NETGEAR CG814WG V2 Reference Manual
  1. Manuals
  2. Brands
  3. NETGEAR Manuals
  4. Gateway
  5. CG814WG V2
  6. Reference manual

NETGEAR CG814WG V2 Reference Manual

Wireless cable modem gateway
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Reference Manual for the
Wireless Cable Modem
Gateway CG814WG v2
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Phone 1-888-NETGEAR
202-10074-01
January 2005

Advertisement

Table of Contents
loading

Related Manuals for NETGEAR CG814WG V2

Summary of Contents for NETGEAR CG814WG V2

  • Page 1 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 NETGEAR, Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA Phone 1-888-NETGEAR 202-10074-01 January 2005...
  • Page 2 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.

  • Page 3: Technical Support

    Certificate of the Manufacturer/Importer It is hereby certified that the CG814WG v2 Wireless Cable Modem Gateway 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.

  • Page 5: Table Of Contents

    Connecting the Gateway to the Internet ................3-1 What You Will Need Before You Begin ................3-1 Hardware Requirements ..................3-1 LAN Configuration Requirements ................3-1 Internet Configuration Requirements ...............3-2 Connecting the CG814WG v2 Gateway .................3-2 Chapter 4 Wireless Configuration......................4-1 Considerations For A Wireless Network .................4-1 Implement Appropriate Security ................4-1...
  • Page 6 Restricting Wireless Access by MAC Address ............4-4 Configuring Wired Equivalent Privacy (WEP) ............4-6 Chapter 5 Protecting Your Network .....................5-1 Protecting Access to Your CG814WG v2 Gateway ............5-1 Blocking Keywords, Sites, and Services ................5-2 Blocking Keywords and Domains ................5-3 Using MAC Filtering ......................5-4 Blocking Access by Time of Day ................5-6...
  • Page 7 Chapter 7 Troubleshooting ........................7-1 Basic Functions ......................7-1 Power LED Not On ....................7-2 All LEDs Stay On ......................7-2 Local Link LEDs Not On ...................7-2 Cable Link LED 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 ..........7-4 Testing the LAN Path to Your Gateway ..............7-4 Testing the Path from Your PC to a Remote Device ..........7-5...
  • Page 8 Ad Hoc Mode (Peer-to-Peer Workgroup) .............. B-12 Network Name: Extended Service Set Identification (ESSID) ......B-12 Authentication and WEP ....................B-13 802.11b Authentication ..................B-13 Open System Authentication ................. B-14 Shared Key Authentication ..................B-14 Overview of WEP Parameters ................B-15 Key Size ........................
  • Page 9 MacOS 8.6 or 9.x ....................C-16 MacOS X ....................... C-16 Verifying TCP/IP Properties for Macintosh Computers ......... C-17 Verifying the Readiness of Your Internet Account ............C-17 Are Login Protocols Used? ................... C-18 What Is Your Configuration Information? .............. C-18 Obtaining ISP Configuration Information for Windows Computers .......
  • Page 10 Contents...

  • Page 11: About This Manual

    Chapter 1 About This Manual Congratulations on your purchase of the CG814WG v2 Wireless Cable Modem Gateway. The CG814WG v2 provides connection for multiple personal computers to the Internet. It connects directly to your cable line using an embedded DOCSIS 2.0 cable modem.
  • Page 12 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 How to Print this Manual To print this manual you can choose one of the following several options, according to your needs. • Printing a Chapter. Use the link at the top right of any page.

  • Page 13: Chapter 2 Introduction

    DOCSIS 2.0, guaranteeing that it will work with your local cable service provider. A Powerful, True Firewall Unlike simple Internet sharing NAT routers, the CG814WG v2 is a true firewall, using stateful packet inspection to defend against hacker attacks. Its firewall features include:...

  • Page 14: Content Filtering

    Wireless access can be restricted by MAC address. Configurable Auto Uplink™ Ethernet Connection With its internal 4-port 10/100 switch, the CG814WG v2 can connect to either a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network. Both the local LAN and the Internet WAN interfaces are autosensing and capable of full-duplex or half-duplex operation.

  • Page 15: Usb Port

    Dynamic Host Configuration Protocol (DHCP). This feature greatly simplifies configuration of PCs on your local network. Easy Installation and Management You can install, configure, and operate the CG814WG v2 within minutes after connecting it to the network. The following features simplify installation and management tasks: •...

