Netgear WGR614v7 Handleiding
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April 2006
April 2006
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
54 Mbps Wireless Router
WGR614v7 Reference
Manual
ii
April 2006
© 2006 by NETGEAR, Inc. All rights reserved. April 2006.
Trademarks
NETGEAR is a trademark of Netgear, Inc.
Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Other brand and product names are registered trademarks or trademarks of their respective holders.
Statement of Conditions
In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to
make changes to the products described in this document without notice.
NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit
layout(s) described herein.
Wireless Communications
Maximum Wireless signal rate derived from IEEE Standard 802.11 specifications. Actual 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.
Federal Communications Commission (FCC) Compliance Notice: Radio
Frequency Notice
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 o and on, the user is encouraged to try
to correct the interference by one or more 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.
EN 55 022 Declaration of Conformance
This is to certify that the 54 Mbps Wireless Router WGR614v7 is shielded against the generation of radio interference in
accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by the application
of EN 55 022 Class B (CISPR 22).
April 2006
iii
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das 54 Mbps Wireless Router WGR614v7 gemäß der im BMPT-AmtsblVfg 243/1991 und
Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschrifts Geräte (z.B. Testsender) mäßige Betreiben einiger
kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung.
Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt
gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.
Certificate of the Manufacturer/Importer
It is hereby certied that the 54 Mbps Wireless Router WGR614v7 has been suppressed in accordance with the
conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example,
test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please refer to the
notes in the operating instructions.
Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market
and has been granted the right to test the series for compliance with the regulations.
Voluntary Control Council for Interference (VCCI) Statement
This equipment is in the second category (information equipment to be used in a residential area or an adjacent area
thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing
Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas.
When used near a radio or TV receiver, it may become the cause of radio interference.
Read instructions for correct handling.
MIC Compliance, “Class B” Equipment (Household purpose info/tele-
communications equipment)
As this equipment has undergone EMC registration for household purposes, this product can be used in any area
including residential areas.
Customer Support
Refer to the Support Information Card that shipped with your 54 Mbps Wireless Router WGR614v7.
World Wide Web:
NETGEAR maintains a World Wide Web home page that you can access at the universal resource locator (URL) http://
www.netgear.com. A direct connection to the Internet and a Web browser such as Internet Explorer or Netscape are
required.
April 2006
iv
Product and Publication Details
Model Number: WGR614v7
Publication Date: April 2006
Product Family: router
Product Name: 54 Mbps Wireless Router WGR614v7
Home or Business Product: Home
Language: English
Publication Part Number:
Contents v
April 2006
Contents
Chapter 1
About This Manual
Audience, Scope, Conventions, and Formats ................................................................1-1
How to Use This Manual ................................................................................................1-2
How to Print this Manual .................................................................................................1-3
Chapter 2
Introduction
Key Features ..................................................................................................................2-1
802.11g Wireless Networking ...................................................................................2-2
A Powerful, True Firewall with Content Filtering ......................................................2-2
Security ....................................................................................................................2-3
Autosensing Ethernet Connections with Auto Uplink ...............................................2-3
Extensive Protocol Support ......................................................................................2-3
Easy Installation and Management ..........................................................................2-4
Maintenance and Support ........................................................................................2-5
Package Contents ..........................................................................................................2-5
The Router’s Front Panel .........................................................................................2-6
The Router’s Rear Panel .........................................................................................2-7
Chapter 3
Configuring the Internet and Wireless Settings
Initial Configuration .........................................................................................................3-1
Logging Into Your Router ................................................................................................3-2
Changing Your Configuration ..........................................................................................3-4
Internet Settings .......................................................................................................3-4
Wireless Settings .....................................................................................................3-8
Default Factory Settings ...............................................................................................3-10
How to Bypass the Configuration Assistant .................................................................. 3-11
NETGEAR Product Registration, Support, and Documentation ................................... 3-11
April 2006
vi Contents
Chapter 4
Content Filtering
Content Filtering Overview .............................................................................................4-1
Blocking Access to Internet Sites ...................................................................................4-2
Blocking Access to Internet Services .............................................................................4-3
Configuring a User Defined Service .........................................................................4-4
Configuring Services Blocking by IP Address Range ..............................................4-5
Scheduling When Blocking Will Be Enforced .................................................................4-5
Viewing Logs of Web Access or Attempted Web Access ...............................................4-6
Configuring E-Mail Alert and Web Access Log Notifications ..........................................4-7
Chapter 5
Maintenance
Viewing Wireless Router Status Information ...................................................................5-1
Viewing a List of Attached Devices .................................................................................5-5
Configuration File Management .....................................................................................5-5
Restoring and Backing Up the Configuration ...........................................................5-6
Erasing the Configuration .........................................................................................5-7
Upgrading the Router Software ......................................................................................5-7
Changing the Administrator Password ...........................................................................5-8
Chapter 6
Advanced Configuration of the Router
Configuring Port Triggering .............................................................................................6-1
Configuring Port Forwarding to Local Servers ................................................................6-3
Adding a Custom Service .........................................................................................6-5
Editing or Deleting a Port Forwarding Entry .............................................................6-5
Local Web and FTP Server Example .......................................................................6-6
Multiple Computers for Half Life, KALI or Quake III Example ..................................6-6
Configuring the WAN Setup Options ..............................................................................6-7
Connect Automatically, as Required ........................................................................6-7
Disabling the SPI Firewall ........................................................................................6-8
Setting Up a Default DMZ Server .............................................................................6-8
Responding to Ping on Internet WAN Port ...............................................................6-8
Setting the MTU Size ...............................................................................................6-9
Using the LAN IP Setup Options ....................................................................................6-9
Configuring LAN TCP/IP Setup Parameters ..........................................................6-10
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April 2006
Using the Router as a DHCP server ...................................................................... 6-11
Using Address Reservation ....................................................................................6-12
Using a Dynamic DNS Service .....................................................................................6-13
Configuring Static Routes .............................................................................................6-14
Enabling Remote Management Access .......................................................................6-16
Using Universal Plug and Play (UPnP) ........................................................................6-18
Chapter 7
Troubleshooting
Basic Functioning ...........................................................................................................7-1
Power Light Not On ..................................................................................................7-1
Lights Never Turn Off ...............................................................................................7-2
LAN or WAN Port Lights Not On ..............................................................................7-2
Troubleshooting the Web Configuration Interface ..........................................................7-3
Troubleshooting the ISP Connection ..............................................................................7-4
Troubleshooting a TCP/IP Network Using a Ping Utility .................................................7-5
Testing the LAN Path to Your Router .......................................................................7-5
Testing the Path from Your Computer to a Remote Device .....................................7-6
Restoring the Default Configuration and Password ........................................................7-7
Problems with Date and Time .........................................................................................7-7
Appendix A
Technical Specifications
Appendix B
Network, Routing, Firewall, and Basics
Related Publications ...................................................................................................... B-1
Basic Router Concepts .................................................................................................. B-1
What is a Router? ................................................................................................... B-1
Routing Information Protocol ................................................................................... B-2
IP Addresses and the Internet ....................................................................................... B-2
Netmask .................................................................................................................. B-4
Subnet Addressing .................................................................................................. B-4
Private IP Addresses ............................................................................................... B-7
Single IP Address Operation Using NAT ....................................................................... B-7
MAC Addresses and Address Resolution Protocol ................................................. B-8
Related Documents ................................................................................................. B-9
Domain Name Server .............................................................................................. B-9
April 2006
viii Contents
IP Configuration by DHCP ........................................................................................... B-10
Internet Security and Firewalls .................................................................................... B-10
What is a Firewall? ................................................................................................ B-10
Stateful Packet Inspection ...............................................................................B-11
Denial of Service Attack ..................................................................................B-11
Ethernet Cabling ...........................................................................................................B-11
Category 5 Cable Quality ...................................................................................... B-12
Inside Twisted Pair Cables .................................................................................... B-12
Uplink Switches, Crossover Cables, and MDI/MDIX Switching ............................ B-14
Appendix C
Preparing Your Network
What You Need To Use a Router with a Broadband Modem ......................................... C-1
Cabling and Computer Hardware ............................................................................ C-1
Computer Network Configuration Requirements .................................................... C-1
Internet Configuration Requirements ...................................................................... C-2
Where Do I Get the Internet Configuration Parameters? ........................................ C-2
Record Your Internet Connection Information ......................................................... C-3
Preparing Your Computers for TCP/IP Networking ....................................................... C-3
Configuring Windows 95, 98, and Me for TCP/IP Networking ....................................... C-4
Install or Verify Windows Networking Components ................................................. C-4
Enabling DHCP to Automatically Configure TCP/IP Settings in Windows 95B, 98, and Me
C-6
Selecting Windows’ Internet Access Method .......................................................... C-8
Verifying TCP/IP Properties .................................................................................... C-8
Configuring Windows NT4, 2000 or XP for IP Networking ............................................ C-9
Install or Verify Windows Networking Components ................................................. C-9
DHCP Configuration of TCP/IP in Windows XP, 2000, or NT4 ............................. C-10
DHCP Configuration of TCP/IP in Windows XP ................................................... C-10
DHCP Configuration of TCP/IP in Windows 2000 ................................................ C-12
DHCP Configuration of TCP/IP in Windows NT4 .................................................. C-15
Verifying TCP/IP Properties for Windows XP, 2000, and NT4 .............................. C-17
Configuring the Macintosh for TCP/IP Networking ...................................................... C-18
MacOS 8.6 or 9.x .................................................................................................. C-18
MacOS X ............................................................................................................... C-18
Verifying TCP/IP Properties for Macintosh Computers ......................................... C-19
Verifying the Readiness of Your Internet Account ....................................................... C-20
Contents ix
April 2006
Are Login Protocols Used? ................................................................................... C-20
What Is Your Configuration Information? .............................................................. C-20
Obtaining ISP Configuration Information for Windows Computers ....................... C-21
Obtaining ISP Configuration Information for Macintosh Computers ..................... C-22
Restarting the Network ................................................................................................ C-23
Appendix D
Wireless Networking Basics
Wireless Networking Overview ...................................................................................... D-1
Infrastructure Mode ................................................................................................. D-1
Ad Hoc Mode (Peer-to-Peer Workgroup) ................................................................ D-2
Network Name: Extended Service Set Identification (ESSID) ................................ D-2
Authentication and WEP Data Encryption ..................................................................... D-2
802.11 Authentication .............................................................................................. D-3
Open System Authentication ................................................................................... D-3
Shared Key Authentication ...................................................................................... D-4
Overview of WEP Parameters ................................................................................ D-5
Key Size .................................................................................................................. D-6
WEP Configuration Options .................................................................................... D-7
Wireless Channels ......................................................................................................... D-7
WPA and WPA2 Wireless Security ................................................................................ D-8
How Does WPA Compare to WEP? ........................................................................ D-9
How Does WPA Compare to WPA2 (IEEE 802.11i)? ............................................ D-10
What are the Key Features of WPA and WPA2 Security? .................................... D-10
WPA/WPA2 Authentication: Enterprise-level User
Authentication via 802.1x/EAP and RADIUS .................................................. D-12
WPA/WPA2 Data Encryption Key Management ............................................. D-14
Is WPA/WPA2 Perfect? ......................................................................................... D-16
Product Support for WPA/WPA2 ........................................................................... D-16
Supporting a Mixture of WPA, WPA2, and WEP Wireless Clients is Discouraged D-16
Changes to Wireless Access Points ............................................................... D-17
Changes to Wireless Network Adapters ......................................................... D-17
Changes to Wireless Client Programs ............................................................ D-18
Glossary
April 2006
x Contents
54 Mbps Wireless Router WGR614v7 Reference Manual
1-2 About This Manual
April 2006
How to Use This Manual
The HTML version of this manual includes the following:
• Buttons, and , for browsing forwards or backwards through the manual one page
at a time
• A button that displays the table of contents and an button. Double-click on a
link in the table of contents or index to navigate directly to where the topic is described in the
manual.
• A button to access the full NETGEAR, Inc. online knowledge base for the
product model.
• Links to PDF versions of the full manual and individual chapters.
54 Mbps Wireless Router WGR614v7 Reference Manual
About This Manual 1-3
April 2006
How to Print this Manual
To print this manual you can choose one of the following several options, according to your needs.
•Printing a Page in the HTML View.
Each page in the HTML version of the manual is dedicated to a major topic. Use the Print
button on the browser toolbar to print the page contents.
•Printing a Chapter.
Use the PDF of This Chapter link at the top left of any page.
– Click the PDF of This Chapter link at the top right of any page in the chapter you want to
print. The PDF version of the chapter you were viewing opens in a browser window.
Note: Your computer must have the free Adobe Acrobat reader installed in order to view
and print PDF files. The Acrobat reader is available on the Adobe Web site at
http://www.adobe.com.
– Click the print icon in the upper left of the window.
Tip: If your printer supports printing two pages on a single sheet of paper, you can save
paper and printer ink by selecting this feature.
•Printing the Full Manual.
Use the Complete PDF Manual link at the top left of any page.
