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°

3.7.1.4 DNS Relay

The DNS Configuration allows the user to set the configuration of DNS.

DNS Rely Selection:

If user wants to disable this feature, he just needs to set both

Primary & Secondary DNS to 0.0.0.0. Using DNS relay, users can setup DNS server IP

to 192.168.1.1 on their computer. If not, device will perform as NO DNS relay.

If you don’t want to use the DNS Relay option, set the DNS relay to “

Use User

Discovered DNS Server Only

” and set both Primary and Secondary DNS Servers to

“

0.0.0.0

”.

°

3.8 Wireless Configuration

°

3.8.1 Wireless Configuration

Go to

Interface -> Wireless

to setup the wireless parameters.

SSID:

The SSID is a unique name to identify the ADSL Router in the Wireless LAN.

Wireless Clients associating to the ADSL Router must have the same SSID.

Broadcast SSID

: Select

No

to hide the SSID such that a station can not obtain the SSID

through passive scanning. Select

Yes

to make the SSID visible so a station can obtain in

the SSID through Passive scanning.

Channel ID:

The range of radio frequencies used by IEEE 802.11b/g wireless devices

us called a channel.

37

°

3.8.1.1 Wireless Security

WEP

(Wired Equivalent Privacy) encrypts data frames before transmitting over the

wireless network. Select

Disable

to allow all wireless computers to communicate with

the access points without any data encryption. Select

64-bit WEP

or

128-bit WEP

to

use data encryption.

Key#1~Key#4

The WEP keys are used to encrypt data. Both the ADSL Router and the

wireless clients must use the same WEP key for data transmission. If you chose

64-bit

WEP

, then enter any

10

hexadecimal digits (“0-9”, “A-F”) preceded by 0x for each key

(1-4). If you choose

1280bit WEP

, then enter

26

hexadecimal digits (“0-9”, “A-F”)

preceded by 0x for each key (1-4). The values must be set up exactly the same on the

Access Points as they are on the wireless client stations. The same value must be

assigned to Key 1 on both access point (your ADSL Router) and the client adapters, the

same value must be assigned to Key 2 on both access point and the client stations and so

on, for all four WEP keys.

WPA-PSK

Wi-Fi Protected Access, pre-shared key. Encrypts data frames before

transmitting over the wireless network.

Pre-shared Key

is used to encrypt data. Both the ADSL Router and the wireless clients

must use the same WPA-PSK Key for data transmission.

²

38

°

3.8.1.2 Advanced Setting

Beacon Interval:

The Beacon Interval value indicates the frequency interval of the

beacon. Enter a value between 20 and 1000. A beacon is a packet broadcast by the

Router to synchronize the wireless network.

RTS Threshold:

The RTS (Request To Send) threshold (number of bytes) for enabling

RTS/CTS handshake. Data with its frame size larger than this value will perform the

RTS/CTS handshake. Set this attribute to be larger than the

maximum MSDU

(MAC

Service Data Unit) size

TURNS OFF

the RTS/CTS handshake. Set this attribute to

ZERO

TURNS ON

the RTS/CTS handshake. Enter a value between 0 and 2432.

Fragment Threshold:

The threshold (number of bytes) for the fragmentation

boundary for directed messages. It is the maximum data fragment size that can be sent.

Enter a value between 256 and 2432.

39

DTIM:

This value is between 1 and 255, indicates the interval of the Delivery Traffic

Indication Message (DTIM).

s

°

3.8.1.3 MAC Address Filter

You can allow or deny a lust of MAC addresses associated with the wireless stations

access to the ADSL Router.

Status:

Use the drop down list box to enable or disable MAC address filtering.

Action:

Select

Deny Association

to block access to the router, MAC addresses not

listed will be allowed to access the router. Select

Allow Association

to permit access to

the router, MAC addresses not lusted will be denied access to the router.

°

3.9 Access Management

°

3.9.1 ACL

Go to

Access Management -> ACL

to enable remote management.

Access Control Listing (ACL) is a management tool that acts as a filter for incoming or

outgoing packets, based on application. You may use telnet or Web to remotely manage

the ADSL Router. User just needs to enable Telnet or Web and give it an IP address that

wants to access the ADSL Router. The default IP 0.0.0.0 allows any client to use this

service to remotely manage the ADSL Router.

40

ACL:

There has

Activated

&

Deactivated

option. The default setting is

Deactivated

which means all IP can access via router. If you choose

Activated

, you only can

access via router by listed IP addresses.

ACL Rule Index:

Index number from 1 and up to 16.

Active:

Once you choose

Yes

then you can access the IP via router.

Application:

Each of these labels denotes a service that you may use to remotely

manage the Router. Choices are

Web, FTP, Telnet, SNMP, Ping, ALL

.

Interface:

Select the access interface. Choices are

WAN, LAN

and

Both.

°

3.9.2 IP Filtering

Go to

Access Management -> IP Filtering

to block some packets form WAN.

The Router provides extensive firewall protection by restricting connection

parameters to limit the risk of intrusion and defending against a wide array of

common hacker attackers. Go to

Access Management

->

IP Filtering

to set different

IP filter rules of a given protocol (TCP, UDP, or ICMP) and a specific direction

(incoming, outgoing, or both) to filter the packets.

IP Filter is a more complex filtering tool, based more on IP and custom rules. Each of

the indices can hold six rules, and each interface can have four associated indices,

allowing 24 rules per interface. If all six rules in an index are Next rules, the data will be

sent to the next index for filtering.