NETGEAR CG814WG Bedienungsanleitung

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Richtige Gebrauchsanleitung

Die Vorschriften verpflichten den Verkäufer zur Übertragung der Gebrauchsanleitung NETGEAR CG814WG an den Erwerber, zusammen mit der Ware. Eine fehlende Anleitung oder falsche Informationen, die dem Verbraucher übertragen werden, bilden eine Grundlage für eine Reklamation aufgrund Unstimmigkeit des Geräts mit dem Vertrag. Rechtsmäßig lässt man das Anfügen einer Gebrauchsanleitung in anderer Form als Papierform zu, was letztens sehr oft genutzt wird, indem man eine grafische oder elektronische Anleitung von NETGEAR CG814WG, sowie Anleitungsvideos für Nutzer beifügt. Die Bedingung ist, dass ihre Form leserlich und verständlich ist.

Was ist eine Gebrauchsanleitung?

Das Wort kommt vom lateinischen „instructio”, d.h. ordnen. Demnach kann man in der Anleitung NETGEAR CG814WG die Beschreibung der Etappen der Vorgehensweisen finden. Das Ziel der Anleitung ist die Belehrung, Vereinfachung des Starts, der Nutzung des Geräts oder auch der Ausführung bestimmter Tätigkeiten. Die Anleitung ist eine Sammlung von Informationen über ein Gegenstand/eine Dienstleistung, ein Hinweis.

Leider widmen nicht viele Nutzer ihre Zeit der Gebrauchsanleitung NETGEAR CG814WG. Eine gute Gebrauchsanleitung erlaubt nicht nur eine Reihe zusätzlicher Funktionen des gekauften Geräts kennenzulernen, sondern hilft dabei viele Fehler zu vermeiden.

Was sollte also eine ideale Gebrauchsanleitung beinhalten?

Die Gebrauchsanleitung NETGEAR CG814WG sollte vor allem folgendes enthalten:
- Informationen über technische Daten des Geräts NETGEAR CG814WG
- Den Namen des Produzenten und das Produktionsjahr des Geräts NETGEAR CG814WG
- Grundsätze der Bedienung, Regulierung und Wartung des Geräts NETGEAR CG814WG
- Sicherheitszeichen und Zertifikate, die die Übereinstimmung mit entsprechenden Normen bestätigen

Warum lesen wir keine Gebrauchsanleitungen?

Der Grund dafür ist die fehlende Zeit und die Sicherheit, was die bestimmten Funktionen der gekauften Geräte angeht. Leider ist das Anschließen und Starten von NETGEAR CG814WG zu wenig. Eine Anleitung beinhaltet eine Reihe von Hinweisen bezüglich bestimmter Funktionen, Sicherheitsgrundsätze, Wartungsarten (sogar das, welche Mittel man benutzen sollte), eventueller Fehler von NETGEAR CG814WG und Lösungsarten für Probleme, die während der Nutzung auftreten könnten. Immerhin kann man in der Gebrauchsanleitung die Kontaktnummer zum Service NETGEAR finden, wenn die vorgeschlagenen Lösungen nicht wirksam sind. Aktuell erfreuen sich Anleitungen in Form von interessanten Animationen oder Videoanleitungen an Popularität, die den Nutzer besser ansprechen als eine Broschüre. Diese Art von Anleitung gibt garantiert, dass der Nutzer sich das ganze Video anschaut, ohne die spezifizierten und komplizierten technischen Beschreibungen von NETGEAR CG814WG zu überspringen, wie es bei der Papierform passiert.

Warum sollte man Gebrauchsanleitungen lesen?

In der Gebrauchsanleitung finden wir vor allem die Antwort über den Bau sowie die Möglichkeiten des Geräts NETGEAR CG814WG, über die Nutzung bestimmter Accessoires und eine Reihe von Informationen, die erlauben, jegliche Funktionen und Bequemlichkeiten zu nutzen.

Nach dem gelungenen Kauf des Geräts, sollte man einige Zeit für das Kennenlernen jedes Teils der Anleitung von NETGEAR CG814WG widmen. Aktuell sind sie genau vorbereitet oder übersetzt, damit sie nicht nur verständlich für die Nutzer sind, aber auch ihre grundliegende Hilfs-Informations-Funktion erfüllen.

Inhaltsverzeichnis der Gebrauchsanleitungen

  • Seite 1

    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[...]

  • Seite 2

    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. St atement of Conditions In the interest of improving inter[...]

  • Seite 3

    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. Federal Of fice for T elecommuni cations Ap provals has been notified of the placing of this equipment on the market and has been granted the right to test the series for complian[...]

  • Seite 4

    iv[...]

  • Seite 5

    Contents v Content s About This Manual ..... ................................................................ ................. ............ ........... .. . ix Audience ............. ................ ................ ............. ................ ................ ................ ............ ..... ix T ypographical Conventions ................ .[...]

  • Seite 6

    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 .............. ................ ................ .......... 2-15 Are Login Pro[...]

  • Seite 7

    Contents vii Basic Router Concepts .................... ................ ................ ................ ................ .............. D-1 What is a Router? .............. ................ ................ ................. ................ ................ .... D-2 Routing Information Protocol .................. ... ......... .................[...]

  • Seite 8

    viii Contents[...]

  • Seite 9

    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. Audience This reference manual assumes that the read[...]

  • Seite 10

    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. Wa r n i n g : This format is used to highlight inform ation about the possibil[...]

  • Seite 11

    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. About the CG814WG The NETGEAR CG814WG W ire less Cable Modem Gateway connects di rectly to the wide area network (W AN) using its built-in cab[...]

