Linksys WRT54GR Router Manual PDF (Setup & Configuration Guide)

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Chapter 6: Configuring the Wireless-G Broadband Router with RangeBooster

The Security Tab - Firewall

Wireless-G Broadband Router with RangeBooster

The Security Tab - Firewall

The

Firewall

screen offers filters that block specific Internet data types and block anonymous Internet requests.

Select the checkbox to enable a feature.

Firewall

SPI Firewall Protection

. Enable this feature to employ Stateful Packet Inspection (SPI) for more detailed review

of data packets entering your network environment.

Internet Filter

Filter Anonymous Internet Requests

. When enabled, this feature keeps your network from being “pinged,” or

detected, by other Internet users. It also reinforces your network security by hiding your network ports. Both

functions of this feature make it more difficult for outside users to work their way into your network. This feature

is enabled by default. Select

Disabled

to allow anonymous Internet requests.

Filter Multicast

. Multicasting allows for multiple transmissions to specific recipients at the same time. If

multicasting is permitted, then the Router will allow IP multicast packets to be forwarded to the appropriate

computers. Select

Enabled

to filter multicasting, or

Disabled

to disable this feature.

Filter Internet NAT Redirection

. This feature uses port forwarding to block access to local servers from local

networked computers. Select

Enabled

to filter Internet NAT redirection, or

Disabled

to disable this feature.

Filter IDENT (Port 113)

. This feature keeps port 113 from being scanned by devices outside of your local

network. Select

Enabled

to filter port 113, or

Disabled

to disable this feature.

Web Filters

Proxy

. Use of WAN proxy servers may compromise the Gateway's security. Denying Filter Proxy will disable

access to any WAN proxy servers. To enable proxy filtering, click the checkbox.

Java

. Java is a programming language for websites. If you deny Java, you run the risk of not having access to

Internet sites created using this programming language. To enable Java filtering, click the checkbox.

ActiveX

. ActiveX is a programming language for websites. If you deny ActiveX, you run the risk of not having

access to Internet sites created using this programming language. To enable ActiveX filtering, click the checkbox.

Cookies

. A cookie is data stored on your computer and used by Internet sites when you interact with them. To

enable cookie filtering, click the checkbox.

Figure 5-30: Security Tab - Firewall

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26

Chapter 6: Configuring the Wireless-G Broadband Router with RangeBooster

The Security Tab - VPN Passthrough

Wireless-G Broadband Router with RangeBooster

Figure 5-32: Access Restrictions Tab - Internet Access

Policy

Change these settings as described here and click the

Save Settings

button to apply your changes or

Cancel

Changes

to cancel your changes.

The Security Tab - VPN Passthrough

Use the settings on this tab to allow VPN tunnels using IPSec, L2TP, or PPTP protocols to pass through the

Router’s firewall.

IPSec Pass-through

. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure

exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, click

Enable

.

IPSec Pass-

Through is enabled by default.

L2TP Pass-through

. Layer 2 Tunneling Protocol is the method used to enable Point-to-Point sessions via the

Internet on the Layer 2 level. To allow L2TP tunnels to pass through the Router, click

Enable

. L2TP Pass-Through

is enabled by default.

PPTP Pass-through

. Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point Protocol (PPP) to be

tunneled through an IP network. To allow PPTP tunnels to pass through the Router, click

Enable

. PPTP Pass-

Through is enabled by default.

Change these settings as described here and click the

Save Settings

button to apply your changes or

Cancel

Changes

to cancel your changes.

The Access Restrictions Tab - Internet Access Policy

The

Internet Access Policy

screen allows you to block or allow specific kinds of Internet usage and traffic, such as

Internet access, designated services, and websites during specific days and times.

Internet Access Policy

Access Policy

. Access can be managed by a policy. Use the settings on this screen to establish an access policy

(after the

Save Settings

button is clicked). Selecting a policy from the drop-down menu will display that policy’s

settings. To delete a policy, select that policy’s number and click the

Delete This Policy

button. To view all the

policies, click the

Summary

button.

On the

Summary

screen, the policies are listed with the following information: No., Policy Name, Access, Days,

Time, and status (Enabled) to view. To delete a policy, click its

Delete

button. Click the

Save Settings

button to

save your changes, or click the

Cancel Changes

button to cancel your changes. To return to the Internet Access

Policy tab, click the

Close

button.