– Click the Complete PDF Manual link at the top left of any page in the manual. The PDF
version of the complete manual opens in a browser window.
– Click the print icon in the upper left of the window.
Tip: If your printer supports printing two pages on a single sheet of paper, you can save
paper and printer ink by selecting this feature.
54 Mbps Wireless Router WGR614v7 Reference Manual
1-4 About This Manual
April 2006
Introduction 2-1
April 2006
Chapter 2
Introduction
Congratulations on your purchase of the NETGEAR® 54 Mbps Wireless Router WGR614v7. The
wireless router provides connection for multiple computers to the Internet through an external
broadband access device (such as a cable modem or DSL modem) that is normally intended for use
by a single computer. This chapter describes the features of the NETGEAR 54 Mbps Wireless
Router WGR614v7.
Key Features
The 54 Mbps Wireless Router WGR614v7 with 4-port switch connects your local area network
(LAN) to the Internet through an external access device such as a cable modem or DSL modem.
The wireless router provides you with multiple Web content filtering options, plus browsing
activity reporting and instant alerts via e-mail. Parents and network administrators can establish
restricted access policies based on time-of-day, Web site addresses and address keywords, and
share high-speed cable/DSL Internet access for up to 253 computers. In addition to the Network
Address Translation (NAT) feature, the built-in firewall protects you from hackers.
With minimum setup, you can install and use the router within minutes.
The wireless router provides the following features:
• 802.11g wireless networking, with the ability to operate in 802.11 b-only, 802.11g-only, or
802.11b+g modes.
• Easy, Web-based setup for installation and management.
• Content Filtering and Site Blocking Security.
• Built in 4-port 10/100 Mbps Switch.
• Ethernet connection to a wide area network (WAN) device, such as a cable modem or DSL
modem.
• Extensive Protocol Support.
• Login capability.
• Front panel LEDs for easy monitoring of status and activity.
54 Mbps Wireless Router WGR614v7 Reference Manual
2-2 Introduction
April 2006
• Flash memory for firmware upgrades.
802.11g Wireless Networking
The wireless router includes an 802.11g wireless access point, providing continuous, high-speed
54 Mbps access between your wireless and Ethernet devices. The access point provides:
• 802.11g wireless networking at up to 54 Mbps.
• 802.11g wireless networking, with the ability to operate in 802.11g-only, 802.11b-only, or
802.11g and b modes, providing backwards compatibility with 802.11b devices or dedicating
the wireless network to the higher bandwidth 802.11g devices.
• 64-bit and 128-bit WEP encryption security.
• WEP keys can be generated manually or by passphrase.
• WPA-PSK support. Support for Wi-Fi Protected Access (WPA) data encryption which
provides strong data encryption and authentication based on a pre-shared key.
• Wireless access can be restricted by MAC address.
• Wireless network name broadcast can be turned off so that only devices that have the network
name (SSID) can connect.
A Powerful, True Firewall with Content Filtering
Unlike simple Internet sharing NAT routers, the WGR614v7 is a true firewall, using stateful
packet inspection to defend against hacker attacks. Its firewall features include:
• Denial of Service (DoS) protection.
Automatically detects and thwarts DoS attacks such as Ping of Death, SYN Flood, LAND
Attack, and IP Spoofing.
• Blocks unwanted traffic from the Internet to your LAN.
• Blocks access from your LAN to Internet locations or services that you specify as off-limits.
• Logs security incidents.
The WGR614v7 will log security events such as blocked incoming traffic, port scans, attacks,
and administrator logins. You can configure the router to E-mail the log to you at specified
intervals. You can also configure the router to send immediate alert messages to your E-mail
address or E-mail pager whenever a significant event occurs.
54 Mbps Wireless Router WGR614v7 Reference Manual
Introduction 2-3
April 2006
• The WGR614v7 prevents objectionable content from reaching your computers. The router
allows you to control access to Internet content by screening for keywords within Web
addresses. You can configure the router to log and report attempts to access objectionable
Internet sites.
Security
The wireless router is equipped with several features designed to maintain security, as described in
this section.
• Computers Hidden by NAT
NAT opens a temporary path to the Internet for requests originating from the local network.
Requests originating from outside the LAN are discarded, preventing users outside the LAN
from finding and directly accessing the computers on the LAN.
• Port Forwarding with NAT
Although NAT prevents Internet locations from directly accessing the computers on the LAN,
the router allows you to direct incoming traffic to specific computers based on the service port
number of the incoming request, or to one designated “DMZ” host computer. You can specify
forwarding of single ports or ranges of ports.
Autosensing Ethernet Connections with Auto Uplink
With its internal 4-port 10/100 switch, the WGR614v7 can connect to either a 10 Mbps standard
Ethernet network or a 100 Mbps Fast Ethernet network. Both the LAN and WAN interfaces are
autosensing and capable of full-duplex or half-duplex operation.
The router incorporates Auto UplinkTM technology. Each Ethernet port will automatically sense
whether the Ethernet cable plugged into the port should have a ‘normal’ connection such as to a
computer or an ‘uplink’ connection such as to a switch or hub. That port will then configure itself
to the correct configuration. This feature also eliminates the need to worry about crossover cables,
as Auto Uplink will accommodate either type of cable to make the right connection.
Extensive Protocol Support
The wireless router supports the Transmission Control Protocol/Internet Protocol
(TCP/IP) and Routing Information rmation about TCP/IP, refer to Protocol (RIP). For further info
Appendix B, “Network, Routing, Firewall, and Basics.”
54 Mbps Wireless Router WGR614v7 Reference Manual
Introduction 2-5
April 2006
• Visual monitoring
The wireless router’s front panel LEDs provide an easy way to monitor its status and activity.
Maintenance and Support
NETGEAR offers the following features to help you maximize your use of the wireless router:
• Flash memory for firmware upgrades.
• Free technical support seven days a week, twenty-four hours a day, for 90 days from the date
of purchase.
Package Contents
The product package should contain the following items:
• 54 Mbps Wireless Router WGR614v7.
• AC power adapter.
• Vertical stand.
• Category 5 (CAT5) Ethernet cable.
• Resource CD, including:
— This guide.
— The Installation Guide.
— Application Notes and other helpful information.
• .
• Registration, Warranty Card, and Support Information Card.
If any of the parts are incorrect, missing, or damaged, contact your NETGEAR dealer. Keep the
carton, including the original packing materials, in case you need to return the router for repair.
54 Mbps Wireless Router WGR614v7 Reference Manual
2-6 Introduction
April 2006
The Router’s Front Panel
The front panel of the wireless router contains the status lights described below.
Figure 2-1: WGR614v7 Front Panel
You can use the status lights to verify connections. Viewed from left to right, the table below
describes the lights on the front panel of the router.
Table 2-1. Status Light Descriptions
Label Activity Description
Power On Amber Blinking
On Green Solid
Off
Solid Amber
Power is supplied to the router and it is performing its diagnostic test.
Power is supplied and the router it has passed its diagnostic test.
Power is not supplied to the router.
The router has failed its diagnostic test.
Test On
Off
The unit is performing the power on self test diagnostic.
The unit successfully completed the power on self test diagnostic.
Wireless On
Off
The Wireless port is initialized and the wireless feature is enabled.
The wireless feature is turned off or there is a problem.
Internet On
Blink
The Internet port has detected a link with an attached device.
Data is being transmitted or received by the Internet port.
LAN On (Green)
Blink (Green)
On (Amber)
Blink (Amber)
Off
The LAN (local area network) port has detected link with a 100 Mbps
device.
Data is being transmitted or received at 100 Mbps.
The Local port has detected link with a 10 Mbps device.
Data is being transmitted or received at 10 Mbps.
No link is detected on this port.
0OWER )NTERNET0ORT
7IRELESS ,!.0ORT4EST
54 Mbps Wireless Router WGR614v7 Reference Manual
Introduction 2-7
April 2006
The Router’s Rear Panel
The rear panel of the WGR614v7 router contains the items listed below.
Figure 1-2: WGR614v7 Rear Panel
Viewed from left to right, the rear panel contains the following features:
• AC power adapter outlet for 12 V DC @ 1A output, 22W maximum
• Four Local (LAN) 10/100 Mbps Ethernet ports for connecting the router to the local
computers
• Internet (WAN) Ethernet port for connecting the router to a cable or DSL modem
• Factory Default Reset push button for Restoring the Default Configuration and Password
• Wireless antenna
Power 4 LAN Ports Internet Port
Reset
Wireless
4 3 2 1
Antenna
Button
54 Mbps Wireless Router WGR614v7 Reference Manual
2-8 Introduction
April 2006
Configuring the Internet and Wireless Settings 3-1
April 2006
Chapter 3
Configuring the Internet and Wireless Settings
This chapter describes how to use the Smart Wizard Installation Assistant on the Resource CD to
configure your wireless router’s Internet connection and wireless parameters.
Once you are connected to the Internet and your wireless connections are working, you can also
configure the router’s content filtering parameters if you need to change the default settings. See
Chapter 4, “Content Filtering.
If you are an advanced user, you can also configure maintenance (see Chapter 5, “Maintenance)
and advanced (see Chapter 6, “Advanced Configuration of the Router) settings if you need to
change the factory defaults.
Initial Configuration
1. Insert the Resource CD into the CD drive on your PC.
2. Click Setup and follow the instructions. The Smart Wizard Installation Assistant will guide
you through the setup process:
• How to change your cabling.
• How to connect to the Internet.
• How to configure your wireless settings.
If you want to change your Internet or wireless settings later, see “Changing Your
Configuration” on page 3-4.
Note: Do not change your existing Internet connection. Instead, let the Smart Wizard
Installation Assistant on the Resource CD guide you through the setup process.
54 Mbps Wireless Router WGR614v7 Reference Manual
3-2 Configuring the Internet and Wireless Settings
April 2006
Logging Into Your Router
To log into your router after you have configured your router, do the following:
1. Type http://www.routerlogin.net in the address field of Internet Explorer or Netscape®
Navigator.
Figure 3-1: Log in to the router
2. When prompted, enter admin
for the router user name and password for the router password,
both in lower case letters (or enter the password you chose if you changed it during the setup
in “Initial Configuration” on page 3-1).
Note: The router user name and password are not the same as any user name or password you
may use to log in to your Internet connection.
A login window like the one shown below opens:
Figure 3-2: Login window
54 Mbps Wireless Router WGR614v7 Reference Manual
Configuring the Internet and Wireless Settings 3-3
April 2006
3. Click OK and the resulting window below appears:
Figure 3-3: Login result
54 Mbps Wireless Router WGR614v7 Reference Manual
3-6 Configuring the Internet and Wireless Settings
April 2006
If you have a fixed (static, permanent) IP address, your ISP will have provided you with an IP
address. Select Use static IP address and type in the IP Address.
• Account Name (also known as Host Name or System Name): For most users, type your
account name or user name in this box. For example, if your main mail account is
JerAB@ISP.com, then put JerAB in this box.
If your ISP has given you a specific Host name, then type it (for example, CCA7324-A).
• Domain Name: For most users, you may leave this box blank, unless required by your ISP.
You may type the domain name of your ISP. For example, if your ISP's mail server is
mail.xxx.yyy.zzz, you would type xxx.yyy.zzz as the Domain Name.
If you have a Domain name given to you by your ISP, type it in this box. (For example,
Earthlink Cable may require a Host name of 'home' and Comcast sometimes supplies a
Domain name.)
If you have a cable modem, this is usually the Workgroup name.
• Internet IP Address: If you log in to your service or your ISP did not provide you with a
fixed IP address, the router will find an IP address for you automatically when you connect.
Select Get Dynamically From ISP.
If you have a fixed (or static IP) address, your ISP will have provided you with the required
information. Select Use Static IP Address and type the IP Address, Subnet Mask and Gateway
IP Address into the correct boxes.
For example:
IP Address: 24.218.156.183
Subnet Mask: 255.255.255.0
Gateway IP Address: 24.218.156.1
• Domain Name Server (DNS) Address: The DNS server is used to look up site addresses
based on their names.
If your ISP gave you one or two DNS addresses, select Use These DNS Servers and type the
primary and secondary addresses.
Otherwise, select Get Automatically From ISP.
Note: If you get 'Address not found' errors when you go to a Web site, it is likely that your
DNS servers aren't set up properly. You should contact your ISP to get DNS server addresses.
• Router MAC Address: Your computer's local address is its unique address on your network.
This is also referred to as the computer's MAC (Media Access Control) address.
54 Mbps Wireless Router WGR614v7 Reference Manual
Configuring the Internet and Wireless Settings 3-7
April 2006
Usually, select Use Default MAC Address.
If your ISP requires MAC authentication, then select either Use Computer MAC address to
disguise the Router's MAC address with the Computer's own MAC address or Use This MAC
Address to manually type the MAC address for a different computer. The format for the MAC
address is XX:XX:XX:XX:XX:XX. This value may be changed if the Use Computer MAC
Address is selected once a value has already been set in the Use This MAC Address selection.
Click Test to connect to the NETGEAR Web site. If you connect successfully, your settings work
and you may click Logout to exit these pages and... enjoy surfing the 'net!