  • Page 16: What's In The Box

    These functions allow you to test Internet connectivity and reboot the gateway. You can use these diagnostic functions directly from the CG814WG v2 when your are connect on the LAN or when you are connected over the Internet via the remote management function.
  • Page 17 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 You can use some of the LEDs to verify connections. Table 2-1 lists and describes each LED on the front panel of the CG814WG v2 Gateway. These LEDs are green when lit. Table 2-1. LED Descriptions Label...

  • Page 18: The Gateway's Rear Panel

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 The Gateway’s Rear Panel The rear panel of the CG814WG v2 (Figure 2-2) contains the connections identified below. wireless antenna USB port reset button coaxial cable to your cable service provider...

  • Page 19: Connecting The Gateway To The Internet

    Chapter 3 Connecting the Gateway to the Internet This chapter describes how to set up the CG814WG v2 Gateway on your Local Area Network (LAN), connect to the Internet and perform basic configuration. What You Will Need Before You Begin You need to prepare these three things before you can connect your gateway to the Internet: 1.

  • Page 20: Internet Configuration Requirements

    Connect the line from your cable service provider to the cable connector of the gateway. • Connect the power adapter. Your computer will attach to either the Ethernet, USB or wireless ports on the CG814WG v2 Gateway. 1. Connect the Gateway.
  • Page 21 — If you will connect with the USB cable, skip to step d below. Note: Set up the CG814WG v2 Gateway using either an Ethernet or USB connection to your computer first, then configure the wireless settings. Detailed instructions on configuring your wireless devices for TCP/IP networking are provided in the next chapter.
  • Page 22 Browse to the Resource CD and install the USB driver by clicking through the Windows wizard prompts. e. Plug in your CG814WG v2 and wait about 30 seconds for the lights to stop blinking. Now, turn on your computer. If software usually logs you in to your Internet connection, do not run that software or cancel it if it starts automatically.
  • Page 23 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 2. Log in to the Gateway. Note: To connect to the gateway, your computer needs to be configured to obtain an IP address automatically via DHCP. For instructions on how to do this, please see Appendix C, “Preparing Your...

  • Page 24: Connect To The Internet

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 3. Connect to the Internet. a. You are now connected to the gateway. Click the Basic Settings link on the upper left of the main menu. You are now connected to the gateway’s Basic Settings page, shown below.

  • Page 25: Wireless Configuration

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Chapter 4 Wireless Configuration This chapter describes how to configure the wireless features of your CG814WG v2 Wireless Cable Modem Gateway. Note: If you are configuring the gateway from a wireless PC and you change the gateway’s SSID, channel, or WEP settings, you will lose your wireless connection when...

  • Page 26: Observe Placement And Range Guidelines

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Observe Placement and Range Guidelines The operating distance or range of your wireless connection can vary significantly based on the physical placement of the wireless gateway. Note: Failure to follow these guidelines can result in significant performance...

  • Page 27: Configuring Wireless Settings

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Configuring Wireless Settings To configure the Wireless interface of your gateway, click on the Wireless Settings heading in the Setup section of the browser interface. The Wireless Settings menu will appear, as shown below:...

  • Page 28: Wireless Network Settings

    Enter a Service Set ID (SSID) value of up to 32 alphanumeric characters. The same SSID must be assigned to all wireless devices in your network. The default SSID is Wireless, but NETGEAR strongly recommends that you change your network’s SSID to a different value. •...
  • Page 29 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Figure 4-2: Wireless Access List menu The Access List displays a list of MAC addresses that will be allowed to connect to the gateway. These PCs must also have the correct SSID and WEP settings. You can add MAC addresses to the...

  • Page 30: Configuring Wired Equivalent Privacy (Wep)

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 4. Click Add. 5. When you have finished entering MAC addresses, click Apply to save the Access List and return to the Wireless Settings menu. To delete a MAC address from the table, click on it to select it, then click the Delete button.

  • Page 31: Protecting Your Network

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Chapter 5 Protecting Your Network This chapter describes how to use the firewall features of the CG814WG v2 Wireless Cable Modem Gateway to protect your network. Protecting Access to Your CG814WG v2 Gateway For security reasons, the gateway has its own user name and password.

