Linksys WAG54GS Router Manual PDF (Setup & Configuration Guide)

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Chapter±4

Advanced Configuration

1³

W±reless-G ADSL Gateway w±th SpeedBooster

Access

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

keep the default,

Allow All

Prevent l±sted computers from access±ng the w±reless

network

Select this

to block wireless access by MAC

address. This setting is selected by default.

Perm±t only l±sted computers to access the w±reless

network

Select this to allow wireless access by MAC

address.

Update F±lter L±st

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.

W±reless Cl±ent MAC L±st

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 F±lter

for any device you

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

Update F±lter L±st

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 Sett±ngs

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Wireless > Advanced Wireless Settings

This

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

Authent±cat±on 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

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.

W±reless Afterburner

To improve wireless performance

when the Gateway is used with devices that support

SpeedBooster, keep the default,

Enable

. Otherwise, select

D±sable

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

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Chapter±4

Advanced Configuration

1´

W±reless-G ADSL Gateway w±th SpeedBooster

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

Fragmentat±on

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

23²´

RTS

Threshold

Should

you

encounter

inconsistent

data flow, only minor reduction of the default,

23²´

, 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

23²´

Click

Save Sett±ngs

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

SPI F±rewall Protect±on

To use firewall protection,

keep the default selection,

Enable

. To turn off firewall

protection, select

D±sable

Additional Filters

F±lter Proxy

Use of WAN proxy servers may compromise

the Gateway’s security. Denying Proxy will disable access

to any WAN proxy servers. Select

F±lter Proxy

to enable

proxy filtering. Deselect the feature to allow proxy access

F±lter 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

F±lter Java Applets

to enable Java

filtering. Deselect the feature to allow Java usage

F±lter Cook±es

A cookie is data stored on your computer

and used by Internet sites when you interact with them.

Select

F±lter Cook±es

to filter cookies. Deselect the feature

to allow cookie usage

F±lter Act±veX

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

F±lter Act±veX

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

Click

Save Sett±ngs

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, 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

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

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Chapter±4

Advanced Configuration

1µ

W±reless-G ADSL Gateway w±th SpeedBooster

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 Sett±ngs

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Access Restrictions > 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.

Access Restrictions > Internet Access Policy

Internet Access Policy

Internet Access Pol±cy

Access can be managed by a

policy. Use the settings on this screen to establish an

access policy (after

Save Sett±ngs

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

Summary

Status

Policies are disabled by default. To enable a policy,

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

select

Enable

To create a policy, follow steps 1-11. 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

Ed±t L±st 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 Sett±ngs

apply your changes, or click

Cancel Changes

to cancel

your changes. Then click

Internet Access PC List

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Chapter±4

Advanced Configuration

W±reless-G ADSL Gateway w±th SpeedBooster

Select

the

appropriate

option,

Deny

Allow

depending on whether you want to block or allow

Internet access for the computers you selected on the

Internet Access PC List

screen.

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

2² Hours

You can block websites with specific URL addresses.

Enter each URL in a separate

Website Blocking by URL

Address

field.

You can also block websites using specific 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, select

User-

Def±ned

. Enter its port numbers in the fields provided.

Then select its protocol:

ICMP

TCP

UDP

, or

TCP &

UDP

from the drop-down menu.

Click

Save Sett±ngs

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 on this screen.

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.

10.

11.

Applications and Gaming > Single Port Forwarding

Single Port Forwarding

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

the criteria required.

Appl±cat±on

Enter the name you wish to give the

application. Each name can be up to 12 characters.

External Port

Enter the external port number used by

the server or Internet application. Check with the Internet

application documentation for more information.

Internal Port

Enter the internal port number used by

the server or Internet application. 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 that should receive the requests.

Enabled

For each application, select

Enabled

to enable

port forwarding.

Click

Save Sett±ngs

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.)

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Chapter±4

Advanced Configuration

W±reless-G ADSL Gateway w±th SpeedBooster

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.

Applications and Gaming > Port Range Forwarding

Port Range Forwarding

To forward a port range, enter the information on each

line for the criteria required.

Appl±cat±on

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.

Enable

Select

Enable

to enable port forwarding for the

applications you have defined.

Click

Save Sett±ngs

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Applications & Gaming > Port Range

Triggering

The

Port Range Triggering

screen allows the Gateway to

watch outgoing data for specific port numbers. The IP

address of the computer that sends the matching data is

remembered by the Gateway, so that when the requested

data returns through the Gateway, the data is pulled back

to the proper computer by way of IP address and port

mapping rules.

Applications and Gaming > Port Range Triggering

Port Range Triggering

To trigger a port range, enter the information on each line

for the criteria required.

Appl±cat±on Name

Enter the application name of the

trigger.

Tr±ggered Range Start Port and End Port

For each

application, enter the starting and ending port numbers of

the triggered port number range. Check with the Internet

application

documentation

for

the

port

number(s)

needed.

Forwarded Range Start Port and End Port

For each

application, enter the starting and ending port numbers

of the forwarded port number range. Check with the

Internet application documentation for the port number(s)

needed.

Enabled

Select

Enabled

to enable port triggering for the

applications you have defined.

Click

Save Sett±ngs

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Applications and Gaming > DMZ

The DMZ feature allows one network computer to be

exposed to the Internet for use of a special-purpose

service such as Internet gaming or videoconferencing.

DMZ hosting forwards all the ports at the same time to

one PC. The Port Range Forwarding feature is more secure

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