D-Link DIR-840 User Manual
User Manual
Wireless N600 VPN Router
Version 1.0 | 11/06/2013
DIR-840
iD-Link DIR-840 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.
Manual Revisions
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 © 2013 by D-Link Corporation.
All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written permission
from D-Link Corporation.
Revision Date Description
1.0 November 06, 2013 • Initial release
Preface
iiD-Link DIR-840 User Manual
Table of Contents
Preface ................................................................................. i
Manual Revisions ........................................................................... i
Trademarks ...................................................................................... i
Product Overview .............................................................. 1
Package Contents .........................................................................1
System Requirements ................................................................. 2
Introduction ...................................................................................3
Features ............................................................................................ 4
Hardware Overview ..................................................................... 5
Back............................................................................................ 5
Front .......................................................................................... 6
Installation .........................................................................7
Before you Begin ........................................................................... 7
Wireless Installation Considerations ...................................... 8
Wall-Mount Kit Installation .......................................................9
Hardware Setup ..........................................................................10
Conguration ................................................................... 12
Web Setup Wizard ......................................................................12
Web-based Conguration Utility ..........................................17
Internet Connection Setup .....................................................18
Internet Connection Wizard ............................................18
Manual Internet Connection ..........................................20
Static (assigned by ISP) ................................................21
Dynamic (DHCP) .............................................................22
PPPoE (DSL) ......................................................................23
PPTP ....................................................................................25
L2TP ....................................................................................27
3G ........................................................................................29
Wireless Settings .........................................................................31
Wireless Setup Wizard .......................................................32
WPS Connection Wizard ...................................................33
Manual Wireless Settings .................................................35
Network Settings ........................................................................38
VPN Settings .................................................................................39
VPN Setup Wizard ...............................................................39
Dynamic IPSec VPN .......................................................40
IPSec VPN ..........................................................................41
PPTP VPN ...........................................................................42
L2TP VPN ...........................................................................43
VPN Manual Settings .........................................................44
IPSec Settings ..................................................................45
PPTP/L2TP Settings .......................................................47
GRE Settings ....................................................................48
IPv6 ..................................................................................................49
Static IPv6 ..............................................................................50
Autoconguration ..............................................................51
PPPoE ......................................................................................52
IPv6 over IPv4 Tunneling ..................................................53
6 to 4 Tunneling ...................................................................54
6rd ............................................................................................55
Link-Local Connectivity ....................................................56
Table of Contents
iiiD-Link DIR-840 User Manual
Table of Contents
IP Alias.............................................................................................57
Port Setting ...................................................................................58
Virtual Computer ........................................................................59
Advanced .........................................................................60
Virtual Server ................................................................................60
Application Rules ........................................................................61
QoS Engine ...................................................................................62
Network Filter ..............................................................................64
Web Filter.......................................................................................65
Firewall Setting ............................................................................66
Routing ...........................................................................................68
Advanced Wireless .....................................................................69
Wi-Fi Protected Setup ...............................................................70
Advanced Network Settings ...................................................71
Guest Zone ....................................................................................72
IPv6 Firewall ..................................................................................73
User Group ....................................................................................74
Maintenance ....................................................................75
Admin .............................................................................................75
Time .................................................................................................76
SysLog .............................................................................................77
Email Settings ..............................................................................78
System ............................................................................................79
Firmware ........................................................................................80
Dynamic DNS ...............................................................................81
System Check ...............................................................................82
Schedule ........................................................................................83
Status ................................................................................84
Device Info ....................................................................................84
Log ...................................................................................................85
Statistics .........................................................................................86
Active Session ..............................................................................87
Wireless ..........................................................................................88
Routing ...........................................................................................89
VPN ..................................................................................................90
IPv6 ..................................................................................................91
Support ............................................................................ 92
Troubleshooting ..............................................................93
Wireless Basics ................................................................. 97
Tips ................................................................................................ 100
Wireless Modes ......................................................................... 101
Networking Basics .........................................................102
Check your IP address ............................................................ 102
Statically Assign an IP address ............................................ 103
Technical Specications ................................................104
GPL Code Statement......................................................105
Safety Statements .........................................................117
1D-Link DIR-840 User Manual
Section 1 - Product Overview
Product Overview
Package Contents
Note: Using a power supply with a dierent voltage rating than the one included with the DIR-840 will cause damage and void the warranty
for this product.
