D-Link DIR-651 User Manual

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Preface

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

Revision	Date	Description
1.0	January 25, 2011	• Initial Release

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.

D-Link DIR-651 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
Connections............................................................................	5
LEDs............................................................................................	6
Installation..........................................................................	7
Before you Begin...........................................................................	7
Wireless Installation Considerations......................................	8
Getting Started..............................................................................	9
Configuration....................................................................	10
Web-based Configuration Utility...........................................	10
Setup Wizard.........................................................................	11
Internet Connection......................................................	11
Wireless Settings.............................................................	11
Manual Configuration........................................................	15
Dynamic (Cable)..............................................................	16
Internet Setup......................................................................	17
PPPoE (DSL)......................................................................	17
PPTP....................................................................................	18

L2TP.....................................................................................	19
Static (assigned by ISP).................................................	20
Wireless Settings..................................................................	21
Network Settings.................................................................	22
DHCP Server Settings....................................................	23
DHCP Reservation..........................................................	24
Virtual Server........................................................................	25
Port Forwarding...................................................................	27
Application Rules................................................................	28
QoS Engine............................................................................	29
Network Filters.....................................................................	31
Access Control......................................................................	32
Access Control Wizard...................................................	32
Website Filter........................................................................	35
Inbound Filter.......................................................................	36
Firewall Settings...................................................................	37
Application Level Gateway Configuration.................	38
Routing...................................................................................	39
Advanced Wireless Settings............................................	40
Wi-Fi Protected Setup (WPS)...........................................	41
Advanced Network Settings............................................	42
UPnP....................................................................................	42
Internet Ping Block.........................................................	42
Internet Port Speed.......................................................	42
Multicast Streams...........................................................	42
Guest Zone............................................................................	43
Administrator Settings......................................................	44

D-Link DIR-651 User Manual

Table of Contents

Time Settings........................................................................	45
SysLog.....................................................................................	46
Email Settings.......................................................................	47
System Settings...................................................................	48
Update Firmware.................................................................	49
Language Pack................................................................	49
DDNS........................................................................................	50
System Check........................................................................	51
Schedules...............................................................................	52
Device Information.............................................................	53
Log............................................................................................	54
Stats..........................................................................................	55
Internet Sessions.................................................................	56
Wireless...................................................................................	57
Support...................................................................................	58
Wireless Security..............................................................	59
What is WPA?.................................................................................	59
Wireless Security Setup Wizard..............................................	60
Configure WPA-Personal (PSK)...............................................	62
Configure WPA-Enterprise (RADIUS)....................................	63
Connect to a Wireless Network........................................	65
Windows® 7...................................................................................	65
Windows Vista®............................................................................	68
Configure Wireless Security.............................................	69
Windows® XP................................................................................	71
Configure WPA-PSK............................................................	72

Troubleshooting...............................................................	74
Wireless Basics..................................................................	78
Tips...................................................................................................	80
Wireless Modes............................................................................	81
Networking Basics............................................................	82
Check your IP address................................................................	82
Technical Specifications...................................................	84
Contacting Technical Support.........................................	85
Warranty............................................................................	86
Registration......................................................................	92

D-Link DIR-651 User Manual

iii

Section 1 - Product Overview

ProductPackageOverviewContents

DIR-651 Wireless N 300 Gigabit Router

Ethernet Cable

Power Adapter

CD-ROM with Manual and Setup Wizard

If any of the above items are missing, please contact your reseller.

Note: Using a power supply with a different voltage rating than the one included with the DIR-651 will cause damage and void the warranty.

D-Link DIR-651 User Manual

Section 1 - Product Overview

System Requirements

Network Requirements	• An Ethernet-based Cable or DSL modem
Network Requirements	• IEEE 802.11n or 802.11g wireless clients
	• 10/100/1000 Ethernet

	Computer with the following:
	• Windows®, Macintosh, or Linux-based operating system
	• An installed Ethernet adapter
Web-based Configuration	Browser Requirements:
Web-based Configuration	• Internet Explorer 6.0 or higher
Utility Requirements	• Chrome 2.0 or higher
	• Firefox 3.0 or higher
	• Safari 3.0 or higher
	Windows® Users: Make sure you have the latest version of Java
	installed. Visit www.java.com to download the latest version.

