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Appendix A: Troubleshooting

Common Problems and Solutions

10/100 8-Port VPN Router

A.

Go to the Linksys website at

and download the latest firmware, or use the

Web-based Utility to be automatically redirected to the download webpage. Go to System Management -

Firmware Upgrade, and click the

Firmware Download from Linksys Web Site

button. Select the Router

from the pull-down menu and choose the firmware from the options.

A.

Extract the firmware file on your computer.

B.

To upgrade the firmware, follow the steps in the Upgrade section found in

“Chapter 5: Setting Up and

Configuring the Router” or “Appendix F: Upgrading Firmware.”

13.The firmware upgrade failed.

The upgrade could have failed for a number of reasons.

Follow these steps to upgrade the firmware:

C.

Set a static IP address on the PC; refer to “Problem #1, I need to set a static IP address.” Use the following

IP address settings for the computer you are using:

IP Address: 192.168.1.50

Subnet Mask: 255.255.255.0

Gateway: 192.168.1.1

D.

Perform the upgrade using the Router’s Web-based Utility through its System Management => Firmware

Upgrade tab.

If the firmware upgrade failed, the Router will still work using its current firmware.

If you want to use a backup firmware version, go to System Management => Restart. Select

Backup

Firmware Version

. Click the

Restart Router

button to restart the Router.

14.My DSL service’s PPPoE is always disconnecting.

PPPoE is not actually a dedicated or always-on connection.

The DSL ISP can disconnect the service after a

period of inactivity, just like a normal phone dial-up connection to the Internet.

There is a setup option to

“keep alive” the connection.

This may not always work, so you may need to re-establish connection

periodically.

A.

To connect to the Router, go to the web browser, and enter

or the IP address of the

Router.

B.

Enter the password, if asked. (The default password is admin.)

C.

On the

Basic Setup

tab, select the option

Keep Alive

, and set the

Redial Period

option at

20

(seconds).

D.

Click the

Save Settings

button.

E.

Click the

Status

tab, and click the

Connect

button.

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Appendix A: Troubleshooting

Common Problems and Solutions

10/100 8-Port VPN Router

F.

You may see the login status display as Connecting. Press the

F5

key to refresh the screen, until you see

the login status display as Connected.

If the connection is lost again, follow steps E and F to re-establish connection.

15.I can't access my email, web, or VPN, or I am getting corrupted data from the Internet.

The Maximum Transmission Unit (MTU) setting may need to be adjusted. By default, the MTU is set at 1500.

For most DSL users, it is strongly recommended to use MTU 1492.

If you are having some difficulties,

perform the following steps:

A.

To connect to the Router, go to the web browser, and enter

or the IP address of the

Router.

B.

Enter the password, if asked. (The default password is

admin

.)

C.

Go to Firewall => General tab.

D.

Look for the MTU option, and select

Enable

. In the

Size

field, enter 1492.

E.

Click the

Save Settings

button to continue.

If your difficulties continue, change the Size to different values. Try this list of values, one value at a time, in

this order, until your problem is solved:

1462

1400

1362

1300

16.I need to use port triggering.

Port triggering looks at the outgoing port services used and will trigger the Router to open a specific port,

depending on which port an Internet application uses.

Follow these steps:

A.

To connect to the Router, go to the web browser, and enter

or the IP address of the

Router.

B.

Enter the password, if asked. (The default password is

admin

.)

C.

Click the

Setup

=>

Forwarding

tab.

D.

Enter any name you want to use for the Application Name.

E.

Enter the Start and End Ports of the Triggered Port Range. Check with your Internet application provider

for more information on which outgoing port services it is using.

F.

Enter the Start and End Ports of the Forwarded Port Range. Check with your Internet application provider

for more information on which incoming port services are required by the Internet application.

Once completed with the configuration, click the

Save Settings

button.

74

Appendix A: Troubleshooting

Frequently Asked Questions

10/100 8-Port VPN Router

17.When I enter a URL or IP address, I get a time-out error or am prompted to retry.

•

Check if other PCs work. If they do, ensure that your workstation’s IP settings are correct (IP Address,

Subnet Mask, Default Gateway, and DNS). Restart the computer that is having a problem.

•

If the PCs are configured correctly, but still not working, check the

Router. Ensure that it is connected and

powered on. Connect to it and check its settings. (If you cannot connect to it, check the LAN and power

connections.)

•

If the Router is configured correctly, check your Internet connection (DSL/cable modem, etc.) to see if it is

working correctly. You can remove the Router to verify a direct connection.

•

Manually configure the TCP/IP with a DNS address provided by your ISP.

•

Make sure that your browser is set to connect directly and that any dial-up is disabled. For Internet

Explorer, click

Tools

,

Internet Options

, and then the

Connection

tab. Make sure that Internet Explorer is

set to

Never dial a connection

. For Netscape Navigator, click

Edit

,

Preferences

,

Advanced

, and

Proxy

.

Make sure that Netscape Navigator is set to

Direct connection to the Internet

.

Frequently Asked Questions

What is the maximum number of IP addresses that the Router will support?

The Router will support up to 253 IP addresses.

Is IPSec Passthrough supported by the Router?

Yes, enable or disable IPSec Passthrough on the VPN => VPN Pass Through tab.

Where is the Router installed on the network?

