Linksys BEFSX41v1.44 Router Manual PDF (Setup & Configuration Guide)

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BEFSX41v1.44

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EtherFast

Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

From the DHCP screen, shown in Figure 7-28, you can configure the Router as

a DHCP Server.

A Dynamic Host Configuration Protocol (DHCP) server automatically assigns

an IP address to each PC on your network for you. Unless you already have one,

it is highly recommended that you leave the Router enabled as a DHCP server.

DHCP Server

DHCP is already enabled by factory default.

If you already

have a DHCP server on your network, set the Router’s DHCP option to

Disable

. Click the

Apply

button and then the

Continue

button.

If you disable

DHCP, remember to assign a static IP address to the Router.

Starting IP Address

Enter a value for the DHCP server to start with when

issuing IP addresses.

This value must be 192.168.1.2 or greater, because the

default IP address for the Router is

192.168.1.1

Firmware Version

This field shows the installed version and date of the

firmware.

Version dates are slightly more accurate than version numbers.

Current Time

Based upon the time zone selection made on the Setup tab, this

field will display the current time.

This indicates if you are using a dial-up style connection like PPPoE,

RAS, PPTP, or HBS. For PPPoE, RAS, PPTP, or HBS only, there is a

Connect

button to click if you are disconnected and want to re-establish a connection.

LAN

These fields display the current IP Address and Subnet Mask of the

Router, as seen by users on your local area network. The DHCP Server field

shows the status of the Router’s DHCP server function, which is either enabled

or disabled.

WAN

These fields display the WAN IP Address, WAN Subnet Mask, and

WAN Default Gateway IP Address of the Router, as seen by external users on

the Internet. The DNS (Domain Name System) IP Address fields show the IP

address(es) of the DNS currently used by the Router. Multiple DNS IP settings

are common. In most cases, the first available DNS entry is used.

DHCP Release

Click the

DHCP Release

button to release the current IP

address of the device connected to the Router’s WAN port.

DHCP Renew

Click the

DHCP Renew

button to replace the current IP

address—of the device connected to the Router’s WAN port—with a new IP

address.

DHCP Clients Table

Click the

DHCP Clients Table

button to view the list of

PCs that were given IP addresses by the Router.

DHCP

Figure 7-28

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EtherFast

Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

The Log tab, shown in Figure 7-29, provides you with a log of all incoming and

outgoing URLs or IP addresses for your Internet connection.

To access activity logs, select the

Enable

option next to Log. This function can

be disabled by clicking the

Disable

radio button.

With logging enabled, you can choose to view temporary logs or have a per-

manent record, using the Logviewer software. Temporary logs can be accessed

from the Log screen by clicking either the

Incoming Access Log

Outgoing

Access Log

button. The Incoming Access Log gives you a log of all the incom-

ing Internet traffic while the Outgoing Access Log lists all the URLs and IP

addresses of Internet sites that users on your network have accessed.

For a permanent record of these logs, Logviewer software must be used. This

software is downloadable from the Linksys website,

www.linksys.com

. The

Logviewer saves all incoming and outgoing activity as a permanent file on your

PC’s hard drive. In the

Send Log to

field, enter the fixed IP address of the PC

running the Logviewer software. The Router will now send updated logs to that

PC.

Click the

View Logs

button for a selection of logs to view (see Figure 7-30).

Number of DHCP Users

(Optional) Enter the maximum number of PCs that

you want the DHCP server to assign IP addresses to. This number cannot be

greater than 253.

In order to determine the DHCP IP Address range, add the

starting IP address (e.g., 100) to the number of DHCP users.

By default, as

shown in Figure 7-28, add 100 to 50, and the range is 192.168.1.100 to

192.168.1.149.

Client Lease Time

The Client Lease Time is the amount of time a network

user will be allowed connection to the Router with their current dynamic IP

address. Enter the amount of time, in minutes, that the user will be “leased” this

dynamic IP address.

DNS

The Domain Name System (DNS) is how the Internet translates domain

or website names into Internet addresses or URLs. Your ISP will provide you

with at least one DNS Server IP Address. If you wish to use another, type that

IP Address

in one of these fields. You can type up to three DNS Server IP

Addresses here. The Router will use these for quicker access to functioning

DNS servers. Otherwise, leave this blank.

WINS

The Windows Internet Naming Service (WINS) manages each PC’s

interaction with the Internet. If you use a WINS server, enter that

server’s IP

Address

here. Otherwise, leave this blank.

DHCP Clients Table

Click the

DHCP Clients Table

button to show the cur-

rent DHCP Client data. (This data is stored in temporary memory and changes

periodically.)

To apply any of the settings you change on a page, click the

Apply

button, and

then click the

Continue

button.

To cancel any values you’ve entered on any

page, click the

Cancel

button.

Log

Figure 7-29

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EtherFast

Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

From the drop-down menu, select the log you wish to view: All (to view all

logs), System Log, Access Log, Firewall Log, or VPN Log.

• System Log

The System Log screen displays a list of cold and warm

starts, web login successes and failures, and packet filtering policies.

• Access Log

The Access Log screen shows all incoming and outgoing

traffic.