If you don't connect successfully,
1. Go through the settings and make sure you've selected the correct options and typed
everything correctly.
2. Contact your ISP to verify the configuration information.
3. Read the Troubleshooting section in the Router Installation Guide.
4. On the Router GearBox CD, read the Troubleshooting Guide or the Troubleshooting section in
the Reference Manual.
5. Contact NETGEAR Technical Support.
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3-8 Configuring the Internet and Wireless Settings
April 2006
Wireless Settings
To change the Internet settings, click Wireless Settings on the left menu bar. One of the following
screens appears:
Figure 3-5: Wireless Settings screens
NOTE: To ensure proper agency compliance and compatibility between similar products in your
area; the operating channel & region must be set correctly.
• Placement of the Router to Optimize Wireless Connectivity: The operating distance or
range of your wireless connection can vary significantly based on the physical placement of
the router. For best results, place your router:
– Near the center of the area in which your PCs will operate
– In an elevated location such as a high shelf
– Away from potential sources of interference, such as PCs, microwaves, and cordless
phones
– With the Antenna tight and in the upright position
– Away from large metal surfaces
Wireless Settings:
No security
Wireless Settings:
WEP security
Wireless Settings:
WPA-PSK security
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Configuring the Internet and Wireless Settings 3-9
April 2006
Note: Failure to follow these guidelines can result in significant performance degradation or
inability to wirelessly connect to the router.
• Name (SSID): Enter a value of up to 32 alphanumeric characters. The same Name (SSID)
must be assigned to all wireless devices in your network. The default SSID is NETGEAR, but
NETGEAR strongly recommends that you change your network's Name (SSID) to a different
value. This value is also case-sensitive. For example, NETGEAR is not the same as
NETGEAr.
• Region: Select your region from the drop-down list. This field displays the region of operation
for which the wireless interface is intended. It may not be legal to operate the router in a region
other than the region shown here. If your country or region is not listed, please check with
your local government agency or check our web site for more information on which channels
to use.
• Channel: This field determines which operating frequency will be used. It should not be
necessary to change the wireless channel unless you notice interference problems with another
nearby access point.
• Mode: Select the desired wireless mode. The options are:
– g & b: Both 802.11g and 802.11b wireless stations can be used.
– g only: Only 802.11g wireless stations can be used.
– b only: All 802.11b wireless stations can be used. 802.11g wireless stations can still be
used if they can operate in 802.11b mode.
The default is "g & b", which allows both "g" and "b" wireless stations to access this device.
• Security Options
– Disable: no data encryption
– WEP (Wired Equivalent Privacy): use WEP 64 or 128 bit data encryption
• Authentication Type: Normally this can be left at the default value of "Automatic." If
that fails, select the appropriate value - "Open System" or "Shared Key" Check your
wireless card's documentation to see what method to use.
• Encryption Strength: Select the WEP Encryption level:
64-bit (sometimes called 40-bit) encryption
128-bit encryption
• Security Encryption (WEP) Key: If WEP is enabled, you can manually or
automatically program the four data encryption keys. These values must be identical
on all PCs and Access Points in your network.
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3-10 Configuring the Internet and Wireless Settings
April 2006
• Automatic Key Generation (Passphrase): Enter a word or group of printable
characters in the Passphrase box and click the Generate button to automatically
configure the WEP Key(s). If encryption strength is set to 64 bit, then each of the four
key boxes will automatically be populated with key values. If encryption strength is
set to 128 bit, then only the selected WEP key box will automatically be populated
with key values.
• Manual Entry Mode: Select which of the four keys will be used and enter the
matching WEP key information for your network in the selected key box.
For 64 bit WEP: Enter ten hexadecimal digits (any combination of 0-9, A-F).
For 128 bit WEP: Enter twenty-six hexadecimal digits (any combination of 0-9, A-F).
– WPA-PSK (Wi-Fi Protected Access Pre-Shared Key): use WPA-PSK standard
encryption
• Security Encryption (WPA-PSK): Enter a word or group of printable characters in
the Passphrase box. The Passphrase must be 8 to 63 characters in length.
Default Factory Settings
When you first receive your WGR614v7, the default factory settings are shown below. You can
restore these defaults with the Factory Default Restore button on the rear panel. After you install
the wireless router, use the procedures below to customize any of the settings to better meet your
networking needs.
FEATURE DEFAULT FACTORY SETTINGS
Wireless Access Point Enabled
Wireless Access List (MAC Filtering) All wireless stations allowed
SSID broadcast Enabled
SSID NETGEAR
11b/g RF Channel 11
Mode g and b
Authentication Type Open System
WEP Disabled
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Configuring the Internet and Wireless Settings 3-11
April 2006
How to Bypass the Configuration Assistant
1. When the wireless router is in the factory default state, type
http://www.routerlogin.net/basicsetting.htm in the address field of your browser, then click
Enter.
When the wireless router is in the factory default state, a user name and password are not
required.
2. The browser will then display the WGR614v7 settings home page shown in Figure 3-3.
If you do not click Logout, the wireless router will wait 5 minutes after there is no activity
before it automatically logs you out.
NETGEAR Product Registration, Support, and Documentation
Register your product at http://www.NETGEAR.com/register. Registration is required before
you can use our telephone support service.
Product updates and Web support are always available by going to:
http://kbserver.netgear.com/products/WGR614v6.asp.
Documentation is available on the CD and at
http://kbserver.netgear.com/documentation/WGR614v6.asp.
When the wireless router is connected to the Internet, click the Knowledge Base or the
Documentation link under the Web Support menu to view support information or the
documentation for the wireless router.
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3-12 Configuring the Internet and Wireless Settings
April 2006
54 Mbps Wireless Router WGR614v7 Reference Manual
4-2 Content Filtering
April 2006
Blocking Access to Internet Sites
The wireless router allows you to restrict access based on Web addresses and Web address
keywords. Up to 255 entries are supported in the Keyword list. The Block Sites menu is shown in
Figure 4-1 below:
Figure 4-1: Block Sites menu
To enable keyword blocking, select either “Per Schedule” or “Always”, then click Apply. If you
want to block by schedule, be sure that a time period is specified in the Schedule menu.
To add a keyword or domain, type it in the Keyword box, click Add Keyword, then click Apply.
To delete a keyword or domain, select it from the list, click Delete Keyword, then click Apply.
Keyword application examples:
• If the keyword “XXX” is specified, the URL <http://www.badstuff.com/xxx.html> is blocked.
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• If the keyword “.com” is specified, only Web sites with other domain suffixes (such as .edu or
.gov) can be viewed.
• If you wish to block all Internet browsing access during a scheduled period, enter the keyword
“.” and set the schedule in the Schedule menu.
To specify a Trusted User, enter that PC’s IP address in the Trusted User box and click Apply.
You may specify one Trusted User, which is a PC that will be exempt from blocking and
logging. Since the Trusted User will be identified by an IP address, you should configure that
PC with a fixed IP address.
Blocking Access to Internet Services
The wireless router allows you to block the use of certain Internet services by PCs on your
network. This is called services blocking or port filtering. The Block Services menu is shown
below:
Figure 4-2: Block Services menu
Services are functions performed by server computers at the request of client computers. For
example, Web servers serve Web pages, time servers serve time and date information, and game
hosts serve data about other players’ moves. When a computer on your network sends a request for
service to a server computer on the Internet, the requested service is identified by a service or port
number. This number appears as the destination port number in the transmitted IP packets. For
example, a packet that is sent with destination port number 80 is an HTTP (Web server) request.
To enable service blocking, select either Per Schedule or Always, then click Apply. If you want to
block by schedule, be sure that a time period is specified in the Schedule menu.
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To specify a service for blocking, click Add. The Add Services menu will appear, as shown below:
Figure 4-3: Add Services menu
From the Service Type list, select the application or service to be allowed or blocked. The list
already displays several common services, but you are not limited to these choices. To add any
additional services or applications that do not already appear, select User Defined.
Configuring a User Defined Service
To define a service, first you must determine which port number or range of numbers is used by
the application. The service numbers for many common protocols are defined by the Internet
Engineering Task Force (IETF) and published in RFC1700, “Assigned Numbers.” Service
numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of
the application. This information can usually be determined by contacting the publisher of the
application or from user groups of newsgroups.
Enter the Starting Port and Ending Port numbers. If the application uses a single port number, enter
that number in both boxes.
If you know that the application uses either TCP or UDP, select the appropriate protocol. If you are
not sure, select Both.
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Configuring Services Blocking by IP Address Range
Under “Filter Services For”, you can block the specified service for a single computer, a range of
computers (having consecutive IP addresses), or all computers on your network.
Scheduling When Blocking Will Be Enforced
The wireless router allows you to specify when blocking will be enforced. The Schedule menu is
shown below:
Figure 4-4: Schedule menu
• Use this schedule for blocking content. Check this box if you wish to enable a schedule for
Content Filtering. Click Apply.
• Days to Block. Select days to block by checking the appropriate boxes. Select Everyday to
check the boxes for all days. Click Apply.
• Time of Day to Block. Select a start and end time in 23:59 format. Select All day for 24 hour
blocking. Click Apply.
Be sure to select your Time Zone in the E-Mail menu.
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Viewing Logs of Web Access or Attempted Web Access
The log is a detailed record of what Web sites you have accessed or attempted to access. Up to 128
entries are stored in the log. Log entries will only appear when keyword blocking is enabled, and
no log entries will be made for the Trusted User. An example is shown below:
Figure 4-5: Logs menu
Log entries are described in Table 4-1
Table 4-1. Log entry descriptions
Field Description
Number The index number of the content filter log entries. 128 entries
are available numbered from 0 to 127. The log will keep the
record of the latest 128 entries.
Date and Time The date and time the log entry was recorded.
Source IP The IP address of the initiating device for this log entry.
Action This field displays whether the access was blocked or allowed.
The name or IP address of the Web site or newsgroup visited or
attempted to access.
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Log action buttons are described in Table 4-2
Configuring E-Mail Alert and Web Access Log Notifications
In order to receive logs and alerts by E-mail, you must provide your E-mail information in the
E-Mail menu, shown below:
Figure 4-6: Email menu
Table 4-2. Log action buttons
Field Description
Refresh Click this button to refresh the log screen.
Clear Log Click this button to clear the log entries.
Send Log Click this button to E-mail the log immediately.
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• Turn e-mail notification on
Check this box if you wish to receive e-mail logs and alerts from the router.
• Your outgoing mail server
Enter the name of your ISP’s outgoing (SMTP) mail server (such as mail.myISP.com). You
may be able to find this information in the configuration menu of your e-mail program. If you
leave this box blank, log and alert messages will not be sent via e-mail.
• Send to this e-mail address
Enter the e-mail address to which logs and alerts are sent. This e-mail address will also be used
as the From address. If you leave this box blank, log and alert messages will not be sent via
e-mail.
You can specify that logs are automatically sent to the specified e-mail address with these options:
• Send alert immediately
Check this box if you would like immediate notification of attempted access to a blocked site.
• Send logs according to this schedule
Specifies how often to send the logs: Hourly, Daily, Weekly, or When Full.
– Day for sending log
Specifies which day of the week to send the log. Relevant when the log is sent weekly or
daily.
– Time for sending log
Specifies the time of day to send the log. Relevant when the log is sent daily or weekly.
If the Weekly, Daily or Hourly option is selected and the log fills up before the specified
period, the log is automatically e-mailed to the specified e-mail address. After the log is sent,
the log is cleared from the router’s memory. If the router cannot e-mail the log file, the log
buffer may fill up. In this case, the router overwrites the log and discards its contents.
The wireless router uses the Network Time Protocol (NTP) to obtain the current time and date
from one of several Network Time Servers on the Internet. In order to localize the time for your
log entries, you must specify your Time Zone:
• Time Zone
Select your local time zone. This setting will be used for the blocking schedule and for
time-stamping log entries.
• Daylight Savings Time
Check this box if your time zone is currently under daylight savings time.
Maintenance 5-1
April 2006
Chapter 5
Maintenance
This chapter describes how to use the maintenance features of your 54 Mbps Wireless Router
WGR614v7. These features can be found by clicking on the Maintenance heading in the Main
Menu of the browser interface.
Viewing Wireless Router Status Information
The Router Status menu provides status and usage information. From the Main Menu of the
browser interface, click on Maintenance, then select Router Status to view the System Status
screen, shown below.
Figure 5-1: Router Status screen
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This screen shows the following parameters:
Table 5-1. Wireless Router Status Fields
Field Description
Account Name This field displays the Host Name assigned to the router.
Firmware Version This field displays the router firmware version.
Internet Port These parameters apply to the Internet (WAN) port of the router.
MAC Address This field displays the Media Access Control address being used by the
Internet (WAN) port of the router.
IP Address This field displays the IP address being used by the Internet (WAN) port
of the router. If no address is shown, the router cannot connect to the
Internet.
DHCP If set to None, the router is configured to use a fixed IP address on the
WAN.
If set to Client, the router is configured to obtain an IP address
dynamically from the ISP.
