NETGEAR DG632 - ADSL Modem Router Reference Manual Download Page 119

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Reference Manual for the Model DG632 ADSL Modem Router

Preparing Your Network

C-13

DHCP Configuration of TCP/IP in Windows NT4

Once you have installed the network card, you need to configure the TCP/IP environment for
Windows NT 4.0. Follow this procedure to configure TCP/IP with DHCP in Windows NT 4.0.

• Choose

Settings

from the Start Menu, and then select

Control Panel

This will display Control Panel window.

• Double-click the

Network

icon in the

Control Panel window.

The Network panel will display.

• Select the

Protocols

tab to continue.

Summary of Contents for DG632 - ADSL Modem Router

Page 1: ...April 2004 NETGEAR Inc 4500 Great America Parkway Santa Clara CA 95054 USA Phone 1 888 NETGEAR Reference Manual for the Model DG632 ADSL Modem Router...

Page 2: ...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 radi...

Page 3: ...ns 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 rig...

Page 4: ...iv...

Page 5: ...uto Uplink LAN Ethernet Connections 2 3 Easy Installation and Management 2 4 What s in the Box 2 5 The Front Panel 2 6 The Rear Panel 2 7 Chapter 3 Connecting the Modem to the Internet What You Need B...

Page 6: ...lt In Password 4 4 Changing the Administrator Login Timeout 4 4 Backing Up Restoring or Erasing Your Settings 4 5 How to Back Up the Configuration to a File 4 5 How to Restore the Configuration from a...

Page 7: ...Services 6 14 Firewall Rules 6 15 Inbound Rules Port Forwarding 6 16 Inbound Rule Example A Local Public Web Server 6 17 Considerations for Inbound Rules 6 17 Outbound Rules Service Blocking 6 18 Outb...

Page 8: ...7 6 Testing the LAN Path to Your Router 7 6 Testing the Path from Your Computer to a Remote Device 7 7 Restoring the Default Configuration and Password 7 8 Using the Reset button 7 8 Appendix A Techn...

Page 9: ...erties C 6 Configuring Windows NT4 2000 or XP for IP Networking C 7 Installing or Verifying Windows Networking Components C 7 DHCP Configuration of TCP IP in Windows XP 2000 or NT4 C 8 DHCP Configurat...

Page 10: ...x Contents...

Page 11: ...ide uses the following typographical conventions This guide uses the following formats to highlight special messages This manual is written according to these specifications Table 1 Typographical conv...

Page 12: ...buttons Use the toolbar buttons across the top to navigate print pages and more The Show in Contents button locates the current topic in the Contents tab Previous Next buttons display the previous or...

Page 13: ...print The PDF version of the chapter you were viewing opens in a browser window Note Your computer must have the free Adobe Acrobat reader installed in order to view and print PDF files The Acrobat re...

Page 14: ...Reference Manual for the Model DG632 ADSL Modem Router 1 4 About This Manual...

Page 15: ...by a single computer With minimum setup you can install and use the modem within minutes The included firewall and Network Address Translation NAT features protect you from hackers Key Features The DG...

Page 16: ...obtains the actual Internet WAN IP address from the ISP during connection setup and forwards it to the attached computer Router Device Mode In Router Device Mode the DG632 supports configuration of t...

Page 17: ...ly detects and thwarts Denial of Service DoS attacks such as Ping of Death SYN Flood LAND Attack and IP Spoofing Blocks unwanted traffic from the Internet to your LAN Blocks access from your LAN to In...

Page 18: ...intosh or Linux A user friendly Setup Wizard is provided and online help documentation is built into the browser based Web Management Interface Smart Wizard The modem automatically senses the type of...

Page 19: ...Microfilters quantity and type vary by region USB Cable depending on the country of purchase Telephone cable Microfilters quantity and type vary by region ADSL Modem Router Resource CD including This...

Page 20: ...DG632 ADSL Modem Router front panel shown below contains status LEDs Figure 2 2 DG632 Front Panel You can use the LEDs to verify various conditions Table 2 1 lists and describes each LED on the front...

Page 21: ...Ethernet RJ 45 port for connecting to a local computer Factory Default Reset push button AC power adapter outlet USB On Off The Local port has detected link with a device No link is detected on this p...

Page 22: ...Reference Manual for the Model DG632 ADSL Modem Router 2 8 Introduction...

Page 23: ...modem connected to an ADSL line and a computer properly connected to the modem as explained below 2 Active Internet service such as that provided by an ADSL account 3 The Internet Service Provider IS...

Page 24: ...ardware Requirements To use the DG632 modem router on your network each computer must have an installed Ethernet adapter and an Ethernet cable To install and run the DG632 modem router with your compu...

Page 25: ...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 c...

Page 26: ...If you use a login name and password then fill in the following Login Name ______________________________ Password ____________________________ Service Name _____________________________ Fixed or Stat...

Page 27: ...2 Connect the modem to the computers on your network 3 Log in to the modem 4 Connect to the Internet Follow the steps below to connect your modem to your network Before you begin locate the ADSL conf...

Page 28: ...with a separate splitter insert the splitter into the phone outlet connect the one line filter to the splitter and connect the phone to the filter 2 CONNECT THE DG632 TO THE INTERNET Note Improperly c...

Page 29: ...Auto UplinkTM technology The Ethernet port will automatically sense whether the cable plugged into the port should have a normal connection for example connecting to a computer or an uplink connectio...

Page 30: ...ted computer 3 LOG IN TO THE DG632 Note Your computer needs to be configured for DHCP For instructions on configuring for DHCP please see Appendix C in the Reference Manual on the ADSL Modem Router Re...

Page 31: ...cally via DHCP you need the configuration parameters from your ISP you recorded in Record Your Internet Connection Information on page 3 4 Auto Detecting Your Internet Connection Type The Web Configur...

Page 32: ...ng method preset default settings will usually work Only change the multiplexing method if you are sure your ISP requires Virtual Path Identifier VPI or Virtual Channel Identifier VCI settings that ar...

Page 33: ...for PPPoA login accounts Enter your login user name and password These fields are case sensitive Wizard Detected Dynamic IP Account Setup If the Setup Wizard determines that your Internet service acc...

Page 34: ...rnet from any computer connected to your modem launch a browser such as Microsoft Internet Explorer or Netscape Navigator You should see the modem s Internet LED blink indicating communication to the...

Page 35: ...o complete the installation of the USB driver 5 Now connect the USB cable to your modem and plug in the AC power for the modem 6 Use the USB cable to connect your computer to the modem The found new h...

Page 36: ...Reference Manual for the Model DG632 ADSL Modem Router 3 14 Connecting the Modem to the Internet...

Page 37: ...ce Mode to Router Device Mode In Modem Device Mode the modem operates like a DSL modem passing all the Internet communications directly to your computer where you must then configure your settings and...

Page 38: ...ur web browser and click your browser s Stop button 4 In the Address or Location box of your browser type http 192 168 0 1 and click Enter A login window opens as shown in Figure 4 1 below Figure 4 1...

Page 39: ...disconnect When prompted enter admin for the modem User Name and password for the modem Password You can use procedures below to change the modem s password and the amount of time for the administrat...

Page 40: ...re 4 5 Figure 4 5 Set Password menu 3 To change the password first enter the old password and then enter the new password twice 4 Click Apply to save your changes Note After changing the password you...

Page 41: ...erted to factory default settings The procedures below explain how to do these tasks How to Back Up the Configuration to a File 1 Log in to the modem at its default LAN address of http 192 168 0 1 wit...

Page 42: ...esirable to restore the modem to the factory default settings This can be done by using the Erase function 1 To erase the configuration from the Maintenance menu Settings Backup link click the Erase b...

Page 43: ...fault User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the modem 3 From the Main Menu of the browser interface under the Mainten...

