D-Link DSL-2750U User manual

User Manual
DSL-2750U
3G/ADSL/Ethernet Router with
Wi-Fi and Built-in Swit h
October 2012

DSL-2750U 3G/ADSL/Ethernet Router with
Wi-Fi and Built-in Switch
User Manual
Contents
Chapter 1. Introduction..........................................4
Contents and Audience.......................................................4
Conventions.................................................................4
Document Structure..........................................................4
Chapter 2. Overview..............................................5
General Information.........................................................5
Specifications..............................................................
Product Appearance..........................................................9
Front Panel...............................................................9
Back Panel...............................................................10
Delivery Package...........................................................11
Chapter 3. Installation and Connection..........................12
Before You Begin...........................................................12
Connecting to PC (in OS Windows XP)........................................13
PC with Ethernet Adapter.................................................13
Obtaining IP Address A tomatically.......................................13
PC with Wi-Fi Adapter....................................................15
Config ring Wi-Fi Adapter................................................16
Connecting to Web-based Interface..........................................17
Saving and Restoring Settings..............................................19
Chapter 4. Configuring via Web-based Interface..................20
Status.....................................................................20
Network Statistics.......................................................20
DSL Stat s...............................................................21
WAN Stat s...............................................................22
DHCP.....................................................................23
Ro ting Table............................................................24
LAN Clients..............................................................25
Net........................................................................2
Connections..............................................................26
Editing Local Interface Parameters.....................................27
Creating 3G WAN Connection.............................................31
Creating ADSL WAN Connection...........................................3
Creating Ethernet WAN Connection....................................... 1
Wi-Fi......................................................................4
Common settings..........................................................46
Basic Settings...........................................................47
Sec rity Settings........................................................49
MAC Filter...............................................................52
Station List.............................................................54
WPS......................................................................55
Using WPS Function via Web-based Interface.............................56
Using WPS Function without Web-based Interface.........................57
Additional Settings......................................................58
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Advanced................................................................... 0
SNMP.....................................................................60
UPnP.....................................................................62
Interface Gro ping.......................................................63
DDNS.....................................................................65
DNS......................................................................67
Ro ting..................................................................68
ADSL.....................................................................70
Remote Access............................................................71
Firewall...................................................................73
IP Filters...............................................................73
Virt al Servers..........................................................76
DMZ......................................................................79
Application R les........................................................80
MAC Filter...............................................................82
USB Modem..................................................................85
Information..............................................................86
PIN......................................................................87
USB Storage................................................................89
Information..............................................................89
Print Server.............................................................90
Samba....................................................................91
