NETGEAR CG814W Reference Manual
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NETGEAR CG814W Reference Manual

NETGEAR CG814W Reference Manual

Wireless cable modem gateway
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Reference Manual for the
Model CG814W Wireless
Cable Modem Gateway
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Phone 1-888-NETGEAR
SM-CG814WNA-0
January 2003

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Summary of Contents for NETGEAR CG814W

  • Page 1 Reference Manual for the Model CG814W Wireless Cable Modem Gateway NETGEAR, Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA Phone 1-888-NETGEAR SM-CG814WNA-0 January 2003...
  • 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 Serie auf die Erfüllung der Vorschriften hin zu überprüfen. Certificate of the Manufacturer/Importer It is hereby certified that the CG814W 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

    Contents About This Manual Chapter 1 Introduction ..........................1-1 About the CG814W Gateway ..................1-1 Key Features ........................1-1 Built-in Cable Modem ....................1-1 A Powerful, True Firewall ..................1-2 Content Filtering .......................1-2 802.11b Standards-based Wireless Networking ............1-2 Configurable Auto Uplink™ Ethernet Connection ............1-3 USB Port ........................1-3 Protocol Support ......................1-3...
  • Page 6 Restricting Wireless Access by MAC Address ............3-4 Configuring Wired Equivalent Privacy (WEP) ............3-6 Chapter 4 Protecting Your Network .....................4-1 Protecting Access to Your CG814W Gateway ..............4-1 Blocking Keywords, Sites, and Services ................4-2 Using Port Blocking ......................4-4 Port Forwarding ......................4-6 Using Port Triggering ......................4-8 Setting Up A Default DMZ Host ..................4-10...
  • Page 7 Troubleshooting the Web Configuration Interface ............6-3 Troubleshooting the ISP Connection ................6-4 Troubleshooting a TCP/IP Network Using a Ping Utility ..........6-4 Testing the LAN Path to Your Gateway ..............6-4 Testing the Path from Your PC to a Remote Device ..........6-5 Appendix A Technical Specifications ....................
  • Page 8 Key Size ........................ B-16 WEP Configuration Options .................. B-17 Wireless Channels ....................... B-18 Ethernet Cabling ......................B-20 Uplink Switches and Crossover Cables ..............B-20 Cable Quality ......................B-21 Appendix C Preparing Your Network ..................... C-1 Preparing Your Computers for TCP/IP Networking ............C-1 Configuring Windows 95, 98, and Me for TCP/IP Networking ........

  • Page 9: About This Manual

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway About This Manual Thank your for purchasing the NETGEAR ™ CG814W Wireless Cable Modem Gateway. This manual describes the features of the gateway and provides installation and configuration instructions. Audience This reference manual assumes that the reader has basic to intermediate computer and Internet skills.
  • Page 10 Technical Support For help with any technical issues, contact Customer Support at 1-888-NETGEAR, or visit us on the Web at www.NETGEAR.com. The NETGEAR Web site includes an extensive knowledge base, answers to frequently asked questions, and a means for submitting technical questions online.

  • Page 11: Chapter 1 Introduction

    (LAN), including a 4-port 10/100 Mbps Ethernet switch, a USB port and an 802.11b wireless Access Point. The CG814W 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 CG814W Gateway uses Stateful Packet Inspection for Denial of Service (DoS) attack protection and intrusion detection.

  • Page 12: A Powerful, True Firewall

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway A Powerful, True Firewall Unlike simple Internet sharing NAT routers, the CG814W Gateway is a true firewall, using stateful packet inspection to defend against hacker attacks. Its firewall features include: •...

  • Page 13: Configurable Auto Uplink™ Ethernet Connection

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Configurable Auto Uplink™ Ethernet Connection With its internal 4-port 10/100 switch, the CG814W Gateway 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 14: Easy Installation And Management

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Easy Installation and Management You can install, configure, and operate the CG814W Gateway within minutes after connecting it to the network. The following features simplify installation and management tasks: •...