In a typical environment, the Router is installed between the cable/DSL modem and the LAN. Plug the Router into

the cable/DSL modem’s Ethernet port.

Does the Router support IPX or AppleTalk?

No. TCP/IP is the only protocol standard for the Internet and has become the global standard for communications.

IPX, a NetWare communications protocol used only to route messages from one node to another, and AppleTalk,

a communications protocol used on Apple and Macintosh networks, can be used for LAN to LAN connections, but

those protocols cannot connect from the Internet to the LAN.

What is Network Address Translation and what is it used for?

Network Address Translation (NAT) translates multiple IP addresses on the private LAN to one public address that

is sent out to the Internet. This adds a level of security since the address of a PC connected to the private LAN is

never transmitted on the Internet. Furthermore, NAT allows the Router to be used with low cost Internet

accounts, such as DSL or cable modems, when only one TCP/IP address is provided by the ISP. The user may

have many private addresses behind this single address provided by the ISP.

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Appendix A: Troubleshooting

Frequently Asked Questions

10/100 8-Port VPN Router

Does the Router support any operating system other than Windows 98, Millennium, 2000, or XP?

Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of

any non-Windows operating systems.

Does the Router support ICQ send file?

Yes, with the following fix: click

ICQ menu

=>

preference

=>

connections

tab=>, and check

I am behind a

firewall or proxy

. Then set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then

send a file to a user behind the Router.

I set up an Unreal Tournament Server, but others on the LAN cannot join. What do I need to do?

If you have a dedicated Unreal Tournament server running, you need to create a static IP for each of the LAN

computers and forward ports 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. You can

also use a port forwarding range of 7777 to 27900. If you want to use the UT Server Admin, forward another port

(8080 usually works well but is used for remote admin. You may have to disable this.), and then in the

[UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and

ServerName to the IP assigned to the Router from your ISP.

Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP

address?

It depends on which network game or what kind of game server you are using.

For example, Unreal Tournament

supports multi-login with one public IP.

How do I get

Half-Life: Team Fortress

to work with the Router?

The default client port for Half-Life is 27005.

The computers on your LAN need to have “+clientport 2700x”

added to the HL shortcut command line; the x would be 6, 7, 8, and on up. This lets multiple computers connect

to the same server. One problem: Version 1.0.1.6 won’t let multiple computers with the same CD key connect at

the same time, even if on the same LAN (not a problem with 1.0.1.3).

As far as hosting games, the HL server does

not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer.

How can I block corrupted FTP downloads?

If you are experiencing corrupted files when you download a file with your FTP client, try using another FTP

program.

The web page hangs; downloads are corrupt, or nothing but junk characters are being displayed on the

screen. What do I need to do?

Force your Ethernet adapter to 10Mbps or half duplex mode, and turn off the “Auto-negotiate” feature of your

Ethernet adapter as a temporary measure. (Please look at the Network Control Panel in your Ethernet adapter’s

Advanced Properties tab.) Make sure that your proxy setting is disabled in the browser. Check our website at

www.linksys.com

for more information.

76

Appendix A: Troubleshooting

Frequently Asked Questions

10/100 8-Port VPN Router

If all else fails in the installation, what can I do?

Reset the Router by holding down the Reset button for ten seconds. Reset your cable or DSL modem by powering

the unit off and then on.

Obtain and flash the latest firmware release that is readily available on the Linksys

website,

www.linksys.com

.

How can I be notified of new Router firmware upgrades?

All Linksys firmware upgrades are posted on the Linksys website at

www.linksys.com

, where they can be

downloaded for free.

The Router’s firmware can be upgraded using the Web-based Utility. If the Router’s Internet

connection is working well, there is no need to download a newer firmware version, unless that version contains

new features that you would like to use.

Downloading a more current version of Router firmware will not

enhance the quality or speed of your Internet connection, and may disrupt your current connection stability.

Will the Router function in a Macintosh environment?

Yes, but the Router’s setup pages are accessible only through Internet Explorer 5.0 or Netscape Navigator 5.0 or

higher for Macintosh.

I am not able to get the web configuration screen for the Router. What can I do?

You may have to remove the proxy settings on your Internet browser, e.g., Netscape Navigator or Internet

Explorer.

Or remove the dial-up settings on your browser.

Check with your browser documentation, and make

sure that your browser is set to connect directly and that any dial-up is disabled. Make sure that your browser is

set to connect directly and that any dial-up is disabled. For Internet Explorer, click

Tools

,

Internet Options

, and

then the

Connection

tab. Make sure that Internet Explorer is set to

Never dial a connection

. For Netscape

Navigator, click

Edit

,

Preferences

,

Advanced

, and

Proxy

. Make sure that Netscape Navigator is set to

Direct

connection to the Internet

.

What is DMZ Hosting?

Demilitarized Zone (DMZ) allows one IP address (computer) to be exposed to the Internet.

Some applications

require multiple TCP/IP ports to be open.

It is recommended that you set your computer with a static IP if you

want to use DMZ Hosting. To get the LAN IP address, see “Appendix C: Finding the MAC Address and IP Address

for Your Ethernet Adapter.”

If DMZ Hosting is used, does the exposed user share the public IP with the Router?

No.

Does the Router pass PPTP packets or actively route PPTP sessions?

The Router allows PPTP packets to pass through.

Is the Router cross-platform compatible?

Any platform that supports Ethernet and TCP/IP is compatible with the Router.