IP Subnet Mask This field displays the IP Subnet Mask being used by the Internet (WAN)
port of the router.
DNS This field displays the Domain Name Server addresses being used by
the router.
LAN Port These parameters apply to the Local (LAN) port of the router.
MAC Address This field displays the Media Access Control address being used by the
LAN port of the router.
IP Address This field displays the IP address being used by the Local (LAN) port of
the router. The default is 192.168.1.1
IP Subnet Mask This field displays the IP Subnet Mask being used by the Local (LAN)
port of the router. The default is 255.255.255.0
DHCP Identifies if the router’s built-in DHCP server is active for the LAN
attached devices.
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Click on the “Connection Status” button to display the connection status, as shown below.
Figure 5-2: Connection Status screen
This screen shows the following statistics:.
Wireless Port These parameters apply to the Wireless port of the router.
MAC Address This field displays the Media Access Control address being used by the
Wireless port of the router.
Name (SSID) This field displays the wireless network name (SSID) being used by the
wireless port of the router. The default is NETGEAR.
Region This field displays the geographic region where the router being used. It
may be illegal to use the wireless features of the router in some parts of
the world.
Channel Identifies the channel of the wireless port being used. See “Wireless
Channels” on page D-7 for the frequencies used on each channel.
Table 5-2: Connection Status Items
Item Description
IP Address The WAN (Internet) IP Address assigned to the router.
Subnet Mask The WAN (Internet) Subnet Mask assigned to the router.
Table 5-1. Wireless Router Status Fields (continued)
Field Description
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Click on the “Show Statistics” button to display router usage statistics, as shown below.
Figure 5-3: Router Statistics screen
This screen shows the following statistics:
Default Gateway The WAN (Internet) default gateway the router communicates with.
DHCP Server The IP address of the DHCP server which provided the IP configuration addresses.
DNS Server The IP address of the DNS server which provides network name to IP address
translation.
Lease Obtained When the DHCP lease was obtained.
Lease Expires When the DHCP lease was expires.
Release Click the Release button to release the DHCP lease.
Renew Click the Renew button to renew the DHCP lease.
Table 5-3: Router Statistics Items
Item Description
Port The statistics for the WAN (Internet) and LAN (local) ports. For each port, the screen
displays:
Status The link status of the port.
TxPkts The number of packets transmitted on this port since reset or manual clear.
RxPkts The number of packets received on this port since reset or manual clear.
Collisions The number of collisions on this port since reset or manual clear.
Tx B/s The current transmission (outbound) bandwidth used on the WAN and LAN ports.
Table 5-2: Connection Status Items (continued)
Item Description
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Viewing a List of Attached Devices
The Attached Devices menu contains a table of all IP devices that the router has discovered on the
local network. From the Main Menu of the browser interface, under the Maintenance heading,
select Attached Devices to view the table, shown below.
Figure 5-4: Attached Devices menu
For each device, the table shows the IP address, NetBIOS Host Name (if available), and Ethernet
MAC address. Note that if the router is rebooted, the table data is lost until the router rediscovers
the devices. To force the router to look for attached devices, click the Refresh button.
Configuration File Management
The configuration settings of the wireless router are stored within the router in a configuration file.
This le can be saved (backed up) to a user’s PC, retrieved (restored) from the user’s PC, or
cleared to factory default settings.
Rx B/s The current reception (inbound) bandwidth used on the WAN and LAN ports.
Up Time The amount of time since the router was last restarted.
Up Time The time elapsed since this port acquired the link.
Poll Interval Specifies the intervals at which the statistics are updated in this window. Click on Stop
to freeze the display.
Set Interval Enter a time and click the button to set the polling frequency.
Stop Click the Stop button to freeze the polling information.
Table 5-3: Router Statistics Items (continued)
Item Description
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From the Main Menu of the browser interface, under the Maintenance heading, select the Settings
Backup heading to bring up the menu shown below.
Figure 5-5: Settings Backup menu
Three options are available, and are described in the following sections.
Restoring and Backing Up the Configuration
The Restore and Backup options in the Settings Backup menu allow you to save and retrieve a file
containing your router’s configuration settings.
To save your settings, click the Backup button. Your browser will extract the configuration file
from the router and will prompt you for a location on your PC to store the file. You can give the
file a meaningful name at this time, such as pacbell.cfg.
To restore your settings from a saved configuration file, enter the full path to the file on your PC or
click the Browse button to browse to ve located it, click the file. When you ha the Restore button to
send the file to the router. The router will then reboot automatically.
Warning: Do not interrupt the reboot process.
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Erasing the Configuration
It is sometimes desirable to restore the router to original default settings. This can be done by using
the Erase function, which will restore all factory settings. After an erase, the router's password will
be password, the LAN IP address will be 192.168.1.1, and the router's DHCP client will be
enabled.
To erase the configuration, click the Erase button.
To restore the factory default configuration settings without knowing the login password or IP
address, you must use the Default Reset button on the rear panel of the router. See “Restoring the
Default Configuration and Password” on page 7-7.
Upgrading the Router Software
The routing software of the wireless router is stored in FLASH memory, and can be upgraded as
new software is released by NETGEAR. Upgrade files can be downloaded from the NETGEAR
Web site. If the upgrade file is compressed (.ZIP file the file before sending ), you must first extract
it to the router. The upgrade file can be sent to the router using your browser.
Note: The Web browser used to upload new firmware into the wireless router must support HTTP
uploads. NETGEAR recommends using Microsoft Internet Explorer 5.0 and above and Netscape
Navigator 4.7 and above.
From the Main Menu of the browser interface, under the Maintenance heading, select the Router
Upgrade link display the menu shown below.
Note: Before upgrading the router software, use the router backup utility to save your
conguration settings. Any router upgrade will revert the router settings back to the
factory defaults. After completing the upgrade, you can restore your settings from the
backup.
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5-8 Maintenance
April 2006
Figure 5-6: Router Upgrade menu
To upload new firmware:
1. Download and unzip (if the downloaded file is a .zip file) the new software file from
NETGEAR.
2. In the Router Upgrade menu, click the Browse button and browse to the location of the
upgrade file
3. Click Upload.
Note: When uploading software to the wireless router, it is important not to interrupt the Web
browser by closing the window, clicking a link, or loading a new page. If the browser is
interrupted, it may corrupt the software. When the upload is complete, your router will
automatically restart. The upgrade process will typically take about one minute.
In some cases, you may need to reconfigure the router after upgrading.
Changing the Administrator Password
The default password for the router’s Web Configuration Manager is password. NETGEAR
recommends that you change this password to a more secure password.
Note: Before changing the router password, use the router backup utility to save your
configuration settings. If after changing the password, you forget the new password you
assigned, you will have to reset the router back to the factory defaults to be able to log in
using the default password of password. This means you will have to restore all the
router configuration settings. If you ever have to reset the router back to the factory
defaults, you can restore your settings from the backup.
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Advanced Configuration of the Router 6-1
April 2006
Chapter 6
Advanced Configuration of the Router
This chapter describes how to configure the advanced features of your 54 Mbps Wireless Router
WGR614v7. These features can be found under the Advanced heading in the Main Menu of the
browser interface.
.
Configuring Port Triggering
Port Triggering is an advanced feature that can be used to easily enable gaming and other internet
applications. Port Forwarding is typically used to enable similar functionality, but it is static and
has some limitations.
Note: If you use applications such as multi-player gaming, peer-to-peer connections, real time
communications such as instant messaging, or remote assistance (a feature in Windows XP), you
should also enable UPnP according to the instructions at “Using Universal Plug and Play (UPnP)“
on page 6-18.
Port Triggering opens an incoming port temporarily and does not require the server on the internet
to track your IP address if it is changed by DHCP, for example.
Port Triggering monitors outbound traffic. When the router detects traffic on the specified
outbound port, it remembers the IP address of the computer that sent the data and triggers the
incoming port. Incoming traffic on the triggered port is then forwarded to the triggering computer.
Using the Port Triggering page, you can make local computers or servers available to the Internet
for different services (for example, FTP or HTTP), to play Internet games (like Quake III), or to
use Internet applications (like CUseeMe).
Port Forwarding is designed for FTP, Web Server or other server based services. Once port
forwarding is set up, request from Internet will be forwarded to the proper server. On the contrary,
Note: If you are unfamiliar with networking and routing, refer to Appendix B,
“Network, Routing, Firewall, and Basics,” to become more familiar with the terms and
procedures used in this chapter.
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April 2006
Follow these steps to set up a computer to play Internet games or use Internet applications:
1. Click Add.
Figure 6-2: Add Port Trigger Menu
2. Enter a service name in the Service Name box.
3. Under Service User, selecting Any (default) will allow this service to be used by everyone in
your network. Otherwise, select Single address and enter the IP address of one computer to
restrict the service to a particular computer.
4. Select the Service Type.
5. Enter the outbound port number in Triggering Port box.
6. Enter the inbound connection port information such as Connection Type, Starting Port and
Ending Port boxes. This information can be obtained from the game or applications manual or
support Web site.
7. Click Apply to save your changes.
Configuring Port Forwarding to Local Servers
Although the router causes your entire local network to appear as a single machine to the Internet,
you can make a local server (for example, a Web server or game server) visible and available to the
Internet. This is done using the Port Forwarding menu. From the Main Menu of the browser
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interface, under Advanced, click on Port Forwarding to view the port forwarding menu, shown
below.
Figure 6-3: Port Forwarding Menu
Use the Port Forwarding menu to configure the router to forward incoming protocols to computers
on your local network. In addition to servers for specific applications, you can also specify a
Default DMZ Server to which all other incoming protocols are forwarded. The DMZ Server is
configured in the WAN Setup menu as discussed in “Configuring the WAN Setup Options“ on
page 6-7.
Before starting, you'll need to determine which type of service, application or game you'll provide
and the IP address of the computer that will provide each service. Be sure the computer’s IP
address never changes. To configure port forwarding to a local server:
1. From the Service & Game box, select the service or game that you will host on your network.
If the service does not appear in the list, refer to the following section, “Adding a Custom
Service”.
2. Enter the IP address of the local server in the corresponding Server IP Address box.
3. Click the Add button.
Note: To assure that the same computer always has the same IP address, use the reserved
IP address feature of your wireless router. See “Using Address Reservation“ on page
6-12 for instructions on how to use reserved IP addresses.
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Adding a Custom Service
To define a service, game or application that does not appear in the Services & Games list, you
must determine what port numbers are used by the service. For this information, you may need to
contact the manufacturer of the program that you wish to use. When you have the port number
information, follow these steps:
1. Click the Add Custom Service button.
Figure 6-4: Ports - Custom Services Menu
2. Type the service name in the Service Name box.
3. Type the beginning port number in the Starting Port box.
• If the application uses only a single port; type the same port number in the Ending Port
box.
• If the application uses a range of ports; type the ending port number of the range in the
Ending Port box.
4. Type the IP address of the computer in the Server IP Address box.
5. Click Apply to save your changes.
Editing or Deleting a Port Forwarding Entry
To edit or delete a Port Forwarding entry, follow these steps.
1. In the table, select the button next to the service name.
2. Click Edit or Delete.
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Local Web and FTP Server Example
If a local computer with a private IP address of 192.168.1.33 acts as a Web and FTP server,
configure the Ports menu to forward HTTP (port 80) and FTP (port 21) to local address
192.168.1.33
In order for a remote user to access this server from the Internet, the remote user must know the IP
address that has been assigned by your ISP. If this address is 172.16.1.23, for example, an Internet
user can access your Web server by directing the browser to http://172.16.1.23. The assigned IP
address can be found in the Maintenance Status Menu, where it is shown as the WAN IP Address.
Some considerations for this application are:
• If your account’s IP address is assigned dynamically by your ISP, the IP address may change
periodically as the DHCP lease expires.
• If the IP address of the local computer is assigned by DHCP, it may change when the computer
is rebooted. To avoid this, you can manually configure the computer to use a fixed address.
• Local computers must access the local server using the computers’ local LAN address
(192.168.1.33 in this example). Attempts by local computers to access the server using the
external IP address (172.16.1.23 in this example) will fail.
Multiple Computers for Half Life, KALI or Quake III Example
To set up an additional computer to play Half Life, KALI or Quake III:
1. Click the button of an unused port in the table.
2. Select the game again from the Services/Games list.
3. Change the beginning port number in the Start Port box.
For these games, use the supplied number in the default listing and add +1 for each additional
computer. For example, if you've already configured one computer to play Hexen II (using
port 26900), the second computer's port number would be 26901, and the third computer
would be 26902.
4. Type the same port number in the End Port box that you typed in the Start Port box.
5. Type the IP address of the additional computer in the Server IP Address box.
6. Click Apply.
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Advanced Configuration of the Router 6-7
April 2006
Some online games and videoconferencing applications are incompatible with NAT. The wireless
router is programmed to recognize some of these applications and to work properly with them, but
there are other applications that may not function well. In some cases, one local computer can run
the application properly if that computer’s IP address is entered as the default in the PORTS Menu.