CD Installation Wizard	Computer with the following:
CD Installation Wizard	• Windows® 7, Vista®, or XP (Service Pack 2 or higher)
Requirements	• An installed Ethernet adapter
	• CD-ROM drive

D-Link DIR-651 User Manual

Section 1 - Product Overview

Introduction

TOTAL PERFORMANCE

Combines award winning router features and 802.11n wireless technology to provide the best wireless performance.

TOTAL SECURITY

The most complete set of security features including Active Firewall and WPA2™ to protect your network against outside intruders.

TOTAL COVERAGE

Provides greater wireless signal rates even at farther distances for best-in-class Whole Home Coverage.

ULTIMATE PERFORMANCE

The D-Link Wireless N 300 Gigabit Router is an 802.11n compliant device that delivers real world performance of up to 650% faster than an 802.11g wireless connection (also faster than a 100Mbps wired Ethernet connection). Create a secure wireless network to share photos, files, music, video, printers, and network storage throughout your home. Connect the 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 WHOLE HOME COVERAGE

Powered by Wireless N 300 technology, this high performance router provides superior Whole Home Coverage 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 300 notebook or desktop adapter and stay connected to your network from virtually anywhere in your home.

TOTAL NETWORK SECURITY

The Router supports all of the latest wireless security features to prevent unauthorized access, be it from over the wireless network or from the Internet. Support for WPA 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 firewalls (SPI and NAT) to prevent potential attacks from across the Internet.

* Maximum wireless signal rate derived from IEEE Standard 802.11g and 802.11n specifications. Actual data throughput will vary. Network conditions and environmental factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput rate. Environmental conditions will adversely affect wireless signal range.

D-Link DIR-651 User Manual

Section 1 - Product Overview

Features

•Faster Wireless Networking - The DIR-651 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. The performance of this 802.11n wireless router gives you the freedom of wireless networking at speeds 650% faster than 802.11g.

•Compatible with 802.11g Devices - The DIR-651 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 filtering based on MAC Address, URL, and/or Domain Name.

•Filter Scheduling - These filters can be scheduled to be active on certain days or for a duration of hours or minutes.

•Secure Multiple/Concurrent Sessions - The DIR-651 can pass through VPN sessions. It supports multiple and concurrent IPSec and PPTP sessions, so users behind the DIR-651 can securely access corporate networks.

•User-friendly SetupWizard -Through its easy-to-useWeb-based user interface, the DIR-651 lets you control what information is accessible to those on the wireless network, whether from the Internet or from your company’s server. Configure your router to your specific settings within minutes.

*Maximum wireless signal rate derived from IEEE Standard 802.11g and 802.11n specifications. Actual data throughput will vary. Network conditions and environmental factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput rate. Environmental conditions will adversely affect wireless signal range.

D-Link DIR-651 User Manual

Section 1 - Product Overview

Hardware Overview

Connections




		1	2	3	4

1	LAN Ports (1-4)	Connect Ethernet devices such as computers, switches, and hubs.
2	Internet Port	The auto MDI/MDIX Internet port is the connection for the Ethernet cable to the cable or DSL
2	Internet Port	modem.
		modem.
3	Power Receptor	Receptor for the supplied power adapter.

4	Reset	Press and hold the Reset button to restore the router to its original factory default settings.

D-Link DIR-651 User Manual

Section 1 - Product Overview

LEDs

1 2 3 4

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. A solid blue light
2	Internet LED	indicates that there is an Internet connection, an orange light indicates that there is none.

3	WLAN LED	A solid light indicates that the wireless segment is ready. This LED blinks during wireless data transmission.

