Netgear CG814GCMR User Manual

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

NETGEAR, Inc.

4500 Great America Parkway

Santa Clara, CA 95054 USA

Phone 1-888-NETGEAR

SM-CG814MNA-0

September 2002

Downloaded from www.Manualslib.com manuals search engine

Trademarks

NETGEAR is a trademark of Netgear, Inc.

Microsoft, Windows, and Windows NT 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.

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.

Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to

part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

EN 55 022 Declaration of Conformance

This is to certify that the CG814M Wireless Cable Modem Gateway is shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by the application of EN 55 022 Class B (CISPR 22).

Downloaded from www.Manualslib.com manuals search engine

Bestätigung des Herstellers/Importeurs

Es wird hiermit bestätigt, daß das CG814M Wireless Cable Modem Gateway gemäß der im BMPT-AmtsblVfg 243/1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung.

Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.

Certificate of the Manufacturer/Importer

It is hereby certified that the CG814M 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. 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 in a residential area or an adjacent area thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas.

When used near a radio or TV receiver, it may become the cause of radio interference. Read instructions for correct handling.

Customer Support

Refer to the Support Information Card that shipped with your CG814M Wireless Cable Modem Gateway.

World Wide Web

NETGEAR maintains a World Wide Web home page that you can access at the universal resource locator (URL) http://www.netgear.com. A direct connection to the Internet and a Web browser such as Internet Explorer

or Netscape are required.

iii

Downloaded from www.Manualslib.com manuals search engine

Contents

About This Manual................................................................................................................	xi
Audience ...........................................................................................................................	xi
Typographical Conventions ..............................................................................................	xi
Special Message Formats ................................................................................................	xii
Technical Support .............................................................................................................	xii
Chapter 1
Introduction ..........................................................................................................................	1-1
About the CG814M 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
Easy Installation and Management ..........................................................................	1-4
What’s in the Box? ..........................................................................................................	1-5
The Firewall’s Front Panel .......................................................................................	1-5
The Gateway’s Rear Panel ......................................................................................	1-7
Chapter 2
Connecting the Gateway to the Internet ............................................................................	2-1
What You Will Need Before You Begin ...........................................................................	2-1
LAN Hardware Requirements ..................................................................................	2-1
Computer Requirements ....................................................................................	2-1
LAN Configuration Requirements ............................................................................	2-2
Internet Configuration Requirements .......................................................................	2-2
Where Do I Get the Internet Configuration Parameters? ..................................	2-2
Record Your Internet Connection Information ..........................................................	2-4
Contents	v

Downloaded from www.Manualslib.com manuals search engine

Connecting the CG814M Gateway .................................................................................	2-5
Connecting to Your Computer ..................................................................................	2-5
Ethernet .............................................................................................................	2-6
USB ...................................................................................................................	2-6
Wireless .............................................................................................................	2-7
Connecting to your Cable Service Provider .............................................................	2-7
Connecting the Power Adapter ................................................................................	2-8
Log in to the Gateway .....................................................................................................	2-8
Connecting the CG814M Gateway to the Internet ........................................................	2-11
Configuration ..........................................................................................................	2-11
Chapter 3
Wireless Configuration........................................................................................................	3-1
Considerations For A Wireless Network .........................................................................	3-1
Security ....................................................................................................................	3-1
Placement and Range ..............................................................................................	3-2
Wireless Settings ............................................................................................................	3-2
Wireless Settings .....................................................................................................	3-3
Restricting Wireless Access by MAC Address .........................................................	3-3
Configuring Wired Equivalent Privacy (WEP) ..........................................................	3-4
Chapter 4
Protecting Your Network .....................................................................................................	4-1
Protecting Access to Your CG814M Gateway ................................................................	4-1
Changing the Built-In Password ...............................................................................	4-1
Blocking Keywords, Sites, and Services ........................................................................	4-2
Block Keywords and Domains .................................................................................	4-3
Blocking Services .....................................................................................................	4-5
Port Blocking ..................................................................................................................	4-6
Port Forwarding ..............................................................................................................	4-7
Considerations for Port Forwarding ...................................................................	4-9
Port Triggering ................................................................................................................	4-9
Setting Up A Default DMZ Host ....................................................................................	4-11
Respond to Ping on Internet WAN Port ........................................................................	4-11
Chapter 5
Managing Your Network ......................................................................................................	5-1
Network Status Information ............................................................................................	5-1
vi	Contents