  • Page 32: Blocking Keywords, Sites, And Services

    With its content filtering feature, the CG814WG v2 Gateway prevents objectionable content from reaching your PCs. The CG814WG v2 allows you to control It also has the access to Internet content by screening for keywords within Web addresses.

  • Page 33: Blocking Keywords And Domains

    Blocking Keywords and Domains Note: The Block Sites feature must be configured while logged in as a parent. The CG814WG v2 Gateway allows you to restrict access to Internet content based on functions such as Web address keywords and Web domains.

  • Page 34: Using Mac Filtering

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 3. To enable keyword blocking or Domain Blocking, check the appropriate Enable box. 4. Enter Keywords into the Keyword List by typing then in the Add Keyword box, then, click Add Keyword.
  • Page 35 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 1. Log in to the gateway at its default LAN address of http://192.168.0.1 with its parent default User Name of superuser, default password of password, or using whatever Password and LAN address you have chosen for the gateway in parent mode.

  • Page 36: Blocking Access By Time Of Day

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Blocking Access by Time of Day The default blocking schedule is to block access all day. However, you can also block access according to a daily schedule for each PC individually.

  • Page 37: Port Forwarding

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 To configure outbound rules on the CG814WG v2, click the Port Blocking link on the Advanced section of the main menu. Figure 5-5: Port Blocking menu • To block outbound traffic, select the service you would like to block from the drop-down list of predefined services.
  • Page 38 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Note: Some residential broadband ISP accounts do not allow you to run any server processes (such as a Web or FTP server) from your location. Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location.

  • Page 39: Using Port Triggering

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 If the service you would like to forward is not in the predefined list, you can add a custom service. Enter the range of ports you would like to forward and select whether the ports are TCP, UDP or Both.

  • Page 40: Setting Up A Default Dmz Host

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 To configure Port Triggering: 1. In the Trigger Range, enter the outbound ports that will be monitored for activity. This will be the “trigger”. 2. In the Target Range, enter the inbound ports that should be forwarded when the trigger occurs.

  • Page 41: Respond To Ping On Internet Wan Port

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Incoming traffic from the Internet is normally discarded by the gateway unless the traffic is a response to one of your local computers or a service that you have configured in the Port Forwarding or Port Triggering menu.
  • Page 42 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 5-12 Protecting Your Network...

  • Page 43: Managing Your Network

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Chapter 6 Managing Your Network This chapter describes how to perform network management tasks with your CG814WG v2 Wireless Cable Modem Gateway. Network Status Information The CG814W provides a variety of status and usage information which is discussed below.
  • Page 44 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 This screen shows the following parameters: Table 6-1. 3.2 - Router Status Fields Field Description Information Standard Specification The specification to which the gateway’s cable interface is compatible. Compliant Hardware Version The hardware version of the gateway.

  • Page 45: Connection Status

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Connection Status From the main menu, under Maintenance, select Connection to view the screen in Figure 6-2. Figure 6-2: Connection screen This screen shows detailed information about the status of the connection to your cable service provider that can be used for troubleshooting.

  • Page 46: Configuring Lan Ip Settings

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Configuring LAN IP Settings The LAN IP Setup menu allows configuration of LAN IP services such as the IP address of the gateway and DHCP. These features can be found under the Advanced heading in the main menu in the LAN IP menu.

  • Page 47: Using The Gateway As A Dhcp Server

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Using the Gateway as a DHCP Server By default, the gateway 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.

  • Page 48: Viewing And Emailing Logged Information

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Viewing and Emailing Logged Information The gateway will log security-related events such as denied incoming service requests and hacker probes. You can enable e-mail notification to receive these logs in an e-mail message. Log entries...

  • Page 49: Erasing Configuration

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Erasing Configuration The configuration settings of the CG814WG v2 Gateway are stored in a configuration file in the gateway. This file can be reverted to factory default settings. The procedures below explain how to do these tasks.

  • Page 50: Running Diagnostic Utilities

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Running Diagnostic Utilities The CG814WG v2 Gateway has a diagnostics feature. You can use the diagnostics menu to test connectivity to PC using the Ping command: From the main menu of the browser interface, under the Maintenance heading, select the Diagnostics menu, shown below.

  • Page 51: Enabling Remote Management Access

    Using the Remote Management page, you can allow the Remote Management feature to be active after a Factory Default Reset. If you do not select this checkbox and use the Erase button to revert to the Factory Default settings, you will not be able to remotely access your CG814WG v2. Managing Your Network...
  • Page 52 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 6-10 Managing Your NetworkSoftware Version BNX v1.2...

  • Page 53: Chapter 7 Troubleshooting

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Chapter 7 Troubleshooting This chapter gives information about troubleshooting your CG814WG v2 Wireless Cable Modem Gateway. For the common problems listed, go to the section indicated. • Is the gateway on? •...

  • Page 54: Power Led Not On

    • Check that you are using the 12VDC power adapter supplied by NETGEAR for this product. If the error persists, you have a hardware problem and should contact technical support.

  • Page 55: Troubleshooting The Web Configuration Interface

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 • Remove any excessive splitters you may have on your cable line. It may be necessary to run a “home run” back to the point where the cable enters your home.

  • Page 56: Troubleshooting The Isp Connection

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Troubleshooting the ISP Connection If your gateway is unable to access the Internet and your Cable Link LED is on, you may need to register the Cable MAC Address and/or Device MAC Address of you gateway with your cable service provider.

  • Page 57: Testing The Path From Your Pc To A Remote Device

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 — Make sure the LAN port LED is on. If the LED is off, follow the instructions in “Local Link LEDs Not On” on page 7-2. — Check that the corresponding Link LEDs are on for your network interface card and for the hub ports (if any) that are connected to your workstation and gateway.
  • Page 58 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 TroubleshootingSoftware Version BNX v1.2...

  • Page 59: Technical Specifications

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Appendix A Technical Specifications This appendix provides technical specifications for the CG814WG v2 Wireless Cable Modem Gateway. Network Protocol and Standards Compatibility Data and Routing Protocols: TCP/IP DHCP server and client...
  • Page 60 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Technical Specifications...

  • Page 61: Networks, Routing, And Firewall Basics

    Routers vary in performance and scale, number of routing protocols supported, and types of physical WAN connection they support. The CG814WG v2 Wireless Cable Modem Gateway is a small office router that routes the IP protocol over a single-user broadband connection.

  • Page 62: Routing Information Protocol

    Information Protocol (RIP). Using RIP, routers periodically update one another and check for changes to add to the routing table. The CG814WG v2 Gateway supports both the older RIP-1 and the newer RIP-2 protocols. Among other improvements, RIP-2 supports subnet and multicast protocols. RIP is not required for most home applications.
  • Page 63 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Class A Network Node Class B Network Node Class C Network Node 7261 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.

  • Page 64: Netmask

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 This addressing structure allows IP addresses to uniquely identify each physical network and each node on each physical network. For each unique value of the network portion of the address, the base address of the range (host address of all zeros) is known as the network address and is not usually assigned to a host.
  • Page 65 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Subnet addressing allows us to split one IP network address into smaller multiple physical networks known as subnetworks. Some of the node numbers are used as a subnet number instead.
  • Page 66 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 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.

  • Page 67: Private Ip Addresses

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 NETGEAR strongly recommends that you configure all hosts on a LAN segment to use the same netmask for the following reasons: • 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.

  • Page 68: Mac Addresses And Address Resolution Protocol

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 The following figure illustrates a single IP address operation. Private IP addresses assigned by user IP addresses assigned by ISP 192.168.0.2 192.168.0.3 192.168.0.1 172.21.15.105 Internet 192.168.0.4 192.168.0.5 7786EA 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.

  • Page 69: Related Documents

    Many of the resources on the Internet can be addressed by simple descriptive names such as 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...

  • Page 70: Ip Configuration By Dhcp

    IP addresses, along with other information (such as gateway and DNS addresses) that it may assign to the other devices on the network. The CG814WG v2 Gateway has the capacity to act as a DHCP server.

  • Page 71: Stateful Packet Inspection

    Wireless Networking Overview The CG814WG v2 Gateway conforms to the Institute of Electrical and Electronics Engineers (IEEE) 802.11b standard for wireless LANs (WLANs). On an 802.11b wireless link, data is encoded using direct-sequence spread-spectrum (DSSS) technology and is transmitted in the unlicensed radio spectrum at 2.5GHz.