If any of the above items are missing, please contact your reseller.
DIR-840 Wireless N600 VPN Router
Two Detachable Antennas
Ethernet Cable
Power Adapter
Optional Wall-Mount Kit
2D-Link DIR-840 User Manual
Section 1 - Product Overview
Network Requirements
• An Ethernet-based Cable or DSL modem
• IEEE 802.11n or 802.11g wireless clients
• 10/100/1000 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 7 or higher
• Firefox 12 or higher
• Safari 4 or higher
• Chrome 20 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-840 User Manual
Section 1 - Product Overview
Introduction
ULTIMATE PERFORMANCE
The D-Link Wireless N600 VPN Router (DIR-840) is a 802.11n compliant device that delivers real world performance of up to 14x faster
than an 802.11g wireless connection (also faster than a 100 Mbps wired Ethernet connection). Create a secure wireless network to share
photos, les, music, video, printers, and network storage throughout your home. Connect the DIR-840 router to a cable or DSL modem
and share your high-speed Internet access with everyone on the network. In addition, this router includes a Quality of Service (QoS)
engine that keeps digital phone calls (VoIP) and online gaming smooth and responsive, providing a better Internet experience.
EXTENDED WIRELESS COVERAGE
Powered by Wireless N technology, this high performance router provides superior home coverage throughout your home while
reducing dead spots. The router is designed for use in bigger homes and for users who demand higher performance networking. Add a
Wireless N
notebook or desktop adapter and stay connected to your network from virtually anywhere in your home.
TOTAL NETWORK SECURITY
The Wireless N router supports all of the latest wireless security features to prevent unauthorized access from over the wireless network
or the Internet. Support for WPA/WPA2 standards ensure that you’ll be able to use the best possible encryption method, regardless of
your client devices. In addition, this router utilizes dual active rewalls (SPI and NAT) to prevent potential attacks from across the Internet.
* Maximum wireless signal rate derived from IEEE Standard 802.11n specications. Actual data throughput will vary. Network conditions and environmental factors, including
volume of network trac, building materials and construction, and network overhead, lower actual data throughput rate. Environmental conditions will adversely aect wireless
signal range.
4D-Link DIR-840 User Manual
Section 1 - Product Overview
• Faster Wireless Networking - The DIR-840 provides up to 300 Mbps* 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. The performance of this 802.11n wireless router gives you the freedom of
wireless networking at speeds 14x faster than 802.11g.
• Compatible with 802.11b/g/n Devices - The DIR-840 is still fully compatible with the IEEE 802.11b, 802.11g,
and 802.11n standards, so it can connect with existing 802.11b, 802.11g, and 802.11n PCI, USB, and CardBus
adapters.
• Advanced Firewall Features - The web-based user interface displays a number of advanced network
management features including:
• Secure Multiple/Concurrent Sessions - The DIR-840 can pass through VPN sessions. It supports
multiple and concurrent IPSec and PPTP sessions, so users behind the DIR-840 can securely access
corporate networks.
• User-friendly Setup Wizard - Through its easy-to-use web-based user interface, the DIR-840 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 802.11n specications. Actual data throughput will vary. Network conditions and environmental factors, including
volume of network trac, building materials and construction, and network overhead, lower actual data throughput rate. Environmental conditions will adversely aect wireless
signal range.