  • Page 15: 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 16: The Gateway's Rear Panel

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Table 1-1. LED Descriptions Test A system failure has occurred. Reboot the gateway. Normal operation. Cable Link On (Green) Configuration of the cable interface by your cable service provider is complete.
  • Page 17 Reference Manual for the Model CG814W Wireless Cable Modem Gateway • AC power adapter input • 802.11b Wireless antenna • Factory Default Reset push button • USB port for connecting the gateway to a local computer • Four Ethernet RJ-45 ports for connecting the gateway to local computers •...
  • Page 18 Reference Manual for the Model CG814W Wireless Cable Modem Gateway Introduction...

  • Page 19: Connecting The Gateway To The Internet

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Chapter 2 Connecting the Gateway to the Internet This chapter describes how to set up the CG814W 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 20: Internet Configuration Requirements

    If you already have cable Internet service and are replacing a cable modem, you may need these parameters. • CG814W Gateway Cable and Device MAC Address, that can be found on the bottom of your gateway, or on the Basic Settings page. •...

  • Page 21: Record Your Internet Connection Information

    Secondary DNS Server IP Address: ______ . ______ . ______ . ______ MAC Addresses of CG814W Gateway and PC: If you have existing cable internet service and are replacing your cable modem you may need to notify your cable service provider of the MAC Address (often called Hardware Address) and/or Device Address of your CG814W Gateway.

  • Page 22: Connecting The Cg814W Gateway

    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 CG814W Gateway. 1. Connect the Gateway. Turn off your computer.
  • Page 23 Reference Manual for the Model CG814W Wireless Cable Modem Gateway Connect the gateway to you computer using the Ethernet cable included in the box from your CG814W Gateway’s LAN port (B) to the Ethernet adapter in your computer. C bl...
  • Page 24 Browse to the CD and install the USB driver by clicking through the Windows wizard prompts. Plug in your CG814W Gateway 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 CG814W Wireless Cable Modem Gateway A login window opens as shown in Figure 2-4 below: Figure 2-4: Login window For security reasons, the gateway has its own user name and password. When prompted, enter admin for the user name and password for the password, both in lower case letters.
  • Page 26 Reference Manual for the Model CG814W 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 27 MAC cloning lets you substitute a different MAC address for the CG814W Gateway’s built-in router address. The first time you log in to the CG814W Gateway, it automatically fills in the Cloned MAC Address with the MAC address from the PC which is logged in to the CG814W Gateway.
  • Page 28 Reference Manual for the Model CG814W Wireless Cable Modem Gateway 2-10 Connecting the Gateway to the Internet...

  • Page 29: Wireless Configuration

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Chapter 3 Wireless Configuration This chapter describes how to configure the wireless features of your CG814W 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 CG814W 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 CG814W 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: Restricting Wireless Access By Mac Address

    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 CG814W Wireless Cable Modem Gateway Figure 3-2: 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 CG814W 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 CG814W Wireless Cable Modem Gateway Chapter 4 Protecting Your Network This chapter describes how to use the firewall features of the CG814W Wireless Cable Modem Gateway to protect your network. Protecting Access to Your CG814W 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 CG814W Gateway prevents objectionable content from reaching your PCs. The CG814W allows you to control access to It also has the capability to Internet content by screening for keywords within Web addresses.
  • Page 37 The section below explains how to configure your Procedure 4-2: Blocking Keywords and Domains The CG814W Gateway allows you to restrict access to Internet content based on functions such as web address keywords and web domains. A domain name is the name of a particular web site. For example, for the address www.NETGEAR.com, the domain name is NETGEAR.com.

  • Page 38: Using Port Blocking

    Reference Manual for the Model CG814W 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 IP addresses, and time of day. To configure outbound rules on the CG814W Gateway, click the Port Blocking link on the Advanced section of the main menu.

