วันพุธที่ 12 พฤษภาคม พ.ศ. 2553

DSL-2740B

>>> DSL-2740B Feature and Specification

>>Introduction
HIGH-SPEED ADSL2/2+ INTERNET CONNECTION
Latest ADSL2/2+ standards provide Internet transmission of up to 24Mbps downstream, 1Mbps upstream.

HIGH-PERFORMANCE WIRELESS
Embedded 802.11n technology for high-speed wireless connection, complete compatibility with 802.11b/g wireless devices

TOTAL SECURITY
Firewall protection from Internet attacks, user access control, WPA/WPA2 wireless security.

ULTIMATE INTERNET CONNECTION
The DSL-2740B ADSL2+ router is a versatile, high-performance remote router for home and the small office. With integrated ADSL2/2+ supporting up to 24Mbps
download speed, firewall protection, Quality of Service (QoS), 802.11n wireless LAN and 4 Ethernet switch ports, this router provides all the functions that a
home or small office needs to establish a secure and high-speed remote link to the outside world.

ULTIMATE WIRELESS CONNECTION WITH MAXIMUM SECURITY
This router provides maximize wireless performance by connecting this router to computer interfaces and stay connected from virtually anywhere at home and in
the office. The router can be used with 802.11b/g/n wireless networks to enable significantly improved reception. It supports WPA/WPA2 and WEP for flexible
user access security and data encryption methods.

FIREWALL PROTECTION & QoS
Security features prevents unauthorized access to the home and office network, be it from the wireless devices or from the Internet. The router provides firewall
security using Stateful Packet Inspection (SPI) and hacker attack logging for Denial of Service (DoS) attack protection. SPI inspects the contents of all incoming
packet headers before deciding what packets are allowed to pass through. Router access control is provided with packet filtering based on port and
source/destination MAC/IP addresses. For Quality of Service (QoS), the router supports multiple priority queues to enable a group of home or office users to
experience the benefit of smooth network connection of inbound and outbound data without concern of traffic congestion. This QoS support allows users to enjoy
high ADSL transmission for applications such as VoIP and streaming multimedia over the Internet.

>>>Features
• Faster Wireless Networking - The DSL-2740B provides up to 270Mbps* wireless connection with other 802.11n wireless clients. This
capability allows users to participate in real-time activities online, such as video streaming, online gaming, and real-time audio.

• Compatible with 802.11b and 802.11g Devices - The DSL-2740B is still fully compatible with the IEEE 802.11b and g standards, so it can
connect with existing 802.11b and g PCI, USB and Cardbus adapters.

• DHCP Support - Dynamic Host Configuration Protocol automatically and dynamically assigns all LAN IP settings to each host on your
network. This eliminates the need to reconfigure every host whenever changes in network topology occur.

• Network Address Translation (NAT) - For small office environments, the DSL-2740B allows multiple users on the LAN to access the
Internet concurrently through a single Internet account. This provides Internet access to everyone in the office for the price of a single user.
NAT improves network security in effect by hiding the private network behind one global and visible IP address. NAT address mapping can
also be used to link two IP domains via a LAN-to-LAN connection.

• Precise ATM Traffic Shaping - Traffic shaping is a method of controlling the flow rate of ATM data cells. This function helps to establish the
Quality of Service for ATM data transfer.

• High Performance - Very high rates of data transfer are possible with the Router. Up to 24Mbps downstream bit rate using the G.dmt
standard. (For ADSL2+)

• Full Network Management - The DSL-2740B incorporates SNMP (Simple Network Management Protocol) support for web-based
management and text-based network management via Telnet connection.

• Easy Installation - The DSL-2740B uses a web-based graphical user interface program for convenient management access and easy set
up. Any common web browser software can be used to manage the Router.

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>>> DSL-2740B Basic Installation/Configuration

Step 1 open a web-browser such as Internet Explorer and enter the IP address of the router (192.168.1.1).

Step 2 Type “admin” for the User Name and “admin” in the Password field.

Step 3 Setup Tab --> Wizard Click on the Setup Wizard button to launch the Setup Wizard.

Step 4 WELCOME TO D-LINK SETUP WIZARD There are six steps to configuring your router. Click on the Next to continue.

