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DSL-2520U
User Manual [ru]
71 pgs3.8 Mb0
User Manual
67 pgs3.1 Mb0
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Dlink DSL-2520U User Manual

User Manual
DSL-2520U
ADSL2/2+ Router with USB and Ethernet Ports
August 2011
DSL-2520U ADSL2/2+ Router with USB and Ethernet Ports
User Manual
Contents
Chapter 1. Introduction..........................................4
Chapter 2. Overview..............................................5
Front Panel...............................................................9
Back Panel...............................................................10
Chapter 3. Installation and Connection..........................12
PC with Ethernet Adapter.................................................13
PC with USB Port.........................................................13
Obtaining IP Address Automatically.......................................14
Chapter 4. Configuring via Web-based Interface..................19
Network Statistics.......................................................19
DSL Status...............................................................20
WAN Status...............................................................21
DHCP.....................................................................22
Routing Table............................................................23
LAN Clients..............................................................24
Connections..............................................................25
Editing Local Interface Parameters.....................................26
Creating ADSL WAN Connection...........................................30
UPnP.....................................................................37
Interface Grouping.......................................................38
DDNS.....................................................................40
DNS......................................................................42
Routing..................................................................43
ADSL.....................................................................45
Remote Access............................................................46
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IP Filters...............................................................48
Virtual Servers..........................................................50
DMZ......................................................................52
Application Rules........................................................53
MAC Filter...............................................................56
URL Filter...............................................................59
Administrator Password...................................................61
Configuration............................................................62
System Log...............................................................63
Firmware Upgrade.........................................................65
Chapter 5. Abbreviations and Acronyms...........................66
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Introduction

CHAPTER 1. INTRODUCTION

Contents and Audience

This manual describes the router DSL-2520U 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
192.168.1.1
Information An important note.
!
A name of a menu, menu item, control (field, checkbox, drop-down list, button, etc.).
Data that you should enter in the specified field.

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, and provides safety instructions.
Chapter 3 explains how to install the router DSL-2520U 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 introduces abbreviations and acronyms used in this manual.
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Overview

CHAPTER 2. OVERVIEW

General Information

The DSL-2520U device is an affordable high-end ADSL router developed for home and SOHO (Small Office/Home Office) networks. It provides fast and simple broadband access to the Internet and a shared connection for multi users.
DSL-2520U provides all the essentials for creating a secure high-speed wired network: ADSL/ADSL2/ADSL2+ standards, Fast Ethernet standard, the built-in firewall, the QoS engine, and numerous additional features.
The router is equipped with an ADSL port to connect to an ADSL line and an Ethernet port, which can be used to connect one computer or switch. The device is also equipped with a USB port, to which you can connect a single computer.
The router DSL-2520U 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 the router DSL-2520U via the user-friendly web­based interface (the interface is available in several languages).
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Specifications

Interfaces:
• ADSL: 1 RJ-11 port
• LAN: 1 RJ-45 10/100BASE-TX Fast Ethernet port with auto-MDI/MDIX
• USB: 1 port 1.1, type B.
ADSL Standards:
• ADSL:
◦ full rate 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.
Overview
• ADSL2+:
◦ ITU-T G.992.5 Annex A/M.
WAN Connection Types:
• PPPoA
• PPPoE
• IPoE
• IPoA
• 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.
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Network Protocols and Functions:
• Static IP routing
• NAT
• DHCP server/client/relay
• DNS relay
• DDNS
• UPnP
• Support of VLAN
• IGMP proxy.
Firewall and Access Management Functions:
• NAT firewall
Overview
• Stateful Packet Inspection (SPI)
• URL filter
• Packet filtering (IP/ICMP/TCP/UDP)
• Virtual servers
• Prevention of DoS attacks
• Intrusion detection system
• DMZ
• Port Triggering.
QoS:
• Interface grouping
• 3 priority queues.
Configuration 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.
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Power:
• External power adapter DC 5V/1A
• ON/OFF power switch
• Reset to Factory Defaults button.
Operating Temperature:
Overview
• From 0
0
C to 40 0C (from 32 0F to 104 0F).
Storage Temperature:
• From -20 0C to 65 0С (from -4 0F to 149 0F).
Humidity:
• From 5% to 95% non-condensing.
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Product Appearance

Front Panel

Figure 1. Front panel view.
LED Mode Description
Overview
Power
Status
LAN
USB
DSL
Internet
Solid green
No light
Solid red
Blinking green
No light
Solid green
Blinking green
Solid green
Blinking green
Solid green
Blinking green
No light
Solid green
No light
Solid red
The router is powered on.
The router is powered off.
The router is in the crash recovery mode.
Traffic (Internet traffic) is passing through the router.
A failure of the system.
A device is connected to the port.
The LAN port is active (upstream or downstream traffic).
A device is connected to the port.
The USB port is active (upstream or downstream traffic).
DSL has been synchronized.
Detecting a carrier signal and synchronizing DSL.
No carrier signal.
A WAN connection is established.
The router is in the bridge mode or no WAN connection is established.
An authorization failure.
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Back Panel

