)
,
and click the
Properties
button. Make sure that
Obtain an IP address automatically
and
Obtain
DNS server address automatically
are selected.
4.
Click the
OK
button in the
Internet Protocol (TCP/IP) Properties
window, and click the
OK
button in the
Local Area Connection Properties
window.
5.
Restart the computer if asked.
6.
Click the
OK
button in the
Internet Protocol (TCP/IP) Properties
window, and click the
OK
button in the
Local Area Connection Properties
window.
7.
Restart the computer if asked.
For Windows XP:
The following instructions assume you are running Windows XP with the default interface. If you are using the
Classic interface (where the icons and menus look like previous Windows versions), please follow the
instructions for Windows 2000.
1.
Click
Start
and
Control Panel
.
2.
Click the
Network and Internet Connections
icon and then the
Network Connections
icon.
3.
Right-click the
Local Area Connection
that is associated with the Ethernet adapter you are using,
and select the
Properties
option.
4.
In the
This connection uses the following items
box, highlight
Internet Protocol (TCP/IP)
, and click
the
Properties
button. Make sure that
Obtain an IP address automatically
and
Obtain DNS server
address automatically
are selected.
B.
Open a command prompt.
For Windows 98 and Millennium, click
Start
and
Run
. In the
Open
field, type
command
. Press the
Enter
key or click the
OK
button.
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46
Appendix A: Troubleshooting
Common Problems and Solutions
4-Port Gigabit Security Router with VPN
For Windows 2000 and XP, click
Start
and
Run
. In the
Open
field, type
cmd
. Press the
Enter
key or
click the
OK
button.
C.
In the command prompt, type
and press the
Enter
key.
If you get a reply, the computer is communicating with the Router.
If you do NOT get a reply, check the cable, and make sure
Obtain an IP address automatically
is
selected in the TCP/IP settings for your Ethernet adapter.
D.
In the command prompt, type
ping
followed by your Internet IP address and press the
Enter
key. The
Internet IP Address can be found in the web interface of the Router. For example, if your Internet IP
address is 1.2.3.4, you would enter
ping 1.2.3.4
and press the
Enter
key.
If you get a reply, the computer is connected to the Router.
If you do NOT get a reply, try the ping command from a different computer to verify that your original
computer is not the cause of the problem.
E.
In the command prompt, type
ping www.linksys.com
and press the
Enter
key.
If you get a reply, the computer is connected to the Internet. If you cannot open a webpage, try the
ping command from a different computer to verify that your original computer is not the cause of the
problem.
If you do NOT get a reply, there may be a problem with the connection. Try the ping command from a
different computer to verify that your original computer is not the cause of the problem.
3.
I am not getting an IP address on the Internet with my Internet connection.
A.
Refer to “Problem #2, I want to test my Internet connection” to verify that you have connectivity.
B.
If you need to register the MAC address of your Ethernet adapter with your ISP, please see “Appendix E:
Finding the MAC Address and IP Address for Your Ethernet Adapter.” If you need to clone the MAC address
of your Ethernet adapter onto the Router, see the MAC Address Clone section of “Chapter 6: Setting Up
and Configuring the Router” for details.
C.
Make sure you are using the right Internet settings. Contact your ISP to see if your Internet connection
type is DHCP, Static IP Address, or PPPoE (commonly used by DSL consumers). Please refer to the Basic
Setup section of “Chapter 6: Setting Up and Configuring the Router” for details on Internet Connection
Type settings.
D.
Make sure you use the right cable. Check to see if the Internet LED is solidly lit.
E.
Make sure the cable connecting from your cable or DSL modem is connected to the Router’s Internet port.
Verify that the Status page of the Router’s Web-based Utility shows a valid IP address from your ISP.
F.
Turn off the computer, Router, and cable/DSL modem. Wait 30 seconds, and then turn on the Router,
cable/DSL modem, and computer. Check the System Summary tab of the Router’s Web-based Utility to
see if you get an IP address.
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