  • Page 40: Port Forwarding

    To delete an existing rule, select its button on the left side of the table and click Delete. Port Forwarding Because the CG814W Gateway 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 41 Reference Manual for the Model CG814W Wireless Cable Modem Gateway Figure 4-5: 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 42: Using Port Triggering

    Reference Manual for the Model CG814W 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 43 Reference Manual for the Model CG814W Wireless Cable Modem Gateway the gateway to temporarily forward port 113 to the PC that initiated the login.l Figure 4-6: 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 44: Setting Up A Default Dmz Host

    Reference Manual for the Model CG814W 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 45: Managing Your Network

    This chapter describes how to perform network management tasks with your CG814W Wireless Cable Modem Gateway. Network Status Information The CG814W provides a variety of status and usage information which is discussed below. Viewing Gateway Status From the Main Menu, under Maintenance, select Gateway Status to view the screen in Figure 5-1.
  • Page 46 Reference Manual for the Model CG814W Wireless Cable Modem Gateway This screen shows the following parameters: Table 5-1. 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 47: Connection Status

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Connection Status From the Main Menu, under Maintenance, select Connection to view the screen in Figure 5-2. Figure 5-2: 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 48: Configuring Lan Ip Settings

    Reference Manual for the Model CG814W 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 49: Using The Gateway As A Dhcp Server

    Reference Manual for the Model CG814W 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 50: Dhcp Client Lease Info

    Reference Manual for the Model CG814W 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 51: Viewing And Emailing Logged Information

    Reference Manual for the Model CG814W 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 52: Erasing Configuration

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Erasing Configuration The configuration settings of the CG814W 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 53 Reference Manual for the Model CG814W Wireless Cable Modem Gateway From the Main Menu of the browser interface, under the Maintenance heading, select the Diagnostics menu, shown in Figure 5-5. Figure 5-5: 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 54 Reference Manual for the Model CG814W Wireless Cable Modem Gateway 5-10 Managing Your Network...

  • Page 55: Chapter 6 Troubleshooting

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Chapter 6 Troubleshooting This chapter gives information about troubleshooting your CG814W Wireless Cable Modem Gateway. For the common problems listed, go to the section indicated. • Is the gateway on? •...

  • Page 56: 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 57: Cable Link Led Not On

    Reference Manual for the Model CG814W 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 58: Troubleshooting The Isp Connection

    Reference Manual for the Model CG814W 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 59: Testing The Path From Your Pc To A Remote Device

    Reference Manual for the Model CG814W 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 60 Reference Manual for the Model CG814W 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 61: Technical Specifications

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Appendix A Technical Specifications This appendix provides technical specifications for the CG814W Wireless Cable Modem Gateway. Network Protocol and Standards Compatibility Data and Routing Protocols: TCP/IP DHCP server and client...
  • Page 62 Reference Manual for the Model CG814W Wireless Cable Modem Gateway Local: 10BASE-T or 100BASE-Tx, RJ-45 USB 1.1 Function 802.11b Wireless Access Point Internet: DOCSIS 1.0, upgradable to DOCSIS 1.1 Technical Specifications...

  • Page 63: Networks, Routing, And Firewall Basics

    Reference Manual for the Model CG814W 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 64: What Is A Router

    Routers vary in performance and scale, number of routing protocols supported, and types of physical WAN connection they support. The CG814W Wireless Cable Modem Gateway is a small office router that routes the IP protocol over a single-user broadband connection.
  • Page 65 Reference Manual for the Model CG814W 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 66: Netmask

    Reference Manual for the Model CG814W 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 67: Subnet Addressing

    Reference Manual for the Model CG814W 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 68 Reference Manual for the Model CG814W 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 69: 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 70: Single Ip Address Operation Using Nat

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Single IP Address Operation Using NAT In the past, if multiple PCs 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.

  • Page 71: Mac Addresses And Address Resolution Protocol

    Reference Manual for the Model CG814W 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 72: 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 CG814W Gateway has the capacity to act as a DHCP server.