Figure 2. Back panel view.
Port Description
Overview
DSL
USB
LAN
RESET
ON/OFF
5V=1A
A DSL port to connect the router to the telephone line.
A USB port to connect to a single computer.
An Ethernet port to connect a computer/switch.
A button to restore the factory default settings.
To restore the factory defaults, push the button (with the device turned on), hold it for 10 seconds, and then release the button.
A button to turn the router on/off.
Power connector.
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Delivery Package

The following should be included:
• Router DSL-2520U
• Power adapter DC 5V/1A
• RJ-11 telephone cable
• Straight-through Ethernet cable (CAT 5E)
• USB cable
• Splitter
• CD-ROM with “User Manual” and “Quick Installation Guide”
• “Quick Installation Guide” (brochure).
Overview
Using a power supply with a different voltage rating than the one included will cause
!
damage and void the warranty for this product.

Safety Instructions

Place your router on a flat horizontal surface or mount the router on the wall (the mounting holes are located on the bottom panel of the device). Make sure that the router is provided with sufficient ventilation.
To prevent overheating, do not obstruct the ventilation openings of the router.
Plug the router into a surge protector to reduce the risk of damage from power surges and lightning strikes.
Operate the router only from an electrical outlet with the correct power source as indicated on the adapter.
Do not open the cover of the router. Otherwise any warranty will be invalidated.
Unplug the equipment before dusting and cleaning. Use a damp cloth to clean the equipment. Do not use liquid/aerosol cleaners or magnetic/static cleaning devices.
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Installation and Connection

CHAPTER 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 router DSL-2520U (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.
NIC (Ethernet Adapter)
Any computer that uses the router should be equipped with an Ethernet adapter (NIC). If your computer is not equipped with such a device, install an Ethernet adapter prior to using the router.
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Installation and Connection

Connecting to PC (in OS Windows XP)

PC with Ethernet Adapter

1. Make sure that your PC is powered off.
2. Connect an Ethernet cable between the Ethernet port located on the back panel of the router and the Ethernet port of your PC.
3. 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.
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 your PC and wait until your operating system is completely loaded.

PC with USB Port

Do not connect your router to your PC until the USB driver is installed.
!
1. Turn on your computer and wait until the operating system is completely loaded. Insert the CD from the router's delivery package into the CD ROM drive. Open the disk and go to the USBDriver folder, then run the setup.exe file. Wait until the USB driver is installed. When the installation is completed, click the Finish button.
2. 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. 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.
4. Connect the USB cable between the USB port located on the back panel of the router and the USB port of your PC.
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Installation and Connection

Obtaining IP Address Automatically

1. Click the Start button and proceed to the Control Panel > Network and Internet Connections > Network Connections window.
2. In the Network Connections window, right-click the relevant Local Area Connection icon and select the Properties line in the menu displayed.
Figure 3. The Network Connections window.
3. In the Local Area Connection Properties window, on the General tab, in the This connection uses the following items section, select the Internet Protocol (TCP/IP) line. Click the Properties button.
Figure 4. The Local Area Connection Properties window.
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Installation and Connection
4. Select the Obtain an IP address automatically radio button. Click the OK button.
Figure 5. The Internet Protocol (TCP/IP) Properties window.
Click the ОК button. Now your computer is configured to obtain an IP address automatically.
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Installation and Connection

Connecting to Web-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, 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: 192.168.1.1). Press the Enter key.
Figure 6. Connecting to the web-based interface of the DSL-2520U 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 7. 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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Installation and Connection
Figure 8. 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 9. Changing the language of the web-based interface.
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Installation and Connection

Saving and Restoring Settings

Note that you should regularly save the changes of the router's settings to the non-
!
The router's web-based interface displays the notification on unsaved changes at the top of the page.
You can save the router's settings via the top-page menu displayed when the mouse pointer is over the System caption.
volatile memory.
Figure 10. The notification on unsaved changes.
Figure 11. 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 back 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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Configuring via Web-based Interface
CHAPTER 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 12. The Status / Network statistics page.
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Configuring via Web-based Interface

DSL Status

The information shown on the tabs of the Status / DSL status page can be used for troubleshooting and diagnosing connection problems.
Figure 13. The Status / DSL status page.
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WAN Status

The Status / WAN status page displays active WAN connections.
Configuring via Web-based Interface
Figure 14. The Status / WAN status page.
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