Step 5 CHANGE YOUR DSL-2740B PASSWORD The default password is "admin", in order to secure your network, please modify the password. Note: Confirm Password must be same as "New Password". Of course, you can click on the Skip to ignore the step.

Step 6 TIME Check the Enable NTP Server.
Select specific time server to use from the NTP Server Used drop-down menu.
Select your operating time zone from the Time Zone drop-down menu.
Check the Enable Daylight Saving if needed and then select the proper
Daylight Saving Offset drop-down menu. Configure the Daylight
Saving Dates from start date to end.
Click on the Save Settings button to apply your settings.

Step 7 SELECT INTERNET CONNECTION TYPE
Please select your Country and ISP, Protocol, Connection Type, the VPI and VCI information Will display Automatically. Of course, you can modify the information.
If, you can not find the country and ISP in the list below; you can select
"Others", and then input the "VPI" and "VCI” and Connection Type.
The Auto PVC Scan feature will not work in all cases so please enter the VPI/VCI numbers if provided by the ISP.

VPI and VCI value

Singnet : VPI:0, VCI:100

Pacnet : VPI:0, VCI:100

True : VPI:0, VCI:100

TOT : VPI:1, VCI:32

TT&T : VPI:0, VCI:33
3BB : VPI:0, VCI:33
Maxnet : VPI:0, VCI:33
CS Loginfo : VPI:0, VCI:33

BuddyBB : VPI:0, VCI:35
Streamyx : VPI:0, VCI:35

Maxis : VPI:0, VCI:35

Jaring : VPI:0, VCI:35
Click on the Next button to go to the next Setup Wizard window.

Step 8 Change Protocol to PPPoE/PPPoA connection

Step 9 Type in the Username and Password (and PPPoE Service Name, if required by your ISP).
Click on the Next button to go to the next Setup Wizard window.

Step 10 Using the Setup Wizard - For Wireless LAN Settings
Click the Enable Wireless box to allow the router to operate in the wireless environment.
The SSID identifies members of the Service Set. Accept the default name or change it to something else. If the default SSID is changed, all other devices on the wireless network must use the same SSID.
Set security Mode, select this option if your wireless adapters support
Click Next to go to the next window and complete the Setup Wizard.

Step 11 Setup Wizard - For LAN Settings
You can configure the LAN IP address to suit your preference. Many users will find it convenient to use the default settings together with DHCP service to manage the IP settings for their private network. The IP address of the Router is the base address used for DHCP. In order to use the Router for DHCP on your LAN, the IP address pool used for DHCP must be compatible with the IP address of the Router. The IP addresses available in the DHCP IP address pool will change automatically if you change the IP address of the Router.
Enter the desired IP address and Subnet Mask.
Enter the Start and Stop IP Address for the DHCP Server, or disable
DHCP Server.
Click Next to go to the next Setup Wizard window.

Step 12 RESTART
Click Back to review or modify settings. Click on Restart to apply current settings and reboot the DSL-2740B router. If your Internet connection does not work after the router restarts, you can try the Setup Wizard again with alternative settings or use Manual Setup instead provided you have your Internet connection details as provided to you by your ISP.

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>>> DSL-2740B How to enable WEP security

Step 1. Open your Web browser and enter the IP address of the router (192.168.1.1). Enter user name (admin) and password (the default is admin).

Step 2. Click on the WLAN button on the left side of your screen.

Step 3. Make sure the Enable Wireless option is selected.
Your wireless network name is displayed under the SSID field. You can change to anything you want.
Click on Save Settings when finished.

Step 4. Click on ADVANCED tab at the top of the screen and then click on WLAN SECURITY button on the left.

Step 5. Under Network Authentication select the type of security you want to have on your wireless network. We recommend WPA-PSK. If any of your wireless clients do not support WPA-PSK (WPA Personal), select the Shared option (WEP).

Under Network Authentication select Shared.
Set WEP Encryption to 'Enabled'.
Encryption Strength - choose 128 bit or 64 bit.
Current Network Key - 1.
Under Network Key 1 enter the key you want to use. 128 bit encryption requires 26 character HEX key (HEX characters include numbers from 0 to 9 and letters from A to F).

Step 6. Click on Save Settings.

