D-Link DSL-2750E User Manual

D-Link DSL-2750E

Wireless N 300 ADSL2+ Modem Router

User Manual

RECYCLABLE

2013/04/18

Ver. 1.00

DSL-2750E User Manual

Contents

1 Introduction ........................................................................................................ 1

1.1

Packing List ........................................................................................... 1

1.2

Safety Precautions ................................................................................ 1

1.3

LEDs and Interfaces .............................................................................. 2

1.4

System Requirements ........................................................................... 4

1.5

Features ................................................................................................ 4

Hardware Installation ......................................................................................... 6

2.1

DSL Uplink Connection ......................................................................... 6

Web Configuration ............................................................................................. 7

3.1

Accessing the Device ............................................................................ 7

3.2

Setup ..................................................................................................... 7

3.2.1

Wizard ......................................................................................... 7

3.2.2

Internet Setup ........................................................................... 12

3.2.3

Wireless .................................................................................... 18

3.2.4

Local Network ........................................................................... 24

3.2.5

LAN IPv6 ................................................................................... 27

3.2.6

Time and Date .......................................................................... 28

3.2.7

Logout ....................................................................................... 29

3.3

Advanced ............................................................................................. 29

3.3.1

Advanced Wireless ................................................................... 29

3.3.2

Port Forwarding ........................................................................ 36

3.3.3

DMZ .......................................................................................... 37

3.3.4

SAMBA ..................................................................................... 38

3.3.5

3G Configuration ....................................................................... 39

3.3.6

Parental Control ........................................................................ 47

3.3.7

Filtering Options ........................................................................ 51

3.3.8

QoS Configuration .................................................................... 56

3.3.9

Firewall Settings ....................................................................... 60

3.3.10

DNS ..................................................................................... 60

3.3.11

Dynamic DNS ...................................................................... 61

3.3.12

Network Tools ...................................................................... 63

3.3.13

Routing ................................................................................ 70

3.3.14

Schedules ............................................................................ 74

3.3.15

NAT ..................................................................................... 75

DSL-2750E User Manual

3.3.16 FTPD Setting ....................................................................... 77

3.3.17

FTPD Account ..................................................................... 77

3.3.18

IP Tunnel ............................................................................. 78

3.3.19

Logout ................................................................................. 82

3.4

Management ........................................................................................ 83

3.4.1

Global IPv6 ............................................................................... 83

3.4.2

System Management ................................................................ 83

3.4.3

Firmware Update ...................................................................... 85

3.4.4

Access Controls ........................................................................ 86

3.4.5

Diagnosis .................................................................................. 89

3.4.6

Log Configuration ..................................................................... 92

3.4.7

Logout ....................................................................................... 93

3.5

Status ................................................................................................... 94

3.5.1

Device Info ................................................................................ 94

3.5.2

Wireless Clients ........................................................................ 95

3.5.3

DHCP Clients ............................................................................ 95

3.5.4

IPv6 Status ................................................................................ 95

3.5.5

Logs .......................................................................................... 96

3.5.6

Firewall Logs ............................................................................. 97

3.5.7

Statistics .................................................................................... 97

3.5.8

Route Info ................................................................................. 98

3.5.9

Logout ....................................................................................... 99

3.6

Help ..................................................................................................... 99

DSL-2750E User Manual

1 Introduction

The DSL-2750E supports multiple line modes. With four 10/100 base-T Ethernet interfaces at the user end, the device provides high-speed ADSL broadband connection to the Internet or Intranet for high-end users like net bars and office users. It provides high performance access to the Internet with a downstream rate of 24 Mbps and an upstream rate of 1 Mbps. It supports 3G WAN, 3G backup, Samba for USB storage and IPV6. The device supports WLAN access, such as WLAN AP or WLAN device, to the Internet. It complies with specifications of IEEE 802.11, 802.11b/g/n, WEP, WPA, and WPA2 security.

1.1 Packing List

 1 x DSL-2750E  1 x external splitter  1 x power adapter  1 x telephone cables (RJ-11)  1 x Ethernet cable (RJ-45)  1 x QIG  1 X CD

1.2 Safety Precautions

Take the following instructions to prevent the device from risks and damage caused by fire or electric power:

 Use the type of power marked in the volume label.  Use the power adapter in the product package.  Pay attention to the power load of the outlet or prolonged lines. An

overburden power outlet or damaged lines or plugs may cause electric shock or fire accidents. Check the power cords regularly. If you find any damage, replace it at once.

