D-Link DIR-451 - 3G Mobile Router User manual

iD-Link DIR-451 User Manual
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Trademarks
D-Link and the D-Link logo are trademarks or registered trademarks of D-Link Corporation or its subsidiaries in the
United States or other countries. All other company or product names mentioned herein are trademarks or registered
trademarks of their respective companies.
Copyright © 2007 by D-Link Systems, Inc.
All rights reserved.This publication may not be reproduced, in whole or in part, without prior expressed written permission
from D-Link Systems, Inc.
Preface

iiD-Link DIR-451 User Manual
Table of Contents
Preface...........................................................................i
Trademarks ............................................................... i
Product Overview ........................................................1
Package Contents....................................................1
System Requirements .............................................1
Introduction.............................................................. 2
Features................................................................... 3
Hardware Overview .................................................5
Connections....................................................... 5
LEDs ..................................................................6
Installation....................................................................7
Connect to your Network .........................................7
Wireless Installation Considerations........................9
Configuration.............................................................10
Web-based Configuration Utility ............................10
Setup Wizard ................................................... 11
UMTS/HSDPA Setup ....................................... 14
Wireless Settings .............................................15
Network Settings.............................................. 17
DHCP Server Settings .....................................18
Virtual Server................................................... 19
Port Forwarding ...............................................20
Application Rules .............................................21
Network Filter................................................... 22
Website Filter ................................................... 23
Firewall Settings............................................... 24
Advanced Wireless Settings ............................ 25
Advanced Network Settings............................. 26
Administrator Login Name:........................... 27
Administrator Password:...............................27
Remote Management:..................................27
Administrator Settings...................................... 27
Time Settings................................................... 28
System Settings............................................... 29
Firmware Upgrade ........................................... 30
DDNS............................................................... 31
System Check.................................................. 32
Schedules ........................................................33
Log Settings..................................................... 34
Syslog ..............................................................35
Email Settings.................................................. 36
Device Information ........................................... 37
Log................................................................... 38
Stats................................................................. 39
Wireless Stats.................................................. 39
Support ............................................................ 40
Table of Contents

iiiD-Link DIR-451 User Manual
Table of Contents
Wireless Security.......................................................41
What is WEP?........................................................ 41
Configure WEP ......................................................42
What is WPA? ........................................................ 43
Configure WPA-PSK .............................................. 44
Configure WPA (RADIUS)......................................45
Connect to a Wireless Network ................................ 46
Using Windows Vista™...........................................46
Configure Wireless Security.............................47
Using Windows®XP............................................... 49
Configure WEP ................................................50
Configure WPA-PSK ........................................ 52
Troubleshooting.........................................................54
Wireless Basics .........................................................56
What is Wireless? ..................................................57
Tips........................................................................ 59
Wireless Modes .....................................................60
Networking Basics .................................................... 61
Check your IP address ..........................................61
Statically Assign an IP address ............................. 62
Technical Specifications...........................................63
Contacting Technical Support.................................. 65
Warranty ..................................................................... 66
GNU/Linux GPL.......................................................... 72
GNU General Public License................................. 73
Registration................................................................79

1D-Link DIR-451 User Manual
Section 1 - Product Overview
• D-Link DIR-451 Mobile Router
• Power Adapter
• Ethernet Cable
• Manual and Warranty on CD
System Requirements
• A compatible 32-bit PCMCIA (UMTS or HSDPA) card with service*.
• Computers with Windows®, Macintosh®, or Linux-based operating systems with an installed Ethernet
adapter
• Internet Explorer Version 6.0 or Netscape Navigator™Version 6.0 and above (for configuration)
* Subject to services and service terms available from your carrier.
Product Overview
Package Contents
Note: Using a power supply with a different voltage rating than the one included
with the DIR-451 will cause damage and void the warranty for this product.