When connecting your computers to the wireless network, make sure you use the same settings on your wireless adapter (e.g. WEP key 128 bit, HEX format). Please refer to your wireless adapter's guide on how to connect to a secure network.

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>>> DSL-2740B How to enable WPA-PSK security?

To setup wireless on your router and secure your wireless network please follow these steps:

Step 1. Open your Web browser and enter the IP address of the router (192.168.1.1). Enter user name (admin) and password (the default is admin).

Step 2. Click on the WLAN button on the left side of your screen.

Step 3. Make sure the Enable Wireless option is selected.
Your wireless network name is displayed under the SSID field. You can change to anything you want. Click on Save Settings when finished.

Step 4. Click on ADVANCED tab at the top of the screen and then click on WLAN SECURITY button on the left.

Step 5. Under Network Authentication select the type of security you want to have on your wireless network. We recommend WPA-PSK.

Under Network Authentication select 'WPA-PSK'.
Under WPA Pre-Shared Key specify a passphrase/key. You can just make it up. The key should be at least 8 characters long.
WPA Group Rekey Interval - 0
WPA Encryption - TKIP

Step 6. Click on Save Settings.

When connecting your computers to the wireless network, make sure you use the same security settings on your wireless adapter e.g. WPA-PSK with the same passphrase/key. Note that it is case sensitive. Please refer to your wireless adapter's guide on how to connect to a secure network.

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>>> DSL-2740B How to setup virtual server (Port forwarding)?

Opening ports in the router allows certain applications to access a device or a computer on your local network from the Internet. With its default settings the router allows all outgoing requests to go out and replies to those requests to get in. Some applications however require additional 'replies' to go through. That's when you need to open ports in your router. To open ports in your DSL-2740B router please follow these steps:

Step 1. Set the computer (or the device) which requires ports to be opened for, with static IP address. You can choose any IP address from the range of addresses you are using on your local network, as soon as it is not used by any other device. The default range is from 192.168.1.2 to 192.168.1.254. In our example we are using 192.168.1.99.

Windows XP: Control Panel > Network Connections > Local Area Connection > Properties > Internet protocol TCP/IP > Properties
Windows Vista: Control Panel > Network and Internet > [Network and Sharing Centre] > View Network Status and Tasks > View Status > Properties > Internet Protocol v4 > Properties

Select the 'Use the following IP address' option:
IP address: 192.168.1.99
Subnet mask: 255.255.255.0
Default Gateway: 192.168.1.1 (your router's address)
DNS: 192.168.1.1 and 61.88.88.88 (or whichever your provider is using)

Step 2. Open your Web browser and enter the IP address of the router (192.168.1.1). Enter user name (admin) and password (the default is admin).

Step 3. Click on ADVANCED and then on VIRTUAL SERVER button on the left side of your screen. Click on the 'Add a Rule' button.

Step 4. When adding a rule which opens ports:
under 'Select a Service' select the application you want to open the ports for.
under 'Server IP Address' type in the IP address of the computer/device you are opening ports for (the IP you have set in Step 1).

If you do not see your particular application/service in the drop-down list, see the additional Step 4a below.

Step 4a. You need to do this step only if your application /service is not listed in the drop-down list. Select the 'Custom Server' option.
under 'Customer Server' type in the name you want to give to this rule (e.g. Xbox 360).
under 'Server IP Address' type in the IP address of the computer/device you are opening ports for (the IP you have set in Step 1).

Now specify the ports and protocols that you need to open:
- If you need to open a single port enter the port number under both External Port Start and External Port End. Select the required protocol (TCP or UDP). You do not need to modify anything under the Internal Port fields.
- If you need to open a range of ports specify the beginning of the range under External Port Start. Specify the end of the range under External Port End. Select the required protocol (TCP or UDP). You do not need to modify anything under the Internal Port fields.

Step 5. When finished click on the 'Add Rules' button.


Be aware that many Internet Providers are blocking commonly used ports like 80 and 21, hence you will not be able to host a WEB site or a FTP site even if you open the necessary ports in the router.

Please note that from inside your LAN you will not be able to access your server using its public (Internet) IP address or FQDN name. On your LAN you will need to use its local IP address instead (e.g. 192.168.1.99).

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