  • Page 73: What Is A Firewall

    Reference Manual for the Model CG814W 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 74: Wireless Networking Overview

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Wireless Networking Overview The CG814W 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 75: 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 CG814W Gateway: Turn on the wireless station.

  • Page 76: 802.11B Authentication

    Reference Manual for the Model CG814W 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 77: Shared Key Authentication

    Reference Manual for the Model CG814W 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 78: Overview Of Wep Parameters

    Reference Manual for the Model CG814W 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 79: Wep Configuration Options

    Reference Manual for the Model CG814W 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 80: Wireless Channels

    Reference Manual for the Model CG814W 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 81 Reference Manual for the Model CG814W Wireless Cable Modem Gateway The radio frequency channels used are listed in Table 6-1: Table 6-1. 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 82: Ethernet Cabling

    Reference Manual for the Model CG814W 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 83: Cable Quality

    Reference Manual for the Model CG814W 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 84 Reference Manual for the Model CG814W Wireless Cable Modem Gateway B-22 Networks, Routing, and Firewall Basics...

  • Page 85: Preparing Your Network

    Preparing Your Network This appendix describes how to prepare your network to connect to the Internet through the CG814W 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 86: Configuring Windows 95, 98, And Me For Tcp/Ip Networking

    Appendix B, “Networks, Routing, and Firewall Basics.” The CG814W 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 87 Reference Manual for the Model CG814W 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 88: Enabling Dhcp In Windows 95B, 98, And Me

    Reference Manual for the Model CG814W 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 89 Reference Manual for the Model CG814W 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 90: Selecting Windows' Internet Access Method

    Reference Manual for the Model CG814W 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 91: 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 92: Dhcp Configuration Of Tcp/Ip In Windows Xp, 2000, Or Nt4

    Reference Manual for the Model CG814W 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 93 Reference Manual for the Model CG814W 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 94 Reference Manual for the Model CG814W 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 Network...

  • Page 95: Dhcp Configuration Of Tcp/Ip In Windows 2000

    Reference Manual for the Model CG814W 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 96 Reference Manual for the Model CG814W 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 97 Reference Manual for the Model CG814W 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 98: Dhcp Configuration Of Tcp/Ip In Windows Nt4

    Reference Manual for the Model CG814W 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 99 Reference Manual for the Model CG814W 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 100: 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 101: Configuring The Macintosh For Tcp/Ip Networking

    Reference Manual for the Model CG814W 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 102: Macos X

    Reference Manual for the Model CG814W 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 103: Verifying The Readiness Of Your Internet Account

    Reference Manual for the Model CG814W 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 104: 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 CG814W Gateway. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

  • Page 105: 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 CG814W Gateway. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

  • Page 106: 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 CG814W Gateway, you are ready to access and configure the gateway.