2D-Link DIR-451 User Manual
Section 1 - Product Overview
Introduction
D-Link announces a fast, mobile network router which allows you to share a high speed Internet connection virtually
anywhere by connecting an UMTS or HSDPA notebook adapter or USB-enable phone.You can get a high speed Internet
connection just about anywhere within your wireless broadband network. This router is extremely useful in situations
where a wired broadband connection is not available. Quickly set up a Wi-Fi hotspot and provide your workgroup with
an Internet connection to check email and browse the web or share file. Maximize your investment in your mobile
Internet access subscription by using this router as a fixed broadband Internet solution for the home instead of paying
additional fees for cable or DSL.
ADVANCED NETWORK SECURITY
The 3G Mobile Router creates a secure Wi-Fi®network by supporting the latest wireless security features to prevent
unauthorized access. Support for WEP, WPA, and WPA2 ensure that you will be able to secure your Wi-Fi network,
regardless of your client devices. In addition, the 3G Mobile Router utilizes dual active firewalls (SPI and NAT) to prevent
potential attacks from across the Internet.
EASY TO INSTALL AND USE
The D-Link 3G Mobile Router sets up in minutes, making it easy to use while on–the-go. Remaining backward compatible
with 802.11b devices, this router ensures that it will work with legacy wireless equipment you already own.This eliminates
the necessity of incurring additional expenses with upgrading your current wireless equipment. You can also directly
connect Ethernet-based devices to its built-in 4-port full-duplex 10/100 switch.
Set up a wireless network with the D-Link 3G Mobile Router DIR-451 and provide your users with a secure, high-speed
connection to the Internet anytime, anywhere*.
* Requires third party mobile Internet access subscription. Check with your service provider for service coverage and applicable
fees. D-Link does not guarantee compatibility with all UMTS or HSDPA wireless networks or third party Internet PC cards.

3D-Link DIR-451 User Manual
Section 1 - Product Overview
Device Interfaces
• LAN Ethernet Support
• 4 Port 10/100 Mbps switch
• Complies with IEEE 802.3u specification
• Supports Auto-Negotiation
• Supports Auto-MDI/MDIX
• Supports IEEE 802.3x Flow Control in Full Duplex mode
• 3G Module Slot
• Connecting an UMTS or HSDPA Notebook Adapter
Function support
• Network Address Translation
• Stateful Packet Inspection
• TCP Connection state & sequence number validation
• Virtual Server
• Virtual Server is used to allow Internet users access to LAN services.
• Port Triggering / Special Applications support
• Special Application is used to run applications that require multiple connections.
• MAC Address Filtering
• Apply to WLAN and/or LAN. Select type of filter - Allow list or Deny list 20 Entries.
• DHCP Server
• Set up as a DHCP Server to distribute IP addresses to the LAN.
• DNS Relay
• WAN DNS Servers if available OR DNS requests directed to the Gateway IP address.
• Access Control
• Allow Policy Based on Schedule & IP Address
• Allow all WEB access OR Allow access to a specified list of domain names (40 Domains)
Features

4D-Link DIR-451 User Manual
Section 1 - Product Overview
• Web base setup wizard
• Step by step setting procedure
• L2TP Pass Through
• PPTP Pass Through
• IPsec Pass Through
CONFIGURATION & ADMINISTRATION
• Web based interface
• Web Based Configuration Wizard
• Dynamic DNS
• E-mail Reporting
• Statistics
• Firmware upgrade
• Current Time & Daylight savings adjustment
• Configuration Save & Restore
• Remote management
• Device Manager
WIRELESS FEATURES
• SuperG & Turbo (108 Mbps) modes
• Wireless Security:
• WEP 64/128 bit
• WPA
• WPA-PSK
• Channel Select
• SSID Broadcast
• Tx Power Adjust
• WMM
• WCN 1.0
* Maximum wireless signal rate derived from IEEE Standard 802.11g specifications. Actual data throughput will vary. Network conditions and
environmental factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput
rate. Environmental conditions will adversely affect wireless signal range.

5D-Link DIR-451 User Manual
Section 1 - Product Overview
Hardware Overview
Connections
Reset Button
Pressing the Reset Button restores
the router to its original factory default
settings.
LAN Ports
These ports automatically sense
the cable type when connecting to
Ethernet-enabled computers. These
are Auto MDI/MDIX ports.
Internet Slot
Use this slot if a 32-bit PCMCIA
card is used for your connection.
USB
Connect a USB 1.1 or 2.0 flash
drive to configure the wireless
settings using WCN.
Power Receptor
Receptor for the
Power Adapter.

6D-Link DIR-451 User Manual
Section 1 - Product Overview
Hardware Overview
LEDs
WAN LED
A solid light indicates connection
on the WAN port. This LED blinks
during data transmission.
WLAN LED
A solid light indicates that the wireless
segment is ready. This LED blinks during
wireless data transmission.
LAN LEDs
A solid light indicates a connection to an
Ethernet-enabled computer on ports 1-4.
The LED blinks during data transmission.
Power LED
A solid light indicates a proper
connection to the power supply.
Status LED
A blinking blue light indicates
that the DIR-451 is functioning
properly.
USB LED
Insert a USB flash drive with WCN information.
The LED will blink 3 times if it successfully
transfers the wireless settings.

