Linksys BEFVP41v1 Router Manual PDF (Setup & Configuration Guide)

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Appendix E: How to Ping Your

ISP’s E-mail & Web Addresses

Virtually all Internet addresses are configured with words or characters (i.e.,

www.linksys.com, www.yahoo.com, etc.) In actuality, however, these Internet

addresses are assigned to IP addresses, which are the true addresses on the

Internet. For example, www.linksys.com is actually 206.135.116.3. Type it into

your web browser and you will wind up at the Linksys home page every time.

IP and web addresses, however, can sometimes be long and hard to remember.

Because of this, certain ISPs will shorten their server addresses to single words

or codes on their users’ web browser or e-mail configurations. If your ISP’s E-

mail and Web server addresses are configured with single words (“www”, “e-

mail”, “home”, “pop3”, etc.) rather than whole Internet Addresses or IP

Addresses, the Router may have problems sending or receiving mail and

accessing the Internet. This happens because the Router has not been config-

ured by your ISP to accept their abbreviated server addresses.

The solution is to determine the true web addresses behind your ISPs code

words. You can determine the IP and web addresses of your ISP’s servers by

“pinging” them.

Important:

If you don’t have your ISP’s web and e-mail IP

Addresses, you

must

either get them from your ISP or follow

these steps

prior

to connecting the Router to your network.

Appendix D: SNMP Functions

SNMP (

imple

etwork

anagement

rotocol) is a widely-used network

monitoring and control protocol. Data is passed from a SNMP agent, such as

the VPN Router,

to the workstation console used to oversee the network. The

Router then returns information contained in a MIB (Management Information

Base), which is a data structure that defines what is obtainable from the device

and what can be controlled (turned off, on, etc.).

SNMP functions, such as statistics, configuration, and device information, are

not available without third-party Management Software. The Router is com-

patible with all HP Openview compliant software.

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EtherFast

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Step Two: Pinging for a Web Address

While the IP address returned above would work as your e-mail server address,

it may not be permanent. IP Addresses change all the time. Web addresses,

however, usually don’t. Because of this, you’re likely to have less problems by

configuring your system with web addresses rather than IP addresses. Follow

the instructions below to find the web address assigned to the IP address you

just pinged.

At the DOS command prompt

, type

ping -a 24.53.32.4

, where 24.53.32.4

is the IP address you just pinged. Information such as the following data

will be displayed:

C:\>ping -a 24.53.32.4

Pinging mail.msnv3.occa.home.com [24.53.32.4] with 32

bytes of data:

Reply from 24.53.32.4: bytes=32 time<10ms TTL=127

Ping statistics for 24.53.32.4:

Packets: Sent = 4, Received = 4, Lost = 0 (0%

loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum =

0ms, Average =

0ms

Write down the web address returned by the ping command

. (In the

example above: mail.msnv3.occa.home.com.) This web address is the web

address assigned to the IP address you just pinged. While the IP address of

“mail” could conceivably change, it is likely that this web address will not.

Replace your ISP’s abbreviated server address

with this extended web

address in the corresponding Internet application (web browser, e-mail

application, etc.).

Once you have replaced the brief server address with the true server address,

the Router should have no problem accessing the Internet through that Internet

application.

Figure E-2

Step One: Pinging for an IP Address

The first step to determining your ISP’s web and e-mail server address is to

ping its IP Address.

Power on the computer and the cable or DSL modem

, and restore the

network configuration set by your ISP if you have since changed it.

Click Start

, select

Run,

and type

command

. This will bring up the DOS

Window.

At the DOS command prompt

, type

ping mail

(assuming that the loca-

tion for which you’re trying to find an IP address is configured as “mail”).

Press the

Enter

key. Information such as the following data, taken from a

ping of Microsoft Network’s e-mail server, will be displayed.

