Linksys WAG200G Router Manual PDF (Setup & Configuration Guide)

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Chapter 4

Advanced Configuration

Wireless-G ADSL Home Gateway

Wireless > Wireless Access

Wireless access can be filtered by using the MAC addresses

of the wireless devices transmitting within your network’s

radius.

Wireless > Wireless Access

Wireless Network Access

Allow All/Restrict Access

To filter wireless users by MAC

address, either permitting or blocking access, select

Restrict

Access

. If you do not wish to filter users by MAC address,

keep the default,

Allow All

Prevent listed computers from accessing the wireless

network

Select this to block wireless access by MAC

address. This setting is selected by default.

Permit only listed computers to access the wireless

network

Select this to allow wireless access by MAC

address.

Edit MAC Address Access List

Click this to open the

MAC

Address Filter List

screen.

MAC Address Filter List

MAC 01-20

Enter the MAC addresses of the devices

whose wireless access you want to block or allow.

Wireless Client MAC List

Click this to open the

Wireless Client List

screen.

Wireless Client List

This screen lists the MAC addresses of the wireless

devices. Select

Enable MAC Filter

for any device you

want to add to the MAC Address Filter List. Then click

Update Filter List

To retrieve the most up-to-date information, click

Refresh

. To exit this screen and return to the

Wireless

MAC Filter List

screen, click

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Wireless > Advanced Wireless Settings

The

Advanced Wireless Settings

screen is used to set up the

Gateway’s advanced wireless functions. These settings

should only be adjusted by an expert administrator as

incorrect settings can reduce wireless performance.

Wireless > Advanced Wireless Settings

Advanced Wireless

Wireless-G Settings

Authentication Type

The default is

Auto

, which allows

either Open System or Shared Key authentication to be

used. With Open System authentication, the sender and

the recipient do NOT use a WEP key for authentication.

With Shared Key authentication, the sender and recipient

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Chapter 4

Advanced Configuration

Wireless-G ADSL Home Gateway

use a WEP key for authentication. Select

Shared Key

only use Shared Key authentication.

Control TX Rate

The Control TX Rate should be set

depending on the speed of your wireless network. Select

from a range of transmission speeds, or keep the default,

Auto

. When the Auto setting is selected, the Gateway

automatically uses the fastest possible data rate and

enables the Auto-Fallback feature, which negotiates the

best possible connection speed between the Gateway

and a wireless device.

Beacon Interval

Enter a value between 1 and 65,535

milliseconds. The Beacon Interval value indicates the

frequency interval of the beacon. A beacon is a packet

broadcast by the Gateway to synchronize the wireless

network(s). The default value is

100

DTIM Interval

This value, between 1 and 255, indicates

the interval of the Delivery Traffic Indication Message

(DTIM). A DTIM field is a countdown field informing

clients of the next window for listening to broadcast and

multicast messages. When the Gateway has buffered

broadcast or multicast messages for associated clients, it

sends the next DTIM with a DTIM Interval value. Its clients

hear the beacons and awaken to receive the broadcast

and multicast messages. The default value is

Fragmentation

Threshold

This

value

specifies

the

maximum size for a packet before data is fragmented

into multiple packets. If you experience a high packet

error rate, you may slightly increase the Fragmentation

Threshold. Setting the Fragmentation Threshold too low

may result in poor network performance. Only minor

reduction of the default value is recommended. In most

cases, it should remain at its default value of

2346

RTS

Threshold

Should

you

encounter

inconsistent

data flow, only minor reduction of the default,

2347

, is

recommended. If a network packet is smaller than the

preset RTS threshold size, the RTS/CTS mechanism will

not be enabled. The Gateway sends Request to Send (RTS)

frames to a particular receiving station and negotiates

the sending of a data frame. After receiving an RTS, the

wireless station responds with a Clear to Send (CTS) frame

to acknowledge the right to begin transmission. The RTS

Threshold value should remain at its default value of

2347

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Security > Firewall

The

Firewall

screen is used to configure a firewall that

can filter out various types of unwanted traffic on the

Gateway’s local network.

Security > Firewall

Firewall

Firewall Protection

To use firewall protection, keep the

default selection,

Enable

. To turn off firewall protection,

select

Disable

Additional Filters

Filter Proxy

Use of WAN proxy servers may compromise

the Gateway’s security. Denying Proxy will disable access

to any WAN proxy servers. Select

Filter Proxy

to enable

proxy filtering. Deselect the feature to allow proxy access

Filter Java Applets

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. Select

Filter Java Applets

to enable Java

filtering. Deselect the feature to allow Java usage

Filter Cookies

A cookie is data stored on your computer

and used by Internet sites when you interact with them.

Select

Filter Cookies

to filter cookies. Deselect the feature

to allow cookie usage

Filter 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. Select

Filter ActiveX

to enable ActiveX filtering.

Deselect the feature to allow ActiveX usage

Block WAN Requests

Block

Anonymous

Internet

Requests

This

feature

makes it more difficult for outside users to work their way

into your network. This feature is selected

by default.

Deselect the feature to allow anonymous Internet requests.