 Proper space left for heat dissipation is necessary to avoid damage

caused by overheating to the device. The long and thin holes on the device

DSL-2750E User Manual

are designed for heat dissipation to ensure that the device works normally. Do not cover these heat dissipation holes.

 Do not put this device close to a heat source or under a high temperature

occurs. Keep the device away from direct sunshine.

 Do not put this device close to an overdamp or watery place. Do not spill

fluid on this device.

 Do not connect this device to a PC or electronic product unless instructed

by our customer engineer or your broadband provider. Wrong connection may cause power or fire risk.

 Do not place this device on an unstable surface or support.

1.3 LEDs and Interfaces

Note:

The figures in this document are for reference only.

Front Panel

Figure 1 Front panel

The following table describes the LEDs of the device.

LED Color Status Description

Power

Green

Off The power is off. On

The power is on and the initialization is normal.

Red

On The device is initiating. Blinks The firmware is upgrading.

LAN

1/2/3/4

Green

Off No LAN link. Blinks

Data is being transmitted through the LAN interface.

The connection of LAN interface is

normal.

DSL-2750E User Manual

LED Color Status Description

WLAN

Green

Blinks

Data is transmitted through the WLAN interface.

The connection of WLAN interface is normal.

Off The WLAN connection is not established.

WPS

Blue

Blinks

WPS negotiation is enabled, waiting for the clients.

Off

WPS negotiation is not enabled on the device.

USB

Green

The connection of 3G or USB flash di sk has been established.

Blinking Data is being transmitted. Off

The connection of 3G or USB flash dis k is not established.

DSL

Green

Off Initial self-test is failed. Blinks The device is detecting itself.

Initial self-test of the unit has passed and is ready.

Internet

Green

Off

The device is under the Bridge mode, DSL connection is not present, or the power is off.

Blinks

Internet data is being transmitted in the routing mode.

On The IP is connected.

Red On

The device is attempted to become IP connected, but failed.

Rear Panel

Figure 2 Rear panel

DSL-2750E User Manual

The following table describes the interface of the device.

Interface/Button Description

DSL

RJ-11 interface that connects to the telephone set through the telephone cable.

LAN4/3/2/1

Ethernet RJ-45 interfaces that connect to the Ethernet interfaces of computers or Ethernet devices.

USB

USB port, for connecting the 3G network card or other USB

storage devices. WPS Press the button for 1 second to enable WPS function. WIRELESS

ON/OFF

Press the button silently to enable WLAN function.

ON/OFF Power on or off the device.

12V DC IN

Interface that connects to the power adapter. The power

adapter output is: 12V DC 1A.

Reset (on the bottom case)

Reset to the factory defaults. To restore factory defaults,

keep the device powered on and push a paper clip into the

hole. Press down the button for 1 second and then release.

1.4 System Requirements

 A 10 baseT/100BaseT Ethernet card is installed on your PC.  A hub or switch (attached to several PCs through one of Ethernet

interfaces on the device)

 Operating system: Windows Vista, Windows 7, Windows 98SE, Windows

2000, Windows ME or Windows XP

 Internet Explorer V5.0 or higher, Netscape V4.0 or higher, or Firefox 1.5 or

higher

1.5 Features

 Various line modes  External PPPoE dial-up access  Internal PPPoE and PPPoA dial-up access  Leased line mode  1483B, 1483R, and MER access

DSL-2750E User Manual

 Multiple PVCs (eight at most) and these PVCs can be isolated from each

other

 A single PVC with multiple sessions  Multiple PVCs with multiple sessions  Binding of ports with PVCs  802.1Q and 802.1P protocol  DHCP server  NAT and NAPT  Static route  Firmware upgrade: Web, TFTP, FTP  Reset to the factory defaults  DNS relay  Virtual server  DMZ  Two-level passwords and user names  Web user interface  Telnet CLI  System status display  PPP session PAP and CHAP  IP filter  IP QoS  Remote access control  Line connection status test  Remote management (telnet and HTTP)  Backup and restoration of configuration file  Ethernet interface supports crossover detection, auto-correction and

polarity correction

 UPnP  IPV6  3G WAN and 3G Backup  Samba for USB storage

DSL-2750E User Manual

2 Hardware Installation

2.1 DSL Uplink Connection

Step 1 Connect the DSL port of the device and the Modem port of the splitter

with a telephone cable. Connect the phone to the Phone port of the splitter through a telephone cable. Connect the incoming line to the Line port of the splitter.