Control....................................................................93
Parent Control...........................................................93
URL Filter...............................................................96
System.....................................................................98
Administrator Password...................................................98
Config ration............................................................99
System Log..............................................................100
Firmware Upgrade........................................................102
NTP Client..............................................................103
Chapter 5. Operation Guidelines................................104
Supported USB Modems......................................................104
Safety Instructions.......................................................104
Wireless Installation Considerations......................................105
Creating Two Connections on One Channel...................................10
ADSL WAN Connections....................................................106
Ethernet WAN Connections................................................107
Chapter . Abbreviations and Acronyms..........................109
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DSL-2750U 3G/ADSL/Ethernet Router with
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User Manual
Introduction
CHA TER 1. INTRODUCTION
Contents and Audience
This manual describes the router DSL-2750U and explains how to configure and operate it
This manual is intended for users familiar with basic networking concepts, who create an in-home
local area network, and system administrators, who install and configure networks in offices
Conventions
Example Description
text The body text of the manual
Before You Begin A reference to a chapter or section of this manual
“Quick Installation Guide” A reference to a document
Change A name of a menu, menu item, control (field, checkbox,
drop-down list, button, etc )
192.1 8.1.1 Data that you should enter in the specified field
!Information An important note
Document Structure
Chapter 1 describes the purpose and structure of the document
Chapter 2 gives an overview of the router's hardware and software features and describes its
appearance and the package contents
Chapter 3 explains how to install the router DSL-2750U and configure a PC in order to access its
web-based interface
Chapter 4 describes all pages of the web-based interface in detail
Chapter 5 includes safety instructions, tips for networking and configuring the device, and the list
of supported USB modems
Chapter introduces abbreviations and acronyms used in this manual
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Overview
CHA TER 2. OVERVIEW
General Information
DSL-2750U is a multifunction 3G/ADSL/Ethernet router with Wi-Fi and built-in switch The router
allows accessing the Internet via 3G GSM network (with a 3G USB modem1,2 connected) In
addition, the device allows accessing the Internet via ADSL technology and via Ethernet
technology
The router is equipped with an ADSL port to connect to an ADSL line and 4 Ethernet ports to
connect workstations Due to this feature, DSL-2750U represents a moderate-priced solution for
creating wired networks without an additional switch Any Ethernet port of the device can be used
to connect to a private Ethernet line, and the USB port can be used to connect a USB modem In
addition, you can use the USB port to connect a printer or USB storage
Also DSL-2750U can operate as a base station for connecting wireless devices of the standards
802 11b, 802 11g, and 802 11n* The router supports multiple functions for the wireless interface:
several security standards (WEP, WPA/WPA2), MAC address filtering, and the WPS function
The wireless router DSL-2750U includes a built-in firewall The advanced security functions
minimize threats of hacker attacks, prevent unwanted intrusions to your network, and block access
to unwanted websites for users of your LAN
You can configure and manage the settings of DSL-2750U via the user-friendly web-based
interface (the interface is available in several languages)
1 Not included in the delivery package D-Link does not guarantee compatibility with all USB modems Please, refer
to the Supported USB Modems section, page 104
2 Contact your operator to get information on the service coverage and fees
* The maximum speed of the wireless connection is limited by the chipset up to 200Mbps
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Overview
Specifications
Interfaces:
•ADSL: 1 RJ-11 port
•LAN: 4 RJ-45 10/100BASE-TX Fast Ethernet ports with auto-MDI/MDIX
•WLAN: built-in 802 11b/g/n wireless interface
•USB: USB 2 0 type A port
Wireless Network:
•IEEE 802 11n standard*, IEEE 802 11b/g compliant
•Support of guest wireless network
•WEP data encryption
•WPA/WPA2 security supporting TKIP, AES and TKIP+AES
•MAC-based access to wireless network
•PIN and PBC methods of WPS
•Advanced settings
ADSL Standards:
•ADSL:
◦multi-mode, ANSI T1 413 Issue 2, ITU-T G 992 1 (G dmt) Annex A, ITU-T G 992 2
(G lite) Annex A, ITU-T G 994 1 (G hs)
•ADSL2:
◦ITU-T G 992 3 (G dmt bis) Annex A/L/M, ITU-T G 992 4 (G lite bis) Annex A
•ADSL2+:
◦ITU-T G 992 5 Annex A/L/M
WAN Connection Types:
•3G
•ADSL:
◦PPPoA
◦PPPoE
◦IPoE
◦IPoA
◦Bridge
* The maximum speed of the wireless connection is limited by the chipset up to 200Mbps
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DSL-2750U 3G/ADSL/Ethernet Router with
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Overview
•Ethernet:
◦IPoE
◦PPPoE
◦Bridge
ATM/PPP Protocols:
•Bridged and routed Ethernet encapsulation
•VC-based or LLC-based multiplexing
•ATM Forum UNI3 1/4 0 PVC (up to 8 PVCs)
•ATM Adaptation Layer Type 5 (AAL5)
•ITU-T I 610 OAM F4/F5 loopback
•ATM QoS
•PPP over ATM (RFC 2364)
•PPP over Ethernet (PPPoE)
•Keep-alive for PPP connections
Network Protocols and F nctions:
•Static IP routing
•NAT (Network Address Translation)
•DHCP server/client/relay
•DNS relay
•DDNS
•UPnP
•Support of VLAN
•IGMP proxy
Firewall and Access Management F nctions:
•Network Address Translation (NAT)
•Stateful Packet Inspection (SPI)
•MAC-filtering based on time of day and day of week
•URL filter
•Packet filtering (IP/ICMP/TCP/UDP)
•Virtual servers
•Prevention of DoS attacks
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DSL-2750U 3G/ADSL/Ethernet Router with
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Overview
•Intrusion detection system
•DMZ
•Port Triggering
QoS:
•Interface grouping
•3 priority queues
USB:
•USB modem:
oEnabling/disabling PIN code check
oChanging PIN code
•Print server
•Shared access to USB storage (Samba)
Config ration and Management:
•Multilingual web-based interface for configuration and management
•Access via TELNET
•Firmware update via web-based interface
•Saving/restoring configuration to/from file
•Support of remote logging
•SNMP agent
•Automatic synchronization of system time with NTP server
Power:
•External power adapter DC 12V/1A
•ON/OFF power switch
•ON/OFF Wi-Fi switch
•Reset to Factory Defaults button
•WPS button
Dimensions:
•164 mm x 112 mm x 35 mm
Weight:
•250 g
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DSL-2750U 3G/ADSL/Ethernet Router with
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Overview
Product Appearance
Front Panel
Figure 1. Front panel view.
LED Mode Description
ower
Solid green The router is powered on
No light The router is powered off
Solid red A malfunction of the router
LAN 1-4
Solid green
A device is connected to the port of the router (for the LAN port
configured as the WAN port: the router is connected to an Ethernet
line)
Blinking green The relevant LAN port is active (upstream or downstream traffic)
WLAN
Solid green The router's WLAN is on
Blinking green The WLAN interface is active (upstream or downstream traffic)
W S
Solid green A wireless device is connected to the router's WLAN (lights for
several minutes)
Blinking green Attempting to add a wireless device via the WPS function
USB
Solid green A USB device is connected to the router's USB port
No light No USB device
DSL
Solid green DSL has been synchronized
Blinking green Detecting a carrier signal and synchronizing DSL
No light No carrier signal
Internet
Solid green A WAN connection (ADSL and/or Ethernet) is established
Blinking green The WAN interface is active (upstream or downstream traffic)
Solid red An authorization failure
No light The router is in the bridge mode or no WAN connection (neither
Ethernet nor ADSL) is established
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DSL-2750U 3G/ADSL/Ethernet Router with
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Back Panel
Figure 2. Back panel view.
ort Description
DSL A DSL port to connect the router to the telephone line
LAN 1-4 4 Ethernet ports to connect Ethernet devices One port can be used to connect to a
private Ethernet line
USB A USB port to connect a USB modem, printer, or storage
W S A button to quickly add wireless devices to the router's WLAN
WIRELESS
ON/OFF A button to turn the router's wireless interface on/off
ON/OFF A button to turn the router on/off
12V=1A Power connector
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DSL-2750U 3G/ADSL/Ethernet Router with
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Delivery Package
The following should be included:
•Router DSL-2750U
•Power adapter DC 12V/1A
•RJ-11 telephone cable
•Straight-through Ethernet cable (CAT 5E)
•Splitter
•“Quick Installation Guide” (brochure)
The “User Manual” and “Quick Installation Guide” documents in Russian and English are
available on D-Link website (see ftp dlink ru/pub/ADSL/DSL-2750U/Description/)
!Using a power supply with a different voltage rating than the one included will cause
damage and void the warranty for this product
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DSL-2750U 3G/ADSL/Ethernet Router with
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Installation and Connection
CHA TER 3. INSTALLATION AND CONNECTION
Before You Begin
Please, read this manual prior to installing the device Make sure that you have all the necessary
information and equipment
Operating System
Configuration of the multifunction 3G/ADSL/Ethernet router DSL-2750U (hereinafter referred to
as “the router”) is performed via the built-in web-based interface The web-based interface is
available from any operating system that supports a web browser
Web Browser
The following web browsers are recommended: Windows Internet Explorer, Mozilla Firefox, or