Downloaded from www.Manualslib.com manuals search engine

Viewing Gateway Status ..........................................................................................	5-2
Connection Status ....................................................................................................	5-4
Current System Time .........................................................................................	5-5
Configuring LAN IP Settings ...........................................................................................	5-5
LAN IP Setup ...........................................................................................................	5-5
DHCP .......................................................................................................................	5-6
Use router as DHCP server ...............................................................................	5-6
Viewing and Emailing Logged Information .....................................................................	5-7
Enabling Logs Event E-mail Notification ..................................................................	5-8
Erasing Configuration .....................................................................................................	5-8
Running Diagnostic Utilities ............................................................................................	5-9
Chapter 6
Troubleshooting...................................................................................................................	6-1
Basic Functions ..............................................................................................................	6-1
Power LED Not On ...................................................................................................	6-2
Test LED Stays On ...................................................................................................	6-2
Local Link LEDs Not On ...........................................................................................	6-2
Cable Link LED Not On ............................................................................................	6-3
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 ....................................................................................................	A-1
Appendix B
Networks, Routing, and Firewall Basics...........................................................................	B-1
Related Publications ......................................................................................................	B-1
Basic Router Concepts ..................................................................................................	B-1
What is a Router? ...................................................................................................	B-2
Routing Information Protocol ...................................................................................	B-2
IP Addresses and the Internet .................................................................................	B-2
Netmask ..................................................................................................................	B-4
Subnet Addressing ..................................................................................................	B-5
Private IP Addresses ...............................................................................................	B-7
Contents	vii

Downloaded from www.Manualslib.com manuals search engine

Single IP Address Operation Using NAT .................................................................	B-8
MAC Addresses and Address Resolution Protocol .................................................	B-9
Related Documents .................................................................................................	B-9
Domain Name Server ............................................................................................	B-10
IP Configuration by DHCP ....................................................................................	B-10
Internet Security and Firewalls ....................................................................................	B-10
What is a Firewall? .................................................................................................	B-11
Stateful Packet Inspection ......................................................................................	B-11
Denial of Service Attack .........................................................................................	B-11
Wireless Networking ....................................................................................................	B-12
Wireless Network Configuration ............................................................................	B-12
Ad-hoc Mode (Peer-to-Peer Workgroup) ........................................................	B-12
Infrastructure Mode ........................................................................................	B-12
Extended Service Set Identification (ESSID) ........................................................	B-13
Authentication and WEP Encryption .....................................................................	B-13
Wireless Channel Selection ..................................................................................	B-14
Ethernet Cabling ..........................................................................................................	B-15
Uplink Switches and Crossover Cables ................................................................	B-15
Cable Quality .........................................................................................................	B-16
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 ................................	C-2
Install or Verify Windows Networking Components ..........................................	C-2
Enabling DHCP to Automatically Configure TCP/IP Settings ...........................	C-4
Selecting Windows’ Internet Access Method ....................................................	C-4
Verifying TCP/IP Properties ..............................................................................	C-5
Configuring Windows NT, 2000 or XP for IP Networking ........................................	C-5
Install or Verify Windows Networking Components ..........................................	C-5
Verifying TCP/IP Properties ..............................................................................	C-6
Configuring the Macintosh for TCP/IP Networking ..................................................	C-6
MacOS 8.6 or 9.x ..............................................................................................	C-6
MacOS X ..........................................................................................................	C-7
Verifying TCP/IP Properties for Macintosh Computers .....................................	C-8
Verifying the Readiness of Your Internet Account .........................................................	C-9
viii	Contents

Downloaded from www.Manualslib.com manuals search engine

What Is Your Configuration Information? ................................................................	C-9
Obtaining ISP Configuration Information for Windows Computers .................	C-10
Obtaining ISP Configuration Information for Macintosh Computers ...............	C-11
Restarting the Network ................................................................................................	C-12
Glossary..............................................................................................................................	G-1

Contents

Downloaded from www.Manualslib.com manuals search engine

Contents

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

About This Manual

Thank your for purchasing the NETGEAR™ CG814M 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 intermediate to advanced computer and Internet skills. However, basic computer network, Internet, firewall, and VPN technologies tutorial information is provided in the Appendices.