4	Local Network’s	A solid light indicates a connection to an Ethernet-enabled computer on ports 1-4. This LED blinks during data
4	LED	transmission.
	LED	transmission.

D-Link DIR-651 User Manual

Section 2 - Installation

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.

Before you Begin

Please configure the router with the computer that was last connected directly to your modem. Also, 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 off 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 asWinPoet, Broadjump, or Enternet 300 from your computer or you will not be able to connect to the Internet.

D-Link DIR-651 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 that the number, thickness and location of walls, ceilings, or other objects that the wireless signals must pass through, may limit the range. Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in your home or business. The key to maximizing wireless range is to follow these basic guidelines:

1.Keep the number of walls and ceilings between the D-Link router and other network devices to a minimum - each wall or ceiling can reduce your adapter’s range from 3-90 feet (1-30 meters.) Position your devices so that the number of walls or ceilings is minimized.

2.Be aware of the direct line between network devices. A wall that is 1.5 feet thick (.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree angle it looks over 42 feet (14 meters) thick! Position devices so that the signal will travel straight through a wall or ceiling (instead of at an angle) for better reception.

3.Building Materials make a difference. A solid metal door or aluminum studs may have a negative effect on range. Try to position access points, wireless routers, and computers so that the signal passes through drywall or open doorways. Materials and objects such as glass, steel, metal, walls with insulation, water (fish tanks), mirrors, file cabinets, brick, and concrete will degrade your wireless signal.

4.Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that generate RF noise.

5.If you are using 2.4GHz cordless phones or X-10 (wireless products such as ceiling fans, lights, and home security systems), your wireless connection may degrade dramatically or drop completely. Make sure your 2.4GHz phone base is as far away from your wireless devices as possible. The base transmits a signal even if the phone in not in use.

D-Link DIR-651 User Manual

Section 2 - Installation

Getting Started

The DIR-651 includes a Quick Router Setup Wizard CD. Follow the simple steps below to run the Setup Wizard to guide you quickly through the installation process.

Insert the Quick Router Setup Wizard CD in the CD-ROM drive. The step-by-step instructions that follow are shown in Windows® XP. The steps and screens are similar for the other Windows operating systems.

If the CD Autorun function does not automatically start on your computer, go to Start > Run. In the run box type “D:\autorun.exe” (where D: represents the drive letter of your CD-ROM drive).

When the autorun screen appears, click Install.

Note: It is recommended to write down the SSID and Security Key, followed by the login password on the provided CD holder.

D-Link DIR-651 User Manual

Section 3 - Configuration

Configuration

This section will show you how to configure your new D-Link wireless router using the web-based configuration utility.

Web-based Configuration Utility

To access the configuration utility, open a web-browser such as

Internet Explorer and enter the IP address of the router (192.168.0.1).

You may also connect using the NetBIOS name in the address bar (http://dlinkrouter).

Select Admin from the drop-down menu and then enter your password. The password is left blank by default.

If you get a Page Cannot be Displayed error, please refer to the

Troubleshooting section for assistance.

D-Link DIR-651 User Manual

Section 3 - Configuration

Setup Wizard

Internet Connection

You may click Setup Wizard to quickly configure your router. Skip to the next page.

If you want to enter your settings without running the wizard, click Manual Configuration and skip to page 15.

Wireless Settings

Click Launch Internet Connection Setup Wizard to begin.

If you want to configure your wireless settings, click Launch Wireless Security Setup Wizard and skip to page 60.

To manually configure your wireless settings, click Manual Wireless Network Setup and skip to page 21.

D-Link DIR-651 User Manual

Section 3 - Configuration

Click Next to continue.

Create a new password and then click Next to continue.

Select your time zone from the drop-down menu and then click Next to continue.

Select the type of Internet connection you use and then click Next to continue.

D-Link DIR-651 User Manual

Section 3 - Configuration

If you selected Dynamic, 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.

If you selected PPPoE, enter your PPPoE username and password. Click Next to continue.

Select Static 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.

If you selected PPTP, enter your PPTP username and password. Click Next to continue.