  • Page 107: Glossary

    Reference Manual for the Model CG814W Wireless Cable Modem Gateway Glossary 10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet over twisted pair wiring. 100BASE-Tx IEEE 802.3 specification for 100 Mbps Ethernet over twisted pair wiring. 802.11b IEEE specification for wireless networking at 11 Mbps using direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio spectrum at 2.5GHz.
  • Page 108 Reference Manual for the Model CG814W Wireless Cable Modem Gateway Gateway A local device, usually a router, that connects hosts on a local network to other networks. IETF Internet Engineering Task Force. An open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and the smooth operation of the Internet.
  • Page 109 Reference Manual for the Model CG814W Wireless Cable Modem Gateway See Network Address Translation. netmask A number that explains which part of an IP address comprises the network address and which part is the host address on that network. It can be expressed in dotted-decimal notation or as a number appended to the IP address.
  • Page 110 Reference Manual for the Model CG814W Wireless Cable Modem Gateway Virtual Private Network. A method for securely transporting data between two private networks by using a public network such as the Internet as a connection. See wide area network. Wired Equivalent Privacy. WEP is a data encryption protocol for 802.11b wireless networks.
  • Page 111 ASUS WLAN mini-PCI card WL-120 User Manual...
  • Page 112 Copyright Information No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except docu- mentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC.
  • Page 113 Copyright Information ASUSTeK COMPUTER INC. (Asia-Pacific) Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112 General Tel: +886-2-2894-3447 General Fax: +886-2-2894-3449 General Email: info@asus.com.tw Technical Support MB/Others (Tel): +886-2-2890-7121 (English) Notebook (Tel): +886-2-2890-7122 (English) Desktop/Server: +886-2-2890-7123 (English) Support Fax: +886-2-2890-7698 Support Email: tsd@asus.com.tw Web Site: www.asus.com.tw ASUS COMPUTER INTERNATIONAL (America)
  • Page 114 Quick Start Guide Welcome The ASUS WLAN mini-PCI card is designed to be fully compliant with the IEEE 802.11b wireless local area network (Wireless LAN) standard. The ASUS WLAN mini-PCI card comes with two antenna connectors, which are individually connected to the built-in antennas in your notebook. The two antennas allow your notebook to have the best communication when you are enjoying the wireless link.
  • Page 115 Quick Start Guide Installing the WLAN mini-PCI card Utilities After you have installed the WLAN mini-PCI card driver, you can install WLAN mini-PCI card utilities. Refer to the User's manual for detailed information. 1. Insert the ASUS WLAN mini-PCI card support CD and an autorun menu will appear.
  • Page 116 Reference Software Reference 1. Overview The ASUS WLAN mini-PCI card software includes five groups of utili- ties. • Control Center – Makes it easy to launch applications and activate network location settings. • Wireless Settings – Allows users to control the ASUS WLAN mini-PCI card.
  • Page 117 Reference 2. Windows XP Wireless Options The wireless options shown below is only available for Windows XP. The first time you run the Control Center utility, it will automatically show. Select one of the radio buttons to decide your Windows XP wireless net- working environment.
  • Page 118 Reference 3. Control Center Control Center is an application that makes it easy to launch applications and activate network location settings. Control Center starts automatically when the system boots. Whenever Control Center is running, you will see a Control Center icon displayed on the Windows taskbar. Starting the Control Center manually •...
  • Page 119 Reference Wireless Status Icons (on the taskbar) Excellent link quality and connected to Internet (Infrastructure) Good link quality and connected to Internet (Infrastructure) Fair link quality and connected to Internet (Infrastructure) Poor link quality and connected to Internet (Infrastructure) Not linked but connected to Internet (Infrastructure) Excellent link quality but not connected to Internet (Infrastructure) Good link quality but not connected to Internet (Infrastructure) Fair link quality but not connected to Internet (Infrastructure)
  • Page 120 Reference 3. Left-clicking the taskbar icon shows the following menu: • Wireless Radio On – Turns the wireless radio ON. • Wireless Radio Off – Turns the wireless radio OFF. • Search and Join – View the properties of available Access Points within range.
  • Page 121 Reference More than one ASUS WLAN Card If you have more than one ASUS WLAN Card. You will be given a device selection window when you launch the “Wireless Settings” utility. 4.1 Status - Status Tab You can view the information about the ASUS WLAN mini-PCI card from the general menu.