C:\>ping mail

Pinging mail [24.53.32.4] with 32 bytes of data:

Reply from 24.53.32.4: bytes=32 time<10ms TTL=128

Ping statistics for 24.53.32.4:

Packets: Sent = 4, Received = 4, Lost = 0 (0%

loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum =

0ms, Average =

0ms

Write down the IP address returned by the ping command

. (In the

example above: 24.53.32.4.) This IP address is the actual IP address of the

server “mail”, or any other word or value you have pinged.

Figure E-1

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EtherFast

Cable/DSL VPN Router with 4-Port 10/100 Switch

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Find and double-click

TCP/IP

in the list to the right in Figure F-2.

After a few seconds you will be brought back to the main Network window.

The TCP/IP Protocol should now be listed.

Click

. Windows may ask for original Windows installation files.

Supply them as needed (e.g.: c:\windows\options\cabs., D:\win98,

D:\win95, D:\win9x, etc.)

Windows will ask you to restart the PC. Click

Yes

The TCP/IP Installation is complete.

Figure F-3

Figure F-2

Appendix F: Installing the TCP/IP

Protocol

the TCP/IP Protocol

Follow these instructions to install the TCP/IP Protocol on one of your PCs

only

after a network card has been successfully installed inside the PC. These

instructions are for Windows 95, 98, and Millennium. For TCP/IP setup under

Windows NT, 2000, or XP, please refer to your Windows documentation.

Click the

Start

button. Choose

Settings

, and then

Control Panel

Double-click the

Network

icon. Your Network window should pop up.

Select the

Configuration

tab.

Click the

Add

button

Double-click

Protocol

Highlight

Microsoft

under the list of manufacturers.

Figure F-1

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EtherFast

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Write down the Adapter Address as shown on your computer screen (see

Figure G-3).

This is the MAC address for your Ethernet adapter and will

be shown as a series of numbers and letters.

The MAC address/Adapter Address is what you will use for MAC Address

Cloning or MAC Filtering.

The example in Figure G-3 shows the IP address of your Ethernet adapter

as 192.168.1.100. Your computer may show something different.

For Windows NT, 2000, and XP:

The following steps show an alternative way of obtaining the MAC address and

IP address for your Ethernet adapter.

1. Click on

Start

and

Run

. In the Open field, enter

cmd

. Press the

Enter

key

or click the

button.

Figure G-3

Figure G-4

Note

: The MAC address is also called the Adapter

Address.

Appendix G: Finding the MAC

Address and IP Address for Your

Ethernet Adapter

This section describes how to find the MAC address for your Ethernet adapter

to do either MAC Filtering or MAC Address Cloning for the Router and ISP.

You can also find the IP address of your computer’s Ethernet adapter.

The IP

address is used for filtering, forwarding, and DMZ.

Follow the steps in this

appendix to find the MAC address or IP address for your adapter in Windows

95, 98, Me, NT, 2000, and XP.

For Windows 95, 98, and Me:

1. Click on

Start

and

Run

. In the Open field, enter

winipcfg

. Then press the

Enter

key or the

button.

2. When the IP Configuration window appears, select the Ethernet adapter

you are using to connect to the Router via a CAT 5 Ethernet cable.

Figure G-1

Figure G-2

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When entering the information using the Router’s Web-based Utility, you will

type the

12-digit MAC address

in this format, XXXXXXXXXXXX

without

the hyphens

for MAC Filtering. See Figure G-6.

When entering information for MAC Address Cloning, type the

12-digit MAC

address

(see Figure G-7).

Figure G-6

Figure G-7

In the command prompt, enter

ipconfig /all

. Then press the

Enter

key.

Write down the Physical Address as shown on your computer screen; it is

the MAC address for your Ethernet adapter.

This will appear as a series of

letters and numbers.

The MAC address/Physical Address is what you will use for MAC Address

Cloning or MAC Filtering.

The example in Figure G-5 shows the IP address of your Ethernet adapter

as 192.168.1.100. Your computer may show something different.

Figure G-5

Note

: The MAC address is also called the Physical

Address.

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