Features
5D-Link DIR-840 User Manual
Section 1 - Product Overview
Hardware Overview
Back
1 LAN Ports (1-4) Connect 10/100 Ethernet devices such as computers, switches, and NAS.
2 Internet Port The auto MDI/MDIX Internet port is the connection for the Ethernet cable to the cable or DSL modem.
3 Reset Button Pressing the Reset button (for 3 seconds) restores the router to its original factory default settings.
4 Power Receptor Receptor for the supplied power adapter.
5 Power Button Turns the device On/O.
1 2 43 5
6D-Link DIR-840 User Manual
Section 1 - Product Overview
Hardware Overview
Front
1 Power LED A solid light indicates a proper connection to the power supply.
2 Internet LED A solid light indicates connection on the Internet port. This LED blinks during data transmission.
3 WLAN LED (2.4 GHz)
A solid light indicates that the 2.4 GHz wireless segment is ready. This LED blinks during wireless data
transmission.
4 WLAN LED (5 GHz)
A solid light indicates that the 5 GHz wireless segment is ready. This LED blinks during wireless data
transmission.
5 LAN LEDs (1-4)
A solid light indicates a connection to an Ethernet-enabled computer on ports 1-4. This LED blinks during
data transmission.
6 USB 2.0 port Allows you to connect 3G modems.
1 2 3
4
5 6
7D-Link DIR-840 User Manual
Section 2 - Installation
Before you Begin
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, a cabinet, or in the attic or garage.
• Please congure the router with the computer that was last connected directly to your modem.
• You can only use the Ethernet port on your modem. If you were using the USB connection before using the router,
then you must turn o your modem, disconnect the USB cable and connect an Ethernet cable to the Internet port
on the router, and then turn the modem back on. In some cases, you may need to call your ISP to change connection
types (USB to Ethernet).
• If you have DSL and are connecting via PPPoE, make sure you disable or uninstall any PPPoE software such as WinPoET,
BroadJump, or EnterNet 300 from your computer or you will not be able to connect to the Internet.
8D-Link DIR-840 User Manual
Section 2 - Installation
Wireless Installation Considerations
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 (.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 dierence. A solid metal door or aluminum studs may have a negative eect 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 2.4 GHz 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 2.4 GHz 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.
9D-Link DIR-840 User Manual
Section 2 - Installation
Step 1. Align the attachment plate to your preferred position, and mark the hole positions on the wall, preferably
after locating studs in the wall.
Step 2. Where studs cannot be found, make holes in the wall and insert the provided screw anchors. Check that the
screw anchors are securely in place.
Step 3. Securely screw down the attachment plate on the wall.
The wall-mount kit includes the following items:
- Two 2 cm screws
- Two screw anchors
- One attachment plate
Wall-Mount Kit Installation
Step 4. Hang the router on the wall by sliding the tops of the screws through the holes on the bottom of the router
and then slide to lock into position. Conrm the the router is rmly in place.
DIR-840
Wall mount hole Wall mount hole
10D-Link DIR-840 User Manual
Section 2 - Installation
1. Turn o and unplug your cable or DSL broadband modem. This is required.
Hardware Setup
2. Position your router close to your modem and a computer. Place the router in an open area of your intended
work area for better wireless coverage.
3. Unplug the Ethernet cable from your modem (or existing router if upgrading) that is connected to your computer.
Plug it into the blue port labeled 1 on the back of your router. The router is now connected to your computer.
INTERNET
Modem
DIR-840
Computer
11D-Link DIR-840 User Manual
Section 2 - Installation
4. Plug one end of the included blue Ethernet cable that came with your router into the yellow port labeled
INTERNET on the back of the router. Plug the other end of this cable into the Ethernet port on your modem.
5. Reconnect the power adapter to your cable or DSL broadband modem and wait for two minutes.
6. Connect the supplied power adapter into the power port on the back of the router and then plug it into a power
outlet or surge protector. Press the power button and verify that the power LED is lit. Allow 1 minute for the
router to boot up.
7. If you are connecting to a broadband service that uses a dynamic connection (not PPPoE), you may be online
already. Try opening a web browser and enter a web site. If you connect, you are nished with your Internet setup.
Please skip to page 17 to congure your router and use the manual setup procedure to congure your network and
wireless settings. If you did not connect to the Internet, use the Web Setup Wizard (refer to page 12).