View Log

To view the logs, click

View Log

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Chapter 4

Advanced Configuration

Wireless-G ADSL Home Gateway

View Log

Log

Type

Select from the following:

ALL

System Log

Access Log

Firewall Log,

VPN Log, UPnP Log,

Incoming Log, or Outgoing Log

Click

Refresh

to update the log. Click

Clear

to clear all

the information that is displayed. Click

to view the previous page of information. Click

Page

to view the next page of information.

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Security > VPN Passthrough

The

VPN Passthrough

screen allows you to enable VPN

tunnels using IPSec, PPPoE, PPTP, or L2TP protocols to pass

through the Gateway’s firewall.

Security > VPN Passthrough

VPN Passthrough

IPSec Passthrough

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 Gateway, keep the default,

Enable

PPPoE Passthrough

Point-to-Point over Ethernet (PPPoE)

allows PPPoE to be tunneled through an IP network. To

allow PPPoE tunnels to pass through the Gateway, keep

the default,

Enable

PPTP Passthrough

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 Gateway, keep the default,

Enable

L2TP Passthrough

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 Gateway, keep the default,

Enable

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Access Restrictions > Internet Access

The

Internet Access

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.

Access Restrictions > Internet Access

Internet Access

Internet Access Policy

Access can be managed by a

policy. Use the settings on this screen to establish an

access policy (after

Save Settings

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

Delete

. To view all the policies, click

Summary

The policies are listed with the following information: No.,

Policy Name, Days, and Time of Day. To delete a policy,

select

Delete

. To return to the

Internet Access Policy

screen,

click

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Chapter 4

Advanced Configuration

Wireless-G ADSL Home Gateway

Summary

Status

Policies are disabled by default. To enable a policy,

select its number from the drop-down menu, and select

Enable

To create a policy, follow steps 1-10. Repeat these steps to

create additional policies, one at a time.

Select a number from the

Internet Access Policy

drop-

down menu.

To enable this policy, select

Enable

Enter a Policy Name in the field provided.

Click

Edit List of PCs

to select which computers will be

affected by the policy. The

Internet Access PC List

screen

appears. You can select a computer 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 computers.

After making your changes, click

Save Settings

apply your changes, or click

Cancel Changes

to cancel

your changes. Then click

Internet Access Computer List

Specify the Access Restriction to apply to the computers

you selected in step 4. Select

Deny

to block Internet

access, or

Allow

to allow Internet access.

Specify when this policy will be in effect. Select the

days: individual days of the week, or

Everyday

. Then

select the time span within each day: specific start and

end times using the

From

and

fields, or

24 Hours

To block websites by URL address, enter each URL in a

separate

Website Blocking by URL Address

field.

To block websites using keywords, enter each keyword

in a separate

Website Blocking by Keyword

field.

You can filter access to various services accessed

over the Internet, such as FTP or telnet. From the

Blocked

Services

list, select the service you want

to block; the port numbers and protocol for the

selected service are automatically displayed.

If the service you want is not listed, then add it;

enter its port numbers in the fields provided; then

select its protocol:

ICMP

TCP

UDP

, or

TCP & UDP

from the drop-down menu. Then click

Add

If you want to modify the service you added, select it, and

them make your changes. Then click

Modify

you

want

delete

service

you

added, select it, and then click

Delete

When your changes have been made, click

Save

Settings

Blocked Services List

Click

Save Settings

to save the policy’s settings. To

cancel the policy’s settings, click

Cancel Changes

Applications and Gaming > Single Port

Forwarding

The

Single Port Forwarding

screen allows you to customize

port services for common applications.

10.

Page 20 / 39

Chapter 4

Advanced Configuration

Wireless-G ADSL Home Gateway

Applications and Gaming > Single Port Forwarding

When users send these types of requests to your network

via the Internet, the Gateway will forward those requests

to the appropriate servers (computers). Before using

forwarding, you should assign static IP addresses to the

designated servers.

Single Port Forwarding

To forward a port, enter the information on each line for

the criteria required.

Application

Enter the name you wish to give the

application. Each name can be up to 12 characters.

External and Internal Port

Enter the external and

internal port numbers.

Protocol

Select the protocol used for this application,

either

TCP

UDP

IP Address

For each application, enter the IP address of

the computer that should receive the requests.

Enabled

For each application, select

Enabled

to enable

port forwarding.

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Applications and Gaming > Port Range

Forwarding

The

Port Range Forwarding

screen 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.)

Applications and Gaming > Port Range Forwarding

When users send these types of requests to your network via

the Internet, the Gateway will forward those requests to the

appropriate servers (computers). Before using forwarding,

you should assign static IP addresses to the designated

servers.

If you need to forward all ports to one computer, click the

DMZ

tab.

Port Range Forwarding

To forward a port range, enter the information on each

line for the criteria required.

Application

In this field, enter the name you wish to give

the application. Each name can be up to 12 characters.

Port Range Start and End

Enter the number or range of

port(s) used by the server or Internet applications. Check

with the Internet application documentation for more

information.

Protocol

Select the protocol used for this application,

either

TCP

UDP

, or

Both

IP Address

For each application, enter the IP address of

the computer running the specific application.

Enabled

Select

Enabled

to enable port forwarding for

the applications you have defined.

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

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