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Chapter 8. Configuring Dynamic Host Configuration Protocol  

  

101

 

5. Click 

. 

A page displays to confirm your changes, and the program 
returns to the DHCP Relay Configuration page. 

6.  Follow the instructions in “Setting the DHCP Mode” to set the 

DHCP mode to 

DHCP Relay

. 

 

Setting the DHCP Mode 

You must enable the appropriate DHCP mode to activate your 
DHCP relay or DHCP server settings. 

Follow these instructions to set the DHCP mode: 

1.  Click the LAN tab, and then click 

DHCP Mode

 in the task bar. 

The DHCP Configuration page displays: 

 

Figure 39. DHCP Configuration Page 

2.  From the DHCP Mode drop-down list, choose 

DHCP Server

, 

DHCP Relay

, or 

None

. 

If you choose 

none

, your LAN computers must be configured 

with static IP addresses. 

3. Click 

. 

4.  If you want the changes to be permanent, follow the 

instructions on page 46 to commit them. 

 

Содержание TDM-C400

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Страница 2: ... supply cords so that they are not likely to be walked on or pinched by items placed upon or against them Pay particular attention to cords where they are attached to plugs and convenience receptacles and examine the point where they exit from the product z Check Ventilation Slots and openings in the enclosure are provided for ventilation to ensure reliable operation of the product and to protect ...

Страница 3: ...s Product From Wall Outlet Carefully as the Power Adaptor May Be Hot z Refer Servicing to Qualified Service Personnel Under the Conditions Listed Below When the power supply cord or plug is damaged If liquid has been spilled or objects have fallen into the product If the product has been exposed to rain or water If the product does not operate normally by following the operating instructions Adjus...

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Страница 5: ...rt 1 Connecting the Hardware 19 Step 1 Connect the ADSL cable and optional telephone 20 Step 2 Connect the Ethernet cable 20 Step 3 Install USB software and connect the USB cable For Ethernet USB Combo model only 20 Step 4 Attach the power connector 21 Quick Start Part 2 Configuring Your Computers 22 Before you begin 22 Windows XP PCs 22 Windows 2000 PCs 23 Windows Me PCs 24 Windows 95 98 PCs 25 W...

Страница 6: ...fying the TDM E400 TDM C400 Name and Network Domain Name 45 Committing Changes and Rebooting 46 Committing Changes 46 Rebooting the device using Web Configuration 47 Part 2 Interfaces and Operating Modes About Part 2 50 4 Configuring the LAN and USB Interfaces 51 Connecting Your PCs via Ethernet and or USB 51 Configuring the LAN Ethernet Interface 52 Configuring the USB Interface IP Address 55 5 C...

Страница 7: ...ario 1 Routed Connection to ISP 81 Scenario 2 Bridged Connection to ISP 82 Scenario 3 Routed and Bridged Connections to ISP 83 Configuring Special Bridging Features 84 Configuring WAN to WAN Bridging 84 Configuring Bridge Router AutoSense BRAS Mode 85 Configuring ZIPB Mode 86 Part 3 Routing and IP Related Features About Part 3 90 7 Viewing System IP Addresses and IP Performance Statistics 91 Viewi...

Страница 8: ... Relay 104 10 Configuring IP Routes 106 Overview of IP Routes 106 IP routing versus telephone switching 106 Hops and gateways 107 Using IP routes to define default gateways 107 Do I need to define IP routes 107 Viewing the IP Routing Table 108 Adding IP Routes 110 11 Configuring the Routing Information Protocol 111 RIP Overview 111 When should you configure RIP 111 Configuring the Ethernet Modem R...

Страница 9: ...ll Settings 135 Configuring Global Firewall Settings 135 Managing the Blacklist 138 14 Configuring Filters and Blocking Protocols 139 Configuring IP Filters 140 Viewing Your IP Filter Configuration 140 Configuring IP Filter Global Settings 141 Creating IP Filter Rules 142 IP filter rule examples 147 Viewing IP Filter Statistics 148 Managing Current IP Filter Sessions 148 Configuring Bridge Filters...

Страница 10: ...SL Information 169 Using Diagnostics 172 Running the Diagnostics Program 172 Using the Ping Utility 173 Using the Traceroute Utility 174 17 Upgrading the Software and Storing and Restoring the Configuration Data 177 Upgrading the Image 177 Upgrading Using an Image Stored Locally 177 Uploading an Image Stored Remotely 178 Storing and Restoring Configuration Settings 179 18 Modifying Port Settings 1...