Opera
For successful operation, JavaScript should be enabled on the web browser Make sure that
JavaScript has not been disabled by other software (such as virus protection or web user security
packages) running on your computer
Wired or Wireless NIC (Ethernet or Wi-Fi Adapter)
Any computer that uses the router should be equipped with an Ethernet or Wi-Fi adapter (NIC) If
your computer is not equipped with such a device, install an Ethernet or Wi-Fi adapter prior to
using the router
Wireless Connection
Wireless workstations from your network should be equipped with a wireless 802 11b, g, or n NIC
(Wi-Fi adapter) In addition, you should specify the values of SSID, channel number and security
settings defined in the web-based interface of the router for all these wireless workstations
USB Modem
To connect to the 3G GSM network, you should use a 3G USB modem Connect it to the USB port
of the router (it is recommended to use a USB extension cable), then access the web-based interface
of the router, and you will be able to configure connection to the Internet
!Your USB modem should be equipped with an active identification card (SIM card) of
your operator
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DSL-2750U 3G/ADSL/Ethernet Router with
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Installation and Connection
Connecting to PC (in OS indows XP)
PC with Ethernet Adapter
1 Make sure that your PC is powered off
2 Connect an Ethernet cable between any of four Ethernet ports located on the back panel of
the router and the Ethernet port of your PC
3 To connect via 3G network: connect your USB modem to the USB port located on the back
panel of the router
!If you need to connect or change a USB modem to another one when the router is powered
on, power off the device, connect the modem to the USB port, and power on the router
4 To connect the router to a DSL line: connect a phone cable between the DSL port of the
router and the ADSL OUT port of the splitter Connect your phone to the PHONE port of
the splitter Then connect another phone cable between a phone jack and the ADSL IN port
of the splitter
5 To connect the router to an Ethernet line: connect the Ethernet cable between any of four
Ethernet ports located on the back panel of the router and the Ethernet line
6 Connect the power cord to the power connector port on the back panel of the router, then
plug the power adapter into an electrical outlet or power strip
7 Turn on your PC and wait until your operating system is completely loaded
Obtaining IP Address Automatically
1 Click the Start button and proceed to the Control anel > Network and Internet
Connections > Network Connections window
2 In the Network Connections window, right-click the relevant Local Area Connection
icon and select the roperties line in the menu displayed
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DSL-2750U 3G/ADSL/Ethernet Router with
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Figure 3. The Network Connections window.
3 In the Local Area Connection roperties window, on the General tab, in the This
connection uses the following items section, select the Internet rotocol (TC /I )
line Click the roperties button
Figure 4. The Local Area Connection Properties window.
4 Select the Obtain an I address automatically radio button Click the OK button
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Figure 5. The Internet Protocol (TCP/IP) Properties window.
Click the ОК button Now your computer is configured to obtain an IP address automatically
PC with Wi-Fi Adapter
1 To connect via 3G network: connect your USB modem to the USB port located on the back
panel of the router
!If you need to connect or change a USB modem to another one when the router is powered
on, power off the device, connect the modem to the USB port, and power on the router
2 To connect the router to a DSL line: connect a phone cable between the DSL port of the
router and the ADSL OUT port of the splitter Connect your phone to the PHONE port of
the splitter Then connect another phone cable between a phone jack and the ADSL IN port
of the splitter
3 To connect the router to an Ethernet line: connect the Ethernet cable between any of four
Ethernet ports located on the back panel of the router and the Ethernet line
4 Connect the power cord to the power connector port on the back panel of the router, then
plug the power adapter into an electrical outlet or power strip
5 Turn on Wi-Fi: push the relevant button on the back panel of the router
6 Turn on your PC and wait until your operating system is completely loaded
7 Turn on your Wi-Fi adapter As a rule, modern notebooks with built-in wireless NICs are
equipped with a button or switch that turns on/off the wireless adapter (refer to your PC
documents) If your PC is equipped with a pluggable wireless NIC, install the software
provided with your Wi-Fi adapter
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Con iguring Wi-Fi Adapter
1 Click the Start button and proceed to the Control anel > Network and Internet
Connections > Network Connections window
2 Select the icon of the wireless connection and make sure that your Wi-Fi adapter is on
Figure 6. The Network Connections window.
