Wireless-G Cable Gateway
Contents
1. Use this guide to install the following product WCG200 CC COPYRIGHT amp TRADEMARKS Specifications are subject to change without notice Linksys is a registered trademark or trademark of Cisco Systems Inc and or its affiliates in the U S and certain other coun tries Copyright 2003 Cisco Systems Inc All rights reserved Other brands and prod uct names are trademarks or registered trademarks of their respective holders FCC STATEMENT This Wireless G Cable Gateway has been tested and complies with the specifications 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 according to the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a par ticular installation If this equipment does cause harmful interference to radio or television reception which is found 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 e Reorient or relocate the receiving antenna e Increase the separation between the equipment or device e Connect the equipment to an outlet other than the receiver s e Consult a dealer or an experienced radio TV techni2. A dynamic IP address is automatically assigned to a device on the network such as PCs and print servers These IP addresses are called dynamic because they are only temporarily assigned to the PC or device After a certain time period they expire and may change If a PC logs onto the network or the Internet and its dynamic IP address has expired the DHCP server will assign it anew dynamic IP address DHCP Dynamic Host Configuration Protocol Servers DHCP frees you from having to assign IP addresses manually every time a new user is added to your network PCs and other network devices using dynamic IP addressing are assigned a new IP address by a DHCP server The PC or net work device obtaining an IP address is called the DHCP client By default the Cable Gateway s WAN setting is DHCP client A DHCP server can either be a designated PC on the network or another net work device such as the Cable Gateway By default the Cable Gateway acts as a DHCP server for your local network If you already have a DHCP server run ning on your network you must disable that DHCP server or the Cable Gateway s DHCP s feature If you run more than one DHCP server on your network you will experience network errors such as conflicting IP addresses Note Since the Cable Gateway is a device that connects two networks it needs two IP addresses one for the LAN side and one for the WAN side In this User Guide you ll see references to the
3. settings to a range from 1024 to 1030 on the DCC option and Forwarding page of the Web based Setup Utility If your questions are not addressed here refer to the Comcast Home Networking page online at Attp www homenetworking comcast net 31 32 Appendix B Glossary 10BaseT An Ethernet standard that uses twisted wire pairs 100BaseTX IEEE physical layer specification for 100 Mbps over two pairs of Category 5 UTP or STP wire 802 11b One of the IEEE standards for wireless networking hardware Products that adhere to a specific IEEE standard will work with each other even if they are manufactured by different companies The 802 11b standard specifies a maximum data transfer rate of 11Mbps an operating frequency of 2 4GHz and WEP encryption for security 802 11b networks are also referred to as Wi Fi networks 802 119 A wireless networking standard that specifies a maximum data trans fer rate of 54Mbps using OFDM modulation an operating frequency of 2 4GHz backward compatibility with IEEE 802 11b devices and WEP encryption for security Adapter Printed circuit board that plugs into a PC to add to capabilities or connectivity to a PC In a networked environment a network interface card NIC is the typical adapter that allows the PC or server to connect to the intranet and or Internet Auto negotiate To automatically determine the correct settings The term is often used with communications and networking For ex
4. the TCP IP Protocol or your Ethernet adapter s documentation to install TCP IP now Click the Properties button Click the IP Address tab Select Obtain an IP address automati cally as shown in Figure 4 2 Piian Configuration identification Access Contrai The irm ny conponerds ac naka UB Chart for Microsok Metracaks OS Dal Up Adopter i R sas F Te I BR ee Fad Eller olarai m LME CT Friman Neteeork Loguer a Eee ol CT Vie Mc Haik _Bemanishsro Dessin CREAR opp NERS lie sres nates TEP AIF Poupees Dinding Sree ee A eee DNS Cotation Gato WINS Coran IF dress An IP addtess con be automatically assigned to this compute IF poii Fatal dons not aaa IP address ak ec ag E M an iP addres automates Figure 4 2 23 4 Now click the Gateway tab to ensure that the Installed Gateway field 1s left 6 blank Click the OK button Click the OK button again Windows may ask you for the original Windows installation disk or additional files Supply them by pointing to the correct file location CB D win98 D win9x c windows options cabs etc if D is the letter of your CD ROM drive Windows may ask you to restart your PC Click the Yes button If Windows does not ask you to restart restart your computer anyway Windows 2000 l 24 Go to the Network screen by clicking the Start button Click Settings and then Con
5. Cable Gateway s Back Panel Ports The Cable Gateway s ports are located on the back panel of the Cable Gateway as shown in Figure 2 1 Figure 2 1 On Off Switch This switch is used for turning the Cable Gateway on and off Power The Power port is where the power adapter is con nected Reset Press this button if you need to restore the Cable Gateway to its factory default settings USB This is where you can use a USB cable to connect to the Cable Gateway Ports 1 4 These four ports are where network devices such as PCs print servers and remote hard drives are con nected to your local area network LAN Cable The Cable port is where the coaxial Cable line is connected The Reset Button Pressing the Reset Button and holding it in for a few seconds will clear all of the Cable Gateway s data and restore the factory defaults This should be done only if you are experiencing networking problems and have exhausted all of the other troubleshooting options By resetting the Cable Gateway you run the risk of creating conflicts between your PCs actual IP Addresses and what the Cable Gateway thinks the IP Addresses of the PCs should be You may be forced to reboot each network PC Rebooting the Cable Gateway You should only reboot the Cable Gateway after all other troubleshooting methods have been exhausted There are two ways to reboot the Cable Gateway 1 Turn the Cable Gateway s power off for a few seconds an
6. Has a transfer rate of 10 Mbps Forms the underlying transport vehicle used by several upper level protocols including TCP IP and XNS Firewall A firewall is a set of related programs located at a network gateway server that protects the resources of a network from users from other networks The term also implies the security policy that is used with the programs An enterprise with an intranet that allows its workers access to the wider Internet installs a firewall to prevent outsiders from accessing its own private data resources and for controlling what outside resources to which its own users have access Basically a firewall working closely with a router examines each network packet to determine whether to forward it toward its destination FTP File Transfer Protocol A protocol used to transfer files over a TCP IP network Internet UNIX etc For example after developing the HTML pages for a Web site on a local machine they are typically uploaded to the Web serv er using FTP FTP includes functions to log onto the network list directories and copy files It can also convert between the ASCII and EBCDIC character codes FTP oper ations can be performed by typing commands at a command prompt or via an FTP utility running under a graphical interface such as Windows FTP transfers can also be initiated from within a Web browser by entering the URL preceded with ftp Unlike e mail programs in which graphics and program
7. Problems and Solutions Frequently Asked Questions Appendix E Glossary Appendix F Specifications Environmental 28 28 29 33 41 42 Chanter 1 introduction Congratulations on the purchase of your Wireless G Cable Gateway This all in one device has a built in cable modem router and switch which will enable you to get connected to your high speed Internet service through its USB wired or wireless connections Let s take a look at what each function can help you do e The Cable Modem connects you to your the high speed Internet connec tion e Connect your computer to the Cable Gateway via USB or use the built in 4 port 10 100 Ethernet Switch and share files printers and play head to head games Connect four PCs directly or connect to more hubs and switches to create as big a network as you need e The Wireless capability allows you to connect PCs game consoles and other devices to your home network without running cables through the house e The Cable Gateway s Router function ties it all together and lets your whole network share one high speed Internet connection You can share Internet access with up to five computers e The Cable Gateway has an advanced firewall to help protect your data and privacy by keeping Internet intruders and attackers out Wireless transmis sions can be protected by powerful data encryption An Introduction to LANs and WANs Simply put a router is a network device that co
8. WAN IP address and the LAN IP address Since the Cable Gateway has firewall security the only IP address on your network that can be seen from the Internet is the Cable Gateway s WAN IP address Network Setup Overview This user guide covers information about your home network e Chapter 2 Getting to Know the Cable Gateway This chapter instructs you on the Cable Gateway s ports connections LEDs and buttons e Chapter 3 Connecting the CableGateway This chapter instructs you on how to connect the Cable line to the Gateway and connect the PC s to the Cable Gateway e Chapter 4 Configuring the PCs This chapter instructs you on how to configure your PC s for a DHCP con nection if the network settings are not already set to DHCP Even though a technician probably established your initial connection you may need the information provided in this user guide for reference or troubleshoot ing After the PC s are configured to access the Internet through the Gateway you can alter the Gateway s settings further refer to the Comcast Home Networking Getting Started Guide For example you can adjust security fea tures and other settings to enable online gaming run Internet servers config ure a wireless LAN and more Notebook with Wireless Adapter WAN S PC with Wireless G ooo Cable Gateway i Sn A Ethernet Adapter Figure 1 1 Chapter 2 Getting to Know the Cable Gateway The
9. When an organization sets up its computer users with a con nection to the Internet an IP address must be assigned to each machine 33 34 Without DHCP the IP address must be entered manually at each computer and if computers move to another location in another part of the network a new IP address must be entered DHCP lets a network administrator supervise and dis tribute IP addresses from a central point and automatically sends a new IP address when a computer is plugged into a different place in the network DHCP uses the concept of a lease or amount of time that a given IP address will be valid for a computer The lease time can vary depending on how long a user is likely to require the Internet connection at a particular location It s especially useful in education and other environments where users change fre quently Using very short leases DHCP can dynamically reconfigure networks in which there are more computers than there are available IP addresses DHCP supports static addresses for computers containing Web servers that need a permanent IP address Dynamic IP Address An IP address that is automatically assigned to a client station in a TCP IP network typically by a DHCP server Network devices that serve multiple users such as servers and printers are usually assigned static IP addresses Ethernet IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium
10. a series of sub groups or subnets The mask is a binary pattern that is matched up with the IP address to turn part of the host ID address field into a field for subnets 37 38 Switch 1 A data switch connects computing devices to host computers allowing a large number of devices to share a limited number of ports 2 A device for making breaking or changing the connections in an electrical cir cuit TCP Transmission Control Protocol A method protocol used along with the IP Internet Protocol to send data in the form of message units datagram between network devices over a LAN or WAN While IP takes care of handling the actual delivery of the data routing TCP takes care of keeping track of the individual units of data called packets that a message is divided into for effi cient delivery over the network TCP is known as a connection oriented pro tocol due to requiring the receiver of a packet to return an acknowledgment of receipt to the sender of the packet resulting in transmission control TCP IP Transmission Control Protocol Internet Protocol The basic com munication language or set of protocols for communications over a network developed specifically for the Internet TCP IP defines a suite or group of protocols and not only TCP and IP Transmit Channel The channel or frequency that your wireless network is cur rently transmitting on Changes must be made in the Wireless section within the Feature Se
11. files have to be attached FTP is designed to handle binary files directly and does not add the overhead of encoding and decoding the data Full Duplex The ability of a device or line to transmit data simultaneously in both directions Gateway A device that interconnects networks with different incompatible communications protocols Half Duplex Data transmission that can occur in two directions over a single line but only one direction at a time Hardware Hardware is the physical aspect of computers telecommunica tions and other information technology devices The term arose as a way to dis tinguish the box and the electronic circuitry and components of a computer from the program you put in it to make it do things The program came to be known as the software IP Internet Protocol The method or protocol by which data is sent from one computer to another on the Internet It is a standard set of rules procedures or conventions relating to the format and timing of data transmission between two computers that they must accept and use to be able to understand each other IP Address In the most widely installed level of the Internet Protocol IP today an IP address is a 32 binary digit number that identifies each sender or receiver of information that is sent in packet across the Internet When you request an HTML page or send e mail the Internet Protocol part of TCP IP includes your IP address in the message actuall
12. other Each signal on twisted pair requires both wires Since some telephone sets or desktop locations require multiple connections twisted pair is sometimes installed in two or more pairs all within a single cable WAN Wide Area Network A communications network that covers a rela tively large geographic area consisting of two or more LANs Broadband com munication over the WAN is often through public networks such as the tele phone DSL or cable systems or through leased lines or satellites In its most basic definition the Internet could be considered a WAN WINIPCFG Configuration utility based on the Win32 API for querying defining and managing IP addresses within a network A commonly used util ity for configuring networks with static IP addresses 39 40 Model Number Standards Ports Buttons Cabling Type Cable LAN USB LEDs Security WCG200 CC DOCSIS 1 0 DOCSIS 1 1 DOCSIS 2 0 IEEE 802 119 IEEE 802 11b 4 RJ 45 10 100 1 USB 1 Female Coax F Connector Power ON OFF switch Reset Coaxial UTP Category 5 or better Type B USB Power Cable Activity Ethernet USB Wireless WEP MAC address filtering SPI Firewall Environmental Dimensions Unit Weight Power Certifications Operating Temp Storage Temp Operating Humidity Storage Humidity 7 32 X 2 48 X 6 08 186 mm x 63 mm x 154 5 mm 1 5 Ib 0 68 kg 12VDC 1A DOCSIS 1 1 DOCSIS 2 0 FCC Part 15B Class B UL
13. prog thal makes o haidvesre device work Figure 3 1 2 Select Search for the best driver for your device and click the Next but ton Add Hi mw he dw arr Wiz ard Wat do you wart Wc to Sih bes devour ces Ta Hu LA ali din ri per ee net ere aera eres Figure 3 2 12 3 Select CD ROM drive as the only location where Windows will search for the driver software and click the Next button Add New Hardware wizard Windows mall search for reies in its dawer database mn pou hand dies and on ang ol lhe n eleclen locshons Chck Hex lo gal he search E Mi Bafa Unda T US med apea Figure 3 3 4 Windows will notify you that it has identified the appropriate driver and is ready to install it Click the Next button Add New Hardware Wizard Windows has lourd an updated dieser for iis devine ard Figure 3 4 13 14 5 Windows will begin installing the driver for the modem At this point the installation may require files from your Windows 98 CD ROM If prompt ed insert your Windows 98 CD ROM into your CD ROM drive and enter d win98 in the box that appears where d is the letter of your CD ROM drive If you were not supplied with a Windows 98 CD ROM your Windows files may have been placed on your hard drive by your computer manufacturer While the location of these files may vary many manufac turers use c windows options cabs as the path Try entering this p
14. to be able to communicate with the Cable Gateway To do this you need to configure your PC s network settings to obtain an IP or TCP IP address automatically called DHCP Computers use IP addresses to communicate with each other across a local network or the Internet You will need to know which operating system your computer is running such as Windows 98 Me 2000 or XP One way to find out which operating system you have is by clicking the Start button and selecting the Settings option Then open the Control Panel and double click the System icon The screen that appears should display your operating system You may need to configure each computer you are connecting to the Cable Gateway The next few pages show you step by step how to configure your network set tings based on the type of Windows operating system you are using If your operating system is not referenced here refer to your operating system s documentation Windows 98 and Me eZ 1 Go to the Network screen Do this by clicking the Start button selecting Settings and opening the Control Panel From there double click the Network icon 2 On the Configuration tab select the TCP IP line for the applicable Ethernet adapter as shown in Figure 4 1 Do not choose a TCP IP entry whose name mentions DUN PPPoE VPN or AOL If the word TCP IP appears by itself select that line If there is no TCP IP line listed refer to Appendix C Installing
15. 1950 EN60950 CE EN 55022 Class B VCCI IC 03 0 C to 40 C 32 F to 104 F 20 C 70 C 4 F 158 F 20 to 90 Non Condensing 20 to 90 Non Condensing 41 OLINKSys www linksys com Copyright 2003 Linksys All Rights Reserved
16. 3 mms aT USB Port Connection First make sure that all the devices that you ll be working with are powered down including your PCs and the Cable Gateway 10 Connect the power adapter to the Cable Gateway Turn on the Cable Gateway Figure 3 3 Make sure there is an Ethernet cable connected from the Cable Gateway to every PC that you want on your local network If you are connecting more than four PCs to the Cable Gateway via Ethernet you will also need to con nect a hub or switch to the Cable Gateway as shown in Figure 3 4 Plug the other end of the power adapter into the electrical outlet preferably a surge protector Figure 3 4 Contact Comcast to activate your account They will need what is called a MAC Address for the cable modem capability of your Cable Gateway in order to set up your account The 12 digit modem MAC address is printed on a bar code label on the bottom of the Cable Gateway Once you have given them this number Comcast should be able to activate your account Then turn on the first PC that you want to use to configure the Cable Gateway _ Important Make sure to contact Comcast with your MAC Address to activate your account Go to Chapter 4 Configuring the PCs Connect the power adapter to the Cable Gateway as Turn on the Cable Gateway Then turn on your PC Figure 3 4 Connect the coaxial cable that is provided by Comcast to the Cable port
17. ROM drives and click the Next button Found Peed Hordaare is dl Locate Dyer Files here cho Leu Went WE bo shone bor dree bikes Sgach Inr riva fez k e foloeing haka devise a USE Cable Modern Ew he wood searches for alabie diens m te dower database on your conpuler aiin arg of the bokong ophensl sesch locations that you specip To atad the search cick Newt II pou are searching on a Boppy dick ot CLAD deve male LE LL ES ie TI ag otaka Tpha seach locations 7 Figy iit bre FF CIMO diver CT Spsciy abon pm SES a Se Se me Se Ss Se ee ee em Figure 3 1 3 18 5 Windows will notify you that it has located the appropriate driver and is ready to install it Click the Next button Found Red Horde er Dine Filc Scorch Hesuks Die azard kas hres eang hor creer bes hor ou hardware diewce 22 Tha red kar a is Fo this Folie cris P USB Cable Moden Windows found a vet ox thi device Ta ntl the diver Windes found click ect Figure 3 14 6 When Windows has completed installing the driver click Finish Found Mew Harda wE Wie wd Completing the Found New Hardware Wizard 7 Linksys POS ndr has Aches insteling the corse bor thes device To dre hir wead click Freh Figure 3 15 The Windows 2000 driver installation is complete Return to step 7 of the USB Port Connection section to activate your account and complete the setup process 19 Installing the USB Driver f
18. ample Ethernet 10 100 cards hubs and switches can determine the highest speed of the node they are connected to and adjust their transmission rate accordingly Bit A binary digit The value 0 or l used in the binary numbering system Also the smallest form of data Boot To cause the computer to start executing instructions Personal comput ers contain built in instructions in a ROM chip that are automatically executed on startup These instructions search for the operating system load it and pass control to it Broadband A data transmission scheme in which multiple signals share the bandwidth of a medium This allows the transmission of voice data and video signals over a single medium Cable television uses broadband techniques to deliver dozens of channels over one cable Browser A browser is an application program that provides a way to look at and interact with all the information on the World Wide Web or PC The word browser seems to have originated prior to the Web as a generic term for user interfaces that let you browse text files online Buffer A buffer is a shared or assigned memory area used by hardware devices or program processes that operate at different speeds or with different sets of priorities The buffer allows each device or process to operate without being held up by the other In order for a buffer to be effective the size of the buffer and the algorithms for moving data into and out of the buffer need
19. ath into the box If no files are found check your computer s documentation or con tact your computer manufacturer for more information 6 After Windows has completed installing this driver click Finish Add Hes Hardware wizard aa Linders VACA indosrs hee ieerhed inetaling the miras lha pour rem hanere device neque Figure 3 5 7 When asked if you want to restart your PC remove all diskettes and CD ROMs from the PC and click Yes If Windows does not ask you to restart your PC click the Start button choose Shut Down choose Restart then click Yes The Windows 98 driver installation is complete Return to step 7 of the USB Port Connection section to activate your account and complete the setup process Installing the USB Driver for Windows Millennium 1 Start up your PC in Windows Millennium Windows will detect new hard ware connected to your PC i FE un tre ER CRE i i ji P Ne cw H THE F ound LEE EE TEEN TU ay USE Cable Modem ine coh Cae pO software foe it Figure 3 6 2 Insert the Setup CD into your CD ROM drive When Windows asks you for the location of the best driver select Automatic search for a better driver Recommended and click the Next button Add New H adware Wis ard ji 5 Nites ip i a pn K 1 j Winds haa und he felon rew harnam USB Cable Modem a p a E aati Grae aie that supports pour Fondem IF your hardasare came wih i eo EAE A RE Nest What wo
20. ble Gateway s web configuration screen What can do You may have to remove the proxy settings on your Internet browser e g Netscape Navigator or Internet Explorer Or remove the dial up settings on your browser Check with your browser documentation What is DMZ Demilitarized Zone DMZ allows one IP address computer to be exposed to the Internet Some applications require multiple TCP IP ports to be open It is recommended that you set your computer with a static IP if you want to use DMZ If DMZ is used does the exposed user share the public IP with the Cable Gateway No Does the Cable Gateway pass PPTP packets or actively route PPTP sessions The Cable Gateway allows PPTP packets to pass through Is the Cable Gateway cross platform compatible Any platform that supports Ethernet and TCP IP is compatible with the Cable Gateway How many ports can be simultaneously forwarded Theoretically the Cable Gateway can establish 520 sessions at the same time but you can only for ward 10 ranges of ports Does the Cable Gateway replace a modem Is there a cable modem in the Cable Gateway Yes The Cable Gateway has an integrated cable modem so this product will replace your current cable modem How do get mIRC to work with the Cable Gateway Set port forwarding to 113 for the computer on which you are using mIRC If you are experiencing dif ficulty after setting the port forwarding try changing the Direct Client to Client DCC
21. cian for assistance This device complies with Part 15 of the FCC Rules Operation is subject to the follow ing two conditions e This device may not cause harmful interference e This device must accept any interference received including interference that may Cause undesired operation SAFETY NOTICES e Caution To reduce the risk of fire use only No 26 AWG or larger telecommunication line cord e Do not use this product near water for example in a wet basement or near a swim ming pool e Avoid using this product other than a cordless type during an electrical storm There may be a remote risk of electric shock from lightning WCG200 CC UG 30904NC BW Table of Contents Chapter 1 Introduction The Wireless G Cable Gateway An Introduction to LANs and WANs IP Addresses Network Setup Overview Chapter 2 Getting to Know the Cable Gateway The Cable Gateway s Back Panel Ports The Reset Button Rebooting the Cable Gateway The USB Icon USB Cabling The Cable Gateway s Front Panel LEDs Chapter 3 Connecting the Cable Gateway Overview Ethernet Port Connection USB Port Connection Installing the USB Driver for Windows 98 Installing the USB Driver for Windows Millenium Installing the USB Driver for Windows 2000 Installing the USB Driver for Windows XP Chapter 4 Configuring the PCs Overview Windows 98 and Me Windows 2000 Windows XP ER D D mm oO Ja AW OI 22 22 22 24 26 Appendix A Troubleshooting Common
22. d power it back on again 2 Unplug the Cable Gateway s power adapter and plug it back in again Rebooting the Cable Gateway may cause conflicts with IP Addresses The USB Icon The USB icon shown in Figure 2 3 marks a USB port on a PC or device Figure 2 2 USB Cabling The Cable Gateway comes with one USB cable One end of the USB cable is connected to the Cable Gateway and the other end is connected to a computer s USB port The picture shows two USB ports as they might appear on your computer Note the two USB icons marking the ports Figure 2 3 The Cable Gateway s Front Panel LEDs Internet Edharnit Cable Activity Power Internet Cable Internet Activity Ethernet 1 4 USB Wireless Figure 2 4 Green or red The Green Power LED is solid when the Cable Gateway is powered on If the LED lights up red there is an error Green The Green LED will go through a series of flashes as the Cable Gateway goes through its startup and registration process It will remain solid when registration is complete and the Cable Gateway is operational Green This LED flashes when data is being sent or received through the cable Gateway interface Green or red Ethernet 1 4 LED serves multiple pur poses Ifthe LED is solid green the Cable Gateway is successfully connected to a device through the corre sponding port 1 2 3 or 4 If the LED is flashing green the Cable Gateway is actively
23. e Cable Gateway s front and verify that they are lit appropriately e Verify that Comcast has been given the correct MAC Address for the cable modem function 2 I can t connect to the Cable Gateway e Verify that the Cable Gateway is properly installed LAN connections are OK and it is powered ON e Make sure that your PC and the Cable Gateway are on the same network segment If you are not sure initiate the DHCP function and let the PC get the IP address automatically e Make sure that your PC is using an IP address within the default range of 192 168 0 2 to 192 168 0 254 and thus compatible with the Cable Gateway default IP Address of 192 168 0 1 e Also the Subnet Mask should be set to 255 255 255 0 to match the Cable Gateway For the Cable Gateway you can check these settings by using Control Panel Network to check the Properties for the TCP IP protocol 3 The Cable LED will not go solid e Verify that the coaxial cable is firmly plugged into the Cable Gateway s cable port with the other end plugged directly into the Cable wall jack e Verify that your Cable account is active e Verify that Comcast has been given the correct MAC Address for the cable modem function 4 can t access the Internet from the Cable Gateway e Check if both ends of the network cable and power adapter are properly connected Check if the status LEDs on the front panel are functioning properly e If using Windows 98 or Me check the TCP IP set
24. e sde Etre HE eres Figure 4 5 6 Restart your computer 4 Select Internet Protocol TCP IP as shown in Figure 4 4 and click the 29 The following instructions assume you are running Windows XP with the default interface If you are using the Classic interface where the icons and menus look like previous Windows versions please follow the instructions for Windows 2000 26 l Open the Network screen To do this click the Start button and select the Control Panel From there click the Network and Internet Connections icon followed by the Network Connections icon Select the Local Area Connection icon for the applicable Ethernet adapter usually it is the first Local Area Connection listed Double click the Local Area Connection and click the Properties button rh LA rer Local Alea Connection 39 Status ii LE es General Support Connector FE if Taus Connected Durar 2 days 66 16 E Spend 1000 hips a Avy i Gent MNT Meceived Ch F1 a 4 Figure 4 6 3 The Local Area Connection Status screen will appear Click the Properties button 4 Select Internet Protocol TCP IP and click the Properties button Fa LEE Les Lis eve bas RL IFTE EF Bay ra REA TE i LUS En i ul E Uncal Ares Connection 39 Properties ZE General authorisation Achore Corned wa E Links LME DOUTE Fest Elhemet fedepta L E TOOTS i This correction uses the follora
25. emporary offices and at meetings A notebook computer sometimes called a laptop com puter typically weighs less than five pounds and is three inches or less in thick ness Packet A unit of data routed between an origin and a destination in a network Packet Filtering Discarding unwanted network traffic based on its originat ing address or range of addresses or its type e mail file transfer etc PC Card A credit card sized removable module that contains memory I O or a hard disk Port A pathway into and out of the computer or a network device such as a switch or router For example the serial and parallel ports on a personal com puter are external sockets for plugging in communications lines modems and printers RJ 45 Registered Jack 45 A connector similar to a telephone connector that holds up to eight wires used for connecting Ethernet devices Router Protocol dependent device that connects subnetworks together Routers are useful in breaking down a very large network into smaller subnet works they introduce longer delays and typically have much lower throughput rates than bridges Server Any computer whose function in a network is to provide user access to files printing communications and other services Software Instructions for the computer A series of instructions that performs a particular task is called a program The two major categories of software are system software and applicatio
26. n software System software is made up of control programs such as the operating system and database management sys tem DBMS Application software is any program that processes data for the user A common misconception is that software is data It is not Software tells the hardware how to process the data SPI Stateful Packet Inspection A firewall technology that monitors the state of the transaction so that it can verify that the destination of an inbound pack et matches the source of a previous outbound request It examines not just the headers of the packet but also the contents to determine more about the pack et than just its source and destination information It is called stateful because verifies that the stated destination computer has previously requested the cur rent communication In this way it verifies that all communications are initiat ed by the recipient computer and are taking place only with sources that are known and trusted from previous interactions In addition to being a more rig orous inspection stateful packet inspection closes off ports until connection to the specific port 1s requested This allows an added layer of protection from the threat of port scanning SSID Service Set IDentifier A unique name shared among all points in a wireless network The SSID must be identical for each point in the wireless net work and is case sensitive Subnet Mask The method used for splitting IP networks into
27. ng eras Chant for Microsoft Heimis BE l File and Prier Shing Fa icareantt Helwa ea x Proc TOPAR i 1 f t fates PAETE TI 3 Tiaris Godin Pii rdar Pi idou T SE wa aha reia ah pectic thal oe ai f Aie ea ird eak f E Shon iconin notation aea when connected Figure 4 7 Select Obtain an IP address automatically Once the new window appears click the OK button Click the OK button again or the Close but ton if any settings were changed to complete the PC configuration internet Protocal TCP Properties a ii EEEREN x 11 You can get IP atiina caged cpu WUC pour ncaa appi 10 the eapehity Othe pow reel in eck pour reak ardar leu Li he eppenprists IP aie HO ba an IP dd autrui 7 lige the kimmnglF pi s TES ASSL ee GF Dhan DNS serres pide sulomsticaly LES the ton ONE sewer adder Figure 4 8 6 Restart your computer 21 Appendix A Troubleshooting Common Problems and Solutions 28 This section provides possible solutions to problems regarding the Cable Gateway s installation and operation If your situation is described here the problem should be solved by applying the corresponding solution For more information refer to the Comcast Home Networking page at http www homenetworking comcast net 1 The Cable Gateway is not working e Verify that the Power cord and other network cables are plugged in e Check the Ethernet and Cable LEDs on th
28. nnects two networks together The Cable Gateway has a built in router that connects your Local Area Network LAN which is the group of PCs in your home or office to the Wide Area Network WAN which is the Internet The Cable Gateway processes and regulates the data that travels between these two networks Think of the Cable Gateway as a network device with two sides the first side is made up of your private Local Area Network LAN of PCs The other public side is the Internet or the Wide Area Network WAN outside of your home or office The Cable Gateway s firewall protects your network of PCs so users on the pub lic Internet side cannot see your PCs This is how your local network remains private The Cable Gateway protects your network by inspecting the first packet coming in through the WAN port before delivery to the final desti nation in the local network The Cable Gateway inspects Internet port services like the web server ftp server or other Internet applications and 1f allowed will forward the packet to the appropriate PC on the LAN side IP Addresses What s an IP Address IP stands for Internet Protocol Every device on an IP based network including PCs print servers and routers requires an IP address to identify its location or address on the network This applies to both the WAN and LAN connections There are two ways of assigning an IP address to your network devices Dynamic IP Addresses
29. ogin with one public IP How do get Half Life Team Fortress to work with the Cable Gateway The default client port for Half Life is 27005 The computers on your LAN need to have clientport 2700x added to the HL shortcut command line the x would be 6 7 8 and on up This lets multiple computers connect to the same server One problem Version 1 0 1 6 won t let multiple computers with the same CD key connect at the same time even if on the same LAN not a problem with 1 0 1 3 As far as hosting games the HL server does not need to be in the DMZ Just forward port 27015 to the local IP address of the server computer The web page hangs downloads are corrupt or nothing but junk characters are being displayed on the screen What do need to do Force your Ethernet adapter to 10Mbps or half duplex mode and turn off the Auto negotiate feature of your Ethernet adapter as a temporary measure Please look at the Network Control Panel in your Ethernet adapter s Advanced Properties tab Make sure that your proxy setting is disabled in the browser Check http www homenetworking comcast net for more information If all else fails in the installation what can do Reset the Cable Gateway by holding down the reset button for one second With which type of firewall is the Cable Gateway equipped The Cable Gateway uses NAT and TCP IP port inspections It also has SPI Stateful Packet Inspection am not able to access the Ca
30. or Windows XP 1 Start up your PC Windows will notify you that it has detected new hard ware Insert the Setup CD into the CD ROM drive Found New Hardware USB Cable Modem Figure 3 16 2 When the Found New Hardware Wizard screen appears to confirm that the USB Modem has been identified by your PC make sure that the Setup CD is in the CD ROM drive and click Next Found Mew Hartheare Wisurc Welcome to ihe Found Hew Hardware Wizard The vrar haie you raal oihana Ira USE Cobh Menta Il wie fede rama wath an eee 15 el TEA one Clery diek nemi E rne Te cho ice r Fc ced a ch De reel ha ribana rentre eee oneal bone a latent specie loco Ehi Cit Hesi k cone ner us Figure 3 17 20 3 Windows will now search for the driver software Click the Next button Found Hes Hat there fier el sce sl els the wrieni LAmIC USE a LEA ishim H ribera Figure 3 18 4 When Windows has completed installing the driver click Finish Found Hes Hartheane W irar Completing the Fourd New Hardware Wizard Tha rpari has rachat rear Ha mihana ja HJ Litkays WOO200 CEt Fine bo choo thee rend Figure 3 19 The Windows XP driver installation is complete Return to step 7 of the USB Port Connection section to activate your account and complete the setup process 21 Chapter 4 Configuring the PCs The instructions in this chapter will help you configure each of your comput ers
31. sending or receiv ing data over that port If the LED lights up red there is a collision Green or red The LED is solid green when a PC is connected to the Cable Gateway via USB and drivers are installed If the LED flashes red the cable is con nected but the driver isn t loaded Green or red The LED flashes green during wireless activity If the LED flashes red there is an error con dition Proceed to Chapter 3 Connecting the Cable Gateway Gateway Overview O O O OOOO O With the Cable Gateway you can use a standard Ethernet connection or con nect via USB To connect via an Ethernet connection continue with the Ethernet Cable Connection section To connect via a USB connection go to the next section USB Cable Connection Ethernet Port Connection First make sure that all the devices that you ll be working with are powered down including your PCs and the Cable Gateway Figure 3 1 1 Connect the coaxial cable that is provided by Comcast to the Cable port that is on the back of the Cable Gateway as shown in Figure 3 1 es E 2 Connect one end of TE an Ethernet cable to Figure 3 2 your PC s Ethernet adapter as shown in Figure 3 2 Note If your PC s Ethernet adapter is not set up please refer to your Ethernet adapter s user guide for more information 3 Connect the other end of the cable to one of the LAN ports on the back of the Cable Gateway as shown in Figure 3
32. stallation is complete Return to step 7 of the USB Port Connection section to activate your account and com plete the setup process 16 Installing the USB Driver for Windows 2000 1 Start up your PC Windows will notify you that it has detected new hard ware Insert the Setup CD into the CD ROM drive Found New Hardware aa USB Cable Modem Figure 3 10 2 When the Found New Hardware Wizard screen appears to confirm that the USB Modem has been identified by your PC make sure the Setup CD is in the CD ROM drive and click Next El CEE rn RER EL 3 7 ET Found Hea Hardeare Wizard EEE ni Welcome to the Pound New Hardware Wizard This ward helps pou metal device dawet for heere chaises To conina click Het Cond Figure 3 11 17 3 Select Search for a suitable driver for my device and click the Next but ton Found Mew Horde adre m intial Hardware Dewee Uwer 5 A dae deN g sown praan ha enables a hadse daare bo ek uah 4 ST SET saben TE ee ee MES MEN M ENT a Tr wil complies Ihe resis Laon ia ar devine a LISE Cable Modem tee A device driver is a solives pogar re thak makas s hardware device work Windows r La oeil dc rine oa Tokas chives Birt are coreplay he RS RE ia TPE TA bs Eada ee he rey thereto masavneerala Dior othe non divers foe Iie device et can choose specie Figure 3 12 4 Windows will now search for the driver software Select only CD
33. tandard for the Internet and has become the global standard for commu nications IPX a NetWare communications protocol used only to route mes sages from one node to another and AppleTalk a communications protocol used on Apple and Macintosh networks can be used for LAN to LAN con nections but those protocols cannot connect from WAN to LAN 29 30 What is Network Address Translation and what is it used for Network Address Translation NAT translates multiple IP addresses on the private LAN to one public address that is sent out to the Internet This adds a level of security since the address of a PC connected to the private LAN is never transmitted on the Internet Furthermore NAT allows the Cable Gateway to be used with low cost Internet accounts when only one TCP IP address is provided by the ISP The user may have many private addresses behind this single address provided by the ISP Does the Cable Gateway support ICQ send file Yes with the following fix click ICQ menu gt preference gt connections tab gt and check I am behind a firewall or proxy Then set the firewall time out to 80 seconds in the firewall setting The Internet user can then send a file to a user behind the Cable Gateway Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP address It depends on which network game or what kind of game server you are using For example Unreal Tournament supports multi l
34. that is on the back of the Cable Gateway as shown in Figure 3 4 Connect one end of a USB cable to your PC s USB port and connect the other end of the USB cable to the USB port on the back of the Cable Gateway as shown in Figure 3 4 ee shown in Figure 3 5 Plug the other end of the power adapter into the electrical outlet preferably a surge pro tector Figure 3 5 During the boot up process your computer should recognize the device and ask for driver installation Next you will need to install the USB Driver Continue to the USB Driver section for your PC s operating system Make sure to return to step 7 in this section after you install the driver Contact Comcast to activate your account They will need what is called a MAC Address for the cable modem capability of your Cable Gateway in order to set up your account The 12 digit MAC address is printed on a bar code label on the bottom of the Cable Gateway Once you have given them this number Comcast should be able to activate your account A Important Make sure to contact Comcast with your _ MAC Address to activate your account Go to Chapter 4 Configuring the PCs 11 Installing the USB Driver for Windows 98 1 When the Add New Hardware Wizard window appears insert the Setup CD into your CD ROM drive and click Next Add Hes Hardware Wizard The amont scanches for re dira USS Composites Devra devise cives is a allera
35. to be considered by the buffer designer Like a cache a buffer is a midpoint holding place but exists not so much to accelerate the speed of an activity as to sup port the coordination of separate activities Cable Modem A device that connects a computer to the cable television net work which in turn connects to the Internet Once connected cable modem users have a continuous connection to the Internet Cable modems feature asymmetric transfer rates around 36 Mbps downstream from the Internet to the computer and from 200 Kbps to 2 Mbps upstream from the computer to the Internet Category 5 ANSI EIA American National Standards Institute Electronic Industries Association Standard 568 is one of several standards that specify categories the singular is commonly referred to as CAT of twisted pair cabling systems wires junctions and connectors in terms of the data rates that they can sustain CAT 5 cable has a maximum throughput of 100 Mbps and is usually utilized for 100BaseTX networks Default Gateway The routing device used to forward all traffic that is not addressed to a station within the local subnet DHCP Dynamic Host Configuration Protocol A protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol IP addresses in an organization s network Using the Internet s set of protocol TCP IP each machine that can connect to the Internet needs a unique IP address
36. trol Panel From there double click the Network and Dial up Connections icon Select the Local Area Connection icon for the applicable Ethernet adapter usually it is the first Local Area Connection listed Do not choose a TCP IP entry whose name mentions DUN PPPoE VPN or AOL Double click the Local Area Connection The Local Area ee ane Connection Loce res Lonnection Status ll Status screen will appear as shown in Figure 4 3 Click the See etter ais Properties but Case o Ed EES ton Speed ag 100 0 Mbps Achy ar a or seem re des Sent BB Heerd CDS FOOT LE erie ee LEE EE Packets 0 ANE PAB ZT Figure 4 3 Properties button Local Aree Connection ropte Cierra y PE Ce LENINA E Era a RU RS 2 Coque atest swirls chock dy tha tirnadi may ill Ac bend Foi Mi CETTE mr Bedua pie e a 1 Pie and Printe Sharing for Microsoft Mathworks Y riere Pinion EPAF Li 4 Description FENTE Da Transmision Tei Protocotfintranel e The delak Gr ar a Ko aR ennon Ta tt Sho cents when conneries Figure 4 4 Select Obtain an IP address automatically as shown in Figure 4 5 Once the new window appears click the OK button Click the OK button again to complete the PC configuration internet Probrernl TORS eo Beet es Greed You ca ur LEE Sri hie ch TEn Tea eee in hauler rangi pou raai in atk ee ar ie En CUS even bon tem j Ua the folowing DNS serv
37. tup section TX Rate Transmission Rate Upload To transmit a file over a network In a communications session upload means transmit download means receive URL Uniform Resource Locator The address that defines the route to a file on the Web or any other Internet facility URLs are typed into the browser to access Web pages and URLs are embedded within the pages themselves to pro vide the hypertext links to other pages USB Universal Serial Bus A plug and play interface between a comput er and peripherals such as digital cameras scanners game controllers speak ers keyboards portable data storage or printers With USB you can add a new peripheral to your computer without having to add an adapter card or powering down the computer USB also supports hot swapping the addition or removal of devices while the computer is running USB 1 1 compliant devices support data rates of 1 5Mbps low speed and up to 12Mbps full speed USB 2 0 compliant devices are backward compatible with earlier USB devices and they support data rates of 1 5Mbps low speed 12Mbps full speed and up to 480Mbps high speed UTP Unshielded twisted pair is the most common kind of copper telephone wiring Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company To reduce crosstalk or electro magnetic induction between pairs of wires two insulated copper wires are twisted around each
38. ud you like to da diomeli saach lor a baar dirva Pacman a Te Spey the locatio alte ives Advanced zi Figure 3 7 3 Windows will begin installing the driver for the modem At this point the installation may require files from your Windows Millennium CD ROM If prompted insert your Windows Millennium CD ROM into your CD ROM drive and enter d win9x in the box that appears where d is the letter of your CD ROM drive If you were not supplied with a Windows CD ROM your Windows files may have been placed on your hard drive by your com puter manufacturer While the location of these files may vary 15 many manufacturers use c windows options install as the path Try entering this path into the box If no files are found check your comput er s documentation or contact your computer manufacturer for more infor mation 4 When Windows finishes installing the driver click Finish Add Hew Hardware Wizard EH Linksys WOG200 Windows hes brished mslalre the new harderere dence Figure 3 8 5 When asked if you want to restart your PC remove all diskettes and CD ROMs from the PC and click Yes If Windows does not ask you to restart your PC click the Start button choose Shut Down choose Restart then click Yes Costem Seltmags Change ch lt To hnish sethin g up your new hardware you mast restait your Figure 3 9 The Windows Millennium driver in
39. up on the client side Run winipcefg by clicking on the Start button selecting Run and typing winipcfg in the Run field Press Enter The PC should have an IP address of 192 168 0 xxx xxx is from 2 to 254 The Subnet Mask is 255 255 255 0 the default gateway IP should be the Cable Gateway s IP Address and check that the DNS is correct e Check the same setup values on the Comcast Cable Gateway s Summary Network page on the web based user interface 5 When I enter a URL or IP address get a time out error e Check to see if your other PCs work If they do verify that your PC s IP settings are correct IP address Subnet Mask Default Gateway and DNS e If the PCs are configured correctly but still not working check the Cable Gateway Make sure that it is connected and ON Connect to it and check its settings If you cannot connect to it check the LAN and power con nections e If the Cable Gateway is configured correctly check your Internet connec tion to see that it is working correctly e Manually configure the TCP IP with a DNS address provided by Comcast Frequently Asked Questions What is the maximum number of IP addresses that the Cable Gateway will sup port Comcast Home Networking supports up to five IP addresses Does the Cable Gateway support IPSec Pass Through Yes it is a feature built into the Cable Gateway Does the Cable Gateway support IPX or AppleTalk No TCP IP is the only proto col s
40. y in each of the packets 1f more than one is required and sends it to the IP address that is obtained by looking up the domain name in the Uniform Resource Locator you requested or in the e mail address you re sending a note to At the other end the recipient can see the IP address of the Web page requestor or the e mail sender and can respond by sending another message using the IP address it received 35 36 ISP Internet Service Provider A company that provides individuals and companies access to the Internet and other related services such as Web site building and virtual hosting LAN local area network A group of computers and associated devices that share a common communications line and typically share the resources of a single processor or server within a small geographic area for example within an office building Mbps Megabits per second One million bits per second unit of measure ment for data transmission Network A system that transmits any combination of voice video and or data between users NIC Network Interface Card A board installed in a computer system usu ally a PC to provide network communication capabilities to and from that com puter system Also called an adapter Notebook PC A notebook computer is a battery powered personal comput er generally smaller than a briefcase that can easily be transported and conve niently used in temporary spaces such as on airplanes in libraries t
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