If one local computer acts as a game or videoconferencing host, enter its IP address as the default.
Configuring the WAN Setup Options
The WAN Setup options let you configure a DMZ server, change the MTU size and enable the
wireless router to respond to a Ping on the WAN port. These options are discussed below.
Figure 6-5: WAN Setup menu.
Connect Automatically, as Required
Normally, this option should be checked to enable it. An Internet connection will be made
automatically after each timeout, whenever Internet-bound traffic is detected. This provides
connection on demand and is potentially cost-saving in places in Europe for example where
Internet services charge by the minute.
If disabled, you must connect manually, using the “Connection Status” button on the Router Status
screen. This manual connection will stay up all the time without time outs.
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6-8 Advanced Configuration of the Router
April 2006
Disabling the SPI Firewall
The SPI (Stateful Packet Inspection) Firewall protects your LAN against Denial of Service attacks.
This should only be disabled in special circumstances.
Setting Up a Default DMZ Server
The default DMZ server feature is helpful when using some online games and videoconferencing
applications that are incompatible with NAT. The router is programmed to recognize some of these
applications and to work properly pplications that may not function with them, but there are other a
well. In some cases, one local computer can run the application properly if that computer’s IP
address is entered as the default DMZ server.
Incoming traffic from the Internet is normally discarded by the router unless the traffic is a
response to one of your local computers or a service that you have configured in the Ports menu.
Instead of discarding this traffic, you can have it forwarded to one computer on your network. This
computer is called the Default DMZ Server.
The WAN Setup menu, shown below lets you configure a Default DMZ Server.
To assign a computer or server to be a Default DMZ server, follow these steps:
1. Click WAN Setup link on the Advanced section of the main menu.
2. Type the IP address for that server. To remove the default DMZ server, replace the IP address
numbers with all zeros.
3. Click Apply.
Responding to Ping on Internet WAN Port
If you want the router to respond to a 'ping' from the Internet, click the ‘Respond to Ping on
Internet WAN Port’ check box. This should only be used as a diagnostic tool, since it allows your
router to be discovered. Don't check this box unless you have a specific reason to do so.
Note: DMZ servers pose a security risk. A computer designated as the default DMZ
server loses much of the protection of the firewall, and is exposed to exploits from the
Internet. If compromised, the DMZ server can be used to attack your network.
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Advanced Configuration of the Router 6-9
April 2006
Setting the MTU Size
The normal MTU (Maximum Transmit Unit) value for most Ethernet networks is 1500 Bytes,
1492 Bytes for PPPoE connections, or 1436 for PPTP connections. For some ISPs you may need to
reduce the MTU. But this is rarely required, and should not be done unless you are sure it is
necessary for your ISP connection.
Any packets sent through the router that are larger than the configured MTU size will be
repackaged into smaller packets to meet the MTU requirement. To change the MTU size:
1. Under MTU Size, enter a new size between 64 and 1500.
2. Click Apply to save the new configuration.
Using the LAN IP Setup Options
The second feature category under the Advanced heading is LAN IP Setup. This menu allows
configuration of LAN IP services such as DHCP and RIP. From the Main Menu of the browser
interface, under Advanced, click on LAN IP Setup to view the LAN IP Setup menu, shown below.
Figure 6-6: LAN IP Setup Menu
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6-10 Advanced Configuration of the Router
April 2006
Configuring LAN TCP/IP Setup Parameters
The router is shipped preconfigured to use private IP addresses on the LAN side, and to act.as a
DHCP server. The router’s default LAN IP configuration is:
• LAN IP addresses—192.168.1.1
• Subnet mask—255.255.255.0
These addresses are part of the IETF-designated private address range for use in private networks,
and should be suitable in most applications. If your network has a requirement to use a different IP
addressing scheme, you can make those changes in this menu.
The LAN IP parameters are:
• IP Address
This is the LAN IP address of the router.
• IP Subnet Mask
This is the LAN Subnet Mask of the router. Combined with the IP address, the IP Subnet Mask
allows a device to know which other addresses are local to it, and which must be reached
through a gateway or router.
• RIP Direction
RIP (Router Information Protocol) allows a router to exchange routing information with other
routers. The RIP Direction selection controls how the router sends and receives RIP packets.
None is the default.
— When set to Both or Out Only, the router will broadcast its routing table periodically.
— When set to Both or In Only, it will incorporate the RIP information that it receives.
— When set to None (default), it will not send any RIP packets and will ignore any RIP
packets received.
• RIP Version
This controls the format and the broadcasting method of the RIP packets that the router sends.
(It recognizes both formats when receiving.) By default, this is set for RIP-1.
— RIP-1 is universally supported. RIP-1 is probably adequate for most networks, unless you
have an unusual network setup.
— RIP-2 carries more information. RIP-2B uses subnet broadcasting.
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April 2006
Using the Router as a DHCP server
By default, the router will function as a DHCP (Dynamic Host Configuration Protocol) server,
allowing it to assign IP, DNS server, and default gateway addresses to all computers connected to
the router's LAN. The assigned default gateway address is the LAN address of the router. IP
addresses will be assigned to the attached computers from a pool of addresses specified in this
menu. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.
For most applications, the default DHCP and TCP/IP settings of the router are satisfactory. See “IP
Configuration by DHCP” on page B-10 for an explanation of DHCP and information about how to
assign IP addresses for your network.
If another device on your network will be the DHCP server, or if you will manually configure the
network settings of all of your computers, clear the ‘Use router as DHCP server’ check box.
Otherwise, leave it checked.
Specify the pool of IP addresses to be assigned by setting the Starting IP Address and Ending IP
Address. These addresses should be part of the same IP address subnet as the router’s LAN IP
address. Using the default addressing scheme, you should define a range between 192.168.1.2 and
192.168.1.253, although you may wish to save part of the range for devices with fixed addresses.
The router will deliver the following parameters to any LAN device that requests DHCP:
• An IP Address from the range you have defined
• Subnet Mask
• Gateway IP Address (the router’s LAN IP address)
• Primary DNS Server (if you entered a Primary DNS address in the Basic Settings menu;
otherwise, the router’s LAN IP address)
• Secondary DNS Server (if you entered a Secondary DNS address in the Basic Settings menu
Note: If you change the LAN IP address of the router while connected through the
browser, you will be disconnected. You must then open a new connection to the new IP
address and log in again.
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6-16 Advanced Configuration of the Router
April 2006
When you first configured your router, two implicit static routes were created. A default route was
created with your ISP as the gateway, and a second static route was created to your local network
for all 192.168.1.x addresses. With this configuration, if you attempt to access a device on the
134.177.0.0 network, your router will forward your request to the ISP. The ISP forwards your
request to the company where you are employed, and the request will likely be denied by the
company’s firewall.
In this case you must define a static route, telling your router that 134.177.0.0 should be accessed
through the ISDN router at 192.168.1.100. The static route would look like Figure 6-10.
In this example:
• The Destination IP Address and IP Subnet Mask fields specify that this static route applies to
all 134.177.x.x addresses.
• The Gateway IP Address fields specifies that all traffic for these addresses should be
forwarded to the ISDN router at 192.168.1.100.
• A Metric value of 1 will work since the ISDN router is on the LAN.
• Private is selected only as a precautionary security measure in case RIP is activated.
Enabling Remote Management Access
Using the Remote Management page, you can allow a user or users on the Internet to configure,
upgrade and check the status of your wireless router.
Note: Be sure to change the router's default configuration password to a very secure
password. The ideal password should contain no dictionary words from any language,
and should be a mixture of letters (both upper and lower case), numbers, and symbols.
Your password can be up to 30 characters.
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6-18 Advanced Configuration of the Router
April 2006
Note: When accessing your router from the Internet, you will type your router's WAN IP address
into your browser's Address (in IE) or Location (in Netscape) box, followed by a colon (:) and the
custom port number. For example, if your external address is 134.177.0.123 and you use port
number 8080, you must enter http://134.177.0.123:8080 in your browser. The Remote
Management Address from the Remote Management Window (see Figure 6-11) is the address you
will enter in your browser's address field.
Using Universal Plug and Play (UPnP)
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers,
access the network and connect to other devices as needed. UPnP devices can
automatically discover the services from other registered UPnP devices on the network.
Figure 6-12. UPnP Menu
From the Main Menu of the browser interface, under Advanced, click on UPnP. Set up UPnP
according to the guidelines below.
Turn UPnP On: UPnP can be enabled or disabled for automatic device configuration. The default
setting for UPnP is disabled. If disabled, the router will not allow any device to automatically
control the resources, such as port forwarding (mapping), of the router.
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April 2006
Note: If you use applications such as multi-player gaming, peer-to-peer connections, real time
communications such as instant messaging, or remote assistance (a feature in Windows XP), you
should enable UPnP.
Advertisement Period: The Advertisement Period is how often the router will broadcast its UPnP
information. This value can range from 1 to 1440 minutes. The default period is 30 minutes.
Shorter durations will ensure that control points have current device status at the expense of
additional network traffic. Longer durations may compromise the freshness of the device status but
can significantly reduce network traffic.
Advertisement Time To Live: The time to live for the advertisement is measured in hops (steps)
for each UPnP packet sent. The time to live hop count is the number of steps a broadcast packet is
allowed to propagate for each UPnP advertisement before it disappears. The number of hops can
range from 1 to 255. The default value for the advertisement time to live is 4 hops, which should
be fine for most home networks. If you notice that some devices are not being updated or reached
correctly, then it may be necessary to increase this value a little.
UPnP Portmap Table: The UPnP Portmap Table displays the IP address of each UPnP device that
is currently accessing the router and which ports (Internal and External) that device has opened.
The UPnP Portmap Table also displays what type of port is opened and if that port is still active for
each IP address.
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6-20 Advanced Configuration of the Router
April 2006
Troubleshooting 7-1
April 2006
Chapter 7
Troubleshooting
This chapter gives information about troubleshooting your 54 Mbps Wireless Router WGR614v7.
After each problem description, instructions are provided to help you diagnose and solve the
problem.
Basic Functioning
After you turn on power to the router, the following sequence of events should occur:
1. When power is first applied, verify that the Power light is on.
2. After approximately 10 seconds, verify that:
a. The power light is solid green.
b. The LAN port lights are lit for any local ports that are connected.
c. The Internet port light is lit.
If a port’s light is lit, a link has been established to the connected device. If a LAN port is
connected to a 100 Mbps device, verify that the port’s light is green. If the port is 10 Mbps, the
light will be amber.
If any of these conditions does not occur, refer to the appropriate following section.
Power Light Not On
If the Power and other lights are off when your router is turned on:
• Make sure that the power cord is properly connected to your router and that the power supply
adapter is properly connected to a functioning power outlet.
• Check that you are using the 12 V DC 1A power adapter supplied by NETGEAR for this
product.
If the error persists, you have a hardware problem and should contact technical support.
54 Mbps Wireless Router WGR614v7 Reference Manual
7-2 Troubleshooting
April 2006
Lights Never Turn Off
When the router is turned on, the lights turns on for about 10 seconds and then turn off. If all the
lights stay on, there is a fault within the router.
If all lights are still on one minute after power up:
• Cycle the power to see if the router recovers.
• Clear the router’s configuration to factory defaults. This will set the router’s IP address to
192.168.1.1. This procedure is explained in “Restoring the Default Configuration and
Password” on page 7-7.
If the error persists, you might have a hardware problem and should contact technical support.
LAN or WAN Port Lights Not On
If either the LAN lights or Internet light do not light when the Ethernet connection is made, check
the following:
• Make sure that the Ethernet cable connections are secure at the router and at the hub or
workstation.
• Make sure that power is turned on to the connected hub or workstation.
• Be sure you are using the correct cable:
— When connecting the router’s Internet port to a cable or DSL modem, use the cable that
was supplied with the cable or DSL modem. This cable could be a standard
straight-through Ethernet cable or an Ethernet crossover cable.
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Troubleshooting 7-3
April 2006
Troubleshooting the Web Configuration Interface
If you are unable to access the router’s Web Configuration interface from a computer on your local
network, check the following:
• Check the Ethernet connection between the computer and the router as described in the
previous section.
• Make sure your computer’s IP address is on the same subnet as the router. If you are using the
recommended addressing scheme, your computer’s address should be in the range of
192.168.1.2 to 192.168.1.254. Refer to “Verifying TCP/IP Properties” on page C-8 or
“Verifying TCP/IP Properties for Macintosh Computers” on page C-19 to find your
computer’s IP address. Follow the instructions in Appendix C to configure your computer.
Note: If your computer’s IP address is shown as 169.254.x.x: Recent versions of Windows
and MacOS will generate and assign an IP address if the computer cannot reach a DHCP
server. These auto-generated addresses are in the range of 169.254.x.x. If your IP address is in
this range, check the connection from the computer to the router and reboot your computer.
• If your router’s IP address has been changed and you don’t know the current IP address, clear
the router’s configuration to factory defaults. This will set the router’s IP address to
192.168.1.1. This procedure is explained in “Restoring the Default Configuration and
Password” on page 7-7.