3 Search for available wireless networks
4 In the opened Wireless Network Connection window select the needed wireless
network (DSL_2750) and click the Connect button
After that the Wireless Network Connection Status window appears
!If you perform initial configuration of the router via Wi-Fi connection, note that
immediately after changing the wireless default settings you will need to reconfigure the
wireless connection using the newly specified settings
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Connecting to eb-based Interface
When you have configured your computer, you can access the web-based interface and configure
needed parameters (for example, create an interface to connect to the Internet, configure the
connection to 3G network, change the parameters of the wireless network, specify the settings of
the firewall, edit the password for the administrator account, etc )
1 Start a web browser (see the Before You Begin section, page 12)
2 In the address bar of the web browser, enter the IP address of the router (by default, the
following IP address is specified: 192.1 8.1.1) Press the Enter key
Figure 7. onnecting to the web-based interface of the DSL-2750U device.
3 On the opened page, enter the username (login) and password for the administrator account
(by default, the following username and password are specified: admin, admin) Then
click the Enter button
Figure 8. The login page.
!If the error “ The page cannot be displayed ” (or “ Unable to display the page ”/“ Could not
connect to remote server ”) occurs upon connecting to the web-based interface of the router,
make sure that you have properly connected the router to your computer
After successful registration the system statistics page opens The page displays general information
on the router and its software
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DSL-2750U 3G/ADSL/Ethernet Router with
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Figure 9. The system statistics page.
!For security reasons, it is strongly recommended to change the administrator password
upon initial configuration of the router To do this, proceed to the System /
Administrator password page
The web-based interface of the router is multilingual Select a needed language from the menu
displayed when the mouse pointer is over the Language caption You can change the language of
the web-based interface in any menu item
Figure 10. hanging the language of the web-based interface.
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DSL-2750U 3G/ADSL/Ethernet Router with
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Saving and Restoring Settings
!Note that you should regularly save the changes of the router's settings to the non-
volatile memory
The router's web-based interface displays the notification on unsaved changes at the top of the page
Figure 11. The notification on unsaved changes.
You can save the router's settings via the top-page menu displayed when the mouse pointer is over
the System caption
Figure 12. The top-page menu.
Click the Reboot line if you have already saved the router's settings
Click the Save&Reboot line to save new settings and immediately reboot the router
Click the Save line to save new settings to the non-volatile memory and continue configuring the
device Also you can save the device's parameters via the Save button on the System /
Configuration page
Click the Backup line and follow the dialog box appeared to save the configuration (all settings of
the router) to your PC Also you can save the router's configuration to your PC via the Backup
button on the System / Configuration page
Click the Factory line to restore the factory default settings Also you can restore the factory
defaults via the Factory button on the System / Configuration page
Also you can restore the factory default settings via the hardware Reset button located on the
bottom panel of the router Use a small paperclip to activate the button; insert it into the hole (with
the device turned on), push, and hold for 10 seconds Release the button and wait until the router is
rebooted (about a minute) Now you can access the web-based interface of the router using the
default IP address, username and password
When you have configured all needed settings, click the Logout line
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DSL-2750U 3G/ADSL/Ethernet Router with
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Configuring via Web-based Interface
CHA TER 4. CONFIGURING VIA WEB-BASED
INTERFACE
Status
This menu displays data on the current state of the router The following data are represented: DSL
connection status, active WAN connections, IP addresses leased by DHCP server, the routing table,
network statistics, and data on network devices connected to the router
Network Statistics
On the Status / Network statistics page, you can view statistics for all interfaces (connections)
existing in the system For each connection the following data are displayed: state, IP address,
subnet mask and gateway (if the connection is established), MAC address, MTU value, and volume
of data received and transmitted (with increase of the volume the units of measurement are changed
automatically: byte, Kbyte, Mbyte, Gbyte)
Figure 13. The Status / Network statistics page.
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