• Firewall Log

The Firewall Log screen lists activities performed by the

firewall to prevent DoS attacks, including URL filtering and time filtering.

• VPN Log

The VPN Log screen displays successful connections, trans-

missions and receptions, and the types of encryption used.

To clear a log, click the

Clear

button. To refresh a log, click the

Refresh

but-

ton. To return to the Log screen, close this window.

To clear any values you’ve entered on any page, click

Cancel

and re-enter

information. To apply any settings you’ve altered on any page, click the

Apply

button. Once all settings are correct, click

Continue

Under the Help tab, shown in Figure 7-31, you’ll find links to all of the Utility’s

internal support documentation, including the application that upgrades the

Router’s firmware.

Clicking on any of the topics in the bar on the left will give you help informa-

tion about that topic.

Clicking the Linksys Website link will take you to Linksys’s website,

www.linksys.com

, provided you are connected to the Internet.

Clicking the Online manual in PDF format link will take you to the latest ver-

sion of the user guide for this Router. The guide will be in Adobe Acrobat

Portable Document File (.pdf) format. You will need the Adobe Acrobat Reader

to view this pdf. If you do not have the Acrobat Reader, click the Adobe

Website link to download it.

New firmware versions are posted at

www.linksys.com

and can be downloaded

for free.

If the Router can access the Internet already, there’s no need to down-

load a newer firmware version, unless that version has a new feature that you

want to use.

Loading new firmware onto the Router does not always enhance

the speed or the quality of your connection.

Help

Figure 7-31

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EtherFast

Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

The Filters screen, shown in Figure 7-33, allows you to block or allow specific

kinds of Internet usage. You can set up Internet access policies for specific PCs.

Internet Access Policy

Multiple filters can be saved as Internet Access

Policies. To create or edit a Policy, select the number of the Policy from the

drop-down menu. The screen will change to reflect the settings of this Policy.

If you want to delete this Policy, click the

Delete

button.

Filters

Figure 7-33

Instant Broadband

Series

To upgrade the Router’s firmware:

1. Select the

Help

tab (see Figure 7-31).

2. Click

Upgrade Firmware

to display the window shown in Figure 7-32.

3. Click the

Browse

but-

ton

find

the

firmware upgrade file

that you downloaded

from

the

Linksys

website

and

then

extracted.

4. Double-click the

firmware file

you downloaded and extracted.

Click the

Upgrade

button, and follow the instructions there.

The following tabs are for advanced users or users whose setup needs require

special configuration. When you click the Advanced tab, you will be able to set

up these features. There are six additional tabs available.

•

Filters - Allows you to block or allow specific kinds of Internet usage.

•

Forwarding - Sets up public services on your network.

•

Dynamic Routing - Sets up the Router so it will automatically adjust to

physical changes in the network’s layout.

•

Static Routing - Sets up static routes as needed when network information

must travel to a specific host or network.

•

DMZ Host - Allows one local user to be exposed to the Internet for use of

special-purpose services such as online gaming or videoconferencing.

•

MAC Address Cloning - Allows you to “clone” your Ethernet adapter’s

MAC address onto the Router.

Note:

By upgrading the Router’s firmware, you may lose the Router’s

configuration settings.

Figure 7-32

Advanced

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EtherFast

Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

To block websites with specific URL addresses, enter each URL address in

Website Blocking by URL Address

field. You can enter up to four URL

addresses.

To block websites that use specific keywords as part of their URL address-

es, enter each keyword in a

Website Blocking by Keyword

field. You can

enter up to six keywords.

7. Select the service(s) you want to block. The default setting is

Disable

Default services include FTP, Telnet, SMTP, DNS, TFTP, HTTP, POP3,

NNTP, SNMP, and Ping. To add a service or edit a service’s settings, follow

these instructions:

Click the

Add Service

button (see Figure 7-

36). You can have up to

60 services, including

default services such as

FTP and Telnet.

Instant Broadband

Series

To see a summary of all Policies, click the

Summary

button.

The Policies are listed on this screen with their names and settings (see Figure

7-34). To update the

Internet Policy Summary

screen with the most recent infor-

mation, click the

refresh

button. To delete any Policy from this screen, check

the empty box beneath the

Delete

button, and then click the

Delete

button. To

return to the

Filters

screen, click the

button.

Enter Policy Name

Policies are created using the settings on the

Filters

screen. To create a policy:

1. Enter a

Policy Name

in the field provided.

2. Select whether you want to

Allow

Deny

Internet access for the PCs you

will list on the

List of PCs

screen, during the days and hours you will select.

3. Select the appropriate

Days

and

Time

during which you want Internet

access to be filtered.

4. Click the

Edit List of PCs

button. The

List of PCs

screen will appear (see

Figure 7-35).

All PCs

is selected by default. Enter the IP address or MAC

address of any PC to which this Policy will apply. You can enter a range of

IP addresses to select multiple PCs. Click the

Apply

button to save your

settings. Click the

Cancel

button to undo any changes. Click the

but-

ton to return to the

Filters

screen.

Figure 7-34

Figure 7-35

Figure 7-36

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