D-Link DIR-651 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.

Click Connect to save your settings. Once the router is finished rebooting, click Continue. Please allow 1-2 minutes to connect.

Close your browser window and reopen it to test your Internet connection. It may take a few tries to initially connect to the Internet.

D-Link DIR-651 User Manual

Section 3 - Configuration

Manual Configuration

My Internet Select the type of Internet connection you have.

Connection is: Select Dynamic IP (DHCP), PPPoE, PPTP, L2TP, or Static. Refer to the next few pages for more information.

Enable When this option is enabled, the router will speed Hardware NAT: up NAT performance by hardware acceleration

mechanism.

Note: SPI and the QoS engine will be disabled automatically when hardware NAT is enabled.

D-Link DIR-651 User Manual

Section 3 - Configuration

Dynamic (Cable)

My Internet

Connection:

Host Name:

Use Unicasting:

Primary/

Secondary DNS

Server:

MTU:

MAC Address:

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 such as Comcast and Cox.

The Host Name is optional but may be required by some ISPs. Leave blank if you are not sure.

Check the box if you are having problems obtaining an IP address from your ISP.

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 specifically receive these from your ISP.

Maximum Transmission Unit - you may need to change the MTU for optimal performance with your specific 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.

D-Link DIR-651 User Manual

Section 3 - Configuration

Internet Setup

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.

My Internet Select PPPoE (Username/Password) from the drop-down menu.

Connection:

Address Mode: Select Static if your ISP assigned you the IP address, subnet mask, gateway, and DNS server addresses. In most cases, select Dynamic.

IP Address: Enter the IP address (Static PPPoE only).

User Name: Enter your PPPoE user name.

Password: Enter your PPPoE password and then retype the password in the next box.

Service Name: Enter the ISP Service Name (optional).

Reconnection Select either Always-on, On-Demand, or Manual.

Mode:

Maximum Idle Enter a maximum idle time during which the Internet connection is maintained during inactivity. To disable this feature, enable Time: Auto-reconnect.

DNS Addresses: Enter the Primary and Secondary DNS Server Addresses (Static PPPoE only).

MTU: Maximum Transmission Unit - you may need to change the MTU for optimal performance with your specific ISP. 1492 is the default

MTU.

MAC Address: 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.

D-Link DIR-651 User Manual

Section 3 - Configuration

PPTP

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.

Address Mode: Select Static if your ISP assigned you the IP address, subnet

mask, gateway, and DNS server addresses. In most cases, select

Dynamic.

PPTP IP Address: Enter the IP address (Static PPTP only).

PPTP Subnet Enter the Primary and Secondary DNS Server Addresses (Static

Mask: PPTP only).

PPTP Gateway: Enter the Gateway IP Address provided by your ISP.

PPTP Server IP: Enter the Server IP provided by your ISP (optional).

Username: Enter your PPTP username.

Password: Enter your PPTP password and then retype the password in the next box.

Reconnect Mode: Select either Always-on, On-Demand, or Manual.

Maximum Idle Enter a maximum idle time during which the Internet connection

Time: is maintained during inactivity. To disable this feature, enable

Auto-reconnect.

DNS Servers: The DNS server information will be supplied by your ISP (Internet Service Provider.)

MTU: MaximumTransmission Unit - you may need to change the MTU for optimal performance with your specific ISP. 1400 is the default MTU.

MAC Address: 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 CloneYour PC’s MAC Address button to replace

the Internet port’s MAC address with the MAC address of your Ethernet card.

D-Link DIR-651 User Manual

Section 3 - Configuration

L2TP

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.

Address Mode: Select Static if your ISP assigned you the IP address, subnet mask, gateway, and DNS server addresses. In most cases, select Dynamic.

L2TP IP Address: Enter the L2TP IP address supplied by your ISP (Static only).

L2TP Subnet Enter the Subnet Mask supplied by your ISP (Static only).

Mask:

L2TP Gateway: Enter the Gateway IP Address provided by your ISP.