Страница 11: ...Table of Contents 11 Network classes 186 Subnet masks 186 B Troubleshooting 188 C Glossary 190 Index 197 ...

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Страница 13: ...he Ethernet Modem Router s interfaces These instructions will be particular use when your network or Internet connection requirements differ from those reflected in the default product settings f Part 3 Routing and IP Related Features provides configuration instructions and detailed information on using the Ethernet Modem Router s routing features such as DHCP server DNS relay and IP routes f Part...

Страница 14: ...ons f Italics are used to identify terms that are defined in the glossary Appendix A f Bolded text is used to identify items you select from menus and drop down lists and text strings you type Special messages This document uses the following icons to call your attention to specific instructions or explanations Note Provides clarifying or non essential information on the current topic Definition E...

Страница 15: ...15 Part 1 Getting Started ...

Страница 16: ... their network with no additional changes required to the product settings Part 1 contains the following chapters f Chapter 1 Getting to Know the describes the product features and provides a parts list f Chapter 2 Quick Start provides instructions for setting up the hardware and for performing initial configuration of the Ethernet Modem Router and your LAN PCs f Chapter 3 Getting Started with the...

Страница 17: ...g IP route and DNS server configuration RIP and IP and DSL performance monitoring f Configuration program you access via your Web browser System Requirements In order to use the Ethernet Modem Router you must have the following f ADSL ADSL2 ADSL2 service up and running on your telephone line f One or more computers each containing an Ethernet 10Base T 100Base T network interface card NIC and or a ...

Страница 18: ... Router RJ 45 Cable straight through type RJ 11 Standard phone DSL line cable USB Cable for Ethernet USB combo model only AC Power Adapter User s Guide USB Driver CD Getting Support All packages have been checked carefully for their completeness and functionality before shipped Please contact the place of purchase if any of the above listed items is missing or damaged ...

Страница 19: ... is working properly This Quick Start assumes that you have already established ADSL service with your Internet service provider ISP These instructions provide a basic configuration that should be compatible with your home or small office network setup If necessary refer to the subsequent chapters for additional configuration instructions Quick Start Part 1 Connecting the Hardware In Quick Start P...

Страница 20: ...a single computer or hub you can use a straight through or crossover Ethernet cable to attach the PC directly to the device The crossover cable is wired differently than the cable you would use to connect to a hub When you compare the colored wires on each end of a cable they will be in the same sequence on crossover cables they will not Contact your ISP for assistance Step 3 Install USB software ...

Страница 21: ...e power connector Connect the AC power adapter to the Power connector on the back of the device and plug in the adapter to a wall outlet or power strip Turn on and boot up your computer s and any connected LAN devices such as hubs or switches ...

Страница 22: ...ctions on page 28 f If you have connected your PC s or LAN via Ethernet to the Ethernet Modem Router follow the instructions that correspond to the operating systems installed on your PCs Windows XP PCs 1 In the Windows task bar click and then click Control Panel 2 Double click the Network Connections icon 3 In the LAN or High Speed Internet window right click on the icon corresponding to your net...

Страница 23: ...lick 6 Select Internet Protocol TCP IP in the Network Protocols list and then click You may be prompted to install files from your Windows 2000 installation CD or other media Follow the instructions to install the files 7 If prompted click to restart your computer with the new settings Next configure the PCs to accept IP information assigned by the Ethernet Modem Router 8 In the Control Panel doub...

Страница 24: ... Microsoft in the Manufacturers box 7 Select Internet Protocol TCP IP in the Network Protocols list and then click You may be prompted to install files from your Windows Me installation CD or other media Follow the instructions to install the files 8 If prompted click to restart your computer with the new settings Next configure the PCs to accept IP information assigned by the Ethernet Modem Route...

Страница 25: ... box 6 Click to return to the Network dialog box and then click again You may be prompted to install files from your Windows 95 98 installation CD Follow the instructions to install the files 7 Click to restart the PC and complete the TCP IP installation Next configure the PCs to accept IP information assigned by the Ethernet Modem Router 8 Open the Control Panel window and then click the Network ...