INTERNET
INTERNET
DIR-840
DIR-840
Modem
12D-Link DIR-840 User Manual
Section 3 - Setup
Web Setup Wizard
Conguration
Open your web browser and the setup wizard will automatically
launch.
Step 1: The Welcome screen will appear. Click Next to continue.
Step 2: The router will automatically detect your Internet
connection type.
Step 3: If the router could not automatically detect your connection
type, select your connection type and click Next to continue.
13D-Link DIR-840 User Manual
Section 3 - Setup
If you selected PPPoE, enter your PPPoE username and password.
Click Next to continue.
Note: Make sure to remove your PPPoE software from your computer. The
software is no longer needed and will not work through a router.
If you selected PPTP, enter your PPTP settings supplied by your ISP
and your PPTP username and password. Click Next to continue.
If you selected L2TP, enter your L2TP settings supplied by your ISP
and your L2TP username and password. Click Next to continue.
14D-Link DIR-840 User Manual
Section 3 - Setup
If you selected Static, enter your network settings supplied by your
Internet provider. Click Next to continue.
If you selected 3g, in most cases you can choose Auto-Detection
to get a connection.
Otherwise choose Manual and ll in the settings provided by your
3g network provider.
Click Next to continue.
15D-Link DIR-840 User Manual
Section 3 - Setup
Step 4: Create a name for your wireless network (SSID), create a
password for your wireless network (Wi-Fi password), and then
click Next to continue.
Step 5: Create a new password and then click Next to continue.
16D-Link DIR-840 User Manual
Section 3 - Setup
Step 6: Select your time zone from the drop-down menu and
then click Next to continue.
The router will reboot. Please allow 1-2 minutes.
Close your browser window and reopen it to test your Internet
connection. It may take a few tries to initially connect to the
Internet.
Step 8: You may bookmark the router’s web UI by clicking OK. If
you do not want to bookmark the link, click Cancel.
Step 7: Your setup is complete. Click Save to continue.
17D-Link DIR-840 User Manual
Section 3 - Setup
Web-based Conguration Utility
To access the conguration utility, open a web-browser such
as Internet Explorer and enter the IP address of the router
(http://192.168.0.1 or use http://dlinkrouter.local.).
Type admin in the User Name eld and the password
should be 1234.
Web Root User
(Public):
Type user in the User Name eld and the password should
be user.
Web User
(Read Only):
You will be presented with the login screen. The default usernames
and passwords are as follows:
18D-Link DIR-840 User Manual
Section 3 - Setup
Internet Connection Setup
Use this tab to choose if you want to follow the simple steps of the
Connection Setup Wizard, or if you want to set up your Internet
connection manually.
Internet Connection Wizard
Click Next to begin the Setup Wizard.
19D-Link DIR-840 User Manual
Section 3 - Setup
STEP 1: Choose a password for your device.
STEP 3: Choose the method you use to connect to the Internet,
and follow the step-by-step instructions.
STEP 2: Select your time zone from the drop-down menu.
20D-Link DIR-840 User Manual
Section 3 - Setup
Manual Internet Connection
Use this tab to choose either Static IP, DHCP, PPPoE, PPTP, L2TP, or
3G to congure your Internet connection. You may need to get
this information from your ISP (Internet Service Provider).
21D-Link DIR-840 User Manual
Section 3 - Setup
Select Static IP to manually enter the IP settings supplied
by your ISP.
Check the box to enable a backup connection.
If you enabled Auto-Backup, enter the IP address of the
backup connection.
Enter the IP address assigned by your ISP.
Enter the subnet mask assigned by your ISP.
Enter the gateway assigned by your ISP.
The DNS server information will be supplied by your ISP
(Internet Service Provider.)
Maximum Transmission Unit - you may need to change the
MTU for optimal performance with your specic ISP. 1500
is the default MTU.
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 Clone Your
PC’s MAC Address button to replace the Internet port’s
MAC address with the MAC address of your Ethernet card.