• Make sure your browser has Java, JavaScript, or ActiveX enabled. If you are using Internet
Explorer, click Refresh to be sure the Java applet is loaded.
• Try quitting the browser and launching it again.
• Make sure you are using the correct login information. The factory default login name is
admin and the password is password. Make sure that CAPS LOCK is off when entering this
information.
If the router does not save changes you have made in the Web Configuration Interface, check the
following:
• When entering configuration settings, be sure to click the APPLY button before moving to
another menu or tab, or your changes are lost.
• Click the Refresh or Reload button in the Web browser. The changes may have occurred, but
the Web browser may be caching the old configuration.
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April 2006
Troubleshooting the ISP Connection
If your router is unable to access the Internet, you should first determine whether the router is able
to obtain a WAN IP address from the ISP. Unless you have been assigned a static IP address, your
router must request an IP address from the ISP. You can determine whether the request was
successful using the Web Configuration Manager.
To check the WAN IP address:
1. Launch your browser and select an external site such as www.netgear.com
2. Access the Main Menu of the router’s configuration at http://www.routerlogin.net.
3. Under the Maintenance heading, select Router Status
4. Check that an IP address is shown for the WAN Port
If 0.0.0.0 is shown, your router has not obtained an IP address from your ISP.
If your router is unable to obtain an IP address from the ISP, you may need to force your cable or
DSL modem to recognize your new router by performing the following procedure:
1. Turn off power to the cable or DSL modem.
2. Turn off power to your router.
3. Wait five minutes and reapply power to the cable or DSL modem.
4. When the modem’s lights indicate that it has reacquired sync with the ISP, reapply power to
your router.
5. Then restart your computer.
If your router is still unable to obtain an IP address from the ISP, the problem may be one of the
following:
• Your ISP may require a login program.
Ask your ISP whether they require PPP over Ethernet (PPPoE) or some other type of login.
• If your ISP requires a login, you may have incorrectly set the login name and password.
• Your ISP may check for your computer's host name.
Assign the computer Host Name of your ISP account as the Account Name in the Basic
Settings menu.
• Your ISP only allows one Ethernet MAC address to connect to Internet, and may check for
your computer’s MAC address. In this case:
54 Mbps Wireless Router WGR614v7 Reference Manual
Troubleshooting 7-5
April 2006
Inform your ISP that you have bought a new network device, and ask them to use the router’s
MAC address.
OR
Configure your router to spoof your computer’s MAC address. This can be done in the Basic
Settings menu.
If your router can obtain an IP address, but your computer is unable to load any Web pages from
the Internet:
• Your computer may not recognize any DNS server addresses.
A DNS server is a host on the Internet that translates Internet names (such as www addresses)
to numeric IP addresses. Typically your ISP will provide the addresses of one or two DNS
servers for your use. If you entered a DNS address during the router’s configuration, reboot
your computer and verify the DNS address as described in “Install or Verify Windows
Networking Components” on page C-9. Alternatively, you may configure your computer
manually with DNS addresses, as explained in your operating system documentation.
• Your computer may not have the router configured as its TCP/IP gateway.
If your computer obtains its information from the router by DHCP, reboot the computer and
verify the gateway address as described in “Install or Verify Windows Networking
Components” on page C-9.
Troubleshooting a TCP/IP Network Using a Ping Utility
Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request packet
to the designated device. The device then responds with an echo reply. Troubleshooting a TCP/IP
network is made very easy by using the ping utility in your computer or workstation.
Testing the LAN Path to Your Router
You can ping the router from your computer to verify that the LAN path to your router is set up
correctly.
To ping the router from a running Windows 95 or later:
1. From the Windows toolbar, click on the Start button and select Run.
2. In the field provided, type Ping followed by the IP address of the router, as in this example:
ping 192.168.1.1
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7-8 Troubleshooting
April 2006
• Date shown is January 1, 2000. Cause: The router has not yet successfully reached a Network
Time Server. Check that your Internet access settings are congured correctly. If you have just
completed configuring the router, wait at least five minutes and check the date and time again.
• Time is off by one hour. Cause: The router does not automatically sense Daylight Savings
Time. In the E-Mail menu, check or uncheck the box marked “Adjust for Daylight Savings
Time”.
Technical Specifications A-1
April 2006
Appendix A
Technical Specifications
This appendix provides technical specications for the 54 Mbps Wireless Router WGR614v7.
Network Protocol and Standards Compatibility
Data and Routing Protocols: TCP/IP, RIP-1, RIP-2, DHCP
PPP over Ethernet (PPPoE)
Power Adapter
North America: 120V, 60 Hz, input
United Kingdom, Australia: 240V, 50 Hz, input
Europe: 230V, 50 Hz, input
Japan: 100V, 50/60 Hz, input
All regions (output): 12 V DC @ 1A output, 22W maximum
Physical Specifications
Dimensions: 28 x 175 x 119 mm (1.1 x 6.89 x 4.68 in.)
Weight: 0.3 kg (0.66 lb)
Environmental Specifications
Operating temperature: 0° to 40° C (32º to 104º F)
Operating humidity: 90% maximum relative humidity, noncondensing
Electromagnetic Emissions
Meets requirements of: FCC Part 15 Class B
VCCI Class B
EN 55 022 (CISPR 22), Class B
C-Tick N10947
MIC, Class B
Interface Specifications
LAN: 10BASE-T or 100BASE-Tx, RJ-45
WAN: 10BASE-T or 100BASE-Tx, RJ-45
54 Mbps Wireless Router WGR614v7 Reference Manual
A-2 Technical Specifications
April 2006
Wireless
Radio Data Rates 1, 2, 5.5, 6, 9, 12, 18, 24, 36, 48, and 54 Mbps
Auto Rate Sensing
Frequency 2.4-2.5Ghz
Data Encoding: 802.11b: Direct Sequence Spread Spectrum (DSSS)
802.11g: Orthogonal Frequency Division Multiplexing (OFDM)
Maximum Computers Per Wireless
Network:
Limited by the amount of wireless network traffic generated by each
node. Typically 30-70 nodes.
Operating Frequency Ranges: 2.412~2.462 GHz (US) 2.457~2.462 GHz (Spain)
2.412~2.484 GHz (Japan)2.457~2.472 GHz (France)
2.412~2.472 GHz (Europe ETSI)
802.11 Security: 40-bits (also called 64-bits) and 128-bits WEP and WPA-PSK
Network, Routing, Firewall, and Basics B-1
April 2006
Appendix B
Network, Routing, Firewall, and Basics
This chapter provides an overview of IP networks, routing, and networking.
Related Publications
As you read this document, you may be directed to various RFC documents for further
information. An RFC is a Request For Comment (RFC) published by the Internet Engineering
Task Force (IETF), an open organization that defines the architecture and operation of the Internet.
The RFC documents outline and define the standard protocols and procedures for the Internet. The
documents are listed on the World Wide Web at www.ietf.org and are mirrored and indexed at
many other sites worldwide.
Basic Router Concepts
Large amounts of bandwidth can be provided easily and relatively inexpensively in a local area
network (LAN). However, providing high bandwidth between a local network and the Internet can
be very expensive. Because of this expense, Internet access is usually provided by a slower-speed
wide-area network (WAN) link such as a cable or DSL modem. In order to make the best use of the
slower WAN link, a mechanism must be in place for selecting and transmitting only the data traffic
meant for the Internet. The function of selecting and forwarding this data is performed by a router.
What is a Router?
A router is a device that forwards traffic between networks based on network layer information in
the data and on routing tables maintained by the router. In these routing tables, a router builds up a
logical picture of the overall network by gathering and exchanging information with other routers
in the network. Using this information, the router chooses the best path for forwarding network
traffic.
Routers vary in performance and scale, number of routing protocols supported, and types of
physical WAN connection they support. The 54 Mbps Wireless Router WGR614v7 is a small
office router that routes the IP protocol over a single-user broadband connection.
54 Mbps Wireless Router WGR614v7 Reference Manual
Network, Routing, Firewall, and Basics B-3
April 2006
Figure B-1: Three Main Address Classes
The five address classes are:
• Class A
Class A addresses can have up to 16,777,214 hosts on a single network. They use an eight-bit
network number and a 24-bit node number. Class A addresses are in this range:
1.x.x.x to 126.x.x.x.
• Class B
Class B addresses can have up to 65,354 hosts on a network. A Class B address uses a 16-bit
network number and a 16-bit node number. Class B addresses are in this range:
128.1.x.x to 191.254.x.x.
• Class C
Class C addresses can have 254 hosts on a network. Class C addresses use 24 bits for the
network address and eight bits for the node. They are in this range:
192.0.1.x to 223.255.254.x.
• Class D
Class D addresses are used for multicasts (messages sent to many hosts). Class D addresses are
in this range:
224.0.0.0 to 239.255.255.255.
• Class E
Class E addresses are for experimental use.
7261
C
lass A
N
etwork Node
C
lass B
C
lass C
Network Node
Network Node
54 Mbps Wireless Router WGR614v7 Reference Manual
Network, Routing, Firewall, and Basics B-5
April 2006
Subnet addressing allows us to split one IP network address into smaller multiple physical
networks known as subnetworks. Some of the node bnet number instead. numbers are used as a su
A Class B address gives us 16 bits of node numbers translating to 64,000 nodes. Most
organizations do not use 64,000 nodes, so there are free bits that can be reassigned. Subnet
addressing makes use of those bits that are free, as shown below.
Figure B-2: Example of Subnetting a Class B Address
A Class B address can be effectively translated into multiple Class C addresses. For example, the
IP address of 172.16.0.0 is assigned, but node addresses are limited to 255 maximum, allowing
eight extra bits to use as a subnet address. The IP address of 172.16.97.235 would be interpreted as
IP network address 172.16, subnet number 97, and node number 235. In addition to extending
the number of addresses available, subnet addressing provides other benefits. Subnet addressing
allows a network manager to construct an address scheme for the network by using different
subnets for other geographical locations in the network or for other departments in the
organization.
Although the preceding example uses the entire third octet for a subnet address, note that you are
not restricted to octet boundaries in subnetting. To create more network numbers, you need only
shift some bits from the host address to the network address. For instance, to partition a Class C
network number (192.68.135.0) into two, you shift one bit from the host address to the network
address. The new netmask (or subnet mask) is 255.255.255.128. The first subnet has network
number 192.68.135.0 with hosts 192.68.135.1 to 129.68.135.126, and the second subnet has
network number 192.68.135.128 with hosts 192.68.135.129 to 192.68.135.254.
Note: The number 192.68.135.127 is not assigned because it is the broadcast address
of the first subnet. The number 192.68.135.128 is not assigned because it is the network
address of the second subnet.
C
lass B
Network Subnet Node
54 Mbps Wireless Router WGR614v7 Reference Manual
B-6 Network, Routing, Firewall, and Basics
April 2006
The following table lists the additional subnet mask bits in dotted-decimal notation. To use the
table, write down the original class netmask and replace the 0 value octets with the dotted-decimal
value of the additional subnet bits. For example, to partition your Class C network with subnet
mask 255.255.255.0 into 16 subnets (4 bits), the new subnet mask becomes 255.255.255.240.
The following table displays several common netmask values in both the dotted-decimal and the
masklength formats.
Configure all hosts on a LAN segment to use the same netmask for the following reasons:
Table 7-1. Netmask Notation Translation Table for One Octet
Number of Bits Dotted-Decimal Value
1 128
2 192
3 224
4 240
5 248
6 252
7 254
8 255
Table 7-2. Netmask Formats
Dotted-Decimal Masklength
255.0.0.0 /8
255.255.0.0 /16
255.255.255.0 /24
255.255.255.128 /25
255.255.255.192 /26
255.255.255.224 /27
255.255.255.240 /28
255.255.255.248 /29
255.255.255.252 /30
255.255.255.254 /31
255.255.255.255 /32
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• So that hosts recognize local IP broadcast packets
When a device broadcasts to its segment neighbors, it uses a destination address of the local
network address with all ones for the host address. In order for this scheme to work, all devices
on the segment must agree on which bits comprise the host address.
• So that a local router or bridge recognizes which addresses are local and which are remote
Private IP Addresses
If your local network is isolated from the Internet (for example, when using NAT), you can assign
any IP addresses to the hosts without problems. However, the IANA has reserved the following
three blocks of IP addresses specifically for private networks:
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
Choose your private network number from this range. The DHCP server of the wireless router is
preconfigured to automatically assign private addresses.
Regardless of your particular situation, do not create an arbitrary IP address; always follow the
guidelines explained here. For more information about address assignment, refer to RFC 1597,
Address Allocation for Private Internets, and RFC 1466, Guidelines for Management of IP
Address Space. The Internet Engineering Task Force (IETF) publishes RFCs on its Web site at
www.ietf.org.
Single IP Address Operation Using NAT
In the past, if multiple computers on a LAN needed to access the Internet simultaneously, you had
to obtain a range of IP addresses from the ISP. This type of Internet account is more costly than a
single-address account typically used by a single user with a modem, rather than a router. The
wireless router employs an address-sharing method called Network Address Translation (NAT).