Страница 26: ...IP and then click You may be prompted to install files from your Windows NT installation CD or other media Follow the instructions to install the files After all files are installed a window displays to inform you that a TCP IP service called DHCP can be set up to dynamically assign IP information 6 Click to continue and then click if prompted to restart your computer Next configure the PCs to acc...

Страница 27: ...ed to the LAN interface on the Ethernet Modem Router By default the LAN interface is assigned this IP address 192 168 1 254 You can change this number or another number can be assigned by your ISP See Chapter 4 for more information f The IP address of your ISP s Domain Name System DNS server On each PC follow the instructions on pages 22 through 26 relating only to checking for and or installing t...

Страница 28: ...USB driver on the PC f In USB Driver Installation Part 2 you configure the IP properties on the PC USB Driver Installation Part 1 Installing the USB Driver on the PC 1 Ensure that the USB cable is not connected to the USB port on the PC The installation program will prompt you when to connect the cable 2 Copy the USB installation files to a temporary directory on the USB computer 3 In the folder w...

Страница 29: ...ng window displays as the Wizard prepares your system for the installation Figure 4 USB Setup Wizard Installing Page If a Microsoft digital signature dialog box displays click to continue The Installer begins copying the necessary installation files to the required locations When complete a window displays prompting you to connect the USB cable to your computer ...

Страница 30: ...e square connector to the Ethernet Modem Router See Figure 6 To ADSL Ethernet router To PC Figure 6 USB Cable Connectors If a Microsoft digital signature dialog box again displays click to continue A window displays briefly indicating that the system has found new hardware and the Finished page displays to complete the installation Figure 7 DSL Modem Setup Wizard Finished Page 7 Click You are now ...

Страница 31: ...orrespond to the operating system installed on your PC f If you want to assign a static IP address to the PC follow the instructions on page 27 and use the following information o In the Network and Dial up Connections window be sure to select the icon that corresponds to your new USB connection not the one that corresponds to your Ethernet NIC When you display properties for the icon the followin...

Страница 32: ...TDM E400 TDM C400 ADSL2 Modem Router User s Manual 32 ...

Страница 33: ...which enables you to configure the operation of the device via your Web browser The settings that you are most likely to need to change before using the device display on the Quick Configuration page Follow these instructions configure the device settings 1 At any PC connected to the Ethernet Modem Router via Ethernet or USB open your Web browser and type the following URL in the address location ...

Страница 34: ...as provided a public IP address to your LAN enter the address and the associated subnet mask in the boxes provided Note In bridge configurations the public IP address may be entered on your PC rather than on the ADSL2 Ethernet Modem Router check with your ISP Chapter 5 Use DHCP When enabled your ISP will assign IP addresses to your WAN interface When disabled the WAN interface must Chapter 5 Defau...

Страница 35: ...hernet Modem Router can provide a variety of services to your network The device is pre configured with default settings for use with a typical home or small office network Table 1 lists some of the most important default settings these and other features are described fully in subsequent chapters If you are familiar with network configuration review the settings in Table 1 to verify that they mee...

Страница 36: ...t to a single USB enabled computer with an IP address in the same subnet See Chapter 4 for instructions WAN interface connecting to the Internet ATM VC VPI 0 VCI 35 The VPI and VCI values make up a VC virtual circuit that determines the path your data must take to connect over the phone lines to the ISP These values must be changed as directed by your ISP See Chapter 5 for more information PPP int...

Страница 37: ...ink is ready ON Green PPP sync up 3 PPP Blinking Green Data transmitting 4 LAN ON Green Ethernet transmitting 5 USB LAN For Ethernet USB Combo only ON Green USB port is connected If the LEDs illuminate as expected test your Internet connection from a LAN computer and from the USB computer if applicable Open your web browser and type the URL of any external website such as http www yahoo com The LE...

Страница 38: ...To access the program you need the following f A PC or laptop connected to the LAN port on the device as described in the Quick Start chapter f A web browser installed on the PC The program is designed to work best with Microsoft Internet Explorer version 5 0 Netscape Navigator version 6 1 or later versions You can access the program from any computer connected to the Ethernet Modem Router via the...

Страница 39: ...d and then click The first time you log into the program use these defaults Default User Name admin Default Password admin Note You can change the password at any time see Chapter 15 for instructions The System View page on the Home tab displays each time you log into the program shown in Figure 11 on page 40 ...