Typographical Conventions

This guide uses the following typographical conventions:

italics	Book titles and UNIX file, command, and directory names.
courier font	Screen text, user-typed command-line entries.
Initial Caps	Menu titles and window and button names.
[Enter]	Named keys in text are shown enclosed in square brackets. The notation
	[Enter] is used for the Enter key and the Return key.
[Ctrl]+C	Two or more keys that must be pressed simultaneously are shown in text
	linked with a plus (+) sign.
ALL CAPS	DOS file and directory names.

About This Manual

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M 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.

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.

xii	About This Manual

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Chapter 1

Introduction

This chapter describes the features of the NETGEAR CG814M Wireless Cable Modem Gateway.

About the CG814M Gateway

The NETGEAR CG814M 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 802.11b wireless Access Point.

The CG814M 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 CG814M Gateway uses Stateful Packet Inspection for Denial of Service (DoS) attack protection and intrusion detection. The CG814M Gateway provides highly reliable Internet access for up to 253 users.

Key Features

The CG814M Gateway offers the following features.

Built-in Cable Modem

The CG814M Gateway connects directly the the WAN using an integrated cable modem. The modem is DOCSIS 1.0 compliant and upgradable to DOCSIS 1.1, guaranteeing that it will work with your local cable service provider.

Introduction

1-1

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

A Powerful, True Firewall

Unlike simple Internet sharing NAT routers, the CG814M Gateway is a true firewall, using stateful packet inspection to defend against hacker attacks. Its firewall features include:

•Denial of Service (DoS) protection

Automatically detects and thwarts Denial of Service (DoS) 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 CG814M Gateway will log security events such as blocked incoming traffic, port scans, attacks, and administrator logins. You can configure the gateway to email the log to you at specified intervals. You can also configure the gateway to send immediate alert messages to your email address or email pager whenever a significant event occurs.

Content Filtering

With its content filtering feature, the CG814M Gateway prevents objectionable content from reaching your PCs. The gateway allows you to control access to Internet content by screening for keywords within Web addresses. You can configure the gateway to log and report attempts to access objectionable Internet sites.

802.11b Standards-based Wireless Networking

The CG814M Gateway includes an 802.11b-compliant wireless access point, providing continuous, high-speed 11 Mbps access between your wireless and Ethernet devices. The access point provides:

•802.11b Standards-based wireless networking at up to 11 Mbps

•64-bit and 128-bit WEP encryption security

•WEP keys can be generated manually or by passphrase

•Wireless access can be restricted by MAC address.

1-2	Introduction

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Configurable Auto Uplink™ Ethernet Connection

With its internal 4-port 10/100 switch, the CG814M 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.

The gateway incorporates Auto UplinkTM technology. Each LOCAL Ethernet port will automatically sense whether the Ethernet cable plugged into the port should have a ‘normal’ connection such as to a PC or an ‘uplink’ connection such as to a switch or hub. That port will then configure itself to the correct configuration. This feature also eliminates the need to worry about crossover cables, as Auto Uplink will accommodate either type of cable to make the right connection.

USB Port

A USB connection to your computer eliminates the need for installing an Ethernet card.

Protocol Support

The CG814M Gateway supports the Transmission Control Protocol/Internet Protocol (TCP/IP). Appendix B, "Networks, Routing, and Firewall Basics" provides further information on TCP/IP.

•IP Address Sharing by NAT

The CG814M Gateway allows several networked PCs to share an Internet account using only a single IP address, which may be statically or dynamically assigned by your Internet service provider (ISP). This technique, known as Network Address Translation (NAT), allows the use of an inexpensive single-user ISP account.