This method allows several networked computers to share an Internet account using only a single
IP address, which may be statically or dynamically assigned by your ISP.
The router accomplishes this address sharing by translating the internal LAN IP addresses to a
single address that is globally unique on the Internet. The internal LAN IP addresses can be either
private addresses or registered addresses. For more information about IP address translation, refer
to RFC 1631, The IP Network Address Translator (NAT).
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The following figure illustrates a single IP address operation.
Figure B-3: Single IP Address Operation Using NAT
This scheme offers the additional benefit of firewall-like protection because the internal LAN
addresses are not available to the Internet through the translated connection. All incoming
inquiries are filtered out by the router. This filtering can prevent intruders from probing your
system. However, using port forwarding, you can allow one computer (for example, a Web server)
on your local network to be accessible to outside users.
MAC Addresses and Address Resolution Protocol
An IP address alone cannot be used to deliver data from one LAN device to another. To send data
between LAN devices, you must convert the IP address of the destination device to its media
access control (MAC) address. Each device on an Ethernet network has a unique MAC address,
which is a 48-bit number assigned to each device by the manufacturer. The technique that
associates the IP address with a MAC address is known as address resolution. Internet Protocol
uses the Address Resolution Protocol (ARP) to resolve MAC addresses.
1
92.168.0.2
1
92.168.0.3
1
92.168.0.4
1
92.168.0.5
192.168.0.1 172.21.15.105
Private IP addresses
assigned by user
Internet
IP addresses
assigned by ISP
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If a device sends data to another station on the network and the destination MAC address is not yet
recorded, ARP is used. An ARP request is broadcast onto the network. All stations on the network
receive and read the request. The destination IP address for the chosen station is included as part of
the message so that only the station with this IP address responds to the ARP request. All other
stations discard the request.
Related Documents
The station with the correct IP address responds with its own MAC address directly to the sending
device. The receivin ansmitting station with the g station provides the tr required destination MAC
address. The IP address data and MAC address data for each station are held in an ARP table. The
next time data is sent, the address can be obtained from the address information in the table.
For more information about address assignment, refer to the IETF documents RFC 1597, Address
Allocation for Private Internets, Guidelines for Management of IP Address Space and RFC 1466, .
For more information about IP address translation, refer to RFC 1631, The IP Network Address
Translator (NAT).
Domain Name Server
Many of the resources on the In mple descriptive names such as ternet can be addressed by si
www.NETGEAR.com. This addressing is very helpful at the application level, but the descriptive
name must be translated to an IP address in order for a user to actually contact the resource. Just as
a telephone directory maps names to phone numbers, or as an ARP table maps IP addresses to
MAC addresses, a domain name system (DNS) server maps descriptive names of network
resources to IP addresses.
When a computer accesses a resource by its descriptive name, it first contacts a DNS server to
obtain the IP address of the resource. The computer sends the desired message using the IP
address. Many large organizations, such as ISPs, maintain their own DNS servers and allow their
customers to use the servers to look up addresses.
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Stateful Packet Inspection
Unlike simple Internet sharing routers, a firewall uses a process called stateful packet inspection to
ensure secure firewall filtering to protect your network from attacks and intrusions. Since
user-level applications such as FTP and Web browsers can create complex patterns of network
traffic, it is necessary for the firewall to analyze groups of network connection states. Using
Stateful Packet Inspection, an incoming packet is intercepted at the network layer and then
analyzed for state-related information associated with all network connections. A central cache
within the firewall keeps track of the state information associated with all network connections.
All traffic passing through the firewall is analyzed against the state of these connections in order to
determine whether or not it will be allowed to pass through or rejected.
Denial of Service Attack
A hacker may be able to prevent your network from operating or communicating by launching a
Denial of Service (DoS) attack. The method used for such an attack can be as simple as merely
flooding your site with more requests than it can handle. A more sophisticated attack may attempt
to exploit some weakness in the operating system used by your router or gateway. Some operating
systems can be disrupted by simply sending a packet with incorrect length information.
Ethernet Cabling
Although Ethernet networks originally used thick or thin coaxial cable, most installations currently
use unshielded twisted pair (UTP) cabling. The UTP cable contains eight conductors, arranged in
four twisted pairs, and terminated with an RJ45 type connector. A normal straight-through UTP
Ethernet cable follows the EIA568B standard wiring as described below in Table B-1.
Table B-1. UTP Ethernet cable wiring, straight-through
Pin Wire color Signal
1 Orange/White Transmit (Tx) +
2 Orange Transmit (Tx) -
3 Green/White Receive (Rx) +
4 Blue
5 Blue/White
6 Green Receive (Rx) -
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Category 5 Cable Quality
Category 5 distributed cable that meets ANSI/EIA/TIA-568-A building wiring standards can be a
maximum of 328 feet (ft.) or 100 meters (m) in length, divided as follows:
20 ft. (6 m) between the hub and the patch panel (if used)
295 ft. (90 m) from the wiring closet to the wall outlet
10 ft. (3 m) from the wall outlet to the desktop device
The patch panel and other connecting hardware must meet the requirements for 100 Mbps
operation (Category 5). Only 0.5 inch (1.5 cm) of untwist in the wire pair is allowed at any
termination point.
A twisted pair Ethernet network operating at 10 Mbits/second (10BASE-T) will often tolerate low
quality cables, but at 100 Mbits/second (10BASE-Tx) the cable must be rated as Category 5, or
Cat 5, by the Electronic Industry Association (EIA). This rating will be printed on the cable jacket.
A Category 5 cable will meet specified requirements regarding loss and crosstalk. In addition,
there are restrictions on maximum cable length for both 10 and 100 Mbits/second networks.
Inside Twisted Pair Cables
For two devices to communicate, the transmitter of each device must be connected to the receiver
of the other device. The crossover function is usually implemented internally as part of the
circuitry in the device. Computers and workstation adapter cards are usually media-dependent
interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as
media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports. Auto
Uplink technology automatically senses which connection, MDI or MDI-X, is needed and makes
the right connection.
Figure B-4 illustrates straight-through twisted pair cable.
7 Brown/White
8 Brown
Table B-1. UTP Ethernet cable wiring, straight-through (continued)
Pin Wire color Signal
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Figure B-4: Straight-Through Twisted-Pair Cable
Figure B-5 illustrates crossover twisted pair cable.
Figure B-5: Crossover Twisted-Pair Cable
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The wireless router incorporates Auto UplinkTM technology (also called MDI/MDIX). Each
LOCAL Ethernet port will automatically sense whether the Ethernet cable plugged into the port
should have a normal connection (e.g. connecting to a computer) or an uplink connection (e.g.
connecting to a router, switch, or hub). That port will then configure itself to the correct
configuration. This feature also eliminates the need to worry about crossover cables, as Auto
UplinkTM will accommodate either type of cable to make the right connection.
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Record Your Internet Connection Information
Print this page. Fill in the configuration parameters from your Internet Service Provider (ISP).
ISP Login Name: The login name and password are case sensitive and must be entered exactly as
given by your ISP. Some ISPs use your full e-mail address as the login name. The Service Name is
not required by all ISPs. If you connect using a login name and password, enter the following:
Login Name: ______________________________
Password: ____________________________
Service Name: _____________________________
Fixed or Static IP Address: If you have a static IP address, record the following information. For
example, 169.254.141.148 could be a valid IP address.
Fixed or Static Internet IP Address: ______ ______ ______ ______
Gateway IP Address: ______ ______ ______ ______
Subnet Mask: ______ ______ ______ ______
ISP DNS Server Addresses: If you were given DNS server addresses, fill in the following:
Primary DNS Server IP Address: ______ ______ ______ ______
Secondary DNS Server IP Address: ______ ______ ______ ______
Host and Domain Names: Some ISPs use a specific host or domain name like CCA7324-A or
home. If you haven’t been given host or domain names, you can use the following examples as a
guide:
• If your main e-mail account with your ISP is aaa@yyy.com aaa, then use as your host name.
Your ISP might call this your account, user, host, computer, or system name.
• If your ISP’s mail server is mail.xxx.yyy.com, then use xxx.yyy.com as the domain name.
ISP Host Name: _________________________ ISP Domain Name: _______________________
Preparing Your Computers for TCP/IP Networking
Computers access the Internet using a protocol called TCP/IP (Transmission Control Protocol/
Internet Protocol). Each computer on your network must have TCP/IP installed and selected as its
networking protocol. If a Network Interface Card (NIC) is already installed in your computer, then
TCP/IP is probably already installed as well.
Most operating systems include the software components you need for networking with TCP/IP:
• Windows® 95 or later includes the software components for establishing a TCP/IP network.
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• Windows 3.1 does not include a TCP/IP component. You need to purchase a third-party TCP/
IP application package such as NetManage Chameleon.
• Macintosh Operating System 7 or later includes the software components for establishing a
TCP/IP network.
• All versions of UNIX or Linux include TCP/IP components. Follow the instructions provided
with your operating system or networking software to install TCP/IP on your computer.
In your IP network, each computer and the router must be assigned a unique IP addresses. Each
computer must also have certain other IP configuration information such as a subnet mask
(netmask), a domain name server (DNS) address, and a default gateway address. In most cases,
you should install TCP/IP so that the computer obtains its specific network configuration
information automatically from a DHCP server during bootup. For a detailed explanation of the
meaning and purpose of these configuration items, refer to “Appendix B, “Network, Routing,
Firewall, and Basics.”
The wireless router is shipped preconfigured as a DHCP server. The router assigns the following
TCP/IP configuration information automatically when the PCs are rebooted:
• PC or workstation IP addresses—192.168.1.2 through 192.168.1.254
• Subnet mask—255.255.255.0
• Gateway address (the router)—192.168.1.1
These addresses are part of the IETF-designated private address range for use in private networks.
Configuring Windows 95, 98, and Me for TCP/IP Networking
As part of the PC preparation process, you need to manually install and configure TCP/IP on each
networked PC. Before starting, locate your Windows CD; you may need to insert it during the
TCP/IP installation process.
Install or Verify Windows Networking Components
To install or verify the necessary components for IP networking:
1. On the Windows taskbar, click the Start button, point to Settings, and then click Control Panel.
2. Double-click the Network icon.
The Network window opens, which displays a list of installed components:
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You must have an Ethernet adapter, the TCP/IP protocol, and Client for Microsoft Networks.
If you need to install a new adapter, follow these steps:
a. Click the Add button.
b. Select Adapter, and then click Add.
c. Select the manufacturer and model of your Ethernet adapter, and then click OK.
If you need TCP/IP:
a. Click the Add button.
b. Select Protocol, and then click Add.
c. Select Microsoft.
d. Select TCP/IP, and then click OK.
Note: It is not necessary to remove any other network components shown in the
Network window in order to install the adapter, TCP/IP, or Client for Microsoft
Networks.
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If you need Client for Microsoft Networks:
a. Click the Add button.
b. Select Client, and then click Add.
c. Select Microsoft.
d. Select Client for Microsoft Networks, and then click OK.
3. Restart your PC for the changes to take effect.
Enabling DHCP to Automatically Configure TCP/IP Settings in
Windows 95B, 98, and Me
After the TCP/IP protocol components are installed, each PC must be assigned specific
information about itself and resources that are av The simplest way to ailable on its network.
configure this information is to allow the PC to obtain the information from a DHCP server in the
network.
You will find there are many similarities in the procedures for different Windows systems
when using DHCP to configure TCP/IP.
The following steps will walk you through the configuration process for each of these
versions of Windows.
Locate your icon.Network Neighborhood
• If the Network Neighborhood icon is on the Windows desktop, position your mouse
pointer over it and right-click your mouse button.
• If the icon is not on the desktop,
• Click Start on the task bar located at the bottom left of the window.
• Choose Settings, and then Control Panel.
• Locate the Network Neighborhood icon and click on it. This will open the Network
panel as shown below.
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Verify the following settings as shown:
• Client for Microsoft Network exists
• Ethernet adapter is present
• TCP/IP is present
• Primary Network Logon is set to
Windows logon
Click on the Properties button. The
following TCP/IP Properties window will
display.
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Selecting Windows’ Internet Access Method
1. On the Windows taskbar, click the Start button, point to Settings, and then click Control Panel.
2. Double-click the Internet Options icon.
3. Select “I want to set up my Internet connection manually” or “I want to connect through a
Local Area Network” and click Next.
4. Select “I want to connect through a Local Area Network” and click Next.
5. Uncheck all boxes in the LAN Internet Configuration screen and click Next.
6. Proceed to the end of the Wizard.
Verifying TCP/IP Properties
After your PC is configured and has rebooted, you can check the TCP/IP configuration using the
utility winipcfg.exe:
1. On the Windows taskbar, click the Start button, and then click Run.
• By default, the IP Address tab is open on
this window.
• Verify the following:
Obtain an IP address automatically is
selected. If not selected, click in the radio
button to the left of it to select it. This
setting is required to enable the DHCP server
to automatically assign an IP address.
• Click OK to continue.
Restart the PC.