  • Seite 12

    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. • Blocks access from yo[...]

  • Seite 13

    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). Appendix D, "Netwo rks, Routing, and F irewall Basics[...]

  • Seite 14

    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 .[...]

  • Seite 15

    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 Modem Gateway •A C p o w e r a d a p t e r • Category 5 (CA T5) Ethernet cable • USB cable • Resour ce CD , including: — This manual — Applic[...]

  • Seite 16

    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. Configuration of the cable interface is still i n progress. Cable D[...]

  • Seite 17

    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: • 802.1 1g W ireless anteenna ?[...]

  • Seite 18

    Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 1-8 Hardware Overview[...]

  • Seite 19

    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). Prep aring Y our Computers for TCP/IP Networking Com[...]

  • Seite 20

    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. Configuring Windows 98 SE and Me for TCP/IP Networking As part of the P[...]

  • Seite 21

    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. Click the Add button. b. Select Adapter , and then click Add. c. Select the manufacturer and mode[...]

  • Seite 22

    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. 3. Restart your PC for the changes to take ef fect. Enabling DHC[...]

  • Seite 23

    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. The following TCP/IP Properties wind[...]

  • Seite 24

    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. 3. Select “I want to set up my Int ernet connectio n manuall[...]

  • Seite 25

    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 . 3. From the drop-down box, select your Ethernet adapter . The window is updated to show your[...]

  • Seite 26

    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 . The following steps will walk you through the configura tion process [...]

  • Seite 27

    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 . • Right-click on the Connection with the wireless icon and choose St a t u s . Now you should[...]

  • Seite 28

    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. • Select Internet Protocol, and click Properties to view the co nfiguration information .[...]

  • Seite 29

    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. However , if there are[...]

  • Seite 30

    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 . The Local Area Connection Pr operties dialog box appe[...]

  • Seite 31

    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. – Obtain DNS server address automatically is selected.[...]

  • Seite 32

    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. The Run window opens. 2. Ty p e cmd and then click OK. A command window opens 3. T[...]

  • Seite 33

    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. This modem must be a sepa[...]

  • Seite 34

    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 • One or more domain name server (DNS) IP addresses • Host name and domain suf fix For example, your account’ s full server na mes may look like[...]

  • Seite 35

    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. 6. Select the DNS Configuration tab. If any DNS server addresses a[...]

  • Seite 36

    Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway 2-18 Preparing Your Network[...]

  • Seite 37

    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. • Is the gateway on? • Have I connected the gateway correctly? Go to ?[...]

  • Seite 38

    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. Power LED Not On If the Power and other LEDs are off wh en your gateway is turned on: • Make sure that the power cord is properly con[...]

  • Seite 39

    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. • Make sure that your cable inter[...]

  • Seite 40

    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 bytes o f data If the path is working, you see this message: Reply from < IP address >: bytes=32 time=NN ms TTL=xxx If the path is not working, you[...]

  • Seite 41

    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. V erify that the IP address of the gat[...]

  • Seite 42

    Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway A-6 Troubleshooting[...]

  • Seite 43

    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. 802.1 1b, 802.1 1g IEEE specification for wireless networki ng at 1 1 Mbps (802.11b)[...]

  • Seite 44

    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. W orking groups o f the IETF propos[...]

  • Seite 45

    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. PPP See Point-to-Point Pr otocol. Point-to-Point Protocol PPP . A prot ocol[...]

  • Seite 46

    Hardware Manual for the Model CG81 4WG Wireless Cable Modem Gateway B-4 Glossary[...]

  • Seite 47

    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 . What Y ou Will Need Before Y ou Begin Y ou nee[...]

  • Seite 48

    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 802.1 1 networking framework in which devices and computers communicate with each[...]

  • Seite 49

    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 . If this is an ad dition to an existing wireless [...]

  • Seite 50

    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. a. Power o[...]

  • Seite 51

    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. The Found New Hardware W i zar[...]

  • Seite 52

    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. c. If there is more than one wireless network [...]

  • Seite 53

    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. c. Check [...]

  • Seite 54

    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. • The[...]

  • Seite 55

    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. Color Condition Description Red The wireless PC Card has no connection to any other wireless node[...]

  • Seite 56

    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 . Also, for problems with accessing netw ork resources, the W indows software might not be installed and configured properly on [...]

  • Seite 57

    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. Related Publications As you read this document, you may be dire cte d to various RFC documents for further informat[...]

  • Seite 58

    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 . In these rou ting tables, a router builds up a logical picture o[...]

  • Seite 59

    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. The firs t part of the address identifies the network, and the seco nd part identifi[...]

  • Seite 60

    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. They are in this range: 192.0.1.x to 223.255.254.x. • Class D Class D addresses are used [...]

  • Seite 61

    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.” In the example, t[...]

  • Seite 62

    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. T o create more network numbers, you need only shift some bits from the host a ddress to t[...]

  • Seite 63

    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 same netmask for the following reasons: • So that hosts recognize local IP broadcast packets When a device broadcasts to its segment neighb ors, it us[...]

  • Seite 64

    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. All incomi[...]

  • Seite 65

    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. All stations on the network receive and read the reque st. The destina[...]

  • Seite 66

    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. If the PCs need to access the Intern et, they should also be config ured with a gateway address and one or more DN[...]

  • Seite 67

    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. Since user-leve[...]

  • Seite 68

    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 . This exc hange is done by one of two mechanisms. Most hubs provide an Uplink switc h which will exchange th e pairs on one port, allowing that port to be connected to anothe r hub us[...]