The splitter has three ports:

 Line: Connect to a wall phone port (RJ-11 jack).  Modem: Connect to the DSL port of the device.  Phone: Connect to a telephone set.

Step 2 Connect a LAN port of the device to the network card of the PC

through an Ethernet cable (MDI/MDIX).

Note:

Use twisted-pair cables to connec t the device to a Hub or switch.

Step 3 Plug one end of the power adapter to the wall outlet and the other end

to the Power port of the device. Figure 3 displays the application diagram for the connection of the device, PC, splitter and telephone sets, when no telephone set is placed before the splitter.

Figure 3 Connection diagram

DSL-2750E User Manual

3 Web Configuration

This chapter describes how to configure the device by using the Web-based configuration utility.

3.1 Accessing the Device

The following is the detailed description of accesing the device for the first time.

Step 1 Open the Internet Explorer (IE) browser and enter

http://192.168.1.1.

Step 2 The Login page shown in the following figure appears. Enter the user

name and password and click Login.

 The user name and password of the super user are admin and

admin.

3.2 Setup

3.2.1 Wizard

After login, the Wizard page under Setup tab appears. Wizard enables fast and accurate configuration of Internet connection and other

important parameters. The following sections describe configuration parameters. When subscribing to a broadband servic e, you should be aware of the method, by which you are connected to the Internet. Your physical WAN device can be

DSL-2750E User Manual

Ethernet, DSL, or both. Technical information about the properties of your Internet connection is provided by your Internet service provider (ISP). For example, your ISP should inform you whether you are connec ted to the Internet using a static or dynamic IP address, or the protocol, s uch as PPPoA or PPPoE, that you use to communicate over the Internet.

Click Setup Wizard. The page shown in the following figure appears.

There are 5 steps to configure the device. Click Next to continue. Step 1 Set the time and date.

DSL-2750E User Manual

Step 2 Configure the Internet connection. Click Next after time and date setting and the following page appears. In this page, you can set the internet connection.

DSL-2750E User Manual

The following table describes the fields in this page.

Field

Description

Country Select the country you located from the drop-down list. ISP

Select the ISP you subscribed the internet service

from. Protocol Select the protocol you subscribed from your ISP. Encapsulation

Mode

Select the method of encapsulation provided by your

ISP. You can select LLC or VCMUX.

PVC Settings

VPI: The virtual path between two points in an ATM

network. Its valid value is from 0 to 255.

VCI: The virtual channel between two points in an A TM

network, ranging from 32 to 65535 (0 to 31 is reserved

for local management of ATM traffic).

Note:

Different protocol requires entering different information. You can fill in the entries according to what your ISP provides you.

Click Next. The page shown in the following page appears.

DSL-2750E User Manual

Step 3 Configure the wireless network. Enter the information and click Next to

go to the next step.

Step 4 Change or create the password of an account. Click Next to go to the

next step.

DSL-2750E User Manual

Step 5 Click Apply to save the settings.

Note:

In each step of the Wizard page, you can click Back to review or modify the previous settings. Click Cancel to exit the wizard page.

3.2.2 Internet Setu p

Choose Setup > Internet Setup. The page shown in the following figure appears. In this page, you can configure the WAN interface of the device.

DSL-2750E User Manual

Click Add and the page shown in the following figure appears.

The following table describes the parameters in this page.

Field

Description

PVC Settings

VPI: The virtual path between two points in an ATM

network. Its valid value is from 0 to 255.

VCI: The virtual channel between two points in an A TM

network, ranging from 32 to 65535 (0 to 31 is reserved

for local management of ATM traffic).

The values of VPI and VCI are provided by your ISP.

Service Category

You can select from the drop-down list.

DSL-2750E User Manual

Field

Description

Protocol

Selected the protocol you subscribed from your ISP. It

displays the protocol type used for this WAN connection.

Encapsulation Mode

Select the method of encapsulation provided by your ISP.

You can select

LLC

VCMUX

802.1Q VLAN ID

You can enable or disable this function. The value ranges

from 1 to 4094. Value 0 means to disable this function.

- PPPoE or PPPoA If the protocol is selected to be PPP over Ethernet (PPPoE) or PPP over ATM (PPPoA), the following page appears.

DSL-2750E User Manual

The following table describes the parameters of this page

Field

Description

PPP Username

The correct user name provided by your ISP.

