Instruction/ maintenance manual of the product CG814WG NETGEAR
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SM-CG814WGNA-Comcast-0 October 2003 NETGEAR , Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA Phone 1-888-NETGEAR Hardware Manual for the Model CG814WG Wireless Cable Modem Gateway.
ii © 2003 by NETGEAR, Inc. All rights reserved. T rademarks NETGEAR is a tr ademark of Netge ar , Inc. Microsoft, W indows, and W indows are register ed trademarks of Microsoft Corporation. Other brand and product names are registered tradem arks or trademarks of their respective holders.
iii test transmitte rs) in accordance with the regul ations may , ho wever , be subject to certain re strictions. Please refer to the notes in the operating instructions.
iv.
Contents v Content s About This Manual ..... ................................................................ ................. ............ ........... .. . ix Audience ............. ................ ................ ............. ................ ..
vi Contents DHCP Configuration of TCP/IP in Window s 2000 .... ................... .................... ...... 2-1 1 V erifying TCP/IP Properties for W indows XP and 2000 ......... ................... ............. 2-14 V erifying the Readiness of Y our Internet Ac count .
Contents vii Basic Router Concepts .................... ................ ................ ................ ................ .............. D-1 What is a Router? .............. ................ ................ ................. ................ ......
viii Contents.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway About This Manual ix About This Manual Thank your for purcha sing the NETGEAR ™ CG814WG W ireless Cable Modem Gateway. This manual describes the features of the gatewa y and provides installation and configuration instructions.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway x About This Manual S pecial Message Format s This guide uses the following format s to highlight special messages: Note: This format is used to highlight inform ation of importance or special interest.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Hardware Overview 1-1 Chapter 1 Hardware Overview This chapter describes the features of the NETGEAR CG814WG W ireless Cable Modem Gateway.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 1-2 Hardware Overview • Automatically detects and thwarts attacks such as Ping of Death, SYN Flood, LAND Attack and IP Spoofing. • Configurable Port Forwarding, Port Bloc king, Port T rigge ring and DMZ provide enough flexibility for most applications.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Hardware Overview 1-3 USB Port A USB connection for your computer eliminates the need for installin g an Ethernet card. Protocol Support The CG814WG supports t he T ransmission Control P rotocol/Internet Protocol (TCP /IP).
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 1-4 Hardware Overview • V isual monitoring The gateway’ s front panel LEDs provide an e asy way to monitor its status and activity .
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Hardware Overview 1-5 What’ s in the Box? The product package should contain the following it ems: • CG814WG W ireless Cable Mod.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 1-6 Hardware Overview Te s t O n Off A system failure has occurred. Re boot the gateway. Normal operation. Cable Link On (Green) Off Configuration of the cable interfa ce by your cable service provider is complete.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Hardware Overview 1-7 The Gateway’ s Rear Panel The rear panel of the CG81 4WG ( Figure 1-2 ) contains t he connections identified below . Figure 1-2: CG814WG Rear Panel V iewed from left to right, the rear panel contains the following elements: • 802.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 1-8 Hardware Overview.
Preparing Your Netwo rk 2-1 Chapter 2 Prep aring Y our Network This appendix describes how to prepare your ne twork to connect to the Internet through the CG814WG W ireless Cable Modem Gateway and ho w to verify the readiness of broadband Internet service from an Inte rnet service provider (ISP).
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-2 Prepa ring Your Ne twork • Subnet mask —255.255.25 5.0 • Gateway address (the gateway)—192.168.0.1 These addresses are part of the IETF-designated private addres s range for use in private networks.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-3 Y ou must have an Ethernet adapter , the TCP/IP protocol, and Client for M icrosoft Networks. If you need to install a ne w adapter , follow these steps: a.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-4 Prepa ring Your Ne twork If you need Client for Micro soft Networks: a. Click the Add button. b. Select Client, and then click Ad d. c. Select Microsoft. d. Select Client for Microsoft Networks, and then click OK.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-5 V erify the following settings as shown: • Client for Microsoft Network exists • Ethernet adapter is present • TCP/IP is present • Primary Network Logon is set to W indows logon Click on the Properties button.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-6 Prepa ring Your Ne twork Selecting Windows’ In ternet Access Method 1. On the W indows taskbar, click the S tart button, point to Settings, and th en click Control Panel. 2. Double-click the Internet Options icon.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-7 2. Ty p e winipcfg , and then click OK. The IP Configuration window opens, which lists (a mong other things), your IP address, subnet mask, and default gateway .
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-8 Prepa ring Your Ne twork DHCP Configuration of TCP /IP in Windows XP or 2000 Y ou will find there are many similarities in th e procedures for different W indows systems whe n using DHCP to configure TCP/IP .
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-9 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 .
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-10 Preparing Your Network The TCP/IP details are presented on the Support tab page.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-1 1 DHCP Configuration of TC P/IP in Windows 2000 Once again, after you have installed the network card, TCP/IP for W indows 2000 is con figured. TCP/IP should be added by de fault and set to DHCP without your having to configure it.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-12 Preparing Your Network • Click on the My Network Places icon on the W indows desktop. This will bring up a window called Network a nd Dial-up Conn ections. • Right click on Local Ar ea Connection and select Properties .
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-1 3 • W ith Internet Protocol (TCP/IP) selected, click on Properties to open the Internet Protocol (TCP/IP) Properties dialogue box. V erify that – Obtain an IP address automatically is selected.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-14 Preparing Your Network V erifying TCP/IP Properti es for Windows XP and 2000 T o check your PC’ s TCP/IP configuration: 1. On the W indows taskbar , click the Start button, and then click Run.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-1 5 V erifying the Readiness of Y our 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 mode m.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-16 Preparing Your Network • An IP address and subnet mask • A gateway IP address, which is the address of the ISP’ s router .
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Preparing Your Netwo rk 2-1 7 If an IP address appears under Installed Gatewa ys, write down the address. This is the ISP’ s gateway address. Select the address and then click Remove to remove the gateway address.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-18 Preparing Your Network.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Troubleshooting A-1 Appendix A T roubleshooting This chapter gives informatio n about troubleshooting your CG814WG W ireless Cable Modem Gateway. For the common problems listed, go to the section indicated.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway A-2 Troubleshooting – The Internet Link port LED is lit. If any of these conditions does not occur , refer to the appropriate following section.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Troubleshooting A-3 Cable Link LED Not On If the Cable Link LED does not lig ht when connected to your ca ble television cable, check the following: • Make sure that the coaxial cable connections ar e secure at the gateway and at the wall jack.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway A-4 Troubleshooting ping 192.168.0.1 3. Click on OK. Y ou should see a message like this one: Pinging <IP address> with 32 byt.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Troubleshooting A-5 — 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 vi sible in your PC’ s Network Control Panel.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway A-6 Troubleshooting.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Glossary B-1 Appendix B 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.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway B-2 Glossary IETF Internet Engin eering T ask Force. An open international community of network designers, oper ators, vendors, and research ers concerned with the evolution of the Internet architecture a nd the smooth operation of t he Internet.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Glossary B-3 p acket A block of information sent over a network. A packet typically contains a source and destination network address, so me protocol and length information, a block of data, and a checksum.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway B-4 Glossary.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Configuring Wireless Security in Windows XP C-1 Appendix C Configuring Wireless Security in W indows XP This section describes how to configure basic wireless security on your W ireless Local Area Network (WLAN) when using Windows XP .
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway C-2 Configuring Wireless Security in Windows XP T wo Basic Operating Modes The CG814WG Gateway, li ke all 802.1 1 adapters , can operate in the following two basic modes: • Infrastructure Mod e : An 802.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Configuring Wireless Security in Windows XP C-3 CG814WG Default Wireless Configuration Settings If this is a new wireless network installation, use the factory default settings to set up the network and verify wireless connectivity .
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway C-4 Configuring Wireless Security in Windows XP Basic Inst allation Instructions Use the procedure below th at corresponds to the version of W indows you are using. For Windows XP Users Inst alling a CG814WG Install the CG814WG driver and configuration utility softwar e.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Configuring Wireless Security in Windows XP C-5 Install the CG814WG Wir eless Cable Modem Gateway. a. Locate an availab le CardBus slot on the side of your notebook. Hold the PC Card with the Netgear logo facing up and insert it into the CardBus slot.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway C-6 Configuring Wireless Security in Windows XP Configur e your CG814WG. a. Right click on the network icon in the W indows XP system tray to open the network options menu. b. Click on the V iew A vailable W ireless Networks menu item.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Configuring Wireless Security in Windows XP C-7 V erify wir eless connectivity to your network. a. Open the CG814WG utility by clicking on the icon in the W indows system tray . b. V erify that your Connection and Status Monitor information ma tches your wireless network.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway C-8 Configuring Wireless Security in Windows XP Wireless Connection Indicators The NETGEAR wireless adapters provide the indicators which give you feedb ack on the status of your wireless connection: • LEDs on the wireless adapter indicat e the condition of wireless link.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Configuring Wireless Security in Windows XP C-9 Interpreting System T ray Icon Colors The System T ray (SysT ray) resides on one end o f the taskbar in the Micro soft W indows desktop.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway C-10 Configuring Wireless Security in Windows XP Basic T roubleshooting Tip s If you have problems connected to your wireless network, try the tips below .
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Networks, Routing, and Firewall Basics D-1 Appendix D Networks, Routing, and Firewall Basics This chapter provides an overview of IP networks, routing, and firewalls.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway D-2 Networks, Routing, and Firewall Basics What is a Router? A router is a device that forwards traffic between networks based on network layer information in the data and on routing tables main tained by the router .
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Networks, Routing, and Firewall Basics D-3 The latter version is easier to remember and easier to enter into your computer . In addition, the 32 bits of the ad dress are subdivided into two part s.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway D-4 Networks, Routing, and Firewall Basics • Class C Class C addresses can have 254 hosts on a netw ork. Class C addre sses use 24 bits for the network address and eight bits for the node.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Networks, Routing, and Firewall Basics D-5 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 ap pended to the IP address, following a backward slash (/), as “/n.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway D-6 Networks, Routing, and Firewall Basics Although the preceding example uses the entire third octet for a subnet address, note that you are not restricted to octet boundaries in subnetting.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Networks, Routing, and Firewall Basics D-7 NETGEAR strongly recommends that you configur e all hosts on a LAN se gment to use the sa.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway D-8 Networks, Routing, and Firewall Basics Figure D-3: Single IP Address Op eration Using NA T This scheme offers t he additional benefit of firewall -like protection because the internal LAN addresses are not available to the Internet thro ugh the translated connection.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Networks, Routing, and Firewall Basics D-9 If a device sends data to another station on the network and the destination MAC address is not yet recorded, ARP is used. An ARP request is broadcast onto the network.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway D-10 Networks, Routing, and Firewall Basics IP Configuration by DHCP When an IP-based local area networ k is installed, each PC must be configured with an IP a ddress.
Hardware Manual for the Mo del CG814WG Wireless Cable Modem Gateway Networks, Routing, and Firewall Basics D-1 1 S t ateful Pac ket Inspection Unlike simple Internet sharing rout ers, a firewall uses a process ca ll ed stateful packet inspection to ensure secure firewall filtering to protect your network from attacks and intrusions.
Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway D-12 Networks, Routing, and Firewall Basics transmit pair must be exchanged with the receive pair .
An important point after buying a device NETGEAR CG814WG (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought NETGEAR CG814WG yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data NETGEAR CG814WG - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, NETGEAR CG814WG you will learn all the available features of the product, as well as information on its operation. The information that you get NETGEAR CG814WG will certainly help you make a decision on the purchase.
If you already are a holder of NETGEAR CG814WG, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime NETGEAR CG814WG.
However, one of the most important roles played by the user manual is to help in solving problems with NETGEAR CG814WG. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device NETGEAR CG814WG along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