  • Page 122 Reference Association State Shows the ASUS WLAN mini-PCI card association status as follows: Connected – The station is now associated with one wireless LAN device. Also, indicates the MAC address of this device. Scanning... – The station is now attempting to authenticate and associ- ate with the desired Access Point.
  • Page 123 Reference Button Enable Radio/Disable Radio – You can click the Disable Radio button to turn OFF the wireless radio. When you click this button, the Radio State field indicates that the radio has been turned OFF and the remaining fields in this window display either a “0”...
  • Page 124 Reference 4.2 Status - Connection Tab You can view the current link statistics about the ASUS WLAN mini-PCI card. These statistics are updated once per second and are valid only if the ASUS WLAN mini-PCI card exists. Throughput Transmitted – The number of bytes in frames that were transmitted. Received –...
  • Page 125 Reference 4.3 Status - IP Config Tab IP Config tab shows all the current network configuration information for the ASUS WLAN mini-PCI card. Use it to verify your network settings. IP CONFIG will display all the current TCP/IP configuration values in- cluding the IP address, subnet mask, default gateway and Windows Inter- net Naming Service (WINS) and DNS configuration.
  • Page 126 Reference 4.4 Config - Basic Tab Lets you can change the ASUS WLAN mini-PCI card configurations with- out rebooting your computer. Network Type Infrastructure – Select the Infrastructure mode to establish a connec- tion with an Access Point. Your computer is able to access wireless LAN and wired LAN (Ethernet), via an associated access point.
  • Page 127 Reference SSID Use the SSID filed to configure the SSID for the ASUS WLAN mini-PCI card. You can enter a new SSID or select one from the drop-down list box. SSID stands for “Service Set Identifier”, which is a string used to identify a wireless LAN.
  • Page 128 Reference Other WEP - Click on this to show the "Encryption" page. Advanced - Click on this to show the "Advanced" tab. In most cases, the default values do not have to be changed. Troubleshooting . - Click on this to show the "Troubleshooting" utility. ASUS WLAN mini-PCI card...
  • Page 129 Reference 4.5 Config - Encryption Tab Lets you configure the ASUS WLAN mini-PCI card encryption settings. For data confidentiality in a wireless environment, IEEE 802.11 specifies a Wired Equivalent Privacy (WEP) algorithm to offer transmission privacy similar to wired network. The WEP uses keys to encrypt transmitted data packets and decrypt received data packets.
  • Page 130 Reference Key Format You can enter the WEP Key as Hexadecimal digits (0~9, a~f, and A~F), or as ASCII characters, based on the state of the Key Format. Key Length For 64 bits encryption, each Key contains exactly 10 hex digits, or 5 ASCII characters.
  • Page 131 Reference 64/128bits versus 40/104bits You may be confused about configuring WEP encryption, especially when using multiple wireless LAN products from different vendors. There are two levels of WEP Encryption: 64 bits and 128 bits. First, 64 bit WEP and 40 bit WEP are the same encryption method and can interoperate in the wireless network.
  • Page 132 Reference 4.6 Config - Advanced Tab Advanced tab provides some additional settings for the ASUS WLAN mini-PCI card. The “Advanced” tab is hidden until you click Advanced on the Config - Basic page. NOTE: This page is for advanced users. Do not change these set- tings if you do not fully understand these items.
  • Page 133 Reference Authentication Algorithm Because there is no precise bound in wireless LANs, it needs to be imple- mented in another mechanism to provide a higher level of security. That is where Authentication services come in. If a mutual authentication relation- ship has not been established between the ASUS WLAN mini-PCI card(s) and the Access Point(s), an association cannot be established.
  • Page 134 Reference 4.7 Survey - Site Survey Tab Use the Site Survey tab to view statistics on the wireless networks avail- able to the ASUS WLAN mini-PCI card. The Site Survey tab is read-only with no user configurable data fields. Use the Site Survey tab to view the following network parameters.
  • Page 135 Reference 4.8 About - Version Info Tab Click about to view version information. The version under the copyright is the utility version. The version information field includes driver, hard- ware, and firmware versions. ASUS WLAN mini-PCI card...