L2TP Server IP: Enter the Server IP provided by your ISP (optional).

Username: Enter your L2TP username.

Password: Enter your L2TP password and then retype the password in the next box.

Reconnect Mode: Select either Always-on, On-Demand, or Manual.

Maximum Idle Enter a maximum idle time during which the Internet connection is maintained during inactivity. To disable this feature, enable Auto- Time: reconnect.

DNS Servers: Enter the Primary and Secondary DNS Server Addresses (Static L2TP only).

MTU: Maximum Transmission Unit - you may need to change the MTU for optimal performance with your specific ISP. 1400 is the default MTU.

Clone MAC The default MAC Address is set to the Internet port’s physical interface MAC address on the Broadband Router. It is not recommended Address: that you change the default MAC address unless required by your ISP.You can use the CopyYour PC’s MAC Address button to replace

the Internet port’s MAC address with the MAC address of your Ethernet card.

D-Link DIR-651 User Manual

Section 3 - Configuration

Static (assigned by ISP)

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 fields 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.

IP Address: Enter the IP address assigned by your ISP.

Subnet Mask: Enter the Subnet Mask assigned by your ISP.

Default Gateway: Enter the Gateway assigned by your ISP.

DNS Servers: The DNS server information will be supplied by your ISP (Internet

Service Provider.)

MTU: Maximum Transmission Unit - you may need to change the MTU for optimal performance with your specific ISP. 1500 is the default MTU.

MAC Address: 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.

D-Link DIR-651 User Manual

Section 3 - Configuration

Wireless Settings

Enable Wireless:

Schedule:

Wireless Network

Name:

Enable Auto

Channel Scan:

Wireless

Channel:

802.11 Mode:

Channel Width:

Transmission

Rate:

Visibility Status:

Check the box to enable the wireless function. If you do not want to use wireless, uncheck the box to disable all the wireless functions.

The schedule of time when the wireless settings rules will be enabled. The schedule may be set to Always, which will allow the particular service to always be enabled. You can create your own times in the

Tools > Schedules section.

Service Set Identifier (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-651 to choose the channel with the least amount of interference.

Indicates the channel setting for the DIR-651. By default the channel is set to 6. The Channel can be changed to fit the channel setting for

an existing wireless network or to customize the wireless network. If you enable Auto Channel Scan, this option will be greyed out.

Select one of the following:

802.11g Only - Select if all of your wireless clients are 802.11g. 802.11n Only - Select only if all of your wireless clients are 802.11n.

Mixed 802.11n and 802.11g - Select if you are using a mix of 802.11n and 11g wireless clients.

Select the Channel Width:

Auto 20/40 - This is the default setting. Select if you are using both 802.11n and non-802.11n wireless devices. 20MHz - Select if you are not using any 802.11n wireless clients.

40MHz - Select if using only 802.11n wireless clients.

Select the transmit rate. It is strongly suggested to select Best (Auto) for best performance.

Select Invisible if you do not want the SSID of your wireless network to be broadcasted by the DIR-651. If Invisible is selected, the SSID of the DIR-651 will not be seen by Site Survey utilities so your wireless clients will have to know the SSID of your DIR-651

D-Link DIR-651 User Manual

Section 3 - Configuration

Network Settings

This section will allow you to change the local network settings of the router and to configure the DHCP settings.

Router IP Address: 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 Apply, you will need to enter the new IP address in your browser to get back into the configuration utility.

Subnet Mask: Enter the Subnet Mask. The default subnet mask is 255.255.255.0.

Device Name: Enter a name for the router.

Local Domain: Enter the Domain name (Optional).

Enable DNS Relay: Uncheck the box to transfer the DNS server information from your ISP to your computers. If checked, your computers will use the router for a DNS server.