My Internet
Connection Is:
Auto-Backup:
Internet Host:
IP Address:
Subnet Mask:
Default Gateway:
DNS Servers:
MTU:
MAC Address:
Static (assigned by ISP)
Select Static IP 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.
22D-Link DIR-840 User Manual
Section 3 - Setup
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. This option is
commonly used for cable modem services.
Check the box to enable a backup connection.
If you enabled Auto-Backup, enter the IP address of the
backup connection.
Enter the primary and secondary DNS server IP addresses
assigned by your ISP. These addresses are usually obtained
automatically from your ISP. Leave at 0.0.0.0 if you did not
specically receive these from your ISP.
Maximum Transmission Unit - you may need to change
the MTU for optimal performance with your specic ISP.
1500 is the default MTU.
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
Clone Your PC’s MAC Address button to replace the
Internet port’s MAC address with the MAC address of your
Ethernet card.
My Internet
Connection Is:
Auto-Backup:
Internet Host:
Primary/Secondary
DNS Server:
MTU:
MAC Address:
Dynamic IP (DHCP)
23D-Link DIR-840 User Manual
Section 3 - Setup
Select PPPoE (Username/Password) from the drop-down
menu.
Check the box to enable a backup connection.
If you enabled Auto-Backup, enter the IP address of the
backup connection.
Select Static IP if your ISP assigned you the IP address,
subnet mask, gateway, and DNS server addresses. In most
cases, select Dynamic IP.
Enter the IP address (Static PPPoE only).
Enter your PPPoE user name.
Enter your PPPoE password and then retype the password
in the next box.
Enter the ISP service name (optional).
Select either Always-on, On-Demand, or Manual.
Enter a maximum idle time during which the Internet
connection is maintained during inactivity. To disable this
feature, enable Auto-reconnect.
My Internet
Connection Is:
Auto-Backup:
Internet Host:
Address Mode:
IP Address:
User Name:
Password:
Service Name:
Reconnect
Mode:
Maximum Idle
Time:
PPPoE (DSL)
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.
24D-Link DIR-840 User Manual
Section 3 - Setup
Enter the primary and secondary DNS server addresses
(Static PPPoE only).
Maximum Transmission Unit - you may need to change the
MTU for optimal performance with your specic ISP. 1492
is the default MTU.
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 Clone Your
PC’s MAC Address button to replace the Internet port’s
MAC address with the MAC address of your Ethernet card.
DNS Addresses:
MTU:
MAC Address:
25D-Link DIR-840 User Manual
Section 3 - Setup
Select PPTP from the drop-down menu.
Select Static IP if your ISP assigned you the IP address,
subnet mask, gateway, and DNS server addresses. In most
cases, select Dynamic IP.
Enter the IP address for your PPTP connection.
Enter your PPTP subnet mask.
Enter the gateway IP address for your PPTP connection.
Enter the server IP address for your PPTP connection.
Enter your PPTP user name.
Enter your PPTP password and then retype the password
in the next box.
Select either Always-on, On-Demand, or Manual.
Enter a maximum idle time during which the Internet
connection is maintained during inactivity. To disable this
feature, enable Auto-reconnect.
Enter the primary and secondary DNS server addresses
(Static PPTP only).
My Internet
Connection Is:
Address Mode:
PPTP IP Address:
PPTP Subnet Mask:
PPTP Gateway IP
Address:
PPTP Server IP
Address:
User Name:
Password:
Reconnect Mode:
Maximum Idle
Time:
DNS Addresses:
PPTP
Choose PPTP if your ISP uses a PPTP connection. Your ISP will provide you with a username and password.
26D-Link DIR-840 User Manual
Section 3 - Setup
Maximum Transmission Unit - you may need to change the
MTU for optimal performance with your specic ISP. 1492
is the default MTU.
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 Clone Your
PC’s MAC Address button to replace the Internet port’s
MAC address with the MAC address of your Ethernet card.
MTU:
MAC Address:
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