•Automatic Configuration of Attached PCs by DHCP

The CG814M Gateway dynamically assigns network configuration information, including IP, gateway, and domain name server (DNS) addresses, to attached PCs on the LAN using the Dynamic Host Configuration Protocol (DHCP). This feature greatly simplifies configuration of PCs on your local network.

•DNS Relay

When DHCP is enabled and no DNS addresses are specified, the gateway provides its own address as a DNS server to the attached PCs. The gateway obtains actual DNS addresses from the ISP during connection setup and forwards DNS requests from the LAN.

Introduction

1-3

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Easy Installation and Management

You can install, configure, and operate the CG814M Gateway within minutes after connecting it to the network. The following features simplify installation and management tasks:

•Browser-based management

Browser-based configuration allows you to easily configure your gateway from almost any type of personal computer, such as Windows, Macintosh, or Linux. A user-friendly Setup Wizard is provided and online help documentation is built into the browser-based Web Management Interface.

•Diagnostic functions

The gateway incorporates built-in diagnostic functions such as Ping, DNS lookup, and remote reboot. These functions allow you to test Internet connectivity and reboot the gateway. You can use these diagnostic functions directly from the CG814M Gateway when your are connect on the LAN or when you are connected over the Internet via the remote management function.

•Visual monitoring

The gateway’s front panel LEDs provide an easy way to monitor its status and activity.

1-4	Introduction

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

What’s in the Box?

The product package should contain the following items:

•CG814M 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

•Warranty and registration card

•Support information card

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.

The Firewall’s Front Panel

The front panel of the CG814M Gateway (Figure 1-1) contains status LEDs.

Figure 1-1: CG814M Gateway Front Panel

Introduction

1-5

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

You can use some of the LEDs to verify connections. Table 1-1 lists and describes each LED on the front panel of the CG814M Gateway. These LEDs are green when lit.

Table 1-1.	LED Descriptions

Label	Activity	Description

Power	On	Power is supplied to the gateway.
	Off	Power is not supplied to the gateway.

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 transmitted or received on the cable interface.
Traffic	Off	The cable interface is idle.

Wireless	On	Indicates that the wireless Access Point is operating normally.
	Blink	Data is being transmitted or received on the wireless interface.

Local	On (Green)	The Local port has detected link with a 100 Mbps device.
(Local Area	Blink (Green)	Data is being transmitted or received at 100 Mbps.
Network)	On (Yellow)	The Local port has detected link with a 10 Mbps device.
	Blink (Yellow)	Data is being transmitted or received at 10 Mbps.
	Off	No link is detected on this port.

USB	On (Green)	The Local port has detected link with a USB device.
	Blink (Green)	Data is being tranmitted or received through USB.
	Off	No link is detected on the USB port.

1-6	Introduction

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

The Gateway’s Rear Panel

The rear panel of the CG814M Gateway (Figure 1-2) contains the connections identified below.

Figure 1-2: CG814M Gateway Rear Panel

Viewed from left to right, the rear panel contains the following elements:

•AC power adapter input

•802.11b Wireless antenna

•Factory Default Reset push button

•USB port for connecting the gateway to the local computer

•Four Local Ethernet RJ-45 ports for connecting the gateway to the local computers

•Coaxial F-type connector for connecting the gateway directly to your cable service provider

Introduction

1-7

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

1-8	Introduction

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Chapter 2 Connecting the Gateway to the Internet

This chapter describes how to set up the CG814M 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:

1.A computer properly connected to the gateway as explained below.

2.Active Data Over Cable Internet service provided by cable modem account.

3.The Internet Service Provider (ISP) configuration information for your cable modem account.

LAN Hardware Requirements

The CG814M Gateway connects to your LAN using either its twisted-pair Ethernet, USB or 802.11b wireless port.

Computer Requirements

To use the CG814M Gateway on your network, each computer must have either an installed Ethernet Network Interface Card (NIC) , USB Host port or 802.11b wireless adapter. If the computer will connect to your network at 100 Mbps, you must use a Category 5 (CAT5) cable such as the one provided with your gateway.

Connecting the Gateway to the Internet

2-1

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

LAN Configuration Requirements

For the initial connection to the Internet and configuration of your gateway, you will need to connect a computer to the gateway which is set to automatically get its TCP/IP configuration from the gateway via DHCP.

Note: Please refer to Appendix C, "Preparing Your Network" for assistance with DHCP configuration.

Internet Configuration Requirements

Depending on how your ISP set up your Internet account, you will need one or more of these configuration parameters to connect your gateway to the Internet:

•Host and Domain Names

•ISP Domain Name Server (DNS) Addresses

•Fixed or Static IP Address

If you already have cable Internet service and are replacing a cable modem, you may neeed these parameters.

•CG814M Gateway Cable and Device MAC Address, that can be found on the bottom of your gateway, or on the Basic Settings page.

•The MAC Address of the PC that you use to access the internet.

Where Do I Get the Internet Configuration Parameters?

There are several ways you can gather the required Internet connection information.

•Your ISP should have provided you with all the information needed to connect to the Internet. If you cannot locate this information, you can ask your ISP to provide it or you can try one of the options below.

•If you have a computer already connected using the active Internet access account, you can gather the configuration information from that computer.

•For Windows 95/98/ME, open the Network control panel, select the TCP/IP entry for the Ethernet adapter, and click Properties.

•For Windows 2000/XP, open the Local Area Network Connection, select the TCP/IP entry for the Ethernet adapter, and click Properties.

•For Macintosh computers, open the TCP/IP or Network control panel.

2-2	Connecting the Gateway to the Internet

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

•You may also refer to the CG814W Resource CD for the NETGEAR Router ISP Guide which provides Internet connection infromation for many ISPs.

Once you locate your Internet configuration parameters, you may want to record them on the page below.

Connecting the Gateway to the Internet

2-3

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Record Your Internet Connection Information

1. Print this page. Fill in the configuration parameters from your Internet Service Provider (ISP).

Fixed or Static IP Address: If you have a static IP address, record the following information. For example, 169.254.141.148 could be a valid IP address.

Fixed or Static Internet IP Address: ______ . ______ . ______ . ______

Subnet Mask: ______ . ______ . ______ . ______

Gateway IP Address: ______ . ______ . ______ . ______

ISP DNS Server Addresses: If you were given DNS server addresses, fill in the following: Primary DNS Server IP Address: ______ . ______ . ______ . ______

Secondary DNS Server IP Address: ______ . ______ . ______ . ______

Host and Domain Names: Some ISPs use a specific host or domain name like CCA7324-A or attbi. If you haven’t been given host or domain names, you can use the following examples as a guide:

•If your main e-mail account with your ISP is aaa@yyy.com, then use aaa as your host name. Your ISP might call this your account, user, host, computer, or system name.

•If your ISP’s mail server is mail.xxx.yyy.com, then use xxx.yyy.com as the domain name.

ISP Host Name: _________________________ ISP Domain Name: _______________________

MAC Addresses of CG814M 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 CG814M Gateway. The Device Address is the equivalent of a PC behind the cable modem, and can be “cloned”. Cloning allows you to specify the MAC address of the packets the gateway sends to the internet. If you clone the MAC Address of your PC you will not have to register the Device Address of your gateway.

Cable Modem MAC (listed on the bottom of your gateway): ______________________________

Device MAC (listed on the bottom of your gateway): ____________________________________

PC MAC Address (listed on the Basic Settings page): ___________________________________

2-4	Connecting the Gateway to the Internet

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Connecting the CG814M Gateway

Before using your modem, you need to do the following:

•Connect to your computer, using either Ethernet, USB or wireless (see page 2-6).

•Connect the line from your cable service provider to the cable port of the gateway (see page 2-7).

•Connect the power adapter (see page 2-8).

A typical installation is shown in Figure 2-1, below

Figure 2-1: Typical installation using Ethernet.

Connecting to Your Computer

Your computer will attach to either the Ethernet, USB or wireless ports on the CG814M Gateway.

Connecting the Gateway to the Internet

2-5

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Ethernet

To connect your computer to the modem via Ethernet:

1.Locate the Category 5 Ethernet cable which came with your modem.