  • Page 136 Reference 4.9 Link Status ASUS WLAN mini-PCI card connection quality icon appears on the left of the ASUS WLAN Card Settings. Use the icon to view the current signal quality of the adapter. Excellent Link Quality (Infrastructure) Good Link Quality (Infrastructure) Fair Link Quality (Infrastructure) Poor Link Quality (Infrastructure) Not linked (Infrastructure)
  • Page 137 Reference 5. Mobile Manager Mobile Manager is a convenient tool to setup and manage network loca- tion settings. Mobile Manager lets users configure multiple alternative con- figurations for different locations. You only need to set this once, and then easily switch configurations when you change your location. Starting Mobile Manager •...
  • Page 138 Reference 5.1 Main Window You can use the Mobile Manager utility main window to create a new configura- tion, edit a configuration or activate a configuration. The main window includes a menu bar, tool bar, and a list view for showing existing configurations. Using the pull-down menu and toolbar The following topics show the commands available from the Mobile Manager pull-down menu and toolbar.
  • Page 139 Reference Mobilize Menu Auto Roaming – If an association changes, it will automatically switch into a network configuration that you have made. If no asso- ciations have been made, it will automatically connect to a wireless network based on configurations that you specify. Activate Configuration –...
  • Page 140 Reference View Menu Large Icons - Displays large icons for each configuration. Small Icons - Displays small icons for each configuration. List - Shows the configuration names in a list. Details - The Detailed view expands this list to include information about the configurations.
  • Page 141 Reference 5.2 Using New Configuration Wizard Create a new configuration Create a new configuration if you are in a specific location that does not have an existing configuration defined. Use the New Configuration Wiz- ard to create a configuration in a few easy steps. 1.
  • Page 142 Reference 3. Enter the name and description you want to use for this configuration in the Name and description field. And Click Next. 4. Follow the on-screen instructions, it will guide you through the process of specifying the settings in your configuration. The Wizard reads the current system settings (TCP/IP, NT Domain, Proxy, File, and Printer Sharing) and displays it.
  • Page 143 Reference General settings Name – This field is mandatory, and used for indicating the location from which you are dialing or connecting to the network. For example, if this is used for a meeting room at work, you can use a name like “Work-Meeting Room”.
  • Page 144 Reference Wireless settings Network Type Infrastructure – Select the Infrastructure mode to establish a connec- tion with an Access Point. Ad Hoc – Select the Ad Hoc mode to communicate directly with each other without using an Access Point. SSID Using the SSID filed to configure the SSID setting for the ASUS WLAN mini-PCI card.
  • Page 145 Reference Select disable or enable (64-bit or 128-bit) WEP encryption. The WEP Key is a 64-bit (5 byte) or 128-bit (13 byte) Hexadecimal digit that is used to encrypt transmit data packets and decrypt received data packets. TCP/IP settings TCP/IP settings include five tabs: Device, IP Address, Gateway, DNS, and WINS.
  • Page 146 Reference Gateway Specify the gateways. There can be more than one specified.Set up the primary gateway first. Add a gateway - Type the IP address of the gateway in the New Gate- way field and then click Add. The gateway you specified appears in the Installed Gateways list.
  • Page 147 Reference Dialing settings Specify how the call will be dialed. This is useful if you want to change the call to a calling card, use your computer from different locations, or add a dial prefix, country code, or area code automatically. Dialup Networking settings Dialup Networking settings include four tabs: Device, Phone Number, Server Type, and TCP/IP.
  • Page 148 Reference Select Require encrypted password checkbox to specify that only en- crypted passwords can be sent to or accepted by your computer. This is useful if you need additional security for this connection. When type your password while dialing out, this setting will encrypt your password but the target computer must support encrypted passwords for your password to be understood.
  • Page 149 Reference Internet settings A proxy server acts as a security barrier between your internal network (Intranet) and the Internet, keeping other people on the Internet from gain- ing access to confidential information on your internal network or your computer. Disable Proxy Server – Do not use proxy server. Enable Proxy Server –...
  • Page 150 Reference 6. Site Monitor Site Monitor measures the signal-to-noise (SNR) values of all available wireless networks. This tool is used for determining the best placement of Access Points to provide the best coverage for a wireless network. 6.1 Starting Site Monitor •...