Page 44: ...Reference Manual for the Model DG632 ADSL Modem Router 4 8 Maintaining Your DG632 ADSL Modem Router...

Page 45: ...ally configure your modem using the menu above or you can allow the Setup Wizard to determine your configuration as described in the previous section Manually Configuring Basic Settings It is best to...

Page 46: ...r computer in order to access the Internet When you start an Internet application your modem automatically logs you in 2 Choose PPPoE for the encapsulation method your ISP uses 3 Enter the login name...

Page 47: ...ISP assigned 6 The DNS server is used to look up site addresses based on their names Select Get Automatically from ISP if your ISP uses DHCP to assign your IP address Your ISP will automatically assi...

Page 48: ...lick the Test button to test your Internet connection If the NETGEAR Web site does not appear within one minute refer to Chapter 7 Troubleshooting ADSL Settings The default settings of your DG632 ADSL...

Page 49: ...following table Table 5 1 Menu 3 2 Modem Status Fields Field Description Account Name The Host Name assigned to the modem in the Basic Settings menu Firmware Version Displays the modem firmware versio...

Page 50: ...t assign IP addresses to PCs on the LAN If ON the modem will assign IP addresses to PCs on the LAN IP Subnet Mask This field displays the IP Subnet Mask being used by the Local LAN port of the modem T...

Page 51: ...een displays Status The link status of the port TxPkts The number of packets transmitted on this port since reset or manual clear RxPkts The number of packets received on this port since reset or manu...

Page 52: ...Reference Manual for the Model DG632 ADSL Modem Router 5 8 Using Modem Mode...

Page 53: ...se the basic router features of the DG632 ADSL Modem Router Figure 6 1 Router Mode main menu Router Mode Basic Settings You can manually configure your modem using the menu above or you can allow the...

Page 54: ...y Configuring Basic Settings It is best to start the manual configuration from the Setup Wizard 1 Select your country 2 Select No to manually configure your modem connection 3 Click Next 4 Manually co...

Page 55: ...r computer in order to access the Internet When you start an Internet application your modem automatically logs you in 2 Choose PPPoE for the encapsulation method your ISP uses 3 Enter the login name...

Page 56: ...ISP assigned 6 The DNS server is used to look up site addresses based on their names Select Get Automatically from ISP if your ISP uses DHCP to assign your IP address Your ISP will automatically assi...

Page 57: ...lick the Test button to test your Internet connection If the NETGEAR Web site does not appear within one minute refer to Chapter 7 Troubleshooting ADSL Settings The default settings of your DG632 ADSL...

Page 58: ...he following table Table 6 1 Menu 3 2 Modem Status Fields Field Description Account Name The Host Name assigned to the modem in the Basic Settings menu Firmware Version Displays the modem firmware ver...

Page 59: ...t assign IP addresses to PCs on the LAN If ON the modem will assign IP addresses to PCs on the LAN IP Subnet Mask This field displays the IP Subnet Mask being used by the Local LAN port of the modem T...

Page 60: ...reen displays Status The link status of the port TxPkts The number of packets transmitted on this port since reset or manual clear RxPkts The number of packets received on this port since reset or man...

Page 61: ...s Table 6 1 Connection Status Fields for Dynamic IP Field Description IP Address The IP Address assigned to the WAN port by the ADSL Internet Service Provider Subnet Mask Then Network Mask assigned to...

Page 62: ...This screen shows the following statistics Table 6 1 Connection Status Fields for PPPoA Field Description Connection Time The time elapsed since the last connection to the Internet via the ADSL port...

Page 63: ...uter Mode 6 11 Viewing Selecting and Saving Router Mode Logged Information The modem will log security related events such as denied incoming service requests hacker probes and administrator logins He...

Page 64: ...activate this feature enter the IP address of the server where the Syslog file will be written Table 6 1 Security Log entry descriptions Field Description Description or Action The type of event and w...

Page 65: ...host Perform a DNS Lookup to test if an Internet name resolves to an IP address to verify that the DNS server configuration is working Display the Routing Table to identify what other modems the mode...

Page 66: ...fined by the Internet Engineering Task Force IETF and published in RFC1700 Assigned Numbers Service numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of t...

Page 67: ...o WAN determine what outside resources local users can have access to A firewall has two default rules one for inbound traffic and one for outbound The default rules of the DG632 are Inbound Block all...

Page 68: ...r example a Web server or game server visible and available to the Internet The rule tells the modem to direct inbound traffic for a particular service to one local server based on the destination por...

Page 69: ...ervice to be allowed 3 Services From this list select the specific service or application The list already displays many common services but you are not limited to these choices Use the Services menu...

Page 70: ...urce address Type of service being requested service port number Following is an application example of outbound rules Outbound Rule Example Doom If you want to block usage of the game Doom you can cr...

Page 71: ...s programmed to recognize some of these applications and to work properly with them but there are other applications that may not function well In some cases one local computer can run the application...

Page 72: ...Advanced click the WAN Setup link to view the page shown in Figure 6 14 Figure 6 14 WAN Setup Page 3 Click Default DMZ Server 4 Type the IP address for that server 5 Click Apply to save your changes...

Page 73: ...have a specific reason to do so MTU Size The normal MTU Maximum Transmit Unit value for most Ethernet networks is 1500 Bytes or 1492 Bytes for PPPoE connections For some ISPs you may need to reduce t...

Page 74: ...bnet Mask This is the LAN Subnet Mask of the modem Combined with the IP address the IP Subnet Mask allows a device to know which other addresses are local to it and which must be reached through a gat...

Page 75: ...avoid duplicate addresses on the LAN For most applications the default DHCP and TCP IP settings of the router are satisfactory See IP Configuration by DHCP on page 10 for an explanation of DHCP and i...

Page 76: ...o assign to the computer or server Choose an IP address from the router s LAN subnet such as 192 168 0 x 3 Type the MAC Address and Device Name of the computer or server Tip If the computer is already...

Page 77: ...e company where you are employed This router s address on your LAN is 192 168 0 100 Your company s network is 134 177 0 0 When you first configured your router two implicit static routes were created...

Page 78: ...w to Configure Static Routes 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password...

Page 79: ...type 255 255 255 255 e Type the Gateway IP Address which must be a router on the same LAN segment as the router f Type a number between 2 and 15 as the Metric value This represents the number of rout...

Page 80: ...Reference Manual for the Model DG632 ADSL Modem Router 6 28 Using Router Mode...

Page 81: ...he router but I can t access the Internet Go to Troubleshooting the ISP Connection on page 7 3 I can t remember the router s configuration password Go to Restoring the Default Configuration and Passwo...

Page 82: ...this product If the error persists you have a hardware problem and should contact technical support LAN or WAN Port LEDs Not On If either the LAN LEDs or WAN LED do not light when the Ethernet or USB...

Page 83: ...er s IP address to 192 168 0 1 This procedure is explained in Using the Reset button on page 7 8 Make sure your browser has Java JavaScript or ActiveX enabled If you are using Internet Explorer click...

Page 84: ...oor quality wiring in your house WAN LED Off If the WAN LED is off disconnect all telephones on the line If this solves the problem reconnect the telephones one at a time being careful to use a microf...

Page 85: ...ernet PPPoE or PPP over ATM PPPOA login If you have selected a login program you may have incorrectly set the Service Name User Name and Password See Troubleshooting PPPoE or PPPoA below Your ISP may...

Page 86: ...our computer manually with DNS addresses as explained in your operating system documentation Your computer may not have the modem configured as its TCP IP modem If your computer obtains its informatio...

Page 87: ...On on page 7 2 Check that the corresponding Link LEDs are on for your network interface card and for the hub ports if any that are connected to your workstation and router Wrong network configuration...

Page 88: ...but some ISPs additionally restrict access to the MAC address of a single PC connected to that modem If this is the case you must configure your router to clone or spoof the MAC address from the autho...

Page 89: ...over ATM Power Adapter North America 120V 60 Hz input United Kingdom Australia 240V 50 Hz input Europe 230V 50 Hz input Japan 100V 50 60 Hz input All regions output 7 5VDC 1 0A output 7 5W maximum Phy...

Page 90: ...Reference Manual for the Model DG632 ADSL Modem Router A 2 Technical Specifications LAN 10BASE T or 100BASE Tx RJ 45 USB 1 1 WAN ADSL RJ 11 pins 2 and 3 T1 413 G DMT G Lite ITU Annex A or B...

Page 91: ...documents are listed on the World Wide Web at www ietf org and are mirrored and indexed at many other sites worldwide Basic Router Concepts Large amounts of bandwidth can be provided easily and relat...

Page 92: ...routers periodically update one another and check for changes to add to the routing table The DG632 modem router supports both the older RIP 1 and the newer RIP 2 protocols Among other improvements R...

Page 93: ...ns with a unique bit pattern which is used by the TCP IP software to identify the address class After the address class has been determined the software can correctly identify the host section of the...

Page 94: ...ress of all ones is not assigned but is used as the broadcast address for simultaneously sending a packet to all hosts with the same network address Netmask In each of the address classes previously d...

Page 95: ...aller multiple physical networks known as subnetworks Some of the node numbers are used as a subnet number instead A Class B address gives us 16 bits of node numbers translating to 64 000 nodes Most o...

Page 96: ...54 The following table lists the additional subnet mask bits in dotted decimal notation To use the table write down the original class netmask and replace the 0 value octets with the dotted decimal va...

Page 97: ...h addresses are local and which are remote Private IP Addresses If your local network is isolated from the Internet for example when using NAT you can assign any IP addresses to the hosts without prob...

Page 98: ...ed by a single user with a modem rather than a router The DG632 modem router employs an address sharing method called Network Address Translation NAT This method allows several networked PCs to share...

Page 99: ...ternet Protocol uses the Address Resolution Protocol ARP to resolve MAC addresses If a device sends data to another station on the network and the destination MAC address is not yet recorded ARP is us...

Page 100: ...nd one or more DNS server addresses As an alternative to manual configuration there is a method by which each PC on the network can automatically obtain this configuration information A device on the...

Page 101: ...groups of network connection states Using Stateful Packet Inspection an incoming packet is intercepted at the network layer and then analyzed for state related information associated with all network...

Page 102: ...5 inch 1 5 cm of untwist in the wire pair is allowed at any termination point A twisted pair Ethernet network operating at 10 Mbits second 10BASE T will often tolerate low quality cables but at 100 Mb...

Page 103: ...kstation adapter cards are usually media dependent interface ports called MDI or uplink ports Most repeaters and switch ports are configured as media dependent interfaces with built in crossover ports...

Page 104: ...endant Interface Crossover MDI X When connecting a PC to a PC or a hub port to another hub port the transmit pair must be exchanged with the receive pair This exchange is done by one of two mechanisms...

Page 105: ...atically sense whether the Ethernet 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 router switch or hub That port will t...

Page 106: ...Reference Manual for the Model DG632 ADSL Modem Router B 16 Network and Routing Basics...

Page 107: ...components for establishing a TCP IP network Windows 3 1 does not include a TCP IP component You need to purchase a third party TCP IP application package such as NetManage Chameleon Macintosh Operati...

Page 108: ...following TCP IP configuration information automatically when the PCs are rebooted PC or workstation IP addresses 192 168 0 2 through 192 168 0 254 Subnet mask 255 255 255 0 Gateway address the route...

Page 109: ...ick the Add button b Select Adapter and then click Add c Select the manufacturer and model of your Ethernet adapter and then click OK If you need TCP IP a Click the Add button b Select Protocol and th...

Page 110: ...st way to configure this information is to allow the PC to obtain the information from a DHCP server in the network You will find there are many similarities in the procedures for different Windows sy...

Page 111: ...our Network C 5 Verify the following settings as shown Client for Microsoft Network exists Ethernet adapter is present TCP IP is present Primary Network Logon is set to Windows logon Click on the Prop...

Page 112: ...N Internet Configuration screen and click Next 6 Proceed to the end of the Wizard Verifying TCP IP Properties After your PC is configured and has rebooted you can check the TCP IP configuration using...

Page 113: ...ay need to install and configure TCP IP on each networked PC Before starting locate your Windows CD you may need to insert it during the TCP IP installation process Installing or Verifying Windows Net...

Page 114: ...e configuration process for each of these versions of Windows DHCP Configuration of TCP IP in Windows XP Locate your Network Neighborhood icon Select Control Panel from the Windows XP new Start Menu S...

Page 115: ...This box displays the connection status duration speed and activity statistics Administrator logon access rights are needed to use this window Click the Properties button to view details about the co...

Page 116: ...set to DHCP without your having to configure it However if there are problems follow these steps to configure TCP IP with DHCP for Windows 2000 Verify that the Obtain an IP address automatically radi...

Page 117: ...tions Right click on Local Area Connection and select Properties The Local Area Connection Properties dialog box appears Verify that you have the correct Ethernet card selected in the Connect using bo...

Page 118: ...otocol TCP IP Properties dialogue box Verify that Obtain an IP address automatically is selected Obtain DNS server address automatically is selected Click OK to return to Local Area Connection Propert...

Page 119: ...d you need to configure the TCP IP environment for Windows NT 4 0 Follow this procedure to configure TCP IP with DHCP in Windows NT 4 0 Choose Settings from the Start Menu and then select Control Pane...

Page 120: ...Reference Manual for the Model DG632 ADSL Modem Router C 14 Preparing Your Network Highlight the TCP IP Protocol in the Network Protocols box and click on the Properties button...

Page 121: ...information will be listed and should match the values below if you are using the default TCP IP settings that NETGEAR recommends for connecting through a router or gateway The IP address is between 1...

Page 122: ...tworked Macintosh you need to configure TCP IP to use DHCP MacOS 8 6 or 9 x 1 From the Apple menu select Control Panels then TCP IP The TCP IP Control Panel opens 2 From the Connect via box select you...

Page 123: ...P configuration by returning to the TCP IP Control Panel From the Apple menu select Control Panels then TCP IP The panel is updated to show your settings which should match the values below if you are...

Page 124: ...port is connected to the broadband modem the router appears to be a single PC to the ISP The router then allows the PCs on the local network to masquerade as the single PC to access the Internet thro...

Page 125: ...edures are described next Obtaining ISP Configuration Information for Windows Computers As mentioned above you may need to collect configuration information from your PC so that you can use this infor...

Page 126: ...h so that you can use this information when you configure the DG632 modem router Following this procedure is only necessary when your ISP does not dynamically supply the account information To get the...

Page 127: ...with the router you must reset the network for the devices to be able to communicate correctly Restart any computer that is connected to the firewall After configuring all of your computers for TCP I...

Page 128: ...Reference Manual for the Model DG632 ADSL Modem Router C 22 Preparing Your Network...

Page 129: ...names are of the form of a registered entity name plus one of a number of predefined top level suffixes such as com edu uk and so on For example in the address mail NETGEAR com mail is a server name a...

Page 130: ...devices such as storage and printers Although many technologies exist to implement a LAN Ethernet is the most common for connecting personal computers MAC address Media Access Control address A uniqu...

Page 131: ...ion PPTP Point to Point Tunneling Protocol A method for establishing a virtual private network VPN by embedding Microsoft s network protocol into Internet packets PSTN Public Switched Telephone Networ...

Page 132: ...ta through the network WAN See wide area network wide area network WAN A long distance link used to extend or connect remotely located local area networks The Internet is a large WAN Windows Internet...

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