2.Connect your computer to the modem using the Ethernet cable.:

Note: Note: The CG814M Gateway incorporates Auto UplinkTM technology. Each LOCAL Ethernet port will automatically sense whether the cable plugged into the port should have a 'normal' connection (e.g. connecting to a PC) or an 'uplink' connection (e.g. connecting to a switch or hub). That port will then configure itself to the correct configuration. This feature also eliminates the need to worry about crossover cables, as Auto Uplink will accommodate either type of cable to make the right connection.

USB

To connect your computer to the modem via USB involves installing the USB driver:

Note: The USB connection option is only available for Windows PCs. Also, Windows 95 does not support USB without special operating system upgrades and patches.

1. Install the USB driver

a.Insert the CD which came with your modem into the CD drive of your computer.

a.Connect the USB cable to your modem and plug in the AC power for the modem.

b.Use the USB cable to connect your computer to the modem.

2-6	Connecting the Gateway to the Internet

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

The found new hardware Windows installation wizard will prompt you for the drivers.

Browse to the CD and install the USB driver by clicking through the Windows wizard prompts.

Wireless

Detailed instructions on configuring your wireless devices for TCP/IP networking are provided in the next chapter. However, if you already have a functioning wireless network and you wish to use a wireless PC to initially configure the router, you will need to change the settings of that PC to match the default settings of the router:

•The SSID should be Wireless (note the capitalization).

•The Channel should be set to 6.

•WEP encryption is disabled.

Connecting to your Cable Service Provider

Using a coaxial cable provided by your cable service provider, connect the coaxial cable jack on you wall to the cable connector on the gateway.

The Cable Link LED will be solid green when your gateway has synchronized with the cable headend.

Connecting the Gateway to the Internet

2-7

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Connecting the Power Adapter

To connect the power adapter to the gateway:

1.Plug the connector of the power adapter into outlet on the rear panel of the modem.

2.Plug the other end of the adapter into an AC power outlet.

3.Verify that the PWR LED on the modem is lit.

After applying power to the gateway, complete the following steps to verify that power is correctly applied:

1.When power is first applied, verify that the Power LED comes on. All the numbered LAN LEDs will be briefly tested.

2.After approximately 10 seconds, verify that the local Ethernet or USB port LED is lit for the port that is connected to your computer.

If a port’s LED is lit, a link has been established to the connected device. If a local Ethernet port is connected to a 100 Mbps device, verify that the port’s LED is green. If the port is 10 Mbps, the LED should be yellow.

Note: To connect to the gateway, your computer needs to be configured to obtain an IP address automatically via DHCP. Please refer to Appendix C, "Preparing Your Network" for instructions on how to do this.

1.Turn on the gateway.

2.Now, turn on your computer.

Note: If you usually run software to log in to your Internet connection, do not run that software.

2-8	Connecting the Gateway to the Internet

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Now that the gateway, and the computer are turned on, verify the following:

•When power on the gateway was first turned on, the PWR light went on, the numbered LAN LEDs turned on for a few seconds.

•The gateway’s LOCAL LINK/ACT lights are lit for any computers that are connected to it.

•The gateway’s Cable Link LED is lit, indicating a link has been established to the cable service provider.

3.Next, use a browser like Internet Explorer or Netscape to log in to the gateway at its default address of http://192.168.0.1.

Figure 2-2: Log in to the gateway

A login window opens as shown in Figure 2-3 below:

Figure 2-3: Login window

Connecting the Gateway to the Internet

2-9

Downloaded from www.Manualslib.com manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

For security reasons, the gateway has its own user name and password. When prompted, enter admin for the gateway User Name and password for the gateway Password, both in lower case letters..

Note: The user name and password are not the same as any user name or password you may use to log in to your Internet connection.

4. Connect to the Internet

Figure 2-4: Connection page.

You are now connected to the gateway’s Connection page, shown in Figure 2-4. This page provides detailed information about your cable connection.

Note: If you were unable to connect to the gateway, please refer to “Basic Functions” on page 6-1.

2-10	Connecting the Gateway to the Internet

Downloaded from www.Manualslib.com manuals search engine

+ 72 hidden pages