Figure 5-31: Security Tab - VPN Passthrough

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27

Chapter 6: Configuring the Wireless-G Broadband Router with RangeBooster

The Access Restrictions Tab - Internet Access Policy

Wireless-G Broadband Router with RangeBooster

To create an Internet Access policy:

1.

Select a number from the

Access Policy

drop-down menu.

2.

Enter a Policy Name in the field provided.

3.

To enable this policy, click

Enabled

.

4.

Click the

Edit List

button to select which PCs will be affected by the policy. The

Internet Access PCs List

screen will appear. You can select a PC by MAC Address or IP Address. You can also enter a range of IP

Addresses if you want this policy to affect a group of PCs. After making your changes, click the

Save Settings

button to apply your changes or

Cancel Changes

to cancel your changes. Then click the

Close

button.

5.

Click the appropriate option,

Deny

or

Allow

, depending on whether you want to block or allow Internet access

for the PCs you listed on the

List of PCs

screen.

6.

Decide which days and what times you want this policy to be enforced. Select the individual days during

which the policy will be in effect, or select

Everyday

. Then enter a range of hours and minutes during which

the policy will be in effect, or select

24 Hours

.

7.

You can also block access by URL address by entering it in the

Website Blocking by URL

Address field or by

Keyword by entering it in the

Website Blocking by Keyword

field. Click the

>>

button to add a selection to the

Blocked Applications list.

8.

You can filter access to various applications accessed over the Internet, such as FTP or telnet, by selecting up

to three applications from the drop-down menus under

Applications

.

If the application you want to block is not listed or you want to edit an application’s settings, then create a

new one by entering an Application Name, Port Range, and Protocol. Then, click

Add

.

Click the

Save Settings

button to save the policy’s settings. To cancel the policy’s settings, click the

Cancel

Changes

button.

Figure 5-34: List of PCs

Figure 5-33: Internet Policy Summary

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28

Chapter 6: Configuring the Wireless-G Broadband Router with RangeBooster

The Applications and Gaming Tab - Single Port Forwarding

Wireless-G Broadband Router with RangeBooster

The Applications and Gaming Tab - Single Port Forwarding

Single Port Forwarding

The Single Port Forwarding screen provides options for customization of port services for common applications.

When users send this type of request to your network via the Internet, the Router will forward those requests to

the appropriate computer. Any computer whose port is being forwarded should have its DHCP client function

disabled and should have a new static IP address assigned to it because its IP address may change when using

the DHCP function.

Select the pre-configured Application, or manually enter it in the field. Then, enter the External and Internal Port

numbers in the fields. Select the type of protocol you wish to use for each application:

TCP

,

UDP

, or

Both

. Enter

the IP Address in the field. Click

Enabled

to enable Forwarding for the chosen application.

When finished making your changes on this tab, click the

Save Settings

button to save these changes, or click

the

Cancel Changes

button to undo your changes.

Figure 5-35: Applications and Gaming Tab - Single Port

Forwarding

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29

Chapter 6: Configuring the Wireless-G Broadband Router with RangeBooster

The Applications and Gaming Tab - Port Range Forwarding

Wireless-G Broadband Router with RangeBooster

The Applications and Gaming Tab - Port Range Forwarding

The Applications and Gaming Tab allows you to set up public services on your network, such as web servers, ftp

servers, e-mail servers, or other specialized Internet applications. (Specialized Internet applications are any

applications that use Internet access to perform functions such as videoconferencing or online gaming. Some

Internet applications may not require any forwarding.)

To forward a port, enter the information on each line for the criteria required. The criteria are described here.

Application Name

. In this field, enter the name you wish to give the application. Each name can be up to 12

characters.

Start

~

End Port

. This is the port range. Enter the number that starts the port range under

Start

and the number

that ends the range under

End

.

Protocol

. Enter the protocol used for this application, either

TCP

or

UDP

, or

Both

.

To IP Address

. For each application, enter the IP Address of the PC running the specific application.

Enable

. Click the

Enable

checkbox to enable port forwarding for the relevant application.

Change these settings as described here and click the

Save Settings

button to apply your changes or

Cancel

Changes

to cancel your changes.

Figure 5-36: Applications and Gaming Tab - Port Range

Forward

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