DSL-2750E User Manual

Field

Description

PPP Password The correct password provided by your ISP Authentication

Method

To authenticate whether the PPP username and

password are correct. The value can be AUTO, PAP,

CHAP

MS-CHAP

. Usually, you can select AUTO.

Dial-up mode

 AlwaysOn

: If you select it, the system

automatically establishes a connection. If the network is disconnected because

of external

factors when you are using the Internet access service, the system tries connection every certain time (for example, 10 seconds) until the connection is established. If you pay for Internet access in the monthly fee mode, you are recommended to use this connection mode.

 OnDemand

: If you select it, the system

automatically establishes a connection when a network access request from the LAN is received. If no network access request is sent from the LAN within the set time of Idle Timeout, the system automatically interrupts the connection. If you pay for Internet access by time, you are recommende d to use this connection mode, which effectively saves the expense of Internet access.

 Manual: If you select it, you need to manually set

dialup connection after startup.

MRU Size

You can keep it as default.

Use Static IP Address

If this function is disabled, the modem obtains an IP

address assigned by an uplink equipment such as

BAS, through PPPoE dial-up. If this function is

enabled, the modem uses this IP address as the WAN

IP address.

Enable NAT

NAT is one where all requests from the same internal

IP address and port are mapped to the same external

IP address and port. Furthermore, any external host

can send a packet to the internal host, by sending a

packet to the mapped external address.

DSL-2750E User Manual

- MAC Encapsulation Routing/IPoA Choose Protocol to be MAC Encapsulation Routing or IP over ATM (IPoA), and the following page appears.

The following table describes the parameters of this page

Field

Description

WAN IP Address

Enter the WAN IP address provided by the ISP.

WAN Subnet Enter the WAN subnet mask provided by the ISP. It

DSL-2750E User Manual

Field

Description

Mask varies depending on the network type. It is usually

255.255.255.0 Default Gateway

Enter the IP address of the gateway provided by the

ISP. It is the IP address used for connecting to the ISP. Preferred DNS Server

Enter the IP address of the primary DNS server if

necessary Alternate DNS

Server

If the ISP provides another DNS server, enter the IP

address of that DNS server.

After setting, click Apply to make the settings take effect.

3.2.3 Wireless

This section describes the wireless LAN and basic configuration. A wireless LAN can be as simple as two computers with wireless LAN c ards communicati ng in a pear-to-pear network or as complex as a number of computers with wireless LAN cards communicating through access points which bridge network traffic to wired LAN. Choose Setup > Wireless. The Wireless page shown in the following figure appears.

3.2.3.1 Wireless Basics

In the Wireless page, click Wireless Basic. The page shown in the following figure appears. In this page, you can configure the parameters of wireless LAN clients that may connect to the device.

DSL-2750E User Manual

The following table describes the parameters in this page.

Field

Description

Enable

Wireless

Select this to turn Wi-Fi on.

Enable MultiAP Isolation

Select this to turn MultiAP isolation on.

Wireless Network Name (SSID)

The Wireless Network Name is a unique name that

identifies a network. All devices on a network must

share the same wireless network name in order to

communicate on the network. If you decide to change

the wireless network name from the default setting,

enter your new wireless network name in this field.

Visibility Status

Select Visible, the SSID can be detected. Select

Invisible

, the SSID cannot be detected.

Country

Select the country you located from the drop-down list.

Control Sideband

Choose the channel selection mode as Upper or

Lower. Wireless

Channel

Select the wireless channel from the pull-down menu.

It is different for different country.

802.11 Mode Select the appropriate 802.11 mode based on the

DSL-2750E User Manual

Field

Description

wireless clients in your network. It is recommended to

keep it as default. Band Width

Select the appropriate band of 20M, 40M or 20M/40M

according to your subscribed broadband service.

There is a 2-Dimension Code on the right of the page. This code can help your cellphone connect to the wireless network of DSL-2750E automatically by shooting the 2-Dimension code with the cellphone.

Note:

A cellphone can not connect to the wireless network unless a 2-Dimension code software is installed on your cellphone.

Click Apply to save the settings.

3.2.3.2 Wireless Security

In the Wireless page, click Wireless Security. The page shown i n the following figure appears. Wireless security is vi tal to your network to protect the wireless communication among wireless stations, access points and wired network.

If the Security Mode is set to be WEP, the following page appears.

DSL-2750E User Manual

The following table describes the parameters of this page.