  • Page 151 Reference 6.3 Monitor Directed link state test with one wireless network, including: • SNR: This indicates the quality of communications within the current network. The communication quality is based on signal level and noise level measurements. In principle, the higher the SNR, the better your communications quality.
  • Page 152 Reference 7. Live Update Live Update is a utility that allows you to update your ASUS WLAN mini-PCI card’s firmware and drivers. The use of this utility assumes that you are properly connected to Internet through an Internet Service Provide (ISP). 1.
  • Page 153 Reference 3. Follow any on-screen instructions or prompts to complete setup. If you already have the latest revision of your ASUS WLAN mini-PCI card’s firmware files or driver files, Live Update reports that no update is necessary. When Live Update starts the firmware upgrade, a warning message will tell you that incorrect firmware upgrades may cause your ASUS WLAN mini-PCI card to malfunction.
  • Page 154 Reference 8. Windows XP Wireless Properties 1. Double-click System icon in the Control Panel. 2. Double-click ASUS 802.11b Network... 3. The “General” page will show status, 4. The “Wireless Networks” page will show duration, speed, and signal strength. Available networks and Preferred Signal strength is represented by green networks.
  • Page 155 Reference 8. Windows XP Wireless Properties (Cont.) 5. The “Authentication” page allows you to 6. The “Advanced” page allows you to set add security settings. Read Windows firewall and sharing. Read Windows help help for more information. for more information. ASUS WLAN mini-PCI card...
  • Page 156 Troubleshooting Troubleshooting The below troubleshooting guides provide answers to some of the more common problems, which you may encounter while installing or using ASUS WLAN mini-PCI card products. If you encounter difficulties that are not mentioned in this section, please contact ASUS Wireless LAN Tech- nical Support.
  • Page 157 Chapter 4 - Troubleshooting Cannot connect to a Station (ASUS WLAN mini-PCI card) Follow the procedure below to configure your ASUS WLAN mini-PCI card a. Verify that the “Network Type” is in “Ad Hoc” mode. b. Verify that the “SSID” of your ASUS 802.11b Network Adapter is set to “any”...
  • Page 158 Glossary Glossary Access Point (AP) An networking device that seamlessly connects wired and wireless net- works. Access Points combined with a distributed system support the cre- ation of multiple radio cells that enable roaming throughout a facility. Ad Hoc A wireless network composed solely of stations within mutual communi- cation range of each other (no Access Point).
  • Page 159 Glossary IEEE 802.11 IEEE 802.xx is a set of specifications for LANs from the Institute of Elec- trical and Electronic Engineers (IEEE). Most wired networks conform to 802.3, the specification for CSMA/CD based Ethernet networks or 802.5, the specification for token ring networks. 802.11 defines the standard for wireless LANs encompassing three incompatible (non-interoperable) tech- nologies: Frequency Hopping Spread Spectrum (FHSS), Direct Sequence Spread Spectrum (DSSS), and Infrared.
  • Page 160 Glossary ISP (Internet Service Provider) An organization that provides access to the Internet. Small ISPs provide service via modem and ISDN while the larger ones also offer private line hookups (T1, fractional T1, etc.). LAN (Local Area Network) A communications network that serves users within a defined geographi- cal area.
  • Page 161 Glossary SSID (Service Set ID) SSID is a group name shared by every member of a wireless network. Only client PCs with the same SSID are allowed to establish a connection. Station Any device containing IEEE 802.11 wireless medium access conformity. TCP (Transmission Control Protocol) The standard transport level protocol that provides the full duplex, stream service on which many application protocols depend.
  • Page 162 Safety Statements Federal Communications Commission Statement This device complies with FCC Rules Part 15. Operation is subject to the follow- ing two conditions: • This device may not cause harmful interference, and • This device must accept any interference received, including interference that may cause undesired operation.
  • Page 163 7. Wireless LAN Safety Statements MPE Safety Statement Your device contains a low power transmitter. When device is transmitted it sends out Radio Frequency (RF) signal. FCC Radio Frequency Exposure Statement This Wireless LAN radio device has been evaluated under FCC Bulletin OET 65C and found compliant to the requirements as set forth in CFR 47 Sections 2.1091, 2.1093, and 15.247(b)(4) addressing RF Exposure from radio frequency devices.

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