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NETGEAR CG814WG Reference Manual

Wireless cable modem gateway
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Download this manual See also: Installation Manual
Reference Manual for the
Wireless Cable Modem
Gateway CG814WG
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Phone 1-888-NETGEAR
202-10074-01
February 2005

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Summary of Contents for NETGEAR CG814WG

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

  • Page 2: Safety Information

    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

    Thank you for choosing Netgear product(s). Please register online and take advantage of the technical support resources such as Netgear online knowledge base. Technical support is available 24 hours a day, seven days a week; please call your Cable Internet Service Provider.

  • 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 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 Gateway .............5-1 Blocking Keywords, Sites, and Services ................5-2 Blocking Keywords and Domains ................5-3 Using MAC Filtering ......................5-4 Using Port Blocking ......................5-6...
  • Page 7 Chapter 7 Troubleshooting ........................7-1 Basic Functions ......................7-1 Power LED Not On ....................7-2 Test LED Stays On ....................7-2 Local Link LEDs Not On ...................7-2 Cable Link LED Not On ....................7-3 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) .............. A-12 Network Name: Extended Service Set Identification (ESSID) ......A-13 Authentication and WEP ....................A-13 802.11b Authentication ..................A-13 Open System Authentication ................. A-14 Shared Key Authentication ..................A-15 Overview of WEP Parameters ................A-16 Key Size ........................
  • Page 9 Obtaining ISP Configuration Information for Windows Computers ....... A-20 Obtaining ISP Configuration Information for Macintosh Computers ..... A-21 Restarting the Network ....................A-22 Glossary..........................1-1 Contents...
  • Page 10 Contents...

  • Page 11: About This Manual

    Chapter 1 About This Manual Congratulations on your purchase of the CG814WG Wireless Cable Modem Gateway. The CG814WG 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 Model CG814WG Wireless Cable Modem Gateway About This Manual...

  • Page 13: Introduction

    (LAN), including a 4-port 10/100 Mbps Ethernet switch, a USB port and an 802.11b wireless Access Point. The CG814WG Gateway is a complete security solution that protects your network from attacks and intrusions. Unlike simple Internet sharing routers that rely on Network Address Translation (NAT) for security, the CG814WG uses Stateful Packet Inspection for Denial of Service (DoS) attack protection and intrusion detection.

  • Page 14: A Powerful, True Firewall

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway A Powerful, True Firewall Unlike simple Internet sharing NAT routers, the CG814WG is a true firewall, using stateful packet inspection to defend against hacker attacks. Its firewall features include: •...

  • Page 15: Configurable Auto Uplink™ Ethernet Connection

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Configurable Auto Uplink™ Ethernet Connection With its internal 4-port 10/100 switch, the CG814WG 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 16 These functions allow you to test Internet connectivity and reboot the gateway. You can use these diagnostic functions directly from the CG814WG when your are connect on the LAN or when you are connected over the Internet via the remote management function.

  • Page 17: What's In The Box

    — Application Notes, Tools, and other helpful information 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 product for repair.
  • Page 18 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Table 2-1. LED Descriptions Label Activity Description Power Power is supplied to the gateway. Power is not supplied to the gateway. Test A system failure has occurred. Reboot the gateway.

  • Page 19: The Gateway's Rear Panel

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway The Gateway’s Rear Panel The rear panel of the CG814WG (Figure 2-2) contains the connections identified below. Figure 2-2: CG814WG Rear Panel Viewed from left to right, the rear panel contains the following elements: •...
  • Page 20 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Introduction...

  • Page 21: Connecting The Gateway To The Internet

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Chapter 3 Connecting the Gateway to the Internet This chapter describes how to set up the CG814WG 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: A computer properly connected to the gateway as explained below.

  • Page 22: 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 Gateway. 1. Connect the Gateway.
  • Page 23 — If you will connect with the Ethernet cable, follow the instructions below. — If you will connect with the USB cable, skip to step d below. Note: Set up the CG814WG 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 24 Browse to the CD and install the USB driver by clicking through the Windows wizard prompts. Plug in your CG814WG 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 25 Reference Manual for the Model CG814WG Wireless Cable Modem 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 26 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Note: If you were unable to connect to the gateway, please refer to “Basic Functions” on page 7-1. Connecting the Gateway to the Internet...