Field Description

Security Mode

Configure the wireless encryption mode. You can choose None, WEP, Auto (WPA or WPA2), WPA 2 Only or WPA Only.  Wired equivalent privacy (WEP) encrypts data frames before transmitting over the wireless network.  Wi-Fi protected access (WPA) is a subset of the IEEE802.11i security specification draft.  WPA2 Mixed is the collection of WPA and

DSL-2750E User Manual

Field Description

WPA2 encryption modes. The wireless client

establishes the connection between the modem through WPA or WPA2. Key differences between WPA and WEP are user authentication and improved data encryption.

WEP Key Length

Choose the WEP key length. You can Choose

64-bit

128-bit

Choose WEP Key

Choose the index of WEP Key. You can choose Key 1, 2, 3 or 4.

WEP Key 1/2/3/4

The Encryption keys are used to encrypt the data. Both the modem and wireless stations must use the same encryption key for data transmission.

The default key 1 is 1234567890.

Authentication

There are 2 authentications in WEP encryption. Open and Share key. Both authentications support WEP encryption. But the message header is different in wireless broadcast.

If the Security Mode is set to be Auto (WPA or WPA 2), WPA2 only, or WPA only, the following page appears.

DSL-2750E User Manual

The above figure shows the when the Security Mode is set as Auto (WPA or

WPA2). The following table describes the parameters in this page.

Field

Description

WPA Encryption

You can select WPA encryption to be AES or

TKIP+AES

WPA Mode

 Select Auto (WPA or WPA2)-PSK, enter the

pre-shared key in the Pre-Shared Key field.

 Select Auto (WPA or WPA2)-Enterprise

(RADIUS), enter the port, IP address, and password of

the Radius server. You need to enter the username

and password provided by the Radius server when the

wireless client connects the modem.

Group Key When WPA encryption is applied, messages sent are

DSL-2750E User Manual

Field

Description

Update Interval encrypted with a password. For higher security, WPA

password is updated periodically. This value is the

update interval of the WPA password.

Click Apply to save the settings.

3.2.4 Local Network

You can configure the LAN IP address ac cording to the actual application. The preset IP address is 192.168.1.1. You can use the default settings and DHCP service to manage the IP settings for the private network. The IP address of the device is the bas e address used for DHCP. To use the device for DHCP on your LAN, the IP address pool used for DHCP must be compatible with the IP address of the device. The IP address available in the DHCP IP address pool changes automatically if you change the IP address of the device. You can also enable the secondary LAN IP address. The two LAN IP addresses must be in different networks. Choose Setup > Local Network. The Local Network page shown in the following figure appears.

DSL-2750E User Manual

The following table describes the parameters in this page

Field

Description

Router IP Address

Enter the IP address of LAN interface. It is recommended to use an address from a block that is reserved for private use. This address block is

192.168.1.1- 192.168.255.254

Subnet Mask

Enter the subnet mask of LAN interface. The range of subnet mask is from 255.255.0.0-255.255.255.254.

Domin Name

Enter the domain name if you know. If you leave this blank, the domain name obtained by DHCP from the ISP is used. You must enter host name (system name) on each individual PC. The domain name can be assigned from the router through the DHCP

DSL-2750E User Manual

Field

Description

server. Configure the second IP Address and Subnet Mask for LAN

Select it to enable the secondary LAN IP address.

The two LAN IP addresses must be in the different

network.

Enable DHCP Server

Enable the router to assign IP addresses, IP default

gateway and DNS Servers to the host in Windows95,

Windows NT and other operation systems that

support the DHCP client. DHCP IP Address

Range

It specifies the first IP address in the IP address pool.

The router assigns IP address that base on the IP

pool range to the host.

DHCP Lease Time

The lease time determines the period that the host

retains the assigned IP addresses before the IP

addresses change.

Click Apply to make the settings take effect. The DHCP RESERVATIONS LIST shown in the following figure appears.

Click Add to add DHCP (optional). The page shown in the following figure appears.

DSL-2750E User Manual

Select Enable to reserve the IP address for the designated PC with the configured MAC address. The Computer Name helps you to recognize the PC with the MAC address, for example, Father’s Laptop. Click Apply to save the settings. After the DHCP reservation is saved, the DHCP reservations list displays the configuration.

3.2.5 LAN IPv6

Choose Setup > LAN IPv6. The page shown in the following figure appears.This page allows you to config IPv6 LAN.

The following table describes the parameters of this page.

Field Description

IPv6 Interface Address

The address through which PCs access the gateway. For example, 192.168.1.1.

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D-Link DSL-2750E User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual