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Wir eless Cable Gateway User’ s Guide PC Link Internet On/Off ONLINE US Power Eth4. WLAN/USB DS Eth2. Eth1. Eth3. DCW725 book file.indb 1 DCW725 book file.indb 1 10/6/04 11:17:08 AM 10/6/04 11:17:08 AM[...]

CAUTION Disconnect power befor e servicing. CAUTION To en sur e reliable oper ation and to prevent overheating, pr ovide adequate ventilation for this modem and keep it away fr om heat sources . Do not locate near heat r egister s or other heat- producing equipment. Pr ovide for fr ee air fl ow around the cable modem and its power supply . CABLE I[...]

T able of Contents 1 Chapter 1: Connections and Setup Introduction .................................................................................... 4 Wireless Cable Gateway Features .......................................................................... 4 What’ s on the CD-ROM ...............................................................[...]

T able of Contents 2 Chapter 3: Ad vanced Con fi g u ra tion Advanced User Con fi g u ra tion ......................................................29 Status W eb P age Group ...............................................................30 Software W eb P age .......................................................................................[...]

T able of Contents 3 Wireless W eb P ages Group .......................................................... 46 P erformance ................................................................................................................ 46 Authentication ................................................................................................[...]

Chapter 1: Connections and Setup Illustr ations contained in this document are for r epresentation only . 4 Chapter 1 Introduction Wireless Cable Gateway Features Thank you for pur chasing the DCW725 Wireless Cable Gateway . This device delivers the highest performance in data over cable technology . Ideal for home and small business users, this ea[...]

Chapter 1 5 Chapter 1: Connections and Setup What’ s on the CD-ROM If you connect a PC using the USB port on your gateway , you’ll need the USB drivers found on the CD-ROM. CD-ROM Contents: • Electr onic copy of this user’s guide (.pdf format) • Adobe Acr obat Reader — application you can load to read .pdf format, if you don’t have it[...]

6 Chapter 1 Chapter 1: Connections and Setup Computer Requirements • USB 1.0 or 1.1 (PC only), Ethernet (1 0/1 00), 80 2.1 1b or g • A T CP/IP network protocol for each machine • A network cable with RJ-45 connector for Ethernet connection • Micr osoft Internet Explorer 4.0 or later , or Netscape Navigator 4.0 or later . (5.0 and 4.7 or lat[...]

Chapter 1 7 Chapter 1: Connections and Setup • The Internet Service Pr ovider (ISP): Y our cable company provides you access to an Internet Service Pr ovider (ISP). The ISP is your gateway to the Internet. It provides you with a pipeline to access Internet content on the W orld Wide Web (WWW). Check with your cable company to make sur e you have [...]

8 Chapter 1 Chapter 1: Connections and Setup System Overview The Wir eless Cable Gateway is connected between your cable company and the PCs within your home, as pictur ed previously in the Wir eless Cable Gateway Overview . The connection to the cable company is made by a coaxial cable, and is r eferred to as the W AN (Wide Area Network) side of y[...]

Chapter 1 9 Chapter 1: Connections and Setup Y our PC: Installing a PC Network Card If your PC does not alr eady support Ethernet or USB, you must install a network interface card. Following is an example setup pr ocedure: 1. Install an Ethernet car d on your motherboard, following the car d’s dir ections. 2. P ower up your PC and follow the Add [...]

1 0 Chapter 1 Chapter 1: Connections and Setup Y our PC: Installing a T CP/IP Stack Follow these instructions to install the T CP/IP protocol stack on one of your PCs only after a network car d has been successfully installed inside the PC. These instructions are for Windows Me. For T CP/IP setup under Windows NT , 2000, and XP , refer to your Wind[...]

Chapter 1 1 1 Chapter 1: Connections and Setup 7. After a few seconds, the main Network window will appear . The T CP/IP Protocol should now be listed. 8. Click the OK button again. Windows may ask you for the original Windows installation disk or additional fi les. Supply them by pointing to the corr ect fi le location, e.g., D:win9x, c:window[...]

12 Chapter 1 Chapter 1: Connections and Setup Y our PC: Confi guring DHCP on a TCP/IP Stack on a PC These instructions will help you confi gure each of your computer s to be able to communicate with the gateway to obtain an IP (or T CP/IP) address automatically (called DHCP , Dynamic Host Confi guration Protocol). Find out which oper ating syste[...]

Chapter 1 13 Chapter 1: Connections and Setup Fig. 7 Fig. 6 Confi guring Windows Me PCs 1. Go to the Network scr een by clicking the Start button. Click Setting s and then Control P anel . Fr om there, double-click the Network icon. 2. On the Confi guration tab , select the T CP/IP line for the applicable Ethernet adapter . Do not choose a TCP/IP[...]

14 Chapter 1 Chapter 1: Connections and Setup Confi guring Windows 2000 PCs 1. Go to the Network scr een by clicking the Start button. Click Settings and then Contr ol P anel . Fr om there, double-click the Network and Dial-up Connection s icon. 2. Select the Local Ar ea Connection icon for the applicable Ethernet adapter (it’s usually the fi r[...]

Chapter 1 15 Chapter 1: Connections and Setup Connecting Y our Devices 1. Befor e you begin, make sure that all of your har dware is power ed off, including the gateway , PCs, hubs, and switches. 2. Connect one end of an Ethernet cable to one of the LAN ports (labeled 1, 2, 3, or 4) on the back of the gateway and the other end to a standar d port o[...]

16 Chapter 1 Chapter 1: Connections and Setup Fig. 9 Fig. 8 When the Online LED is lit solid, all gateway initialization and startup steps have been completed successfully , and the gateway should be capable of providing connectivity between your PCs on the gateway LAN-side and your cable oper ator on the gateway W AN-side. Mandatory User Confi gu[...]

Chapter 1 17 Chapter 1: Connections and Setup Fig. 10 3. This step is not r equired with most installations. However , based on setup instructions from your cable company , you may need to enter the following information. To enter it, navigate to the Network – W AN gateway web page by clicking Network at the top of the page, then click WA N (on t[...]

18 Chapter 1 Chapter 1: Connections and Setup Some examples of Internet-sharing softwar e are Internet LanBridge, Wingate, ICS, and Sygate. T o disable your Internet-sharing softwar e: • If you ar e running Netscape Navigator: Click Edit >> Prefer ence >> Advanced >> Proxies >, and click Dir ect Connection to the Internet. ?[...]

Chapter 2: Networking Chapter 2 19 Illustr ations contained in this document are for r epresentation only . Communications Data communication involves the fl ow of packets of data from one device to another . These devices include per sonal computers, Ethernet and USB hubs, cable modems, digital r outers and switches, and highly integr ated device[...]

Chapter 2: Networking 20 Chapter 2 Example: The Wir eless Cable Gateway offers a number of built-in web pages which you can use to confi gure its networking side; when you communicate with the networking side, your communication is following this path. Each packet on the Internet addr essed to a PC in your home travels fr om the Internet down- str[...]

Chapter 2: Networking Chapter 2 2 1 addr ess by various means, including a DHCP server , by you directly entering it, or sometimes by a PC gener ating one of its own. Ethernet r equires that each T CP/IP stack on the Wireless Cable Gateway also have associated with it an Ethernet MAC (Media Access Contr ol) address . MAC addr esses are permanently [...]

Chapter 2: Networking 22 Chapter 2 CM/Networking IP Stack 1 111.111.1.11 IP Stack 2 192.168.100.1 WAN LAN Cable Modem (CM) Mode RJ 45 USB Cable Wireless Wireless Cable Gateway CM Mode Wireless Cable Gateway behaves as a bridge CPE 1 111.111.2.11 CPE 2 111.111.2.12 CPE 3 111.111.2.13 111.111.1.11 Internet Cable Operator WAN LAN Fig. 12 Fig. 13 DCW72[...]

Chapter 2: Networking Chapter 2 23 CM (Cable Modem) Mode pr ovides basic home networking. In this mode, two IP stacks are active: • IP Stack 1 - for use by the cable company to communicate with the cable modem section only . This stack receives its IP addr ess from the cable company during CM initialization. It uses the MAC addr ess printed on th[...]

Chapter 2: Networking 24 Chapter 2 CM Networking IP Stack 1 111.111.1.11 IP Stack 3 111.111.2.11 IP Stack 5 192.168.0.1 WAN LAN RJ 45 USB Cable 3360 Wireless Cable Gateway RG & CH Modes Wireless Cable Gateway behaves as a gateway CPE 1 192.168.0.2 CPE 2 192.168.0.3 CPE 3 192.168.0.4 Internet Cable Operator 111.111.1.11 Wireless WAN LAN Res iden[...]

Chapter 2: Networking Chapter 2 25 RG (Residential Gateway) Mode pr ovides basic home networking plus NAT (Network Addr ess T ranslation). In this mode, thr ee IP stacks are active: • IP Stack 1 - for use by the cable company to communicate with the Cable Modem section only . This stack receives its IP addr ess from the cable company during CM in[...]

Chapter 2: Networking 26 Chapter 2 CM Networking IP Stack 1 111.111.1.11 IP Stack 3 111.111.2.11 IP Stack 5 192.168.0.1 IP Stack 4 111.111.2.12 WAN LAN Fig. 16 CableHome (CH) Mode CH (CableHome) Mode pr ovides all the functionality of RG mode and adds the ability of the cable company to contr ol the home networking confi gur ation of your Wireless[...]

Chapter 2: Networking Chapter 2 27 • IP Stack 4 - for use by you to r emotely (i.e. from somewher e on the WAN side, such as at your r emote workplace) communicate with the Cable Modem and Networking sections, to remotely access the internal web page diagnostics and confi guration. This stack is also used by your cable company to deliver packets[...]

Chapter 2: Networking 28 Chapter 2 MAC and IP Addresses Summary This table summarizes all the MAC and IP addr esses that may be associated with the TCP/IP communication stacks and USB handling in your Wir eless Cable Gateway . The ones actually used depend upon your gateway Oper ating Mode, as explained above. At minimum, your cable company will ne[...]

Chapter 3: Advanced Confi gur ation Chapter 3 29 Illustr ations contained in this document are for r epresentation only . Advanced User Confi guration The Wir eless Cable Gateway offers local management capability thr ough a built in HTTP server and a number of diagnostic and confi guration web pages. These pages ar e available from http://192.1[...]

Chapter 3: Advanced Confi gur ation 30 Chapter 3 Status W eb P age Group Software W eb P age (Fig. 17) The Information section of this page pr ovides hardwar e and software information about your gateway that may be useful to your cable company . Y ou can view your operating softwar e version but not change it. This is because your gateway adher e[...]

Chapter 3: Advanced Confi gur ation Chapter 3 3 1 Connection W eb P age (Fig. 18) This page r eports diagnostic information about the initialization and operating status of your gateway that can be useful at the time of installation. It can also be useful to your cable company’ s support technician if you’re having pr oblems. Fig. 18 DCW725 bo[...]

Chapter 3: Advanced Confi gur ation 32 Chapter 3 P assword W eb P age (Fig. 19) This page is used to set a passwor d that enables you to access all the gateway internal web pages. The passwor d can be a maximum of 8 character s and is case sensitive. In addition, this page can be used to r estore the gateway to its original factory settings. Use t[...]

Chapter 3: Advanced Confi gur ation Chapter 3 33 Event Log W eb P age (Fig. 20) This page pr ovides diagnostic information regar ding the cable modem section of your gateway that may be useful to your cable company if you ar e having startup or operation issues. As long as your gateway startup and oper ational performance is normal, any messages c[...]

Chapter 3: Advanced Confi gur ation 34 Chapter 3 Network W eb P age Group W AN Web P age (Fig. 22) This page gives you the ability to enter some data your cable company may r equire, as explained befor e in Mandatory User Confi gur ation. In addition, it enables you to view your WAN side IP addr ess and lease information. Y our gateway can pr ovi[...]

Chapter 3: Advanced Confi gur ation Chapter 3 35 LAN and Computers W eb P ages (Fig. 23 and 24) These pages give you the ability to activate and deactivate the DHCP server function of your gateway , and, if the DHCP server is activated, to see DHCP leases it has provided. With this function activated, your cable company’ s DHCP server provides o[...]

Chapter 3: Advanced Confi gur ation 36 Chapter 3 Advanced W eb P age Group Options W eb P age (Fig. 25) This page allows you to enable/disable some featur es of the Wireless Cable Gateway . Check WA N Blocking and then click Apply to pr event others on the W AN side from being able to ping your gateway . With WAN Blocking on, your gateway will not[...]

Chapter 3: Advanced Confi gur ation Chapter 3 37 Check Multicast Enable and then click Apply to enable multicast tr affi c to pass W AN <=> LAN. Y ou may need to enable this to see some types of br oadcast streaming and content on the Internet, such as webcasting of a popular live event. IP Filtering W eb P age (Fig. 26) This page enables y[...]

Chapter 3: Advanced Confi gur ation 38 Chapter 3 Fig. 28 P ort Filtering W eb P age (Fig. 28) This page enables you to enter r anges of destination ports (applications) that you don’t want your LAN PCs to send packets to. Any packets your LAN PCs send to these destination ports will be blocked. For example, you could block access to worldwide we[...]

Chapter 3: Advanced Confi gur ation Chapter 3 39 Forwarding W eb P age (Fig. 29) For LAN <=> W AN communications, the gateway normally only allows you to originate an IP connection with a PC on the W AN; it will ignore attempts of the W AN PC to originate a connection onto your PC. This pr otects you from malicious attacks fr om outsiders. H[...]

Chapter 3: Advanced Confi gur ation 40 Chapter 3 Fig. 30 P ort T riggers W eb P age (Fig. 30) Some Internet activities, such as inter active gaming, requir e that a PC on the WAN side of your gateway be able to originate connections during the game with your game playing PC on the LAN side. Y ou could use the Advanced...Forwar ding page to constru[...]

Chapter 3: Advanced Confi gur ation Chapter 3 4 1 DMZ Host W eb P age (Fig. 3 1) Use this page to designate one PC on your LAN that should be left accessible to all PCs fr om the W AN side, for all ports. For example, if you put an HTTP server on this machine, anyone will be able to access that HTTP server by using your gateway IP addr ess as the [...]

Chapter 3: Advanced Confi gur ation 42 Chapter 3 Routing Information Protocol Setup W eb P age (Fig. 32) This featur e enables the gateway to be used in small business situations where mor e than one LAN (local ar ea network) is installed. The RIP protocol pr ovides the gateway a means to "advertise" available IP r outes to these LANs to[...]

Chapter 3: Advanced Confi gur ation Chapter 3 43 Firewall W eb P ages Group W eb Content Filter and P arental Control W eb P ages (Fig. 33 and 34) These pages allow you to enable, disable, and confi gure a variety of fi rewall featur es associated with web br owsing, which uses the HTTP protocol and tr ansports HTML web pages. On these pages, yo[...]

Chapter 3: Advanced Confi gur ation 44 Chapter 3 Time of Day Access Filter W eb P age (Fig. 35) Use this page to set rules that will block specifi c LAN side PCs from accessing the Internet, but only at specifi c days and times. Specify a PC by its hardwar e MAC address, then use the tools to specify blocking time. Finally , click the Apply butt[...]

Chapter 3: Advanced Confi gur ation Chapter 3 45 Local Log and Remote Log W eb P ages (Fig. 36 and 37) The gateway builds a log of fi rewall blocking actions that the Fir ewall has taken. Using the Local Log page lets you specify an email addr ess to which you want the gateway to email this log. Y ou must also tell the gateway your outgoing (i.e.[...]

Chapter 3: Advanced Confi gur ation 46 Chapter 3 Wireless W eb P ages Group Important: Changes to the wireless web pages should be made fr om a PC that is hard wir ed to the gateway . The Wir eless web pages group enables a variety of settings that can pr ovide secure and r eliable wir eless communications for even the most demanding tech-savvy us[...]

Chapter 3: Advanced Confi gur ation Chapter 3 47 Fig. 38 Privacy Privacy secur es or scrambles messages tr aveling through the air between your wir eless PCs and the gateway , so they can't be observed by others. The following minimum privacy-r elated setting changes to factory defaults ar e recommended. See the 80 2.1 1b/g Privacy Web P age [...]

Chapter 3: Advanced Confi gur ation 48 Chapter 3 Sets the Network Name (also known as SSID) of this network. Selecting Closed hides the network fr om active scans. Selecting Open r eveals the network to active scans. Selects a particular channel on which to oper ate. Enables or disables the wir eless interface. Up to 32-char acter string containin[...]

Chapter 3: Advanced Confi gur ation Chapter 3 49 80 2.1 1b/g Privacy W eb P age (Fig. 39) The Privacy featur e in the wireless section encrypts, i.e. effectively “scr ambles,” all radio communication between your gateway and r emote wireless-connected PCs. This pr ovides Wired- Equivalent Privacy (WEP) on your wir eless LAN. Use this page to a[...]

Chapter 3: Advanced Confi gur ation 50 Chapter 3 Setting Description Value List or Range Default Sets the network authentication method. 802.1X and WP A requir e that valid RADIUS parameter s be set. WPA-PSK r equires a valid WPA Pr e-Shared K ey to be set. Sets the WPA Pr e-Shared K ey (PSK). Sets the WPA Gr oup Rekey Interval in seconds. Set to [...]

Chapter 3: Advanced Confi gur ation Chapter 3 5 1 Table 3. P arameter Value Li st/Range Dependencies on Network Authentication Setting Network Authentication Dis abled 802.1x WPA WPA-PSK Disabled (grayed out) Disabled (grayed out) Disabled (grayed out) Disabled (grayed out) Disabled (grayed out) Off, WEP (64-bit), WEP (128-bit) Optional, Required [...]

Chapter 3: Advanced Confi gur ation 52 Chapter 3 Data Encryption Off WEP (64-bit), WEP (128-bit) Setting Disabled (gr ayed out) Disabled (gr ayed out) Disabled (gr ayed out) Up to 32 char acter string containing ASCII char acters with codes between 0x20 and 0x7e 5 or 13 ASCII char acters or 1 0 or 26 hexadecimal digits 1 to 4 P assPhr ase Network [...]

Chapter 3: Advanced Confi gur ation Chapter 3 53 Fig. 40 This page enables some advanced 80 2.1 1b settings to be made. The factory default values should pr ovide good results in most cases. W e don’t recommend you change these settings unless you have technical knowledge of 80 2.1 1b wir eless technology . For expert user s, details of all sett[...]

Chapter 3: Advanced Confi gur ation 54 Chapter 3 Table 5. Advanced Setting s Defi nitions Setting Description V alue List or Range Default Sets the network mode. Max compatibility interoper ates with the widest variety of 54g and 802.1 1b clients. 54g only accepts 54g clients. Max performance provides the highest throughout and accepts only 54g c[...]

Chapter 3: Advanced Confi gur ation Chapter 3 55 80 2.1 1b/g Access Control W eb P age (Fig. 4 1) The access contr ol feature enables you to r estrict wireless access to specifi c computer s. Use this featur e to prevent outsider wir eless PCs from connecting to your private network. Y our Gateway identifi es wireless PCs by their WiFi MAC Addr [...]

Chapter 3: Advanced Confi gur ation 56 Chapter 3 Determining WiFi MAC Address (Fig. 42) If a printed WiFi MAC addr ess for a PC cannot be found, it can be determined as follows from the MS-DOS pr ompt in the MS Windows running on that computer: 1. Start MS-DOS. In Windows 98, this is “Start” ... “Run” ,,, [type in] “ command” ... “OK[...]

Chapter 3: Advanced Confi gur ation Chapter 3 57 Table 6. Access Contr ol Setting s Defi nitions Setting Description V alue List or Range Default Selects whether clients with the specifi ed MAC address ar e allowed or denied wir eless access. Allows or denies wir eless access to clients with the specifi ed MAC ad- dr esses. Accepted input MAC a[...]

Chapter 3: Advanced Confi gur ation 58 Chapter 3 Bridging W eb P age (Fig. 43) The Bridging page pr ovides a location where settings can be adjusted r elated to the wireless WDS (Wir eless Distribution System) feature. The wir eless gateway can be placed in a mode that allows the gateway to communicate with other “ extender” wireless access po[...]

Chapter 4: Additional Information Chapter 4 59 Illustr ations contained in this document are for r epresentation only . T roubleshooting Y ou can corr ect most problems you have with your pr oduct by consulting the troubleshooting list that follows. If you need service, please contact your service pr ovider . Unit won’t turn on • Make sur e the[...]

Chapter 4: Additional Information 60 Chapter 4 PC Link Internet On/Off ONLINE US Power Eth4. WLAN/USB DS Eth2. Eth1. Eth3. Front of the Unit (from left to right) 1. The LAN indicators Eth1 – Eth4 Indicates when an Ethernet interface is active. WLAN/USB Indicates when either the wireless or USB interface is active. 2. P ower Indicates when the uni[...]

Chapter 4: Additional Information Chapter 4 6 1 9-12VDC E t he r ne t USB RESET Cable Back of the Unit Description of Jacks and Switches (from left to right) 1. Antenna jack Connects to the 80 2.1 1b/g wireless antenna included with the gateway . 2. P ower jack Connects to the AC power supply; r equires 9-12 V AC. Important: Use only the power supp[...]

Chapter 4: Additional Information 62 Chapter 4 Detailed Explanation of Jacks The Wir eless Cable Gateway provides the following data connections: WAN Side: Cable TV connection- connects to your cable service LAN Side: Ethernet RJ-45 jacks — connect up to four 1 0 or 1 00 Mbps Ethernet cables to PCs or to Ethernet switches to connect mor e PCs. Ea[...]

Chapter 4: Additional Information Chapter 4 63 Care and Cleaning CAUTION: Unplug your unit befor e cleaning. Y ou can clean the unit as r equired, using a soft lint-fr ee cloth. Be sure to occasionally dust the ventilation slots in the cabinet to help assur e adequate ventilation. Never use str ong cleaning agents, such as ammonia-based cleaners, o[...]

Chapter 4: Additional Information 64 Chapter 4 FCC Declaration of Conformity and Industry Canada Information This device complies with P art 15 of the FCC Rules. Oper ation is subject to the following two conditions: (1) this device may not cause harmful interfer ence, and (2) this device must accept any interfer ence received, including interfer e[...]

Chapter 4: Additional Information Chapter 4 65 Product Specifi cations W AN Cable Interface F type female 75 ohm LAN 4 1 0/1 00 BASE-T 1 USB, 1.1 Connector Type B, 1 IEEE 80 2.1 1b/g (2.4 GHz Unlicensed ISM r adio band) System P ower 9-12V / 1A EMI/EMC FCC Class B, CE Class B, VCCI Class B . Oper ation Requirement Oper ating Temp. 0ºC to 40ºC (3[...]

Chapter 4: Additional Information 66 Chapter 4 Wireless Interface • 1 1 Mbps IEEE 802.1 1b and 54 Mbps 802.1 1g Wireless LAN • Fr equency band: 2400-2497 MHz • Supports 64/128 bit RC4 authentication and encryption • Auto fallback to lower data r ates as wireless gateway <=> PC distance incr eases • Communicates with all Wi-Fi certi?[...]

Chapter 4: Additional Information Chapter 4 67 • Stateful P acket Inspection to pr otect against both Denial of Service and Distributed Denial of Service attacks, including: • Reassembly attacks • SYN Attack (SYN Flood) • ICMP Flood • Ping of Death Attack • Tear Dr op Attack • IP Spoofi ng Attack • LAND Attack • Jolt • Winnuke [...]

Chapter 4: Additional Information 68 Chapter 4 • FTP • IRC • H.323 • Quake • Blizzar d games • Chat ALG • Real Audio/Video • CUSEEME • Netmeeting • MS Games (excluding game zone) • DIABOLO II • Activision Games • PCAnywher e • SSL • NNTP Virtual Private Network (VPN) Feature • PPTP and IPSec pass-thr ough can be enab[...]

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Thomson Inc. 10330 North Meridian Street Indianapolis, IN 46290 © 2004 Thomson Inc. T rademark(s) Registered Marca(s) Registrada(s) Printed in China TOCOM 1644144A THOMSON Please do not send any products to the Indianapolis address listed in this manual or on the carton. This will only add delays in service for your product. DCW725 book file.indb [...]