  • Page 27: Connect To The Internet

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 3. Connect to the Internet. 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 28 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Connecting the Gateway to the Internet...

  • Page 29: Wireless Configuration

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Chapter 4 Wireless Configuration This chapter describes how to configure the wireless features of your CG814WG 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 30: Observe Placement And Range Guidelines

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 31: Configuring Wireless Settings

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 32: Wireless Access Point

    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 33 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 34: Configuring Wired Equivalent Privacy (Wep)

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway If no Device Name appears, you can type a descriptive name for the PC that you are adding. Click Add. When you have finished entering MAC addresses, click Apply to save the Access List and return to the Wireless Settings menu.

  • Page 35: Protecting Your Network

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

  • Page 36: Blocking Keywords, Sites, And Services

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

  • Page 37: Blocking Keywords And Domains

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

  • Page 38: Using Mac Filtering

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway To enable keyword blocking or Domain Blocking, check the appropriate Enable box. Enter Keywords into the Keyword List by typing then in the Add Keyword box, then, click Add Keyword.
  • Page 39 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 40: Using Port Blocking

    IP addresses, and time of day. To configure outbound rules on the CG814WG, click the Port Blocking link on the Advanced Protecting Your Network...

  • Page 41: Port Forwarding

    To delete an existing rule, select its button on the left side of the table and click Delete. Port Forwarding Because the CG814WG uses Network Address Translation (NAT), your network presents only one IP address to the Internet, and outside users cannot directly address any of your local computers.
  • Page 42 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway traffic for a particular service to one local server based on the destination port number. This is also known as Port Forwarding. 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.
  • Page 43 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Figure 5-6: Port Forwarding menu • To forward inbound traffic: Select the service you would like to forward from the drop-down list of predefined services. If the service you would like to forward is not in the predefined list, you can add a custom service.

  • Page 44: Using Port Triggering

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Using Port Triggering Port Triggering is an advanced feature that allows you to dynamically open inbound ports based on outbound traffic on different ports. This is an advanced feature that can be used for gaming and other internet applications.
  • Page 45 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway the gateway to temporarily forward port 113 to the PC that initiated the login.l Figure 5-7: Port Triggering menu, with IRC example. To configure Port Triggering: In the Trigger Range, enter the outbound ports that will be monitored for activity. This will be the “trigger”.

  • Page 46: Setting Up A Default Dmz Host

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway temporarily disable the rule, or you can select the rule and click Delete. Setting Up A Default DMZ Host The Default DMZ Server feature is helpful when using some online games and videoconferencing applications that are incompatible with NAT.
  • Page 47 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway You can use the Services page to disable certain gateway features. To disable a feature, remove the check box from its Enable check box. When Firewall Features are enabled, the gateway will perform Stateful Packet Inspection (SPI) and protect against Denial of Service (DoS) attacks.
  • Page 48 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 5-14 Protecting Your Network...

  • Page 49: Managing Your Network

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Chapter 6 Managing Your Network This chapter describes how to perform network management tasks with your CG814WG Wireless Cable Modem Gateway. Network Status Information The CG814W provides a variety of status and usage information which is discussed below.
  • Page 50 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway This screen shows the following parameters: Table 6-1. Menu 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 51: Connection Status

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 52: Configuring Lan Ip Settings

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 53: Using The Gateway As A Dhcp Server

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway The gateway is shipped preconfigured to use private IP addresses on the LAN side, and to act as a DHCP server. The gateway’s default LAN IP configuration is: • LAN IP addresses—192.168.0.1 •...

  • Page 54: Dhcp Client Lease Info

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 gateway’s LAN IP address.

  • Page 55: Viewing And Emailing Logged Information

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 56: Erasing Configuration

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Erasing Configuration The configuration settings of the CG814WG 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 57 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway From the Main Menu of the browser interface, under the Maintenance heading, select the Diagnostics menu, shown in Figure 6-5. Figure 6-5: Diagnostics menu To perform a Ping test In the Ping Target section, enter the IP address of the PC you would like to ping.

  • Page 58: Enabling Remote Management Access

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 CG814WG Gateway.

  • Page 59: Enabling Remote Management Access After A Reset

    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. Managing Your Network...
  • Page 60 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 6-12 Managing Your NetworkSoftware Version BNX v1.2...

  • Page 61: Chapter 7 Troubleshooting

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

  • Page 62: 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 63: Cable Link Led Not On

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Cable Link LED Not On If the Cable Link LED does not light when connected to your cable television cable, check the following: • Make sure that the coaxial cable connections are secure at the gateway and at the wall jack.

  • Page 64: Troubleshooting The Isp Connection

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway • 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.

  • Page 65: Testing The Path From Your Pc To A Remote Device

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway ping 192.168.0.1 Click on OK. You should see a message like this one: Pinging <IP address> with 32 bytes of data If the path is working, you see this message: Reply from <...
  • Page 66 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway — Check that your PC has the IP address of your gateway listed as the default gateway. If the IP configuration of your PC is assigned by DHCP, this information will not be visible in your PC’s Network Control Panel.

  • Page 67: Technical Specifications

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Appendix A Technical Specifications This appendix provides technical specifications for the CG814WG Wireless Cable Modem Gateway. Network Protocol and Standards Compatibility Data and Routing Protocols: TCP/IP DHCP server and client...
  • Page 68 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Local: 10BASE-T or 100BASE-Tx, RJ-45 USB 1.1 Function 802.11b Wireless Access Point Internet: DOCSIS 2.0. Downward compatible with DOCSIS 1.0 and DOCSIS 1.1. Technical Specifications...

  • Page 69: Networks, Routing, And Firewall Basics

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Appendix B Networks, Routing, and Firewall Basics This chapter provides an overview of IP networks, routing, and firewalls. Related Publications As you read this document, you may be directed to various RFC documents for further information.

  • Page 70: What Is A Router

    Information Protocol (RIP). Using RIP, routers periodically update one another and check for changes to add to the routing table. The CG814WG 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 71 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway The latter version is easier to remember and easier to enter into your computer. In addition, the 32 bits of the address are subdivided into two parts. The first part of the address identifies the network, and the second part identifies the host node or station on the network.

  • Page 72: Netmask

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway • 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.

  • Page 73: Subnet Addressing

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway As a shorter alternative to dotted-decimal notation, the netmask may also be expressed in terms of the number of ones from the left. This number is appended to the IP address, following a backward slash (/), as “/n.”...
  • Page 74 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.

  • Page 75: Private Ip Addresses

    255.255.255.248 255.255.255.252 255.255.255.254 255.255.255.255 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 76: Single Ip Address Operation Using Nat

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.

  • Page 77: Mac Addresses And Address Resolution Protocol

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.

  • Page 78: Domain Name Server

    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 Gateway has the capacity to act as a DHCP server.

  • Page 79: What Is A Firewall

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway What is a Firewall? A firewall is a device that protects one network from another, while allowing communication between the two. A firewall incorporates the functions of the NAT router, while adding features for dealing with a hacker intrusion or attack.

  • Page 80: Wireless Networking Overview

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Wireless Networking Overview The CG814WG 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 81: Network Name: Extended Service Set Identification (Essid

    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: Turn on the wireless station.

  • Page 82: 802.11B Authentication

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway The station sends an association request to the access point. The access point associates with the station. The station can now communicate with the Ethernet network through the access point.

  • Page 83: Shared Key Authentication

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Shared Key Authentication The following steps occur when two devices use Shared Key Authentication: The station sends an authentication request to the access point. The access point sends challenge text to the station.

  • Page 84: Overview Of Wep Parameters

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Overview of WEP Parameters Before enabling WEP on an 802.11b network, you must first consider what type of encryption you require and the key size you want to use. Typically, there are three WEP Encryption options available for 802.11b products:...

  • Page 85: Wep Configuration Options

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway When configured for 40-bit encryption, 802.11b products typically support up to four WEP Keys. Each 40-bit WEP Key is expressed as 5 sets of two hexadecimal digits (0-9 and A-F). For example, “12 34 56 78 90”...

  • Page 86: Wireless Channels

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Wireless Channels IEEE 802.11 wireless nodes communicate with each other using radio frequency signals in the ISM (Industrial, Scientific, and Medical) band between 2.4 GHz and 2.5 GHz. Neighboring channels are 5 MHz apart. However, due to spread spectrum effect of the signals, a node sending signals using a particular channel will utilize frequency spectrum 12.5 MHz above and below the...
  • Page 87 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway The radio frequency channels used are listed in Table 7-3: Table 7-3. 802.11 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 88: Ethernet Cabling

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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...

  • Page 89: Cable Quality

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway Cable Quality 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).
  • Page 90 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway B-22 Networks, Routing, and Firewall Basics...

  • Page 91: Appendix C Preparing Your Network

    Preparing Your Network This appendix describes how to prepare your network to connect to the Internet through the CG814WG Wireless Cable Modem Gateway and how to verify the readiness of broadband Internet service from an Internet service provider (ISP). Note: If an ISP technician configured your computer during the installation of a...

  • Page 92: Configuring Windows 95, 98, And Me For Tcp/Ip Networking

    Appendix B, “Networks, Routing, and Firewall Basics.” The CG814WG Gateway is shipped preconfigured as a DHCP server. The gateway assigns the following TCP/IP configuration information automatically when the PCs are rebooted: • PC or workstation IP addresses—192.168.0.2 through 192.168.0.254 •...
  • Page 93 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway You must have an Ethernet adapter, the TCP/IP protocol, and Client for Microsoft Networks. 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.

  • Page 94: Enabling Dhcp In Windows 95B, 98, And Me

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway If you need Client for Microsoft Networks: Click the Add button. Select Client, and then click Add. Select Microsoft. Select Client for Microsoft Networks, and then click OK. Restart your PC for the changes to take effect.
  • Page 95 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.

  • Page 96: Selecting Windows' Internet Access Method

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.

  • Page 97: Configuring Windows Nt4, 2000 Or Xp For Ip Networking

    From the drop-down box, select your Ethernet adapter. The window is updated to show your settings, which 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 98: Dhcp Configuration Of Tcp/Ip In Windows Xp, 2000, Or Nt4

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.
  • Page 99 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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 with the wireless icon and choose Status.
  • Page 100 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway The TCP/IP details are presented on the Support tab page. • Select Internet Protocol, and click Properties to view the configuration information. C-10 Preparing Your NetworkSoftware Version BNX v1.2...

  • Page 101: Dhcp Configuration Of Tcp/Ip In Windows 2000

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.
  • Page 102 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway • Click on the My Network Places icon on the Windows desktop. This will bring up a window called Network and Dial-up Connections. • Right click on Local Area Connection and select Properties.
  • Page 103 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway • With Internet Protocol (TCP/IP) selected, click on Properties to open the Internet Protocol (TCP/IP) Properties dialogue box. Verify that – Obtain an IP address automatically is selected. – Obtain DNS server address automatically is selected.

  • Page 104: Dhcp Configuration Of Tcp/Ip In Windows Nt4

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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. Again, remember Cox only sets up TCP/IP dynamically (i.e., it uses DHCP to obtain TCP/IP settings).
  • Page 105 Reference Manual for the Model CG814WG Wireless Cable Modem Gateway • Highlight the TCP/IP Protocol in the Network Protocols box, and click on the Properties button. Preparing Your Network C-15...

  • Page 106: Verifying Tcp/Ip Properties For Windows Xp, 2000, And Nt4

    Type ipconfig /all Your IP Configuration information will be 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: • The IP address is between 192.168.0.2 and 192.168.0.254 •...

  • Page 107: Configuring The Macintosh For Tcp/Ip Networking

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway • The default gateway is 192.168.0.1 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.

  • Page 108: Macos X

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway MacOS X From the Apple menu, choose System Preferences, then Network. If not already selected, select Built-in Ethernet in the Configure list. If not already selected, Select Using DHCP in the TCP/IP tab.

  • Page 109: Verifying The Readiness Of Your Internet Account

    Reference Manual for the Model CG814WG Wireless Cable Modem Gateway 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.

  • Page 110: 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 CG814WG Gateway. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

  • Page 111: Obtaining Isp Configuration Information For Macintosh Computers

    As mentioned above, you may need to collect configuration information from your Macintosh so that you can use this information when you configure the CG814WG Gateway. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

  • Page 112: Restarting The Network

    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 CG814WG Gateway, you are ready to access and configure the gateway.

  • Page 113: 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 114 Reference Manual for the Model CG814WG 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 115 Reference Manual for the Model CG814WG 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 116 Reference Manual for the Model CG814WG 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.

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