7D-Link DIR-451 User Manual
Section 2 - Installation
Connect to your Network
Installation
This section will walk you through the installation process. Placement of the router is very important. Do not place the
router in an enclosed area such as a closet, cabinet, or in the attic or garage.
Note: Ensure that the power to your DIR-451 Mobile Router is not connected before performing the installation
steps below.
32-bit PCMCIA (UMTS or HSDPA) Card Connection
Note: To preserve the life of your phone’s battery, it is recommended that you use your phone’s charging cradle when
connected to the DIR-451 Mobile Router.
1. Attach the antenna.
a. Remove the antenna from its plastic wrapper.
b. Screw the antenna in a clockwise direction to the back panel of the unit.
c. Once secured, position the antenna upward at its connecting joint. This will ensure optimal reception.
2. Insert your wireless 32-bit PCMCIA (UMTS or HSDPA) card into the internet 32-bit PCMCIA Card Slot.
3. Insert the Ethernet cable into LAN Port 1 on the back panel of the DIR-451 Mobile Router, and an available Ethernet
port on the network adapter in the computer you will use to configure the unit.
Note: The DIR-451 Mobile Router LAN Ports are “Auto-MDI/MDIX.” This provides either patch or crossover
Ethernet cable LAN Port access.

8D-Link DIR-451 User Manual
Section 2 - Installation
4. Connect the power adapter to the receptor on the back panel of your DIR-451 Mobile Router. Then plug the other
end of the power adapter into the wall outlet or power strip.
a. The Power LED will turn ON to indicate power has been applied.
b. Other LEDs will flash ON and OFF as the DIR-451 Mobile Router performs initialization and Internet connection
processes. This will take a few minutes.
c. When complete, the following LEDs will illuminate blue: Power, Status, WAN, WLAN, and LAN Port 1 (or
your specific LAN Port connection).

9D-Link DIR-451 User Manual
Section 2 - Installation
Wireless Installation Considerations
The D-Link mobile router lets you access your network using a wireless connection from virtually anywhere within the
operating range of your wireless network. Keep in mind, however, that the number, thickness and location of walls,
ceilings, or other objects that the wireless signals must pass through, may limit the range.Typical ranges vary depending
on the types of materials and background RF (radio frequency) noise in your home or business. The key to maximizing
wireless range is to follow these basic guidelines:
1. Keep the number of walls and ceilings between the D-Link router and other network devices to a minimum
- each wall or ceiling can reduce your adapter’s range from 3-90 feet (1-30 meters.) Position your devices
so that the number of walls or ceilings is minimized.
2. Be aware of the direct line between network devices. A wall that is 1.5 feet thick (.5 meters), at a
45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree angle it looks over 42 feet
(14 meters) thick! Position devices so that the signal will travel straight through a wall or ceiling (instead
of at an angle) for better reception.
3. Building Materials make a difference. A solid metal door or aluminum studs may have a negative effect on
range. Try to position access points, wireless routers, and computers so that the signal passes through
drywall or open doorways. Materials and objects such as glass, steel, metal, walls with insulation, water
(fish tanks), mirrors, file cabinets, brick, and concrete will degrade your wireless signal.
4. Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that
generate RF noise.
5. If you are using 2.4GHz cordless phones or X-10 (wireless products such as ceiling fans, lights, and
home security systems), your wireless connection may degrade dramatically or drop completely. Make
sure your 2.4GHz phone base is as far away from your wireless devices as possible.The base transmits
a signal even if the phone in not in use.

10D-Link DIR-451 User Manual
Section 3 - Configuration
Configuration
This section will show you how to configure your new D-Link mobile router using the web-based configuration utility.
Web-based Configuration Utility
To access the configuration utility, open a web-browser
such as Internet Explorer and enter the IP address of
the router (192.168.0.1).
Type admin for the username and leave the password
blank.
If you get a Page Cannot be Displayed error, please
refer to the Troubleshooting section for assistance.

11D-Link DIR-451 User Manual
Section 3 - Configuration
Setup Wizard
You may run the setup wizard to quickly setup your router.
Click Setup Wizard to launch the wizard.
Click Launch Internet Connection Setup Wizard to begin.
Click Setup Wizard
Click Launch Internet Connection
Setup Wizard to begin.