Repeat these steps for each PC with this
version of Windows on your network.
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DHCP Configuration of TCP/IP in Windows XP, 2000, or NT4
You will find there are many similarities in the procedures for different Windows systems when
using DHCP to configure TCP/IP.
The following steps will walk you through the configuration process for each of these versions of
Windows.
DHCP Configuration of TCP/IP in Windows XP
Locate your Network Neighborhood icon.
• Select Control Panel from the Windows XP new Start Menu.
• Select the Network Connections icon on the Control Panel. This will take you to the next
step.
• Now the Network Connection window
displays.
The Connections List that shows all the
network connections set up on the PC,
located to the right of the window.
• Right-click on the Connection you will
use and choose Status.
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• Now you should be at the Local Area
Network Connection Status window. This
box displays the connection status, duration,
speed, and activity statistics.
• Administrator logon access rights are needed
to use this window.
• Click the Properties button to view details
about the connection.
• The TCP/IP details are presented on the
Support tab page.
• Select Internet Protocol, and click
Properties to view the configuration
information.
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DHCP Configuration of TCP/IP in Windows 2000
Once again, after you have installed the network card, TCP/IP for Windows 2000 is configured.
TCP/IP should be added by default and set to DHCP without your having to configure it.
However, if there are problems, follow these steps to configure TCP/IP with DHCP for Windows
2000.
• Verify that the Obtain an IP address
automatically radio button is selected.
• Verify that Obtain DNS server address
automatically radio button is selected.
• Click the OK button.
This completes the DHCP configuration of TCP/
IP in Windows XP.
Repeat these steps for each PC with this version
of Windows on your network.
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• The default gateway is 192.168.1.1
4. Type exit
Configuring the Macintosh for TCP/IP Networking
Beginning with Macintosh Operating System 7, TCP/IP is already installed on the Macintosh. On
each networked Macintosh, you will need to configure TCP/IP to use DHCP.
MacOS 8.6 or 9.x
1. From the Apple menu, select Control Panels, then TCP/IP.
The TCP/IP Control Panel opens:
2. From the “Connect via” box, select your Macintosh’s Ethernet interface.
3. From the “Configure” box, select Using DHCP Server.
You can leave the DHCP Client ID box empty.
4. Close the TCP/IP Control Panel.
5. Repeat this for each Macintosh on your network.
MacOS X
1. From the Apple menu, choose System Preferences, then Network.
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2. If not already selected, select Built-in Ethernet in the Configure list.
3. If not already selected, Select Using DHCP in the TCP/IP tab.
4. Click Save.
Verifying TCP/IP Properties for Macintosh Computers
After your Macintosh is configured and has rebooted, you can check the TCP/IP configuration by
returning to the TCP/IP Control Panel. From the Apple menu, select Control Panels, then TCP/IP.
The panel is updated to show your settings, which should match the values below if you are using
the default TCP/IP settings that NETGEAR recommends:
• The IP Address is between 192.168.1.2 and 192.16810.254
• The Subnet mask is 255.255.255.0
• The Router address is 192.168.1.1
If you do not see these values, you may need to restart your Macintosh or you may need to switch
the “Configure” setting to a different option, then back again to “Using DHCP Server”.
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Verifying the Readiness of Your Internet Account
For broadband access to the Internet, you need to contract with an Internet service provider (ISP)
for a single-user Internet access account using a cable modem or DSL modem. This modem must
be a separate physical box (not a card) and must provide an Ethernet port intended for connection
to a Network Interface Card (NIC) in a computer. Your router does not support a USB-connected
broadband modem.
For a single-user Internet account, your ISP supplies TCP/IP configuration information for one
computer. With a typical account, much of the configuration information is dynamically assigned
when your PC is first booted up while connected to the ISP, and you will not need to know that
dynamic information.
In order to share the Internet connection among several computers, your router takes the place of
the single PC, and you need to configure it with the TCP/IP information that the single PC would
normally use. When the router’s Internet port is connected to the broadband modem, the router
appears to be a single PC to the ISP. The router then allows the PCs on the local network to
masquerade as the single PC to access the Internet through the broadband modem. The method
used by the router to accomplish this is called Network Address Translation (NAT) or IP
masquerading.
Are Login Protocols Used?
Some ISPs require a special login protocol, in which you must enter a login name and password in
order to access the Internet. If you normally log in to your Internet account by running a program
such as WinPOET or EnterNet, then your account uses PPP over Ethernet (PPPoE).
When you configure your router, you will need to enter your login name and password in the
router’s configuration menus. After your network and router are configured, the router will
perform the login task when needed, and you will no longer need to run the login program from
your PC. It is not necessary to uninstall the login program.
What Is Your Configuration Information?
More and more, ISPs are dynamically assigning configuration information. However, if your ISP
does not dynamically assign configuration information but instead used fixed configurations, your
ISP should have given you the following basic information for your account:
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• An IP address and subnet mask
• A gateway IP address, which is the address of the ISP’s router
• One or more domain name server (DNS) IP addresses
• Host name and domain suffix
For example, your account’s full server names may look like this:
mail.xxx.yyy.com
In this example, the domain suffix is xxx.yyy.com.
If any of these items are dynamically supplied by the ISP, your router automatically acquires them.
If an ISP technician configured your PC during the installation of the broadband modem, or if you
configured it using instructions provided by your ISP, you need to copy the configuration
information from your PC’s Network TCP/IP Properties window or Macintosh TCP/IP Control
Panel before reconfiguring your PC for use with the router. These procedures are described next.
Obtaining ISP Configuration Information for Windows Computers
As mentioned above, you may need to collect configuration information from your PC so that you
can use this information when you configure the wireless router. Following this procedure is only
necessary when your ISP does not dynamically supply the account information.
To get the information you need to configure the router for Internet access:
1. On the Windows taskbar, click the Start button, point to Settings, and then click Control Panel.
2. Double-click the Network icon.
The Network window opens, which displays a list of installed components.
3. Select TCP/IP, and then click Properties.
The TCP/IP Properties dialog box opens.
4. Select the IP Address tab.
If an IP address and subnet mask are shown, write down the information. If an address is
present, your account uses a fixed (static) IP address. If no address is present, your account
uses a dynamically-assigned IP address. Click “Obtain an IP address automatically”.
5. Select the Gateway tab.
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Restarting the Network
Once you’ve set up your computers to work with the router, you must reset the network for the
devices to be able to communicate correctly. Restart any computer that is connected to the firewall.
After configuring all of your computers for TCP/IP networking and restarting them, and
connecting them to the local network of your wireless router, you are ready to access and
configure the router.
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Wireless Networking Basics D-1
April 2006
Appendix D
Wireless Networking Basics
This chapter provides an overview of Wireless networking.
Wireless Networking Overview
The wireless router conforms to the Institute of Electrical and Electronics Engineers (IEEE)
802.11b and 802.11g standards for wireless LANs (WLANs). On an 802.11b or g wireless link,
data is encoded using direct-sequence spread-spectrum (DSSS) technology and is transmitted in
the unlicensed radio spectrum at 2.5GHz. The maximum data rate for the 802.11b wireless link is
11 Mbps, but it will automatically back down from 11 Mbps to 5.5, 2, and 1 Mbps when the radio
signal is weak or when interference is detected. The 802.11g auto rate sensing rates are 1, 2, 5.5, 6,
9, 12, 18, 24, 36, 48, and 54 Mbps.
The 802.11 standard is also called Wireless Ethernet or Wi-Fi by the Wireless Ethernet
Compatibility Alliance (WECA, see http://www.wi-fi.net), an industry standard group promoting
interoperability among 802.11 devices. The 802.11 standard offers two methods for configuring a
wireless network - ad hoc and infrastructure.
Infrastructure Mode
With a wireless Access Point, you can operate the wireless LAN in the infrastructure mode. This
mode provides wireless connectivity to multiple wireless network devices within a fixed range or
area of coverage, interacting with wireless nodes via an antenna.
In the infrastructure mode, the wireless access point converts airwave data into wired Ethernet
data, acting as a bridge between the wired LAN and wireless clients. Connecting multiple Access
Points via a wired Ethernet backbone can further extend the wireless network coverage. As a
mobile computing device moves out of the range of one access point, it moves into the range of
another. As a result, wireless clients can freely roam from one Access Point domain to another and
still maintain seamless network connection.
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Ad Hoc Mode (Peer-to-Peer Workgroup)
In an ad hoc network, computers are brought together as needed; thus, there is no structure or fixed
points to the network - each node can generally communicate with any other node. There is no
Access Point involved in this configuration. This mode enables you to quickly set up a small
wireless workgroup and allows workgroup members to exchange data or share printers as
supported by Microsoft networking in the various Windows operating systems. Some vendors also
refer to ad hoc networking as peer-to-peer group networking.
In this configuration, network packets are directly sent and received by the intended transmitting
and receiving stations. As long as the stations are within range of one another, this is the easiest
and least expensive way to set up a wireless network.
Network Name: Extended Service Set Identification (ESSID)
The Extended Service Set Identification (ESSID) is one of two types of Service Set Identification
(SSID). In an ad hoc wireless network with no access points, the Basic Service Set Identification
(BSSID) is used. In an infrastructure wireless network that includes an access point, the ESSID is
used, but may still be referred to as SSID.
An SSID is a thirty-two character (maximum) alphanumeric key identifying the name of the
wireless local area network. Some vendors refer to the SSID as network name. For the wireless
devices in a network to communicate with each other, all devices must be configured with the
same SSID.
The ESSID is usually broadcast in the air from an access point. The wireless station sometimes can
be configured with the ESSID ANY. This means the wireless station will try to associate with
whichever access point has the stronger radio frequency (RF) signal, providing that both the access
point and wireless station use Open System authentication.
Authentication and WEP Data Encryption
The absence of a physical connection between nodes makes the wireless links vulnerable to
eavesdropping and information theft. To provide a certain level of security, the IEEE 802.11
standard has defined these two types of authentication methods:
• Open System. With Open System authentication, a wireless computer can join any network
and receive any messages that are not encrypted.
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2. The access point authenticates the station.
3. The station associates with the access point and joins the network.
This process is illustrated below.
Figure 7-1: Open system authentication
Shared Key Authentication
The following steps occur when two devices use Shared Key Authentication:
1. The station sends an authentication request to the access point.
2. The access point sends challenge text to the station.
3. The station uses its configured 64-bit or 128-bit default key to encrypt the challenge text, and
sends the encrypted text to the access point.
4. The access point decrypts the encrypted text using its configured WEP Key that corresponds
to the station’s default key. The access point compares the decrypted text with the original
challenge text. If the decrypted text matches the original challenge text, then the access point
and the station share the same WEP Key and the access point authenticates the station.
5. The station connects to the network.
If the decrypted text does not match the original challenge text (the access point and station do not
share the same WEP Key), then the access point will refuse to authenticate the station and the
station will be unable to communicate with either the 802.11 network or Ethernet network.
INT ER NET L OC AL
ACT
1 2 3 4 5 6 7 8
LNK
LNK/ACT
100
Cable/DSL ProSafeWirelessVPNSecurityFirewall
MODEL
FVM318
PWR TEST
W L AN
Enable
Access Point
1) Authentication request sent to AP
2) AP authenticates
3) Client connects to network
802.11b Authentication
Open System Steps
Cable or
DLS modem
Client
attempting
to connect
54 Mbps Wireless Router WGR614v7 Reference Manual
D-12 Wireless Networking Basics
April 2006
WPA/WPA2 Authentication: Enterprise-level User
Authentication via 802.1x/EAP and RADIUS
Figure 4-3: WPA/WPA2 Overview
IEEE 802.1x offers an effective framework for authenticating and controlling user traffic to a
protected network, as well as providing a vehicle for dynamically varying data encryption keys via
EAP from a RADIUS server, for example. This framework enables using a central authentication
server, which employs mutual authentication so that a rogue wireless user does not join the
network.
It is important to note that 802.1x does not provide the actual authentication mechanisms. When
using 802.1x, the EAP type, such as Transport Layer Security (EAP-TLS), or EAP Tunneled
Transport Layer Security (EAP-TTLS), defines how the authentication takes place.
Note: For environments with a Remote Authentication Dial-In User Service (RADIUS)
infrastructure, WPA supports Extensible Authentication Protocol (EAP). For environments
without a RADIUS infrastructure, WPA supports the use of a pre-shared key.
Together, these technologies provide a framework for strong user authentication.
Windows XP implements 802.1x natively, and several NETGEAR switch and wireless access
point products support 802.1x.
Certificate
Authority
(for
example
Win Server,
VeriSign)
WPA/WPA2
enabled
wireless
client with
“supplicant”
TCP/IP
Ports Closed
Until
Authenticated RADIUS Server
Wired Network with Optional
802.1x Port Based Network
Access Control
WPA/WPA2
enabled
Access Point
using
pre-shared key
or 802.1x
TCP/IP
Ports Opened
After
Authenticated
Wireless LAN
Login
Authentication
Product specificaties
| Merk: | Netgear |
| Categorie: | Router |
| Model: | WGR614v7 |
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