D-Link DIR-651 User Manual

Section 3 - Configuration

DHCP Server Settings

DHCP stands for Dynamic Host Control Protocol. The DIR-651 has a built-in DHCP server. The DHCP Server will automatically assign an IP address to the computers on the LAN/private network. Be sure to set your computers to be DHCP clients by setting their TCP/IP settings to “Obtain an IP Address Automatically.” When you turn your computers on, they will automatically load the proper TCP/IP settings provided by the DIR-651. The DHCP Server will automatically allocate an unused IP address from the IP address pool to the requesting computer. You must specify the starting and ending address of the IP address pool.

Enable DHCP	Check this box to enable the DHCP server on your router.
Enable DHCP	Check this box to enable the DHCP server on your router.
Server:	Uncheck to disable this function.
DHCP IP Address	Enter the starting and ending IP addresses for the DHCP
Range: 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 conflict.
DHCP Lease Time: The length of time for the IP address lease. Enter the
	Lease time in minutes.
Always Broadcast: Enable this feature to broadcast your networks DHCP
	server to LAN/WLAN clients.
NetBIOS	NetBIOS allows LAN hosts to discover all other computers
Announcement: within the network, enable this feature to allow the DHCP
	Server to offer NetBIOS configuration settings.
Learn NetBIOS	Enable this feature to allow WINS information to be learned from the WAN side, disable to allow manual configuration.
from WAN:

NetBIOS Scope: This feature allows the configuration of a NetBIOS ‘domain’ name under which network hosts operates. This setting has no effect

		if the ‘Learn NetBIOS information from WAN’ is activated.”
NetBIOS Mode		Select the different type of NetBIOS node: Broadcast only, Point-to-Point, Mixed-mode, and Hybrid.
	Type:
	Primary/	Enter your Primary (and Secondary) WINS IP address(es).
Secondary WINS IP
	Address:
	D-Link DIR-651 User Manual		23

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.

Note: This IP address must be within the DHCP IP Address Range.

Enable: Check this box to enable the reservation.

Computer Name: Enter the computer name or select from the drop-down menu and click <<.

IP Address: Enter the IP address you want to assign to the computer or device. This IP Address must be within the DHCP IP Address Range.

MAC Address: Enter the MAC address of the computer or device.

Copy Your PC’s If you want to assign an IP address to the computer you are

MAC Address: currently on, click this button to populate the fields.

Save: Click Save to save your entry. You must click Save Settings at the top to activate your reservations.

Number of In this section you can see what LAN devices are currently

Dynamic DHCP leasing IP addresses.

Clients:

Revoke: Click Revoke to cancel the lease for a specific LAN device and free an entry in the lease table. Do this only if the device no longer needs the leased IP address, because, for example, it has been removed from the network.

Note: The Revoke option will not disconnect a PC with a current network session from the network; you would need to use MAC Address Filter to do that. Revoke will only free up a DHCP Address for the very next requester. If the previous owner is still available, those two devices may both receive an IP Address Conflict error, or the second device may still not receive an IP Address; in that case, you may still need to extend the “DHCP IP Address Range” to address the issue which is located in the DHCP Server section.

Reserve: The Reserve option converts this dynamic IP allocation into a DHCP Reservation and adds the corresponding entry to the DHCP Reservations List.

D-Link DIR-651 User Manual

Section 3 - Configuration

Virtual Server

The DIR-651 can be configured as a virtual server so that remote users accessing Web or FTP services via the public IP address can be automatically redirected to local servers in the LAN (Local Area Network).

The DIR-651 firewall feature filters out unrecognized packets to protect your LAN network so all computers networked with the DIR-651 are invisible to the outside world. If you wish, you can make some of the LAN computers accessible from the Internet by enabling Virtual Server. Depending on the requested service, the DIR-651 redirects the external service request to the appropriate server within the LAN network.

The DIR-651 is also capable of port-redirection meaning incoming traffic to a particular port may be redirected to a different port on the server computer.

Each virtual service that is created will be listed at the bottom of the screen in the Virtual Servers List. There are pre-defined virtual services already in the table. You may use them by enabling them and assigning the server IP to use that particular virtual service.

D-Link DIR-651 User Manual

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