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Hardware Manual for the
Model CG814WG
Wireless Cable Modem
Gateway
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Phone 1-888-NETGEAR
SM-CG814WGNA-Comcast-0
October 2003
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© 2003 by NETGEAR, Inc. All rights reserved. Trademarks NETGEAR is a trademark of Netgear, Inc. Microsoft, Windows, and Windows are registered trademarks of Microsoft Corporation. Other brand and product names are registered trademarks or trademarks of their respective holders. Statement of Conditions In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice. NETGE
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test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please refer to the notes in the operating instructions. Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations. Voluntary Control Council for Interference (VCCI) Statement This equipment is in the second category (information equipment to be used
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iv
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Contents About This Manual................................................................................................................ix Audience ........................................................................................................................... ix Typographical Conventions .............................................................................................. ix Special Message Formats ..........................................................................
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DHCP Configuration of TCP/IP in Windows 2000 .................................................2-11 Verifying TCP/IP Properties for Windows XP and 2000 .........................................2-14 Verifying the Readiness of Your Internet Account ........................................................2-15 Are Login Protocols Used? ....................................................................................2-15 What Is Your Configuration Information? .....................................
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Basic Router Concepts .................................................................................................. D-1 What is a Router? ................................................................................................... D-2 Routing Information Protocol ................................................................................... D-2 IP Addresses and the Internet ................................................................................. D-2 Netmask ............
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viii Contents
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway About This Manual ™ Thank your for purchasing the NETGEAR CG814WG 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. However, basic computer network, Internet, firewall, and PC networking technologies tutorial information is provid
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway Special Message Formats This guide uses the following formats to highlight special messages: Note: This format is used to highlight information of importance or special interest. Warning: This format is used to highlight information about the possibility of injury or equipment damage. Danger: This format is used to alert you that there is the potential for incurring an electrical shock if you mishandle the equipment. x About T
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway Chapter 1 Hardware Overview This chapter describes the features of the NETGEAR CG814WG Wireless Cable Modem Gateway. About the CG814WG The NETGEAR CG814WG Wireless Cable Modem Gateway connects directly to the wide area network (WAN) using its built-in cable modem. It has multiple options to connect to your local area network (LAN), including a 4-port 10/100 Mbps Ethernet switch, a USB port and an 802.11g wireless Access Poin
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway • Automatically detects and thwarts attacks such as Ping of Death, SYN Flood, LAND Attack and IP Spoofing. • Configurable Port Forwarding, Port Blocking, Port Triggering and DMZ provide enough flexibility for most applications. • Blocks access from your LAN to Internet locations or services that you specify as off-limits. • Logs security incidents The CG814WG will log security events such as blocked incoming traffic, port scan
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway USB Port A USB connection for your computer eliminates the need for installing an Ethernet card. Protocol Support The CG814WG supports the Transmission Control Protocol/Internet Protocol (TCP/IP). Appendix D, "Networks, Routing, and Firewall Basics" provides further information on TCP/IP. • IP Address Sharing by NAT The CG814WG allows several networked PCs to share an Internet account using only a single IP address, which may
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway • Visual monitoring The gateway’s front panel LEDs provide an easy way to monitor its status and activity. 1-4 Hardware Overview
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway What’s in the Box? The product package should contain the following items: • CG814WG Wireless Cable Modem Gateway •AC power adapter • Category 5 (CAT5) Ethernet cable • USB cable • Resource CD, including: — This manual — 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
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway Table 1-1. LED Descriptions Test On A system failure has occurred. Reboot the gateway. Off Normal operation. Cable Link On (Green) Configuration of the cable interface by your cable service provider is complete. Off Configuration of the cable interface is still in progress. Cable On Data is being received from the network to the gateway on the Downstream cable interface. Traffic Off The cable interface is idle. Cable On Data
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway The Gateway’s Rear Panel The rear panel of the CG814WG (Figure 1-2) contains the connections identified below. Figure 1-2: CG814WG Rear Panel Viewed from left to right, the rear panel contains the following elements: • 802.11g Wireless anteenna • AC power adapter input • 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 comp
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway 1-8 Hardware Overview
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Chapter 2 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 broadband modem, or if you configured it using instructions provided by your ISP, you may need to copy the current configuration information for use in
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Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway • Subnet mask—255.255.255.0 • Gateway address (the gateway)—192.168.0.1 These addresses are part of the IETF-designated private address range for use in private networks. Configuring Windows 98 SE and Me for TCP/IP Networking As part of the PC preparation process, you need to manually install and configure TCP/IP on each networked PC. Before starting, locate your Windows CD; you may need to insert it during the TCP/IP installat