  • Page 72: Ad Hoc Mode (Peer-To-Peer Workgroup

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 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.

  • Page 73: Authentication And Wep

    The 802.11b standard defines several services that govern how two 802.11b devices communicate. The following events must occur before an 802.11b Station can communicate with an Ethernet network through an access point such as the one built in to the CG814WG v2: Turn on the wireless station.

  • Page 74: Open System Authentication

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Open System Authentication The following steps occur when two devices use Open System Authentication: The station sends an authentication request to the access point. The access point authenticates the station.

  • Page 75: Overview Of Wep Parameters

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 If the decrypted text does not match the original challenge text (i.e., 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 802.11b network or Ethernet network.

  • Page 76: Key Size

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Note: Some 802.11b access points also support Use WEP for Authentication Only (Shared Key Authentication without data encryption). Key Size The IEEE 802.11b standard supports two types of WEP encryption: 40-bit and 128-bit.

  • Page 77: Wireless Channels

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Note: Whatever keys you enter for an AP, you must also enter the same keys for the client adapter in the same order. In other words, WEP key 1 on the AP must match WEP key 1 on the client adapter, WEP key 2 on the AP must match WEP key 2 on the client adapter, etc.

  • Page 78: Ethernet Cabling

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Table 7-3. 802.11 Radio Frequency Channels Channel Center Frequency Frequency Spread 2462 MHz 2449.5 MHz - 2474.5 MHz 2467 MHz 2454.5 MHz - 2479.5 MHz 2472 MHz 2459.5 MHz - 2484.5 MHz Note: The available channels supported by the wireless products in various countries are different.

  • Page 79: Uplink Switches And Crossover Cables

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Uplink Switches and Crossover Cables In the wiring table, the concept of transmit and receive are from the perspective of the PC. For example, the PC transmits on pins 1 and 2. At the hub, the perspective is reversed, and the hub receives on pins 1 and 2.
  • Page 80 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 B-20 Networks, Routing, and Firewall Basics...

  • Page 81: Preparing Your Network To Work With A Router

    Appendix C Preparing Your Network to Work with a Router This appendix describes how to prepare your network to connect to the Internet through a router and how to verify the readiness of your broadband Internet service from an Internet service provider (ISP).

  • Page 82: Internet Configuration Requirements

    — For Macintosh computers, record the settings in the TCP/IP or Network control panel. • You may also refer to the Resource CD or the NETGEAR Router ISP Guide, which provides Internet connection information for many ISPs. Once you locate your Internet configuration parameters, you may want to record them on the page below.

  • Page 83: Record Your Internet Connection Information

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 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.

  • Page 84: Preparing Your Computers For Tcp/Ip Networking

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 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.

  • Page 85: Configuring Windows 95, 98, And Me For Tcp/Ip Networking

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Configuring Windows 95, 98, and Me for TCP/IP Networking As part of the computer preparation process, you need to manually install and configure TCP/IP on each networked computer. Before starting, locate your Windows CD; you may need to insert it during the TCP/IP installation process.

  • Page 86: Enabling Dhcp To Automatically Configure Tcp/Ip Settings In Windows 95B, 98, And Me

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Installing TCP/IP 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. Installing the Client for Microsoft Networks If you need the Client for Microsoft Networks: a.
  • Page 87 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 1. Open the Network Panel • 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: —...

  • Page 88: Selecting The Windows' Internet Access Method

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 3. Verify the Properties IP Address Setting a. Click the Properties button. The TCP/IP Properties window displays as shown to the right. By default, the IP Address tab is open.

  • Page 89: Configuring Windows Nt4, 2000 Or Xp For Ip Networking

    3. From the drop-down box, select your Ethernet adapter. The window is updated to show your settings. They should match the values below if you are using the default TCP/IP settings that NETGEAR recommends for connecting through a router or gateway:...

  • Page 90: Configuring Dhcp Of Tcp/Ip In Windows Xp, 2000, Or Nt4

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Configuring DHCP of TCP/IP in Windows XP, 2000, or NT4 There are many similarities in the procedures for different Windows systems when using DHCP to configure TCP/IP. The following steps walk you through the configuration process for each of these versions of Windows.
  • Page 91 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 3. Go to Properties. a. Click the Properties button to view details about the connection. The TCP/IP details are shown on the Support tab page. b. Select “Internet Protocol”, and click Properties to view the configuration information.