12D-Link DIR-451 User Manual
Section 3 - Configuration
Click Next to continue.
Create a new password and then click Next to continue.
Select your time zone from the drop-down menu and then click Next
to continue.
Click Next
Click Next
Click Next

13D-Link DIR-451 User Manual
Section 3 - Configuration
Select the Country, ISP and Card from the drop-down list and then click
Username / Password Connection (WWAN). Click Next to continue.
Click Next
Enter your WWAN user name, password, and server information. If you do
not have this information, please contact your ISP. For other information,
you can look at the UMTS/HSDPA Setup section on the next page.
Click Next
Click Connect to save your settings. Once the router is finished rebooting,
click Continue. Please allow 1-2 minutes to connect.
Click Continue

14D-Link DIR-451 User Manual
Section 3 - Configuration
This will divide connection into following three types.
Country: Select the card issue country from the first
drop-down menu.
ISP: Select the card issue provider from the second
drop-down menu.
Card: Select the card name from the third drop-down
menu.
Enter your username for your UMTS/HSDPA connection.
Enter your Password for your UMTS/HSDPA connection.
Enter your Password again for confirmation.
Enter the name of your network server (optional).
The default is *99***1#. This field should not be altered
except when required by your service provider.
Enter the access point name (APN).
Select Enable to have the router automatically reconnect to the Internet if the connection is dropped.
Enter the time to send keep alive package. If user does not input any keep alive sever at below, it will keep
send keep alive package to the default server. (www.dlinkddns.com, ntp1.dlink.com, www.dlink.com, www.
dlink.com, www.d-link.com.tw). If all servers fail to response, the 3G router will hang up 3G connection and
re-dial to carrier/operation.
Enter the IP address(es) of keep alive server(s). If user inputs keep alive servers, this router will send keep
alive package to those servers. If those servers fail to response, the 3G router will hang up 3G connection
and re-dial to carrier/operation.
Country-ISP-Card:
User Name:
Password:
Retype Password:
Server Name:
Dial Number:
UMTS/HSDPA Setup
APN:
Auto-Reconnect:
Keep Alive Interval:
Keep Alive Servers:

15D-Link DIR-451 User Manual
Section 3 - Configuration
Check the box to enable the wireless function. If
you do not want to use wireless, uncheck the box
to disable all the wireless functions.
Service Set Identifier (SSID) is the name of your
wireless network. Create a name using up to 32
characters. The SSID is case-sensitive.
Indicates the channel setting for the DIR-451. By
default the channel is set to 6.The Channel can be
changed to fit the channel setting for an existing
wireless network or to customize the wireless
network. The Auto Channel Scan setting can
be selected to allow the DIR-451 to choose the
channel with the least amount of interference.
Super G is a group of performance enhancement
features that increase end user application
throughput in an 802.11g network. Super G is backwards compatible to standard 802.11g devices. For top performance, all
wireless devices on the network should be Super G capable. Select either Disabled, Super G without Turbo, or Super G
with Dynamic Turbo.
• Disabled - Standard 802.11g support, no enhanced capabilities.
• Super G without turbo - Capable of Packet Bursting, FastFrames, Compression, but no Turbo mode.
• Super G with Dynamic Turbo - Capable of Packet Bursting, FastFrames, Compression, and Dynamic Turbo. This
setting is backwards compatible with non-Turbo (legacy) devices. Dynamic Turbo mode is only enabled when all
devices on the wireless network are Super G with Dynamic Turbo enabled.
Enable Wireless:
Wireless Channel:
Wireless Settings
Wireless Network
Name:
Super G Mode:

16D-Link DIR-451 User Manual
Section 3 - Configuration
Please refer to Section 4 - Wireless Security for information on setting up security and encryption.
Extended Range Mode helps reduce dead spots by improving the reception algorithm, which allows your wireless clients to
associate with the DIR-451 at farther distances. Select either Enabled or Disabled.
Enable this mode if your network is made up of purely 802.11g devices. If you have both 802.11b and 802.11g wireless
clients, uncheck the box.
Select Invisible if you do not want the SSID of your wireless network to be broadcasted by the DIR-451. If Invisible is selected,
the SSID of the DIR-451 will not be seen by Site Survey utilities so your wireless clients will have to know the SSID of your
DIR-451 in order to connect to it.
Extended Range
Mode:
802.11g Only
Mode:
Visibility status: