D Link IR604A1 Wireless N 150 Pocket Router & Access Point User Manual
D Link Corporation Wireless N 150 Pocket Router & Access Point
  
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iD-Link DIR-604 User Manual
D-Link reserves the right to revise this publication and to make changes in the content hereof without obligation to 
notify any person or organization of such revisions or changes.
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 © 2010 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-604 User Manual
Table of Contents
Preface...........................................................................i
Manual Revisions ..................................................... i
Trademarks .............................................................. i
Product Overview ........................................................ 1
Package Contents ...................................................1
System Requirements ............................................. 2
Features .................................................................. 3
Hardware Overview ................................................. 4
Connections ....................................................... 4
Top View ............................................................ 5
Switching Between WAN Mode/3G Router 
Mode .................................................................. 6
Installation ....................................................................7
Before you Begin ..................................................... 7
Wireless Installation Considerations ........................ 8
Network Diagram  ....................................................9
WAN Connection ............................................... 9
Network Diagram  ..................................................10
3G Connection ................................................. 10
Connect to Cable/DSL/Satellite Modem ................ 11
Connect to a 3G Internet Service .......................... 13
Connect to Another Router .................................... 14
Conguration ............................................................. 16
Web-based Conguration Utility ............................ 16
Internet Connection Setup Wizard (3G Mode) .17
Manual Conguration (3G Mode) .................... 20
3G Internet Connection ................................ 20
Internet Connection Setup Wizard (WAN 
Mode) ...............................................................21
Manual Conguration (WAN Mode) ................. 28
Static IP Address .......................................... 29
Dynamic IP Address (DHCP) .......................30
PPPoE (Username/Password) .....................31
PPTP (Username/Password) .......................33
L2TP (Username/Password) ........................35
Russia PPTP (Dual Access) ........................37
Russia PPPoE (Dual Access) ...................... 39
Wireless Settings ............................................. 41
Manual Wireless Network Setup ..................42
Network Settings .............................................. 44
DHCP Server Settings .................................45
DHCP Reservation .......................................46
Virtual Server ...................................................47
Port Forwarding ............................................... 49
Application Rules .............................................50
QoS Engine ..................................................... 51
Network Filters ................................................. 52
Website Filters ................................................. 53
Firewall Settings .............................................. 54
Firewall Rules ............................................... 55
Advanced Wireless Settings ............................ 57
Wi-Fi Protected Setup ...................................... 58
Table of Contents

iiiD-Link DIR-604 User Manual
Table of Contents
Advanced Network Settings ............................. 59
UPnP ............................................................59
Internet Ping Block .......................................59
Internet Port Speed ......................................59
Multicast Streams ......................................... 59
Administrator Settings ...................................... 60
Change Password ........................................60
Remote Management ................................... 60
Time Settings ................................................... 61
E-mail Settings ................................................. 62
System Settings ............................................... 63
Update Firmware ............................................. 64
DDNS ............................................................... 65
System Check .................................................. 66
Schedules ........................................................67
Device Information ........................................... 68
Logs .................................................................69
Statistics .......................................................... 70
Internet Sessions .............................................71
Wireless ...........................................................72
Support ............................................................ 73
Wireless Security.......................................................74
What is WPA? .......................................................74
Wireless Connection Setup Wizard ....................... 75
Add Wireless Device with WPS Wizard ................. 78
Congure WPA-Personal (PSK) ............................ 79
Congure WPA-Enterprise (RADIUS) ................... 80
Connect to a Wireless Network ................................ 81
Using Windows Vista® ........................................... 81
Congure WPA/WPA2 ..................................... 82
Connect Using WCN 2.0 .................................. 84
Using Windows® XP ............................................... 85
Congure WPA-PSK ........................................ 86
Troubleshooting ........................................................ 88
Wireless Basics ......................................................... 92
What is Wireless? .................................................. 93
Tips ........................................................................ 95
Wireless Modes ..................................................... 96
Networking Basics .................................................... 97
Check your IP address ..........................................97
Statically Assign an IP address ............................. 98
Technical Specications........................................... 99

1D-Link DIR-604 User Manual
Section 1 - Product Overview
Product Overview
Note: Using a power supply with a different voltage rating than the one included with the DIR-604 will cause damage and void the warranty for this 
product.
Package Contents
D-Link DIR-604 Wireless 11n Router 
Power Adapter
Ethernet Cable
USB Cable

2D-Link DIR-604 User Manual
Section 1 - Product Overview
Network Requirements
• An Ethernet-based Cable or DSL modem
• IEEE 802.11n/g wireless clients
• 10/100 Ethernet
Web-based Conguration 
Utility Requirements
Computer with the following:
• Windows®, Macintosh, or Linux-based operating 
system 
• An installed Ethernet adapter
Browser Requirements:
• Internet Explorer 6.0 or higher
• Mozilla 1.7.12 or higher
• Firefox 1.5 or higher
• Safari 1.0 or higher (with Java 1.3.1 or higher) 
• Flock 0.7.14 or higher
• Opera 6.0 or higher 
Windows® Users: Make sure you have the latest version 
of Java installed. Visit www.java.com to download the 
latest version.
System Requirements

3D-Link DIR-604 User Manual
Section 1 - Product Overview
• Faster Wireless Networking - The DIR-604 provides up to 300Mbps* wireless connection with other 
802.11n wireless clients. This capability allows users to participate in real-time activities online, such as 
video streaming, online gaming, and real-time audio. 
• Compatible with 802.11g Devices - The DIR-604 is still fully compatible with the IEEE 802.11g standard, 
so it can connect with existing 802.11g PCI, USB, and Cardbus adapters.
• Advanced Firewall Features - The Web-based user interface displays a number of advanced network 
management features including: 
• Content Filtering - Easily applied content ltering based on MAC Address, URL, and/or 
Domain Name.
• Filter Scheduling - These lters  can be scheduled to be active on  certain days or for a 
duration of hours or minutes.
• Secure Multiple/Concurrent Sessions - The DIR-604 can pass through VPN sessions. It 
supports multiple and concurrent IPSec and PPTP sessions, so users behind the DIR-604 
can securely access corporate networks.
• User-friendly Setup Wizard - Through its easy-to-use Web-based user interface, the DIR-604 lets you 
control what information is accessible to those on the wireless network, whether from the Internet or from 
your company’s server. Congure your router to your specic settings within minutes.
* Maximum wireless signal rate derived from IEEE Standard 802.11g and Final 802.11n specications. Actual data throughput will vary. Network conditions and 
environmental factors, including volume of network trafc, building materials and construction, and network overhead, lower actual data throughput rate. Environmental 
conditions will adversely affect wireless signal range.
Features

4D-Link DIR-604 User Manual
Section 1 - Product Overview
Power Receptor
Receptor for the supplied power 
adapter.
WPS Button
Press the WPS button for 1 second to initiate the 
WPS  process.  The  LED  indicator  on  the  top  of 
the device will ash blue while a WPS connection 
is being established. The button will light blue for 
300 seconds if a successful WPS connection has 
been made.
Ethernet Port 
In  Router  mode,  the  Ethernet  port  is  used  to 
connect to your WAN connection. In AP mode, the 
Ethernet  port  is  used  to  connect  to  your  switch/
router. In Client mode, the Ethernet port is used to 
connect your computer to a wireless network.   
Hardware Overview
Connections

5D-Link DIR-604 User Manual
Section 1 - Product Overview
WLAN LED 
A  solid  green  light  indicates  that 
the  wireless  segment  is  ready. 
This  LED  blinks  during  wireless 
data transmission.
Power LED 
Lights orange during bootup. Lights 
green when router has booted 
up. A solid green light indicates 
a proper connection to the power 
supply. If the LED blinks orange 
the system has failed.
Ethernet LED
A solid green light indicates that a link 
has been established. This LED blinks 
during  data transmission.
Hardware Overview
Top View
WPS Button
Press  the  WPS  button  for  1  second  to 
initiate  the  WPS  process.  The  button  will 
ash blue while a WPS connection is being 
established. The button will light blue for 300 
seconds  if  a  successful  WPS  connection 
has been made. 

6D-Link DIR-604 User Manual
Section 1 - Product Overview
Hardware Overview
Switching Among AP, Client, and Router Mode
The DIR-604 features a hardware switch located on the bottom of the device that enables users to switch among Router 
mode, Client mode, and AP mode. 
When the DIR-604 is operating in AP mode, the device acts as a basic access point without any routing functionality.
When the DIR-604 is operating in Client mode, the PC that is connected to the device will use it as a wireless network 
interface in order that it can connect to a wireless router or access point.
When the DIR-604 is operating in Router mode, WAN connectivity is achieved via the DIR-604’s Ethernet port. In this 
mode LAN clients need to access the DIR-604 via the DIR-604’s wireless connection.
Mode Switch
Use  to  switch  among  AP  mode, 
Client mode, and Router mode.
Reset Button
Press  the  Reset  button  for  5 
seconds  to  restore  the  Router  to 
its original factory default settings.

7D-Link DIR-604 User Manual
Section 2 - 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. The D-Link wireless 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 (0.5 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 
(sh tanks), mirrors, le 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.
Installation Considerations

8D-Link DIR-604 User Manual
Section 2 - Installation
Connection - AP Mode
To use the DIR-604 in AP Mode, follow the steps 
below:
1.  Ensure you have a broadband Internet connector, 
such as a cable or DSL client line that connects 
the Internet to your home or ofce. 
2.  Connect the cable properly or install the modem.
3.  Connect the cable or modem with the broadband 
router.
4.  Connect  the  DIR-604’s  Ethernet  port  to  your 
LAN. 
5.  Move the switch to wireless AP Mode. 
6.  Connect your PC or notebook to the DIR-604 
using the PC or notebook’s wireless adapter. 

9D-Link DIR-604 User Manual
Section 2 - Installation
Connection - Client Mode
To use the DIR-604 in Client Mode, follow the steps below:
1.  Ensure you have a broadband Internet connector, such as a cable or DSL client line that connects the Internet to 
your home or ofce. 
2.  Connect the cable properly or install the modem.
3.  Connect the cable or modem with the broadband router.
4.  Move the switch to Client Mode. 
5.  Connect your PC or notebook to the DIR-604 using the PC or notebook’s wireless adapter.

10D-Link DIR-604 User Manual
Section 2 - Installation
Connection - Router Mode
To use the DIR-604 in Router Mode, follow the steps below:
1.  Ensure you have a broadband Internet connector, such 
as a cable or DSL client line that connects the Internet to 
your home or ofce. 
2.  Connect the cable properly or install the modem.
3.  Connect the cable or modem with the broadband router.
4.  Move the switch to Router Mode. 
5.   If you want to link with a computer on the Internet, please 
install a wireless dongle on your computer. 
6.  Install the driver on your computer.

11D-Link DIR-604 User Manual
Section 2 - Installation
If your Internet connection is provided using a cable/DSL/satellite modem, carry out the following procedure before 
connecting the router to a cable/DSL/satellite modem:
• Move the AP Mode/Client Mode/Router Mode switch on the DIR-604 so that it is in the Client Mode 
position.
• Congure the wireless settings on the DIR-604 in Client Mode (see “Wireless Connection” on page 17 for 
more information).
• After conguring the wireless settings, move the AP Mode/Client Mode/Router Mode switch so that it 
is in the Router Mode position.
To connect to a cable/DSL/Satellite modem, please follow the steps below:
1. Place the Router in an open and central location. Do not plug the power adapter into the router. 
2. Turn the power off on your modem. If there is no on/off switch, then unplug the modem’s power adapter. Shut down 
your computer.
3. Unplug the Ethernet cable (that connects your computer to your modem) from your computer and place it into the 
Ethernet port on the Router.  
5. Turn on or plug in your modem.  Wait for the modem to boot (about 30 seconds). 
6. Plug the power adapter to the router and connect to an outlet or power strip. Wait about 50 seconds for the router 
to boot. 
7. Turn on your computer. 
8. Use the wireless connection on your computer to connect to the Router, using the wireless settings you congured 
Connect to Cable/DSL/Satellite Modem

12D-Link DIR-604 User Manual
Section 2 - Installation
previously.
9. Verify the link lights on the Router. The power light, Internet light, and the Wireless LAN light should be lit. If not, 
make sure your computer, modem, and router are powered on and verify the cable connections are correct. 
10. Skip to “Conguration” on page 15 to congure your router.

13D-Link DIR-604 User Manual
Section 2 - Installation
If you are connecting the D-Link Router to another router to use as a wireless access point and/or switch, you will have 
to do the following before connecting the Router to your network:
• Move the AP Mode/Client Mode/Router Mode switch on the DIR-604 so that it is in the AP Mode position.
• Disable UPnP™
• Disable DHCP
• Change the LAN IP address to an available address on your network. The Ethernet port on the router 
cannot accept a DHCP address from your other router.
To connect to another router, please follow the steps below:
1. Plug the power into the router. Connect one of your computers to the Ethernet port using an Ethernet cable. Make 
sure your IP address on the computer is 192.168.0.xxx (where xxx is between 2 and 254). Please see the Networking 
Basics section for more information. If you need to change the settings, write down your existing settings before 
making any changes. In most cases, your computer should be set to receive an IP address automatically in which 
case you will not have to do anything to your computer.
2. Open a web browser and enter http://192.168.0.1 and press Enter. When the login window appears, set the user 
name to Admin and leave the password box empty. Click Log In to continue.
3. Click on Advanced and then click Advanced Network. Uncheck the Enable UPnP checkbox. Click Save Settings 
to continue. 
4. Click Setup and then click Network Settings. Uncheck the Enable DHCP Server server checkbox. Click Save 
Settings to continue.
5. Under Router Settings, enter an available IP address and the subnet mask of your network. Click Save Settings to 
save your settings. Use this new IP address to access the conguration utility of the router in the future. Close the 
Connect to Another Router

14D-Link DIR-604 User Manual
Section 2 - Installation
browser and change your computer’s IP settings back to the original values as in Step 1.
6. Disconnect the Ethernet cable from the router and reconnect your computer to your network. 
7. Connect an Ethernet cable into the Ethernet port of the router and connect it to your other router.
8. To congure your wireless network, open a Web browser and enter the IP address you assigned to the router. Refer 
to the Conguration and Wireless Security sections for more information on setting up your wireless network.

15D-Link DIR-604 User Manual
Section 3 - Configuration
Configuration
This section will show you how to congure your new D-Link wireless Router using the Web-based conguration utility.
Web-based Configuration Utility for AP Mode
To  access  the  conguration  utility,  open  a  Web-
browser such as Internet Explorer and enter the IP 
address of the router (192.168.0.1).
Type Admin in the User Name eld and then enter 
your password. Leave the password blank by default. 
Click the Login button to log in to the Router.
If you get a Page Cannot be Displayed error, please 
refer to the Troubleshooting section for assistance.

16D-Link DIR-604 User Manual
Section 3 - Configuration
AP Mode Opening Page
Once logged into the Web interface of the Router in AP Mode, the Device Information page will appear. This displays 
the SSID, Channel, and Encryption status. To make changes to your wireless network, click Setup to access the 
Wireless Connection page.

17D-Link DIR-604 User Manual
Section 3 - Configuration
Wireless Connection
If you want to congure the wireless settings on your 
Router using the wizard, click Wireless Connection 
Setup  Wizard  and  refer  to  “Wireless  Connection 
Setup Wizard” on page 81.
If you want to manually congure the wireless settings 
on your Router, click Manual Wireless Connection 
Setup and refer to the next page.

18D-Link DIR-604 User Manual
Section 3 - Configuration
Manual Wireless Network Setup
Tick  the  check  box  to  enable  the  wireless 
function. If you do not want to use wireless, de-
select the check box to disable all the wireless 
functions.  
Service Set Identier (SSID) is the name of your 
wireless network. Create a name using up to 32 
characters. The SSID is case-sensitive.
The Auto Channel Scan setting can be selected 
to allow the DIR-604 to choose the channel with 
the least amount of interference.
Indicates the channel setting for the DIR-604. 
By default the channel is set to 6. The Channel 
can be changed to t the channel setting for an 
existing  wireless  network  or  to  customize  the 
wireless network. If you enable Auto Channel 
Scan, this option will be grayed out.
Select the transmit rate. It is strongly suggested 
to select Best (automatic) for best performance.
WMM (Wi-Fi Multimedia) is QoS for your wireless 
network. Tick this box to improve the quality of 
video and voice applications for your wireless 
clients. This feature is not available in 802.11n 
congurations.
Enable
 Wireless:
Wireless
 Network Name 
(SSID):
Enable Auto 
Channel
 Selection:
Wireless
 Channel:
Transmission 
Rate:
WMM Enable:
Enable Hidden  
Wireless:
Enabling Hidden Mode is another way to secure your network. With this option enabled, no wireless clients will 
be able to see your wireless network when they perform a scan to see what’s available.  In order for your wireless 
devices to connect to your Router, you will need to manually enter the Wireless Network Name on each device. 
Refer to Section 4 - Wireless Security for more information regarding wireless security.
 Security 
Mode:

19D-Link DIR-604 User Manual
Section 3 - Configuration
LAN Setup
This section will allow you to change the internal network settings of the Router and to congure the DHCP settings.
Enter the IP address of the Router. The default 
IP address is 192.168.0.1.
If  you  change  the  IP  address,  once  you  click 
Save Settings, you will need to enter the new 
IP address in your browser to get back into the 
conguration utility.
Enter the subnet mask. The default subnet mask 
is 255.255.255.0.
Enter the default gateway IP address.
Enter the primary DNS server IP address.
Enter the secondary DNS server IP address.
Tick this check box to enable the DHCP server 
on your Router. De-select to disable this function.
Enter the starting and ending IP addresses for 
the DHCP server’s IP assignment.
Note:  If  you  statically  (manually)  assign  IP 
addresses to your computers or devices, make 
sure the IP addresses are outside of this range 
or you may have an IP conict.
Router
 IP Address:
Subnet Mask:
Default Gateway:
Primary DNS Server:
Secondary DNS 
Server:
Enable
 DHCP Server:
DHCP IP Address  
Range:
DHCP Lease Time:
                               The length of time for the IP address lease. Enter the Lease time in minutes.
            Enable IP/
        MAC Binding: Tick to enable IP/MAC binding.

20D-Link DIR-604 User Manual
Section 3 - Configuration
Set the transmit power of the antennas.
Beacons are packets sent by an Access Point to 
synchronize a wireless network. Specify a value. 
100 is the default setting and is recommended. 
This value should remain at its default setting of 
2432. If inconsistent data ow is a problem, only 
a minor modication should be made.
The fragmentation threshold, which is specied 
in  bytes,  determines  whether  packets  will  be 
fragmented. Packets exceeding the 2346 byte 
setting will be fragmented before transmission. 
2346 is the default setting. 
(Delivery  Trafc  Indication  Message)  1  is  the 
default setting. A DTIM is a countdown informing 
clients  of  the  next  window  for  listening  to 
broadcast and multicast messages.
Select  Short Preamble  or  Long  Preamble. 
The preamble denes the length of the CRC block (Cyclic Redundancy Check is a common technique for detecting data 
transmission errors) for communication between the wireless router and the roaming wireless network adapters. Note: High 
network trafc areas should use the Short Preamble type.
Select None, Always, or Auto.
Use the drop-down menu to selec the wireless modes you want to enable on the router. The available options are 802.11n 
only, 802.11 Mixed (g/b), and 802.11 Mixed (n/g/b).
Tick this check box to reduce the guard interval time therefore increasing the data capacity. However, it is less reliable and 
may create higher data loss.
Transmit Power:
Beacon
 Period:
RTS
 Threshold:
Fragmentation:
DTIM
 Interval:
 Preamble
 Type:
CTS Mode:
Wireless
 Mode:
Short Guard 
Interval:
Advanced Wireless Settings

21D-Link DIR-604 User Manual
Section 3 - Configuration
Change Password
Remote Management
Administrator Settings
Enter the login name. The default is admin.
Enter  a  new  password  for  the  Administrator 
Login  Name.  The  administrator  can  make 
changes to the settings.
Retype the new password for the Administrator 
Login Name. 
Login Name:
Password:
Confirm
 Password:
This page will allow you to change the Administrator and User passwords. You can also enable Remote Management.  
There are two accounts that can access the management interface through the Web browser. The accounts are admin 
and user. Admin has read/write access while user has read-only access. User can only view the settings but cannot 
make any changes. Only the admin account has the ability to change both admin and user account passwords.

22D-Link DIR-604 User Manual
Section 3 - Configuration
Time and Date
Select the Time Zone from the drop-down menu.
Tick the check box to enable Daylight Saving 
Time.
Click  this  button  to  set  the  device’s  time  the 
same to local PC. 
Tick  the  check  box  to  enable  the  device  to 
automatically  synchronize  with  a  D-Link NTP 
Server. NTP stands for Network Time Protocol. 
NTP  synchronizes  computer clock  times  in  a 
network  of  computers.  This  will  only  connect 
to a server on the Internet, not a local server.
Select  one  of  the  D-Link  NTP  Servers  from 
the  drop-down  menu.  The  DIR-604  will  then 
synchronize its clock  to be the same time as 
the D-Link Internet 
time server.  Click  the  Update  Now  button  to 
synchronize with the D-Link Internet time server 
immediatley.
To manually input the time, use the drop-down 
menus to enter the values in these elds for the 
Year, Month, Day, Hour, Minute, and Second. 
Time Zone:
Enable
 Daylight
 Saving:
Sync your 
computer’s time 
settings:
Automatically 
synchronize
 with D-Link’s 
Internet time 
server:
NTP 
Server Used:
Set the Time
 and Date 
Manually:
The Time and Date Conguration option allows you to congure, update, and maintain the correct time on the internal 
system clock. From this section you can set the time zone that you are in and set the Time Server. Daylight Saving 
can also be congured to automatically adjust the time when needed.
Click the Save Settings button to save any changes made.

23D-Link DIR-604 User Manual
Section 3 - Configuration
Save and Restore Settings
Use  this  option  to  save  the  current  router 
conguration settings to a le on the hard disk 
of the computer you are using. First, click the 
Save  button.  You  will  then  see  a  le  dialog, 
where you can select a location and le name 
for the settings. 
Use  this  option  to  load  previously  saved 
router  configuration  settings.  First,  use  the 
Browse control to nd a previously save le of 
conguration settings. Then, click the Upload 
Settings  button  to  transfer  those  settings  to 
the Router. 
Click  the  Restore  Device  button  to  restore 
all  conguration  settings  back  to  the  settings 
that were in effect at the time the Router was 
shipped from the factory. Any settings that have 
not been saved will be lost, including any rules 
that you have created. If you want to save the 
current  router  conguration  settings,  use  the 
Save button above. 
Click the Clear button to restore the device back 
to  the  English  interface  version  and  remove 
other languages installed for  the system web 
pages. 
Save Settings
 to Local Hard 
Drive:
Load Settings 
from Local
 Hard Drive:
Restore to
 Factory
 Default
 Settings:
Clear
 Language
 Pack:

24D-Link DIR-604 User Manual
Section 3 - Configuration
Firmware Update
Displays the current rmware version. 
Displays the current rmware date. 
Click the Check Now button, or the “Click here 
to check for an upgrade on our support site.” 
hyperlink at the top of the page, to see what the 
latest rmware for the Router is. 
After you have downloaded the new rmware, 
click the Browse control to locate the rmware 
update  on  your  hard  drive.  Click  Upload  to 
complete the rmware upgrade.
This  function  allows  the  user  to  transfer  the 
language of the GUI from English to their own 
language  by  upgrading  the  language  pack. 
Click the Browse control to locate the desired 
language pack on your hard drive. Click Upload 
to complete the language pack upgrade.
Current
 Firmware 
Version:
Current
 Firmware
 Date:
Check Online 
Now for Latest 
Firmware
 Version:
Firmware
 Upgrade:
Language
 Pack
 Upgrade:
You can upgrade the rmware of the Router here. Please check the D-Link support site for rmware updates at http://
support.dlink.com or simply click the Check Now button located in the Firmware Information section. You can download 
rmware upgrades to your hard drive from the D-Link support site. Make sure the rmware you want to use is on the 
local hard drive of the computer. Click on Browse to locate the rmware le to be used for the update. 

25D-Link DIR-604 User Manual
Section 3 - Configuration
System Check
The Ping Test is used to send Ping packets 
to test if a computer is on the Internet. Enter 
the  IP  Address  that  you  wish  to  Ping,  and 
click Ping.
The  results  of  your  ping  attempts  will  be 
displayed here.
Ping Test:
Ping Result:
The System Check feature allows you to verify the physical connectivity on both the LAN and Internet interface.

26D-Link DIR-604 User Manual
Section 3 - Configuration
Log Settings
The Router keeps a running log of events and activities occurring on the device. You can dene what types of events 
you want to view and the level of the events to view. The Router also has external Syslog Server support, so you can 
send the log les to a computer on your network that is running a Syslog utility.
Click the Save button to save the log le to 
your local hard drive.
Tick this check box to send the Router logs to 
a SysLog Server.
The address of the SysLog server that will be 
used to send the logs. You may also select 
your computer from the drop-down menu (only 
if receiving an IP address from the Router via 
DHCP).
Tick the desired type(s) of logs that should be 
displayed: System, Firewall & Security, and 
Router Status.
Tick  the  desired  level(s)  of  importance: 
Critical, Warning, and Information.
Enter the e-mail address where you want the  
email sent.
Enter a subject description for your e-mail.
This e-mail address will appear as the sender 
when  you  receive  a  log  file  or  firmware 
upgrade notication via e-mail.
Save Log File
 to Local Hard 
Drive:
Enable
 Logging to 
Syslog Server:
Syslog Server
 IP Address:
Log Type:
Log Level:
Email Address:
Email Subject:
Sender Email 
Address:

27D-Link DIR-604 User Manual
Section 3 - Configuration
Click the Save Settings button when you have nished the log settings conguration.
SMTP Server/
IP Address:
User Name:
Password:
Confirm
 Password:
Enter the SMTP server address for sending e-mail. If your SMTP server requires authentication, select this option.
Enter your account user name for sending e-mail.  
Enter the password associated with the account. 
Re-type the password associated with the account and click the Send Mail Now button. 

28D-Link DIR-604 User Manual
Section 3 - Configuration
Device Information
This page displays the current information for the DIR-604. It will display the LAN and Wireless information, in addition 
to the rmware version and date the rmware was last updated.
If your Internet connection is set up for a Dynamic IP 
address then a DHCP Release button and a DHCP 
Renew button will be displayed. Use DHCP Release 
to disconnect from your ISP and use DHCP Renew 
to connect to your ISP. 
If  your  Internet  connection  is  set  up  for  PPPoE, 
PPTP, or L2TP, a Connect button and a Disconnect 
button will be displayed. Use Disconnect to drop the 
Internet connection and use Connect to establish 
the Internet connection.See the following for more 
information.
LAN:
Wireless
 802.11n:
Displays  the  MAC  address  and  the  private 
(local) IP settings for the Router.
Displays the wireless mode, MAC address and 
your wireless settings such as SSID, Channel, 
and Encryption status.

29D-Link DIR-604 User Manual
Section 3 - Configuration
View Log
First Page:
Last Page:
Previous:
Next:
Clear:
Link to Log 
Settings:
Click this button to view the rst page of the 
log le.
Click this  button  to  view the  last  page  of the 
log le.
Click this button to view the previous page of 
the log le.
Click this button to view the next page of the 
log le.
Clears all of the log contents.
The  user  can  click  the  button  to  “  link  to  log 
settings” and save the logs to a local hard drive 
or to a Syslog server.
The Router automatically logs (records) events of possible interest in its internal memory. If there is not enough internal 
memory for all events, logs of older events are deleted but logs of the latest events are retained. The View Log option 
allows you to view the router logs. You can dene what types of events you want to view and the level of the events 
to view on the Log Settings page. The Router also has external Syslog Server support, so you can send the log les 
to a computer on your network that is running a Syslog utility (see the Log Settings page).

30D-Link DIR-604 User Manual
Section 3 - Configuration
Traffic Statistics
The page displays the Trafc Statistics. Here you can view the amount of packets that pass through the DIR-604 on the 
Internet, LAN, and Wireless connections. The trafc counter will reset if the device is rebooted. Alternatively, you can 
click either the Reset button or the Refesh button.

31D-Link DIR-604 User Manual
Section 3 - Configuration
Wireless
The wireless client table displays a list of current connected wireless clients. This table also displays the connection 
time and MAC address of the connected wireless clients.

32D-Link DIR-604 User Manual
Section 3 - Configuration
Configuration
This section will show you how to congure your new D-Link wireless Router using the Web-based conguration utility.
Web-based Configuration Utility for Client Mode
To  access  the  conguration  utility,  open  a  Web-
browser such as Internet Explorer and enter the IP 
address of the router (192.168.0.1).
Type Admin in the User Name eld and then enter 
your password. Leave the password blank by default. 
Click the Login button to log in to the Router.
If you get a Page Cannot be Displayed error, please 
refer to the Troubleshooting section for assistance.

33D-Link DIR-604 User Manual
Section 3 - Configuration
Client Mode Opening Page
Once logged into the Web interface of the Router in Client Mode, the Device Information page will appear. This 
displays the MAC Address, Channel, and Encryption status. To make changes to your wireless network, click Setup 
to access the Wireless page.

34D-Link DIR-604 User Manual
Section 3 - Configuration
Wireless
Use the Wireless page to make changes to your 
wireless conguration.

35D-Link DIR-604 User Manual
Section 3 - Configuration
Configuration
This section will show you how to congure your new D-Link wireless Router using the Web-based conguration utility.
Web-based Configuration Utility for Router Mode
To  access  the  conguration  utility,  open  a  Web-
browser such as Internet Explorer and enter the IP 
address of the router (192.168.0.1).
Type Admin in the User Name eld and then enter 
your password. Leave the password blank by default. 
Click the Login button to log in to the Router.
If you get a Page Cannot be Displayed error, please 
refer to the Troubleshooting section for assistance.

36D-Link DIR-604 User Manual
Section 3 - Configuration
Router Mode Opening Page
Once logged into the Web interface of the Router in Router Mode, the Device Information page will appear. This 
displays the LAN’s MAC Address, IP Address, Subnet Mask, and DHCP Server status. This page also displays additional 
Internet and Wireless 802.11n information. To make changes to your wireless network, click Setup to access the 
Wireless Connection page.

37D-Link DIR-604 User Manual
Section 3 - Configuration
Internet Connection Setup Wizard
Once logged into the Web interface of the Router, the Setup > Internet page will appear. Click the Internet Connection 
Setup Wizard button to quickly congure your Router using the setup wizard.
If you want to enter your settings without running the wizard, click Manual Internet Connection Setup and skip to 
“Manual Internet Conguration” on page 42.

38D-Link DIR-604 User Manual
Section 3 - Configuration
Click Next to continue.
Create  a  new  password  and  then  click  Next  to 
continue.
Select  your  time  zone  and  desired  NTP  server 
from the drop-down menus and then click Next to 
continue.

39D-Link DIR-604 User Manual
Section 3 - Configuration
To have the Setup Wizard automatically detect the 
WAN connection type, select “Yes” and then click 
Next.To  manually  choose  your  WAN  Connection 
Mode, select “No, I want to set by manual” and then 
click Next to continue.
Select the type of Internet connection you use and 
then click Next to continue.
If you selected DHCP Connection (Dynamic IP Address), you 
may need to enter the MAC address of the computer that was 
last connected directly to your modem. If you are currently 
using that computer, click Clone Your PC’s MAC Address 
and then click Next to continue.
The Host Name is optional but may be required by some ISPs. 
The default host name is the device name of the Router and 
may be changed.

40D-Link DIR-604 User Manual
Section 3 - Configuration
If  you  selected  PPTP,  enter  your  PPTP  username  and 
password. Click Next to continue.
If  you  selected  PPPoE,  enter  your  PPPoE  username  and 
password. Click Next to continue.
Select “Static IP” if your ISP assigned you the IP address, 
subnet mask, gateway, and DNS server addresses.
Note: Make sure to remove your PPPoE software from your 
computer. The software is no longer needed and will not work 
through a router.

41D-Link DIR-604 User Manual
Section 3 - Configuration
If  you  selected  L2TP,  enter  your  L2TP  username  and 
password. Click Next to continue.
If you selected Static, enter your network settings supplied 
by your Internet provider. Click Next to continue.
The Setup is now complete. Click the Connect to save your 
settings. Please allow 1-2 minutes to connect. 

42D-Link DIR-604 User Manual
Section 3 - Configuration
If you opt to set up your Internet connection manually, you will be redirected to a WAN page that allows you to select 
your Internet type and enter the correct conguration parameters. 
Manual Internet Configuration (Dynamic IP)
Select Dynamic IP (DHCP) to obtain IP address information 
automatically from your ISP. Select this option if your ISP 
does not give you any IP numbers to use.
The host name is optional but may be required by some 
ISPs. Leave blank if you are not sure.
The default MAC address is set to the Internet port’s physical 
interface MAC address on the broadband Router. It is not 
recommended that you change the default MAC address 
unless required by your ISP.  You can use the Copy Your 
PC’s MAC Address button to replace the Internet port’s 
MAC address with the MAC address of your Ethernet card.
Enter the primary DNS server IP address assigned by your 
ISP. This  address is usually obtained automatically from 
your ISP. Leave at 0.0.0.0 if you did not specically receive 
an address from your ISP.
Enter the secondary DNS server IP address assigned by 
your  ISP.  This address  is  usually  obtained  automatically 
from your ISP. Leave at 0.0.0.0 if you did not specically 
receive an address from your ISP.
Maximum Transmission Unit. You may need to change the 
MTU  for  optimal  performance  with  your  specic  ISP.  The 
default is 1500.
My Internet 
Connection 
is:
Host Name: 
MAC 
Address:
Primary DNS 
Server:
Secondary 
DNS Server: 
MTU:
Click the Save Settings button when you have nished conguring the Internet connection.

43D-Link DIR-604 User Manual
Section 3 - Configuration
Choose PPPoE (Point to Point Protocol over Ethernet) if your ISP uses a PPPoE connection. Your ISP will provide 
you with a username and password. This option is typically used for DSL services. Make sure to remove your PPPoE 
software from your computer. The software is no longer needed and will not work through a router. 
Manual Internet Configuration (PPPoE)
Select PPPoE (Username/Password) to obtain IP address 
information automatically from your ISP. Select this option 
if your ISP does not give you any IP numbers to use.
Select Static IP if your ISP assigned you the IP address, 
subnet mask, gateway, and DNS server addresses. In most 
cases, users will select Dynamic IP (DHCP).
Enter your PPPoE user name.
Enter your PPPoE password.
Retype the PPPoE password entered above.
Enter the ISP service name (optional).
Enter the IP address (Static PPPoE only).
The default MAC address is set to the Internet port’s physical 
interface MAC address on the broadband Router. It is not 
recommended  that  you  change  the  default  MAC  address 
unless required by your ISP.  You can use the Copy Your 
PC’s MAC Address button to replace the Internet port’s MAC 
address with the MAC address of your Ethernet card.
Enter the primary DNS server address (Static PPPoE only).
My Internet 
Connection 
is:
Address 
Mode: 
User Name:
Password:
Confirm 
Password: 
Service 
Name:
IP Address:
MAC 
Address:
Primary DNS 
Server:

44D-Link DIR-604 User Manual
Section 3 - Configuration
Click the Save Settings button when you have nished conguring the Internet connection.
Secondary DNS 
Server:
Maximum Idle 
Time:
MTU:
Connection
 Mode Select:
I need sniper:
Special Dial 
Mode:
Enter the secondary DNS server address (Static PPPoE only).
Enter a maximum idle time during which the Internet connection is maintained during inactivity. To disable this feature, select 
either Always or Manual for the Connection mode select setting below.
Maximum Transmission Unit. You may need to change the MTU for optimal performance with your specic ISP. The default 
is 1492.
Select either Always, Manual, or Connection On-Demand. Click the Add New button to create a new connection.
Tick the check box to indicate you want to use the sniper feature.
Select normal dial mode (default) or special dial mode 1, special mode 2, special mode 3, special mode 4, special 
mode 5, or special mode 6.

45D-Link DIR-604 User Manual
Section 3 - Configuration
Choose PPTP (Point-to-Point-Tunneling Protocol ) if your ISP uses a PPTP connection. Your ISP will provide you with 
a username and password. This option is typically used for DSL services. 
Manual Internet Configuration (PPTP)
Select PPTP (Username/Password) to obtain IP Address 
information automatically from your ISP. 
Select Static IP if your ISP assigned you the IP address, 
subnet mask, gateway, and DNS server addresses. In most 
cases, users will select Dynamic IP (DHCP).
Enter the IP address (Static PPTP only).
Enter the subnet mask (Static PPTP only).
Enter the gateway IP address provided by your ISP.
Enter the primary DNS server address (Static PPTP only).
The default MAC address is set to the Internet port’s physical 
interface MAC address on the broadband Router. It is not 
recommended that you change the default MAC address 
unless required by your ISP.  You can use the Copy Your 
PC’s MAC Address button to replace the Internet port’s MAC 
address with the MAC address of your Ethernet card.
Enter the server IP address provided by your ISP (optional).
Enter your PPTP user name.
My Internet 
Connection is:
Address Mode: 
PPTP IP 
Address:
PPTP Subnet 
Mask:
PPTP Gateway 
IP Address:
Primary DNS 
Server:
MAC Address:
PPTP Server IP 
Address:
User Name:

46D-Link DIR-604 User Manual
Section 3 - Configuration
Click the Save Settings button when you have nished conguring the Internet connection.
Password:
Confirm
 Password: 
Maximum Idle 
Time:
MTU:
Connection
 Mode Select:
Enter your PPTP password.
Retype the PPTP password entered above.
Enter a maximum idle time during which the Internet connection is maintained during inactivity. To disable this feature, select 
either Always or Manual for the Connection mode select setting below.
Maximum Transmission Unit. You may need to change the MTU for optimal performance with your specic ISP. The default 
is 1400.
Select either Always, Manual, or Connection On-Demand. Click the Add New button to create a new connection.

47D-Link DIR-604 User Manual
Section 3 - Configuration
Choose L2TP (Layer 2 Tunneling Protocol ) if your ISP uses a L2TP connection. Your ISP will provide you with a 
username and password. This option is typically used for DSL services. 
Manual Internet Configuration (L2TP)
Select L2TP (Username/Password) to obtain IP Address 
information automatically from your ISP. 
Select Static IP if your ISP assigned you the IP address, 
subnet mask, gateway, and DNS server addresses. In most 
cases, users will select Dynamic IP (DHCP).
Enter the IP address (Static L2TP only).
Enter the subnet mask (Static L2TP only).
Enter the gateway IP address provided by your ISP.
Enter the primary DNS server Address (Static L2TP only).
The default MAC address is set to the Internet port’s physical 
interface MAC address on the broadband Router. It is not 
recommended that you change the default MAC address 
unless required by your ISP.  You can use the Copy Your 
PC’s MAC Address button to replace the Internet port’s MAC 
address with the MAC address of your Ethernet card.
Enter the server IP address provided by your ISP (optional).
Enter your L2TP user name.
My Internet 
Connection is:
Address Mode: 
L2TP IP 
Address:
L2TP Subnet 
Mask:
L2TP Gateway 
IP Address:
Primary DNS 
Server:
MAC Address:
L2TP Server IP 
Address:
User Name:

48D-Link DIR-604 User Manual
Section 3 - Configuration
Click the Save Settings button when you have nished conguring the Internet connection.
Password:
Confirm
 Password: 
Maximum Idle 
Time:
MTU:
Connection
 Mode Select:
Enter your L2TP password.
Retype the L2TP password entered above.
Enter a maximum idle time during which the Internet connection is maintained during inactivity. To disable this feature, select 
either Always or Manual for the Connection mode select setting below.
Maximum Transmission Unit. You may need to change the MTU for optimal performance with your specic ISP. The default 
is 1400.
Select either Always, Manual, or Connection On-Demand. Click the Add New button to create a new connection.

49D-Link DIR-604 User Manual
Section 3 - Configuration
Select Static IP Address if all the Internet port’s IP information is provided to you by your ISP. You will need to enter in 
the IP address, subnet mask, gateway address, and DNS address(es) provided to you by your ISP. Each IP address 
entered in the elds must be in the appropriate IP form, which are four octets separated by a dot (x.x.x.x). The Router 
will not accept the IP address if it is not in this format. 
Manual Internet Configuration (Static IP)
Select Static IP if you want to manually enter  information 
provided by your ISP. 
Enter the IP address assigned by your ISP.
Enter the subnet mask assigned by your ISP.
Enter the gateway IP address provided by your ISP.
The default MAC address is set to the Internet port’s physical 
interface MAC address on the broadband Router. It is not 
recommended that you change the default MAC address 
unless required by your ISP.  You can use the Copy Your 
PC’s MAC Address button to replace the Internet port’s 
MAC address with the MAC address of your Ethernet card.
Enter the primary DNS server address provided by your ISP.
Enter the secondary DNS server address provided by your 
ISP.
Maximum Transmission Unit. You may need to change the 
MTU  for  optimal  performance  with  your  specic  ISP.  The 
default is 1500.
My Internet 
Connection is:
IP Address:
Subnet Mask:
Default 
Gateway:
MAC Address:
Primary DNS 
Server:
Secondary 
DNS Server:
MTU:

50D-Link DIR-604 User Manual
Section 3 - Configuration
Wireless Connections
If you want to congure the wireless settings on your 
Router using the wizard, click Wireless Connection 
Setup  Wizard  and  refer  to  “Wireless  Connection 
Setup Wizard” on page 81.
If you want to manually congure the wireless settings 
on your Router, click Manual Wireless Connection 
Setup and refer to the next page.

51D-Link DIR-604 User Manual
Section 3 - Configuration
Manual Wireless Network Setup
Tick  the  check  box  to  enable  the  wireless 
function. If you do not want to use wireless, de-
select the check box to disable all the wireless 
functions.  
Service Set Identier (SSID) is the name of your 
wireless network. Create a name using up to 32 
characters. The SSID is case-sensitive.
The Auto Channel Scan setting can be selected 
to allow the DIR-604 to choose the channel with 
the least amount of interference.
Indicates the channel setting for the DIR-604. 
By default the channel is set to 6. The Channel 
can be changed to t the channel setting for an 
existing wireless network  or  to  customize  the 
wireless network. If you enable Auto Channel 
Scan, this option will be grayed out.
Select the transmit rate. It is strongly suggested 
to select Best (automatic) for best performance.
WMM  (Wi-Fi  Multimedia)  is  QoS  for  your 
wireless network. Check this box to improve the 
quality of video and voice applications for your 
wireless clients. This feature is not available in 
802.11n congurations.
Enable
 Wireless:
Wireless
 Network Name 
(SSID):
Enable Auto 
Channel
 Selection:
Wireless
 Channel:
Transmission 
Rate:
WMM Enable:
Enable Hidden  
Wireless:
Enabling Hidden Mode is another way to secure your network. With this option enabled, no wireless clients will 
be able to see your wireless network when they perform a scan to see what’s available.  In order for your wireless 
devices to connect to your Router, you will need to manually enter the Wireless Network Name on each device. 
Refer to Section 4 - Wireless Security for more information regarding wireless security.
 Security 
Mode:

52D-Link DIR-604 User Manual
Section 3 - Configuration
LAN Setup
This section will allow you to change the internal network settings of the Router and to congure the DHCP settings.
Enter the IP address of the Router. The default IP address is 192.168.0.1.
If you change the IP address, once you click Save Settings, you will need to 
enter the new IP address in your browser to get back into the conguration 
utility.
Enter the subnet mask. The default subnet mask is 255.255.255.0.
Enter the primary DNS server IP address.
Enter the secondary DNS server IP address.
Tick this check box to enable the DHCP server on your Router. De-select 
to disable this function.
Enter  the  starting  and  ending  IP  addresses  for  the  DHCP  server’s  IP 
assignment.
Note: If you statically (manually) assign IP addresses to your computers or 
devices, make sure the IP addresses are outside of this range or you may 
have an IP conict.
Router
 IP Address:
Subnet Mask:
Local Domain
 Name:
Enable DNS Relay:
Enable
 DHCP Server:
DHCP IP Address  
Range:
DHCP Lease Time:
DHCP Client List:
Enable IP/MAC 
Binding:             
The length of time for the IP address lease. Enter the Lease time in 
minutes.
Displays a list of the DHCP reservations that have been congured on the 
Router. See the DHCP Reservation section on the next page for more info.
Tick to enable IP/MAC binding.

53D-Link DIR-604 User Manual
Section 3 - Configuration
DHCP Reservation
If you want a computer or device to always have the same 
IP address assigned, you can create a DHCP reservation. 
The Router will assign the IP address only to that computer 
or device. 
Congure the parameters, as described below, to create a 
new DHCP Reservation.
Note: This IP address must be within the DHCP IP address 
range.
Enter the computer name or select a computer name 
from the drop-down menu on the right-hand side and 
click <<.
Enter the IP address you want to assign to the computer 
or device. This IP Address must be within the DHCP IP 
Address Range.
Enter the MAC address of the computer or device.
Computer
 Name:
IP Address:
MAC Address:
When you have nished conguring the above settings, tick 
the check boxes next to the DHCP Reservation entries you 
want to add to the DHCP Reservations List and click the 
Save Settings button at the top or bottom of the window to 
save your entries and activate your reservations. 

54D-Link DIR-604 User Manual
Section 3 - Configuration
Port Forwarding is a feature that allows you to open a single port or a range of ports and redirect the data received 
through those ports to a single PC on your network. When you are nished on this page, go to the Schedule page 
(Maintenance > Schedule) and create a schedule for when the port forwarding rule will be enabled.
Advanced Port Forwarding Rules
Enter a name for the rule or select an application 
from the drop-down menu. Select an application 
and click << to populate the elds.
Enter the IP address of the computer on your 
local network that you want to allow the incoming 
service to. If your computer is receiving an IP 
address automatically from the Router (DHCP), 
you  computer  will  be  listed  in  the  “Computer 
Name” drop-down menu. Select your computer 
and click <<. 
Enter the range of ports that you want to open 
next to the Private Port and Public Port elds. 
The  private  and  public  ports  are  usually  the 
same.  The  private  ports  are  the  ports  being 
used by the application on the computer within 
your local network, and the public ports are the 
ports seen from the Internet side.
Use  the  drop-down  menu  to  select  whether 
TCP, UDP, or Any type of trafc is used for the 
port forwarding rule.
Name:
IP Address:
Public Port/
Private Port:
Traffic Type:

55D-Link DIR-604 User Manual
Section 3 - Configuration
Enter  a  name  for  the  rule.  You  may  select  a  
pre-dened  application  from  the  drop-down 
menu and click <<.
This is the port used to trigger the application. It 
can be either a single port or a range of ports.
Select  the  protocol  of  the  trigger  port  (TCP, 
UDP, or Any).
This is the port number on the Internet side that 
will be used to access the application. You may 
dene  a  single  port  or  a  range  of  ports.  You 
can use a comma to add multiple ports or port 
ranges.
Select  the  protocol  of  the  rewall  port  (TCP, 
UDP, or Any).
Name:
Trigger:
Traffic Type:
Firewall:
Traffic Type:
Application Rules
Some applications require multiple connections, such as Internet gaming, video conferencing, Internet telephony and 
others. These applications have difculties working through NAT (Network Address Translation). Special Applications 
makes some of these applications work with the DIR-604. If you need to run applications that require multiple connections, 
specify the port normally associated with an application in the Trigger port eld, select the protocol type as TCP, UDP, 
or Any, and then enter the rewall (public) ports associated with the trigger port to open them for inbound trafc.
The DIR-604 provides some predened applications in the table on the bottom of the Web page. Select the application 
you want to use and enable it. When you are nished on this page, go to the Schedule page (Maintenance > Schedule) 
and create a schedule for when the application rule will be enabled.  

56D-Link DIR-604 User Manual
Section 3 - Configuration
MAC Filtering
Select  Turn  MAC  Filtering  Off,  Turn  MAC 
Filtering ON and ALLOW computers listed to 
access the network,  or Turn MAC Filtering 
ON and DENY computers listed to acces the 
network from the drop-down menu. 
Enter the MAC address you would like to lter.
To nd the MAC address on a computer, please 
refer to the Networking Basics section in this 
manual. 
Select a DHCP client from the drop-down menu 
and click << to copy the MAC Address from the 
DHCP client. 
Select a schedule for when the Network Filter 
will be enabled. The user can click the Add New 
button to bring up the Schedule page. This is 
used to congure a new schedule.
Configure
 MAC
 Filtering:
MAC Address:
DHCP Client
 List:
Schedule:
Use MAC (Media Access Control) Filters to allow or deny LAN (Local Area Network) computers by their MAC addresses 
from accessing the network. You can either manually add a MAC address or select the MAC address from the list of 
clients that are currently connected to the Router.

57D-Link DIR-604 User Manual
Section 3 - Configuration
Select  Turn  Parental  Control  OFF,  Turn 
Parental Control  ON and Deny  computers 
access to only these sites, or Turn Parental 
Control ON and Allow computers access to 
only these sites.
Enter the URLs that you want to allow or deny.
Use the drop-down menu to select the schedule 
for the network lter rule. Click the Add New 
button to bring up the Schedule page. This is 
used to congure a new schedule.
Configure
Parental
 Control Below:
Website URL:
Schedule:
Parental Control Rules
Parental Control Rules are used to allow you to set up a list of allowed Websites that can be used by multiple users 
through the network. To use this feature, select to allow or deny computer access to the specied sites, enter the 
domain or Website, and then click Add New and congure a schedule on the Schedule page. Finally, tick the desired 
corresponding parental control rule check box and then click Save Settings. 

58D-Link DIR-604 User Manual
Section 3 - Configuration
Tick  the  Enable  Trafc  Control  check  box  to 
enable the trafc control feature.
Tick the Automatic Distribute Bandwidth check 
box  to  automatically  equally  share  bandwith 
among LAN and wireless clients.
Enter the desired bandwith in kbps.
Manually  congure  beginning  and  ending  IP 
address  ranges  for  trafc  control  rules.  To 
activate, tick the corresponding check box for 
each desired trafc control rule.
Select Guaranteed minimum bandwidth or 
Restricted maximum bandwidth.
Enter the bandwith for the specic trafc control 
rule.
Use the drop-down menu to select the schedule 
for  the  traffic  control  rule.  Click  the  New 
Scheduler  button  to  bring  up  the  Schedule 
page. This is used to congure a new schedule.
Enable Traffic
 Control:
Automatic 
Distribute 
Bandwidth:
Key in
 bandwidth 
manually:
IP Range:
Mode:
Bandwidth
 (kbps):
Schedule:
Traffic Control
Trafc Control is used to equally distribute download bandwidth to LAN/wireless clients. This can be done automatically 
or manually. To use this feature, enable trafc control and then choose to automatically or manually distribute bandwith.  
Next, click New Scheduler and congure a schedule on the Schedule page. Finally, if you have chosen the manual 
option, tick the desired corresponding trafc control rule check box and then click Save Settings. 

59D-Link DIR-604 User Manual
Section 3 - Configuration
Tick to enable the Router’s built-in anti-spoong 
feature. 
SPI (Stateful Packet Inspection, also known as 
dynamic packet ltering) helps to prevent cyber 
attacks by tracking more state per session. It 
validates  that  the  trafc  passing  through  the 
session conforms to the protocol.
Tick this check box to enable DMZ. 
Specify the IP address of the computer on the 
LAN that you want to have unrestricted Internet 
communication in this eld. Use the drop-down 
menu  to  specify  a  host  that  currently  has  a 
DHCP lease from the DIR-604. If this computer 
has obtained its IP address automatically using 
DHCP, be sure to make a static reservation on 
the LAN Setup page (Setup > LAN Setup) in 
the DHCP Reservation section so that the IP 
address of the DMZ machine does not change.
Tick to enable application level gateway (ALG) 
conguration of RTSP.
Use this section  to  create  rules  that deny or 
allow trafc from passing through the device. 
See the following page for information on how to create rewall rules.
Enable
 Anti-Spoof 
checking:
Enable SPI:
Enable DMZ:
DMZ
 IP Address:
RSTP:
Firewall Rules:
Firewall & DMZ
A rewall protects your network from the outside world. The D-Link DIR-604 offers a rewall type functionality. The SPI 
feature helps prevent cyber attacks. Sometimes you may want a computer exposed to the outside world for certain 
types of applications. If you choose to expose a computer, you can enable DMZ (DMZ is short for Demilitarized Zone). 
This option will completely expose the chosen computer to the outside world.

60D-Link DIR-604 User Manual
Section 3 - Configuration
Firewall Rules
Enter a name for the rewall rule.
Use the drop-down menu to specify if the Router should 
Allow or Deny trafc matching the rewall rule. 
Use the drop-down menus to select the Source and Dest 
(ination) interfaces for the rewall rule. You also may opt 
to  choose either LAN or WAN for each pair of interfaces.
Use these elds next to each Interface drop-down menu to 
specify the IP address ranges for the Source/Destination 
interfaces.
The rst host in the IP address range should be entered 
in the top eld and the last host in the IP address range 
should be entered in the eld beneath for both the Source/
Destination interfaces.
Use the drop-down menu to select the protocol that will be 
used for the rewall rule (TCP, UDP, ICMP, or All).
Enter the range of ports that the rewall rule will apply to.
The rst port in the port range should be entered in the top 
eld and the last host in the port range should be entered 
in the eld beneath.
Use  the  drop-down  menu  to  select  the  schedule  for  the 
rewall  rule.  Click  the  Add  New  button  to  bring  up  the 
Schedule page to congure the new schedule.
Name:
Action:
Interface:
IP Address:
Protocol:
Port Range:
Schedule:
To  create  a  rewall  rule,  congure  the  parameters 
described below:

61D-Link DIR-604 User Manual
Section 3 - Configuration
Set the transmit power of the antennas.
Beacons are packets sent by an Access Point to 
synchronize a wireless network. Specify a value. 
100 is the default setting and is recommended. 
This value should remain at its default setting of 
2432. If inconsistent data ow is a problem, only 
a minor modication should be made.
The fragmentation threshold, which is specied 
in  bytes,  determines  whether  packets  will  be 
fragmented. Packets exceeding the 2346 byte 
setting will be fragmented before transmission. 
2346 is the default setting. 
(Delivery  Trafc  Indication  Message)  1  is  the 
default setting. A DTIM is a countdown informing 
clients  of  the  next  window  for  listening  to 
broadcast and multicast messages.
Select Short or Long Preamble. The preamble denes the length of the CRC block (Cyclic Redundancy Check is a common 
technique for detecting data transmission errors) for communication between the wireless router and the roaming wireless 
network adapters. Note: High network trafc areas should use the Short Preamble type.
Select None to disable this feature. Select Always to force the Router to require each wireless device on the network to 
perform an RTS/CTS handshake before they are allowed to transmit data. Select Auto to allow the Router to decide when 
RTS/CTS handshakes are necessary
Use the drop-down menu to select the wireless modes you want to enable on the Router. The available options are 802.11n 
only, 802.11 Mixed (g/b), and 802.11 Mixed (n/g/b).
Use the drop-down menu to select 20MHz or 20/40MHz (Auto).
Transmit
 Power:
Beacon
 Period:
RTS
 Threshold:
Fragmentation:
DTIM
 Interval:
 Preamble
 Type:
CTS Mode:
Wireless
Mode:
Bandwidth:
Advanced Wireless Settings

62D-Link DIR-604 User Manual
Section 3 - Configuration
Click the Save Settings button when you have nished the advanced wireless conguration.
20/40Mhz
 Coexist:
Short Guard
 Interval:
Select  to  enable  or  disable  20MHz  and  40MHz  co-existing  in  the  same  wireless  network.  This  is  useful  when  20MHz 
and 40MHz devices exist in the same wireless coverage area. Enable this feature to properly allocate channels without 
interference in such a scenario.  
Tick this check box to reduce the guard interval time therefore increasing the data capacity. However, this is less reliable 
and may create higher data loss.

63D-Link DIR-604 User Manual
Section 3 - Configuration
To use the Universal Plug and Play (UPnP™) 
feature,  tick  the  Enable  UPNP  box.  UPNP 
provides  compatibility  with  networking 
equipment, software, and peripherals.
De-selecting this check box will not allow the 
DIR-604 to respond to pings. Blocking the Ping 
may provide some extra security from hackers. 
Tick the check box to allow the Internet port 
to be “pinged”.
You  may  set  the  port  speed  of  the  Internet 
port  to  10Mbps,  100Mbps,  or  10/100Mbps 
Auto. Some older cable or DSL modems may 
require you to set the port speed to 10Mbps.
Tick  the  Enable  Multicast  Streams  check 
box to allow multicast trafc to pass through 
the Router from the Internet.
Tick the Wireless Enhance Mode check box 
to enable the Router to forward all multicast 
streams  from  the  Internet  to  the  wireless 
station using a unicast stream. This feature 
helps  improve  the  quality  of  multimedia 
applications for wireless users.
Enable UPnP:
Enable WAN
 Ping Respond:
WAN
 Port Speed:
Enable
Multicast
Streams:
Wireless
 Enhance
 Mode:
Advanced Network Settings

64D-Link DIR-604 User Manual
Section 3 - Configuration
Routing
UPnP
Internet Ping Block
Internet Port Speed
Multicast Streams
Select the interface which the IP packet must 
use to transit out of the Router when this route 
is used. Each route has a check box next to 
it. Tick the check box of the route you wish to 
enable. 
Enter the IP address of the host or network 
you wish to access.
This eld identies the portion of the destination 
IP address in use. 
The gateway is the IP address of the router, if 
any, used to reach the specied destination. 
Interface:
Destination:
Subnet Mask:
Gateway:
The routing feature allows users to dene xed routes to dened destinations.

65D-Link DIR-604 User Manual
Section 3 - Configuration
Change Password
Remote Management
Enter the login name. The default is admin.
Enter  a  new  password  for  the  Administrator 
Login  Name.  The  administrator  can  make 
changes to the settings.
Retype the new password for the Administrator 
Login Name. 
Tick  this  check  box  to  enable  graphical 
authentication. The device supports this function 
to prevent phishing.
Remote management allows the DIR-604 to be 
congured from the Internet by a Web browser. 
A  username  and  password  is  still  required  to 
access  the  Web  Management  interface.  In 
general,  only  a  member  of  your  network  can 
browse  the  built-in  Web  pages  to  perform 
Administrator tasks. This feature enables you to perform Administrator tasks from the remote (Internet) host.
Enter the IP address of the computer on the Internet that you want to have access to the Router. If left blank, any computer 
on the Internet can access the Router. 
The port number used to access the DIR-604. Example: http://x.x.x.x:8080 whereas x.x.x.x is the Internet  IP address of the 
DIR-604 and 8080 is the port used for the Web Management interface.
Login Name:
Password:
Confirm
 Password:
Enable
 Graphical 
Authentication:
Enable
 Remote 
Management:
IP Allowed to 
Access:
Port:
Administrator Settings
This page will allow you to change the Administrator and User passwords. You can also enable Remote Management.  
There are two accounts that can access the management interface through the Web browser. The accounts are admin 
and user. Admin has read/write access while user has read-only access. User can only view the settings but cannot 
make any changes. Only the admin account has the ability to change both admin and user account passwords.

66D-Link DIR-604 User Manual
Section 3 - Configuration
Time and Date
Select the Time Zone from the drop-down menu.
Tick the check box to enable Daylight Saving 
Time.
Click  this  button  to  set  the  device’s  time  the 
same to local PC. 
Check  the  box  to  enable  the  device  to 
automatically  synchronize  with  a  D-Link NTP 
Server. NTP stands for Network Time Protocol. 
NTP  synchronizes  computer clock  times  in  a 
network  of  computers.  This  will  only  connect 
to a server on the Internet, not a local server.
Select  one  of  the  D-Link  NTP  Servers  from 
the  drop-down  menu.  The  DIR-604  will  then 
synchronize its clock  to be the same time as 
the D-Link Internet 
time server.  Click  the  Update  Now  button  to 
synchronize with the D-Link Internet time server 
immediatley.
To manually input the time, use the drop-down 
menus to enter the values in these elds for the 
Year, Month, Day, Hour, Minute, and Second. 
Time Zone:
Enable
 Daylight
 Saving:
Sync your 
computer’s time 
settings:
Automatically 
synchronize
 with D-Link’s 
Internet time 
server:
NTP 
Server Used:
Set the Time
 and Date 
Manually:
The Time and Date Conguration option allows you to congure, update, and maintain the correct time on the internal 
system clock. From this section you can set the time zone that you are in and set the Time Server. Daylight Saving 
can also be congured to automatically adjust the time when needed.
Click the Save Settings button to save any changes made.

67D-Link DIR-604 User Manual
Section 3 - Configuration
Use  this  option  to  save  the  current  router 
conguration settings to a le on the hard disk 
of the computer you are using. First, click the 
Save  button.  You  will  then  see  a  le  dialog, 
where you can select a location and le name 
for the settings. 
Use  this  option  to  load  previously  saved 
router  configuration  settings.  First,  use  the 
Browse control to nd a previously save le of 
conguration settings. Then, click the Upload 
Settings  button  to  transfer  those  settings  to 
the Router. 
Click  the  Restore  Device  button  to  restore 
all  conguration  settings  back  to  the  settings 
that were in effect at the time the Router was 
shipped from the factory. Any settings that have 
not been saved will be lost, including any rules 
that you have created. If you want to save the 
current  router  conguration  settings,  use  the 
Save button above. 
Click the Clear button to restore the device back 
to  the  English  interface  version  and  remove 
other languages installed for  the system web 
pages. 
Save Settings
 to Local Hard 
Drive:
Load Settings 
from Local
 Hard Drive:
Restore to
 Factory
 Default
 Settings:
Clear
 Language
 Pack:
Save and Restore Settings

68D-Link DIR-604 User Manual
Section 3 - Configuration
Displays the current rmware version. 
Displays the current rmware date. 
Click the Check Now button, or the “Click here 
to check for an upgrade on our support site.” 
hyperlink at the top of the page, to see what the 
latest rmware for the Router is. 
After you have downloaded the new rmware, 
click the Browse control to locate the rmware 
update  on  your  hard  drive.  Click  Upload  to 
complete the rmware upgrade.
This  function  allows  the  user  to  transfer  the 
language of the GUI from English to their own 
language  by  upgrading  the  language  pack. 
Click the Browse control to locate the desired 
language pack on your hard drive. Click Upload 
to complete the language pack upgrade.
Current
 Firmware 
Version:
Current
 Firmware
 Date:
Check Online 
Now for Latest 
Firmware
 Version:
Firmware
 Upgrade:
Language
 Pack
 Upgrade:
Firmware Update
You can upgrade the rmware of the Router here. Please check the D-Link support site for rmware updates at http://
support.dlink.com or simply click the Check Now button located in the Firmware Information section. You can download 
rmware upgrades to your hard drive from the D-Link support site. Make sure the rmware you want to use is on the 
local hard drive of the computer. Click on Browse to locate the rmware le to be used for the update. 

69D-Link DIR-604 User Manual
Section 3 - Configuration
Dynamic Domain Name System is a method of 
keeping a domain name linked to a changing 
IP Address. Check the box to enable DDNS.
Choose  your  DDNS  provider  from  the  drop-
down menu.
Enter the Host Name that you registered with 
your DDNS service provider.
Enter the User Name for your DDNS account.
Enter the Password for your DDNS account.
This is to test if the DDNS account is valid for 
use.
Enable DDNS:
Server Address:
Host Name:
Username:
Password:
DDNS Account 
Testing:
Dynamic DNS
The DDNS feature allows you to host a server (Web, FTP, Game Server, etc…) using a domain name that you have 
purchased  (www.whateveryournameis.com)  with  your  dynamically  assigned  IP  address.  Most  broadband  Internet 
Service Providers assign dynamic (changing) IP addresses. Using a DDNS service provider, your friends can enter in 
your domain name to connect to your server no matter what your IP address is.

70D-Link DIR-604 User Manual
Section 3 - Configuration
The Ping Test is used to send Ping packets 
to test if a computer is on the Internet. Enter 
the  IP  Address  that  you  wish  to  Ping,  and 
click Ping.
The  results  of  your  ping  attempts  will  be 
displayed here.
Ping Test:
Ping Result:
The System Check feature allows you to verify the physical connectivity on both the LAN and Internet interface.
System Check

71D-Link DIR-604 User Manual
Section 3 - Configuration
Enter a name for your new schedule.
Select a day, a range of days, or All Week to 
include every day.
Check All Day - 24 hrs or use the Start Time 
and End Time elds to specify the start and 
end time for your schedule.
The list of schedules will be listed here. Click 
the Edit icon  to make changes or click the 
Delete icon  to remove the schedule.
Name:
Day(s):
Time:
Schedule Rules 
List:
Schedule
The Schedule page allows you to manage schedule rules for various rewall and parental control features.

72D-Link DIR-604 User Manual
Section 3 - Configuration
Log Settings
The Router keeps a running log of events and activities occurring on the device. You can dene what types of events 
you want to view and the level of the events to view. The Router also has external Syslog Server support, so you can 
send the log les to a computer on your network that is running a Syslog utility.
Click the Save button to save the log le to 
your local hard drive.
Tick this check box to send the Router logs to 
a SysLog Server.
The address of the SysLog server that will be 
used to send the logs. You may also select 
your computer from the drop-down menu (only 
if receiving an IP address from the Router via 
DHCP).
Tick the desired type(s) of logs that should be 
displayed: System, Firewall & Security, and 
Router Status.
Tick  the  desired  level(s)  of  importance: 
Critical, Warning, and Information.
Enter the e-mail address where you want the  
email sent.
Enter a subject description for your e-mail.
This e-mail address will appear as the sender 
when  you  receive  a  log  file  or  firmware 
upgrade notication via e-mail.
Save Log File
 to Local Hard 
Drive:
Enable
 Logging to 
Syslog Server:
Syslog Server
 IP Address:
Log Type:
Log Level:
Email Address:
Email Subject:
Sender Email 
Address:

73D-Link DIR-604 User Manual
Section 3 - Configuration
Click the Save Settings button when you have nished the log settings conguration.
SMTP Server/
IP Address:
User Name:
Password:
Confirm
 Password:
Enter the SMTP server address for sending e-mail. If your SMTP server requires authentication, select this option.
Enter your account user name for sending e-mail.  
Enter the password associated with the account. 
Re-type the password associated with the account and click the Send Mail Now button. 

74D-Link DIR-604 User Manual
Section 3 - Configuration
This  page  displays  the  current  information  for  the  DIR-604.  It  will  display  the  LAN,  Internet  (WAN),  and  Wireless 
information, in addition to the rmware version and date the rmware was last updated.
If your Internet connection is set up for a Dynamic IP 
address then a DHCP Release button and a DHCP 
Renew button will be displayed. Use DHCP Release 
to disconnect from your ISP and use DHCP Renew 
to connect to your ISP. 
If your Internet connection is set up for PPPoE, PPTP, 
or L2TP, a Connect button and a Disconnect button 
will be displayed. Use Disconnect to drop the Internet 
connection and use Connect to establish the Internet 
connection.
See the following for more information.
Device Information
LAN:
Internet:
Wireless
 802.11n:
Displays  the  MAC  address  and  the  private 
(local) IP settings for the Router.
Displays  the  MAC  address  and  the  public  IP 
settings for the Router.
Displays the wireless mode, MAC address and 
your wireless settings such as SSID, Channel, 
and Encryption status.

75D-Link DIR-604 User Manual
Section 3 - Configuration
View Log
First Page:
Last Page:
Previous:
Next:
Clear:
Link to Log 
Settings:
Click this button to view the rst page of the 
log le.
Click this  button  to  view the  last  page  of the 
log le.
Click this button to view the previous page of 
the log le.
Click this button to view the next page of the 
log le.
Clears all of the log contents.
The  user  can  click  the  button  to  “  link  to  log 
settings” and save the logs to a local hard drive 
or to a Syslog server.
The Router automatically logs (records) events of possible interest in its internal memory. If there is not enough internal 
memory for all events, logs of older events are deleted but logs of the latest events are retained. The View Log option 
allows you to view the router logs. You can dene what types of events you want to view and the level of the events 
to view on the Log Settings page. The Router also has external Syslog Server support, so you can send the log les 
to a computer on your network that is running a Syslog utility (see the Log Settings page).

76D-Link DIR-604 User Manual
Section 3 - Configuration
Traffic Statistics
The page displays the Trafc Statistics. Here you can view the amount of packets that pass through the DIR-604 on the 
Internet, LAN, and Wireless connections. The trafc counter will reset if the device is rebooted. Alternatively, you can 
click either the Reset button or the Refesh button.

77D-Link DIR-604 User Manual
Section 3 - Configuration
Active Sessions
The Active Sessions page displays full details of active Internet sessions through your Router. An Internet session is a 
conversation between a program or application on a LAN-side computer and a program or application on a WAN-side 
computer. 
NAPT Session:
NAPT (Active) 
Session:
Displays information about the NAPT sessions 
on  the  Router,  including  the  number  of  TCP 
sessions,  the  number  of  UDP  sessions,  and 
the combined number of TCP and UDP NAPT 
sessions.
Displays the IP address of the local application 
and  the  TCP/UDP  packets  being  sent  by 
the  source  IP address  for each  NAPT  active 
Session.

78D-Link DIR-604 User Manual
Section 3 - Configuration
The wireless client table displays a list of current connected wireless clients. This table also displays the connection 
time and MAC address of the connected wireless clients.
Wireless

79D-Link DIR-604 User Manual
Section 3 - Configuration
Help

80D-Link DIR-604 User Manual
Section 4 - Security
Wireless Security
This section will show you the different levels of security you can use to protect your data from intruders. The DIR-604 
offers the following types of security:
• WPA2 (Wi-Fi Protected Access 2)     • WPA2-PSK(Pre-Shared Key)
• WPA (Wi-Fi Protected Access)      • WPA-PSK (Pre-Shared Key)
What is WPA?
WPA, or Wi-Fi Protected Access, is a Wi-Fi standard that was designed to improve the security features of WEP (Wired 
Equivalent Privacy).  
The 2 major improvements over WEP: 
• Improved data encryption through the Temporal Key Integrity Protocol (TKIP). TKIP scrambles the keys 
using a hashing algorithm and, by adding an integrity-checking feature, ensures that the keys haven’t 
been tampered with. WPA2 is based on 802.11i and uses Advanced Encryption Standard (AES) instead 
of TKIP.
• User authentication, which is generally missing in WEP, through the extensible authentication protocol 
(EAP). WEP  regulates  access to a wireless  network  based on a computer’s  hardware-specic  MAC 
address, which is relatively simple to be sniffed out and stolen. EAP is built on a more secure public-key 
encryption system to ensure that only authorized network users can access the network.
WPA-PSK/WPA2-PSK uses a passphrase or key to authenticate your wireless connection. The key is an alpha-numeric 
password between 8 and 63 characters long. The password can include symbols (!?*&_) and spaces. This key must 
be the exact same key entered on your wireless router or access point.
WPA/WPA2 incorporates user authentication through the Extensible Authentication Protocol (EAP). EAP is built on a 
more secure public key encryption system to ensure that only authorized network users can access the network.

81D-Link DIR-604 User Manual
Section 4 - Security
Wireless Connection Setup Wizard
To run the security wizard, browse to the Setup page and then click the Wireless Connection Setup Wizard button. 

82D-Link DIR-604 User Manual
Section 4 - Security
Click  Next  to  allow  the  setup  wizard  to  guide  you  through  a 
step-by-step process to set up your wireless network and make 
it secure. 
Enter the SSID (Service Set Identier). The SSID is the name of 
your wireless network. Create a name using up to 32 characters. 
The SSID is case-sensitive.
If you would like the Router to automatically assign a network 
key to your network, click the Automatically assign a network 
key (Recommended) radio button.  
Alternativley, click the Manually assign a network key radio 
button to create your own network key.
Click Next to continue. 
The  following  window  appears  if  you  selected  the  option  to 
manually create your own network key.
Type a password that you would like to use for wireless security 
in the Wireless Security Password eld.
Click Next to continue.

83D-Link DIR-604 User Manual
Section 4 - Security
The  following  window  appears  to  indicate  that  the  Wireless 
Connection Setup Wizard is complete.
If  you  selected  the  option  that  automatically  generated  a 
network key, the automatically generated key will display next 
to the Pre-Shared Key eld.
If you manually specied a network key, the Wireless Security 
Password that you specied will display next to the Pre-Shared 
Key eld.
Click Save to nish the Security Wizard.

84D-Link DIR-604 User Manual
Section 4 - Security
From  the  Setup  >  Wireless  Settings  screen,  click  Add 
Wireless Device with WPS.
Add Wireless Device with WPS Wizard
PIN: Select this option to use PIN method. In order to use this 
method you must know the wireless client’s 8 digit PIN and 
click Connect.
PBC: Select this option to use PBC (Push Button) method to 
add a wireless client. Click Connect.
Select Auto to add a wireless client using WPS (Wi-Fi Protected 
Setup). Once you select Auto and click Connect, you will have 
a 120 second time limit to apply the settings to your wireless 
client(s) and successfully establish a connection. 
If you select Manual, a settings summary screen will appear. 
Write down the security key and enter this on your wireless 
clients. 

85D-Link DIR-604 User Manual
Section 4 - Security
Configure WPA-Personal (PSK)
It is recommended to enable encryption on your wireless router before your wireless network adapters. Please establish 
wireless connectivity before enabling encryption. Your wireless signal may degrade when enabling encryption due to 
the added overhead.
1. Log into the web-based conguration by opening a web browser 
and entering the IP address of the router (192.168.0.1). Click on 
Setup and then click Wireless Settings on the left side and then 
click the Manual Wireless Network Setup button.
2. Select Enable WPA/WPA2 Wireless Security (enhanced) from 
the Security Mode drop-down menu.
3.  Select  Auto(TKIP/AES),  TKIP,  or  AES  from  the  Cipher Type 
drop-down menu. If you have wireless clients that use both types, 
use TKIP/AES.
4. Select PSK from the PSK / EAP drop-down menu.
5. Enter a key (passphrase) in the Network Key eld. The key is entered as a pass-phrase in either ASCII or HEX format. 
If using ASCII format the pass-phrase must be between 8-63 characters.  If using HEX format the pass-phrase must 
be 64 characters. The ASCII or HEX pass-phrase must be the same at both ends of the wireless connection.
6. Click Save Settings to save your settings. If you are conguring the router with a wireless adapter, you will lose 
connectivity until you enable WPA-PSK on your adapter and enter the same passphrase as you did on the router.

86D-Link DIR-604 User Manual
Section 4 - Security
Configure WPA-Enterprise (RADIUS)
It is recommended to enable encryption on your wireless router before your wireless network adapters. Please establish 
wireless connectivity before enabling encryption. Your wireless signal may degrade when enabling encryption due to 
the added overhead.
1. Log into the web-based conguration by opening a web browser 
and entering the IP address of the router (192.168.0.1). Click on 
Setup and then click Wireless Settings on the left side and then 
click the Manual Wireless Network Setup button.
2. Select Enable WPA/WPA2 Wireless Security (Enhanced) from 
the Security Mode drop-down menu.
3.  Select  Auto(TKIP/AES),  TKIP,  or  AES  from  the  Cipher Type 
drop-down menu. If you have wireless clients that use both types, 
use TKIP/AES.
4. Select EAP from the PSK / EAP drop-down menu.
5. Enter the IP Address of your RADIUS server in the RADIUS Server IP Address eld.
6. Enter the port you are using with your RADIUS server in the Port eld.
7. Enter the security key in the Shared Secret eld.
8. Click Save Settings to save your settings. If you are conguring the router with a wireless adapter, you will lose 
connectivity until you enable WPA-Enterprise (RADIUS) on your adapter and enter the same passphrase as you did 
on the router.

87D-Link DIR-604 User Manual
Section 5 - Connecting to a Wireless Network
Connect to a Wireless Network
Using Windows Vista®
Windows Vista® users may use the built-in wireless utility. If you are using another company’s utility or Windows® 2000, 
please refer to the user manual of your wireless adapter for help with connecting to a wireless network. Most utilities 
will have a “site survey” option similar to the Windows Vista® utility as seen below.
Right-click on the wireless computer icon in your system tray 
(lower-right  corner  next  to  the  time).  Select  Connect  to  a 
network.
If you receive the Wireless Networks Detected bubble, click 
on the center of the bubble to access the utility.
     or
The utility will display any available wireless networks in your 
area. Click on a network (displayed using the SSID) and click 
the Connect button.
If you get a good signal but cannot access the Internet, check 
you  TCP/IP  settings  for  your  wireless  adapter.  Refer  to  the 
Networking Basics section in this manual for more information.

88D-Link DIR-604 User Manual
Section 5 - Connecting to a Wireless Network
Configure WPA/WPA2
It is recommended to enable wireless security (WPA/WPA2) on your wireless router or access point before conguring 
your wireless adapter. If you are joining an existing network, you will need to know the security key or passphrase 
being used.
2. Highlight the wireless network (SSID) you would like to 
connect to and click Connect.
1. Open the Windows Vista® Wireless Utility by right-clicking 
on the wireless computer icon in your system tray (lower 
right corner of screen). Select Connect to a network. 

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Section 5 - Connecting to a Wireless Network
3. Enter the same security key or passphrase that is on your router 
and click Connect.
It may take 20-30 seconds to connect to the wireless network. If the 
connection fails, please verify that the security settings are correct. 
The key or passphrase must be exactly the same as on the wireless 
router.

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Section 5 - Connecting to a Wireless Network
Connect Using WCN 2.0
The Router supports Wi-Fi protection, referred to as WCN 2.0 in Windows Vista®. The following instructions for setting 
this up depends on whether you are using Windows Vista® to congure the router or third party software.        
When you rst set up the Router, Wi-Fi protection is disabled and uncongured. To enjoy the benets of Wi-Fi protection, 
the router must be both enabled and congured. There are three basic methods to accomplish this: use Windows 
Vista’s built-in support for WCN 2.0, use software provided by a third party, or manually congure. 
If you are running Windows Vista®, log into the router and click the Enable checkbox in the Advanced > Wi-Fi Protected 
Setup window. Use the Current PIN that is displayed in the PIN Settings section of Advanced > Wi-Fi Protected 
Setup window or choose to click the Generate New PIN button or Reset PIN to Default button. 
If you are using third party software to set up Wi-Fi Protection, carefully follow the directions. When you are nished, 
proceed to the next section to set up the newly-congured router.

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Section 5 - Connecting to a Wireless Network
Using Windows® XP
Windows® XP users may use the built-in wireless utility (Zero Conguration Utility). The following instructions are for 
Service Pack 2 users.  If you are using another company’s utility or Windows® 2000, please refer to the user manual 
of your wireless adapter for help with connecting to a wireless network. Most utilities will have a “site survey” option 
similar to the Windows® XP utility as seen below.
If you receive the Wireless Networks Detected bubble, click 
on the center of the bubble to access the utility.
     or
Right-click on the wireless computer icon in your system tray 
(lower-right corner next to the time). Select View Available 
Wireless Networks.
The utility will display any available wireless networks in your 
area. Click on a network (displayed using the SSID) and click 
the Connect button.
If you get a good signal but cannot access the Internet, check 
you  TCP/IP  settings  for  your  wireless  adapter.  Refer  to  the 
Networking Basics section in this manual for more information.

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Section 5 - Connecting to a Wireless Network
Configure WPA-PSK
It is recommended to enable WEP on your wireless router or access point before conguring your wireless adapter. If 
you are joining an existing network, you will need to know the WEP key being used.
2. Highlight the wireless network (SSID) you would like to 
connect to and click Connect.
1. Open the Windows® XP Wireless Utility by right-clicking 
on  the  wireless  computer  icon  in  your  system  tray  
(lower-right  corner  of  screen).  Select  View  Available 
Wireless Networks. 

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Section 5 - Connecting to a Wireless Network
3. The  Wireless  Network  Connection  box  will  appear.  Enter  the 
WPA-PSK passphrase and click Connect.
It may take 20-30 seconds to connect to the wireless network. If the 
connection fails, please verify that the WPA-PSK settings are correct. 
The  WPA-PSK  passphrase  must  be  exactly  the  same  as  on  the 
wireless router.

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Section 6 - Troubleshooting
Troubleshooting
This chapter provides solutions to problems that can occur during the installation and operation of the DIR-604.  Read 
the following descriptions if you are having problems.  (The examples below are illustrated in Windows® XP.  If you 
have a different operating system, the screen shots on your computer will look similar to the following examples.)
1. Why can’t I access the Web-based conguration utility?
When entering the IP address of the D-Link Router (192.168.0.1 for example), you are not connecting to a Website 
on the Internet or have to be connected to the Internet. The device has the utility built-in to a ROM chip in the device 
itself. Your computer must be on the same IP subnet to connect to the Web-based utility. 
• Make sure you have an updated Java-enabled Web browser. We recommend the following: 
• Internet Explorer 6.0 or higher 
• Netscape 8 or higher 
• Mozilla 1.7.12 (5.0) or higher 
• Opera 8.5 or higher 
• Safari 1.2 or higher (with Java 1.3.1 or higher) 
• Camino 0.8.4 or higher 
• Firefox 1.5 or higher 
• Verify physical connectivity by checking for solid link lights on the device. If you do not get a solid link light, try using 
a different cable or connect to a different port on the device if possible. If the computer is turned off, the link light may 
not be on.
• Disable any Internet security software running on the computer. Software rewalls such as Zone Alarm, Black Ice, 
Sygate, Norton Personal Firewall, and Windows® XP rewall may block access to the conguration pages. Check the 
help les included with your rewall software for more information on disabling or conguring it.

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Section 6 - Troubleshooting
• Congure your Internet settings:
• Go to Start > Settings > Control Panel. Double-click the Internet Options Icon. From the Security tab, 
click the button to restore the settings to their defaults.
• Click the Connection tab and set the dial-up option to Never Dial a Connection. Click the LAN Settings 
button. Make sure nothing is checked. Click OK. 
• Go to the Advanced tab and click the button to restore these settings to their defaults. Click OK three 
times.
• Close your Web browser (if open) and open it.
• Access the Web management. Open your Web browser and enter the IP address of your D-Link router in the address 
bar. This should open the login page for your the Web management. 
• If you still cannot access the conguration, unplug the power to the router for 10 seconds and plug back in. Wait 
about 30 seconds and try accessing the conguration. If you have multiple computers, try connecting using a different 
computer.
2. What can I do if I forgot my password?
If you forgot your password, you must reset your router. Unfortunately this process will change all your settings back 
to the factory defaults.
To reset the router, locate the reset button (hole) on the rear panel of the unit. With the router powered on, use a 
paperclip to hold the button down for 10 seconds. Release the button and the router will go through its reboot process. 
Wait about 30 seconds to access the router. The default IP address is 192.168.0.1. When logging in, the username is 
admin and leave the password box empty.

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Section 6 - Troubleshooting
3. Why can’t I connect to certain sites or send and receive e-mails when connecting through my router? 
If you are having a problem sending or receiving e-mail, or connecting to secure sites such as eBay, banking sites, 
and Hotmail, we suggest lowering the MTU in increments of ten (Ex. 1492, 1482, 1472, etc). 
Note: AOL DSL+ users must use MTU of 1400. 
To nd the proper MTU Size, you’ll have to do a special ping of the destination you’re trying to go to. A destination 
could be another computer, or a URL. 
• Click on Start and then click Run. 
• Windows® 95, 98, and Me users type in command (Windows® NT, 2000, and XP users type in cmd) and 
press Enter (or click OK). 
• Once the window opens, you’ll need to do a special ping. Use the following syntax: 
  ping [url] [-f] [-l] [MTU value] 
Example: ping yahoo.com -f -l 1472 

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Section 6 - Troubleshooting
You should start at 1472 and work your way down by 10 each time. Once you get a reply, go up by 2 until you get a 
fragmented packet. Take that value and add 28 to the value to account for the various TCP/IP headers. For example, 
lets say that 1452 was the proper value, the actual MTU size would be 1480, which is the optimum for the network 
we’re working with (1452+28=1480). 
Once you nd your MTU, you can now congure your router with the proper MTU size. 
To change the MTU rate on your router follow the steps below: 
• Open your browser, enter the IP address of your router (192.168.0.1) and click OK. 
• Enter your username (admin) and password (blank by default). Click OK to enter the web conguration 
page for the device. 
• Click on Setup>Internet and then click Manual Internet Connection Setup.  
• To change the MTU enter the number in the MTU eld and click Save Settings to save your settings. 
• Test your e-mail. If changing the MTU does not resolve the problem, continue changing the MTU in 
increments of ten. 

98D-Link DIR-604 User Manual
Appendix A - Wireless Basics
D-Link wireless products are based on industry standards to provide easy-to-use and compatible high-speed wireless 
connectivity within your home, business or public access wireless networks. Strictly adhering to the IEEE standard, 
the D-Link wireless family of products will allow you to securely access the data you want, when and where you want 
it. You will be able to enjoy the freedom that wireless networking delivers.
A wireless local area network (WLAN) is a cellular computer network that transmits and receives data with radio signals 
instead of wires. Wireless LANs are used increasingly in both home and ofce environments, and public areas such 
as airports, coffee shops and universities. Innovative ways to utilize WLAN technology are helping people to work and 
communicate more efciently. Increased mobility and the absence of cabling and other xed infrastructure have proven 
to be benecial for many users. 
Wireless users can use the same applications they use on a wired network.  Wireless adapter cards used on laptop 
and desktop systems support the same protocols as Ethernet adapter cards. 
Under many circumstances, it may be desirable for mobile network devices to link to a conventional Ethernet LAN in 
order to use servers, printers or an Internet connection supplied through the wired LAN.  A Wireless Router is a device 
used to provide this link.
Wireless Basics

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Appendix A - Wireless Basics
What is Wireless?
Wireless or Wi-Fi technology is another way of connecting your computer to the network without using wires. 
Wi-Fi uses radio frequency to connect wirelessly, so you have the freedom to connect computers anywhere 
in your home or ofce network.
Why D-Link Wireless? 
D-Link is the worldwide leader and award winning designer, developer, and manufacturer of networking 
products. D-Link delivers the performance you need at a price you can afford. D-Link has all the products 
you need to build your network.
How does wireless work? 
Wireless works similar to how cordless phone work, through radio signals to transmit data from one point 
A to point B. But wireless technology has restrictions as to how you can access the network. You must be 
within the wireless network range area to be able to connect your computer. There are two different types 
of wireless networks Wireless Local Area Network (WLAN), and Wireless Personal Area Network (WPAN).
Wireless Local Area Network (WLAN)
In a wireless local area network, a device called an access point (AP) connects computers to the network. 
The access point has a small antenna attached to it, which allows it to transmit data back and forth over 
radio signals. With an indoor access point as seen in the picture, the signal can travel up to 300 feet. With 
an outdoor access point the signal can reach out up to 30 miles to serve places like manufacturing plants, 
industrial locations, college and high school campuses, airports, golf courses, and many other outdoor venues.

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Appendix A - Wireless Basics
Wireless Personal Area Network (WPAN)
Bluetooth is the industry standard wireless technology used for WPAN. Bluetooth devices in WPAN operate 
in a range up to 30 feet away.
Compared  to  WLAN  the  speed  and  wireless  operation  range  are  both  less  than  WLAN,  but  in  return  it 
doesn’t use nearly as much power which makes it ideal for personal devices, such as mobile phones, PDAs, 
headphones, laptops, speakers, and other devices that operate on batteries.
Who uses wireless? 
Wireless technology as become so popular in recent years that almost everyone is using it, whether it’s for 
home, ofce, business, D-Link has a wireless solution for it.
Home
•  Gives everyone at home broadband access
•  Surf the Web, check e-mail, instant message, and etc.
•  Gets rid of the cables around the house
•  Simple and easy to use
Small Ofce and Home Ofce
•  Stay on top of everything at home as you would at ofce
•  Remotely access your ofce network from home
•  Share Internet connection and printer with multiple computers
•  No need to dedicate ofce space

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Appendix A - Wireless Basics
Where is wireless used? 
Wireless technology is expanding everywhere not just at home or ofce. People like the freedom of mobility 
and it’s becoming so popular that more and more public facilities now provide wireless access to attract people. 
The wireless connection in public places is usually called “hotspots”.
Using a D-Link Cardbus Adapter with your laptop, you can access the hotspot to connect to Internet from 
remote locations like: Airports, Hotels, Coffee Shops, Libraries, Restaurants, and Convention Centers.
Wireless network is easy to setup, but if you’re installing it for the rst time it could be quite a task not knowing 
where to start. That’s why we’ve put together a few setup steps and tips to help you through the process of 
setting up a wireless network.
Tips
Here are a few things to keep in mind, when you install a wireless network.
Centralize your router or access point
Make  sure  you  place  the  router/access  point  in  a  centralized  location  within  your  network  for  the  best 
performance. Try to place the router/access point as high as possible in the room, so the signal gets dispersed 
throughout your home. If you have a two-story home, you may need a repeater to boost the signal to extend 
the range.
Eliminate Interference 
Place home appliances such as cordless telephones, microwaves, and televisions as far away as possible 
from the router/access point. This would signicantly reduce any interference that the appliances might cause 
since they operate on same frequency.

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Appendix A - Wireless Basics
Security 
Don’t let you next-door neighbors or intruders connect to your wireless network. Secure your wireless network 
by turning on the WPA or WEP security feature on the router. Refer to product manual for detail information 
on how to set it up.
There are basically two modes of networking: 
• Infrastructure – All wireless clients will connect to an access point or wireless router.
• Ad-Hoc  –  Directly  connecting  to  another  computer,  for  peer-to-peer  communication,  using  wireless 
network adapters on each computer, such as two or more DIR-604 wireless network Cardbus adapters.
An Infrastructure network contains an access point or wireless router. All the wireless devices, or clients, will connect 
to the wireless router or access point. 
An Ad-Hoc network contains only clients, such as laptops with wireless cardbus adapters. All the adapters must be in 
Ad-Hoc mode to communicate.
Wireless Modes

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Appendix B - Networking Basics
Networking Basics
Check your IP address
After you install your adapter, by default, the TCP/IP settings should be set to obtain an IP address from a DHCP server 
(i.e. wireless router) automatically. To verify your IP address, please follow the steps below.
Click on Start > Run. In the run box type cmd and click OK. (Windows Vista® users type cmd in the Start Search box.)
At the prompt, type ipconfig and press Enter.
This will display the IP address, subnet mask, and 
the default gateway of your adapter.
If  the  address  is  0.0.0.0,  check  your  adapter 
installation, security settings, and the settings on 
your router. Some rewall software programs may 
block a DHCP request on newly installed adapters. 

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Appendix B - Networking Basics
Statically Assign an IP address
If you are not using a DHCP capable gateway/router, or you need to assign a static IP address, please follow the steps 
below:
Step 1
Windows Vista® -  Click on Start > Control Panel > Network and Internet > Network and Sharing Center > Manage 
Network Connections.
Windows® XP -  Click on Start > Control Panel > Network Connections.
Windows® 2000 -  From the desktop, right-click My Network Places > Properties.
Step 2
Right-click on the Local Area Connection which represents your network adapter and select Properties.
Step 3
Highlight Internet Protocol (TCP/IP) and click Properties.
Step 4
Click Use the following IP address and enter an IP address that is on the same 
subnet as your network or the LAN IP address on your router. 
Example: If the router´s LAN IP address is 192.168.0.1, make your IP address 
192.168.0.X where X is a number between 2 and 99. Make sure that the number 
you choose is not in use on the network. Set Default Gateway the same as the LAN 
IP address of your router (192.168.0.1). 
Set Primary DNS the same as the LAN IP address of your router (192.168.0.1). 
The Secondary DNS is not needed or you may enter a DNS server from your ISP.
Step 5
Click OK twice to save your settings.

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Appendix D - Contacting Technical Support
以下警語適用台灣地
經型式認證合格之低功率射頻電機,非經許可,公司、商號或使用者均不得擅自變更頻率、
加大功率或變更原設計之特性及功能。 
低功率射頻電機之使用不得影響飛航安全及干擾合法通信;經發現有干擾現象時,應立即停
用,並改善至無干擾時方得繼續使用。前項合法通信,指依電信法規定作業之無線電通信。
低功率射頻電機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。
Federal Communication Commission Interference Statement 
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two 
conditions: (1) This device may not cause harmful interference, and (2) this device must 
accept any interference received, including interference that may cause undesired operation. 
This equipment has been tested and found to comply with the limits for a Class B digital 
device, pursuant to Part 15 of the FCC Rules.  These limits are designed to provide 
reasonable protection against harmful interference in a residential installation. This equipment 
generates, uses and can radiate radio frequency energy and, if not installed and used in 
accordance with the instructions, may cause harmful interference to radio communications.  
However, there is no guarantee that interference will not occur in a particular installation.    If 
this equipment does cause harmful interference to radio or television reception, which can be 
determined by turning the equipment off and on, the user is encouraged to try to correct the 
interference by one of the following measures: 
-  Reorient or relocate the receiving antenna. 
-  Increase the separation between the equipment and receiver. 
-  Connect the equipment into an outlet on a circuit different from that 
to which the receiver is connected. 
-  Consult the dealer or an experienced radio/TV technician for help. 
FCC Caution: Any changes or modifications not expressly approved by the party responsible 
for compliance could void the user's authority to operate this equipment. 
This transmitter must not be co-located or operating in conjunction with any other antenna or 
transmitter. 
Radiation Exposure Statement: 
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled 
environment. This equipment should be installed and operated with minimum distance 20cm 
between the radiator & your body.