  • Page 92: Dhcp Configuration Of Tcp/Ip In Windows 2000

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 DHCP Configuration of TCP/IP in Windows 2000 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.
  • Page 93 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 2. Check the Internet Protocol Properties. a. With “Internet Protocol (TCP/IP)” selected, click Properties to open the Internet Protocol (TCP/IP) Properties dialog box. b. Verify that the following items are selected: •...

  • Page 94: Dhcp Configuration Of Tcp/Ip In Windows Nt4

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 DHCP Configuration of TCP/IP in Windows NT4 Once you have installed the network card, you need to configure the TCP/IP environment for Windows NT 4.0. Follow this procedure to configure TCP/IP with DHCP in Windows NT 4.0.

  • Page 95: Verifying Tcp/Ip Properties For Windows Xp, 2000, And Nt4

    A command window opens. 3. Type ipconfig /all Your IP Configuration information is listed, and should match the values below if you are using the default TCP/IP settings that NETGEAR recommends for connecting through a router or gateway. TCP/IP Configuration...

  • Page 96: Configuring The Macintosh For Tcp/Ip Networking

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 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 need to configure TCP/IP to use DHCP.

  • Page 97: Verifying Tcp/Ip Properties For Macintosh Computers

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Verifying TCP/IP Properties for Macintosh Computers To check the TCP/IP configuration after you configured and rebooted your Macintosh, return to the TCP/IP Control Panel. From the Apple menu, select Control Panels, then TCP/IP.

  • Page 98: Are Login Protocols Used

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 In order to share the Internet connection among several computers, your router takes the place of the single computer, and you need to configure it with the TCP/IP information that the single computer would normally use.

  • Page 99: Obtaining Isp Configuration Information For Windows Computers

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 If an ISP technician configured your computer 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 computer’s Network TCP/IP Properties window or Macintosh TCP/IP...

  • Page 100: Obtaining Isp Configuration Information For Macintosh Computers

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Obtaining ISP Configuration Information for Macintosh Computers You may need configuration information from your computer in order to configure the router. You only need to collect this information if you have a static IP address (your ISP does not dynamically supply the account information).

  • Page 101: Wireless Networking Basics

    Wireless Networking Basics Wireless Networking Overview The CG814WG v2 Gateway conforms to the Institute of Electrical and Electronics Engineers (IEEE) 802.11g standard for wireless LANs (WLANs). On an 802.11 wireless link, data is encoded using direct-sequence spread-spectrum (DSSS) technology and is transmitted in the unlicensed radio spectrum at 2.5GHz.

  • Page 102: Ad Hoc Mode (Peer-To-Peer Workgroup

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 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.
  • Page 103 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 The radio frequency channels used are listed in Table D-1: Table D-1. 802.11g Radio Frequency Channels Channel Center Frequency Frequency Spread 2412 MHz 2399.5 MHz - 2424.5 MHz 2417 MHz 2404.5 MHz - 2429.5 MHz...

  • Page 104: Wep Wireless Security

    The 802.11 standard defines several services that govern how two 802.11 devices communicate. The following events must occur before an 802.11 Station can communicate with an Ethernet network through an access point such as the one built in to the CG814WG v2: Turn on the wireless station.

  • Page 105: Wep Open System Authentication

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 • Shared Key Authentication requires that the station and the access point have the same WEP Key to authenticate. These two authentication procedures are described below. WEP Open System Authentication This process is illustrated below.

  • Page 106: Wep Shared Key Authentication

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 WEP Shared Key Authentication This process is illustrated below. 802.11b Authentication Shared Key Steps Access Point 1) Authentication request sent to AP MODEL IN TER N ET W LA N...
  • Page 107 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Key Size and Configuration The IEEE 802.11 standard supports two types of WEP encryption: 40-bit and 128-bit. The 64-bit WEP data encryption method, allows for a five-character (40-bit) input. Additionally, 24 factory-set bits are added to the forty-bit input to generate a 64-bit encryption key.

  • Page 108: How To Use Wep Parameters

    Shared Key Authentication. Note: Some 802.11 access points also support Use WEP for Authentication Only (Shared Key Authentication without data encryption). However, the CG814WG v2 does not offer this option. WPA Wireless Security Wi-Fi Protected Access (WPA) is a specification of standards-based, interoperable security enhancements that increase the level of data protection and access control for existing and future wireless LAN systems.

  • Page 109: How Does Wpa Compare To Wep

    Starting in August of 2003, all new Wi-Fi certified products had to support WPA and all existing Wi-Fi certified products had one year to comply with the new standard or lose their Wi-Fi certification. NETGEAR has implemented WPA on client and access point products. As of August 2004, all Wi-Fi certified products must support WPA.

  • Page 110: How Does Wpa Compare To Ieee 802.11I

    Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 How Does WPA Compare to IEEE 802.11i? WPA is forward compatible with the IEEE 802.11i security specification currently under development. WPA is a subset of the current 802.11i draft and uses certain pieces of the 802.11i draft that were ready to bring to market in 2003, such as 802.1x and TKIP.
  • Page 111 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 The primary information conveyed in the Beacon frames is the authentication method and the cipher suite. Possible authentication methods include 802.1X and Pre-shared key. Pre-shared key is an authentication method that uses a statically configured passphrase on both the stations and the access point.

  • Page 112: Access Control

    WPA supports Extensible Authentication Protocol (EAP). For environments without a RADIUS infrastructure, WPA supports the use of a preshared 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. D-12...
  • Page 113 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Client with a WPA- enabled wireless adapter and supplicant (Win XP, Funk, For example, a For example, a Meetinghouse, etc.) WPA-enabled AP RADIUS server Figure D-4: 802.1x Authentication Sequence The access point (AP) sends Beacon Frames with WPA information elements to the stations in the service set.
  • Page 114 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 The client sends an EAP-response packet containing the identity to the authentication server. The access point responds by enabling a port for passing only EAP packets from the client to an authentication server located on the wired side of the access point.
  • Page 115 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Temporal Key Integrity Protocol (TKIP) WPA uses TKIP to provide important data encryption enhancements including a per-packet key mixing function, a message integrity check (MIC) named Michael, an extended initialization vector (IV) with sequencing rules, and a re-keying mechanism.

  • Page 116: Is Wpa Perfect

    Product Support for WPA Starting in August, 2003, NETGEAR, Inc. wireless Wi-Fi certified products will support the WPA standard. NETGEAR, Inc. wireless products that had their Wi-Fi certification approved before August, 2003 will have one year to add WPA so as to maintain their Wi-Fi certification.
  • Page 117 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 • The new WPA information element To advertise their support of WPA, wireless APs send the beacon frame with a new 802.11 WPA information element that contains the wireless AP's security configuration (encryption algorithms and wireless security configuration information).
  • Page 118 Reference Manual for the Wireless Cable Modem Gateway CG814WG v2 Changes to Wireless Client Programs Wireless client programs must be updated to permit the configuration of WPA authentication (and preshared key) and the new WPA encryption algorithms (TKIP and the optional AES component).

  • Page 119: Glossary

    Domain names are of the form of a registered entity name plus one of a number of predefined top level suffixes such as .com, .edu, .uk, etc. For example, in the address mail.NETGEAR.com, mail is a server name and NETGEAR.com is the domain.
  • Page 120 Reference Manual for the Model CG814WG v2 Wireless Cable Modem Gateway IP Address A four-byte number uniquely defining each host on the Internet. Ranges of addresses are assigned by Internic, an organization formed for this purpose. Usually written in dotted-decimal notation with periods separating the bytes (for example, 134.177.244.57).
  • Page 121 Reference Manual for the Model CG814WG v2 Wireless Cable Modem Gateway Network Address A technique by which several hosts share a single IP address for access to the Translation Internet. packet A block of information sent over a network. A packet typically contains a source and destination network address, some protocol and length information, a block of data, and a checksum.
  • Page 122 Reference Manual for the Model CG814WG v2 Wireless Cable Modem Gateway Virtual Channel Identifier. Together with the VPI, defines a Virtual Channel through an ATM network. Used by ATM switching equipment to route data through the network. Virtual Path Identifier. Together with the VCI, defines a Virtual Channel through an ATM network.

Table of Contents