Страница 40: ... The same task may appear in more than one tab when appropriate For example the Lan Config task displays in both the LAN tab and the Routing tab Commonly used buttons The following buttons are used throughout the application Button Function Stores in temporary system memory any changes you have made on the current page See Committing Changes on page 46 for instructions on storing changes permanent...

Страница 41: ...e related pages in Web Configuration where you can change the data or view details The following table describes each section of the System View table Table Heading Description Device Displays basic information about the Ethernet Modem Router hardware and software versions the system uptime since the last reboot and the pre configured operating mode DSL Displays the operational status version and ...

Страница 42: ...es of these interfaces see Chapter 4 Services Summary Displays the status of various services that the Ethernet Modem Router performs to help you manage your network A green check mark indicates the service is active and a red X indicates that it is inactive o NAT Translates private IP addresses to your public IP address The type of NAT interface is indicated inside outside See Chapter 12 o IP Fil...

Страница 43: ...power is turned off or you reboot the date and time revert to default values and must again be updated f When you enable SNTP Simple Network Time Protocol the device connects to an ISP server that provides the date and time information You cannot use Web Configuration to specify the IP address of this server it must have been included as a preconfigured software setting Verify with the ISP that th...

Страница 44: ...t Time Zone Daylight Savings Time If you are setting the date and time manually you can select your time zone from the drop down list and then click the appropriate radio button to indicate whether Daylight Savings Time is currently in effect After you initially set the time turning DST on or off will adjust the current displayed time by one hour in the appropriate direction You must remember to c...

Страница 45: ...ame field blank then you could type the following in your Web browser to access Web Configuration http myrouter f If you also specify a domain name for the ADSL2 Ethernet Modem Router the next time you access Web Configuration type the domain name and the device name in your Web browser For example if you entered myrouter in the Name field and mydomain com in the Domain Name field then you would t...

Страница 46: ...nition Submitting changes activates them immediately but saves them only until the device is reset or powered down Committing changes saves them permanently Follow these steps to commit changes 1 Click the Admin tab and then click Commit Reboot in the task bar The Commit Reboot page displays Figure 13 Commit Reboot Page 2 Click Disregard the selection in the Reboot Mode drop down list it does not ...

Страница 47: ...This option is intended only for technicians who have a serial port connection to the device and knowledge of its command line interface Reboot from Minimum Configuration Reboots the device with only these settings o An Ethernet interface is configured with IP address 192 168 1 254 mask 255 255 255 0 o The user login is set to the following User Name admin Password admin Rebooting may take 20 30 s...

Страница 48: ......

Страница 49: ...49 Part 2 Interfaces and Operating Modes ...

Страница 50: ...t Operating modes determine which protocols the device can use to communicate with LAN computers and the ISP and which product features are made available to the user Part 2 contains the following chapters f Chapter 4 Configuring the LAN and USB Interfaces explains how to configure the Ethernet and USB interfaces which connect though distinct ports to your LAN hub switch and optional USB enabled P...

Страница 51: ...s f You can connect the PC directly to the LAN port using a crossover Ethernet cable See Appendix B Troubleshooting for a description of crossover versus straight through Ethernet cables f If the PC is USB enabled you can connect it directly to the device s USB port Only one computer can be connected in this manner You can also use the USB and Ethernet ports simultaneously connecting your LAN via ...

Страница 52: ... initially configure one PC as indicated in the Quick Start Then access Web Configuration and change the LAN IP address as required When done change the IP properties on the PC so that it is also in the appropriate subnet If your network uses a DHCP server other than the ADSL Ethernet Modem Router to assign IP addresses you can also configure the device to accept and use a LAN IP address assigned ...

Страница 53: ...ndicates that you will be assigning a static IP address which you can enter in the fields below o External DHCP Server indicates that your ISP will be assigning an IP address from their own DHCP server dynamically each time you log on o Internal DHCP Server indicates that you have a DHCP server device on your network that will assign an address to the port If you choose either the internal or exte...

Страница 54: ...sing routing services on you LAN such as DHCP and NAT you must assign a fixed LAN IP address and mask to the interface The IP address must be in the same subnet as your LAN computers that connect to it See Appendix A for an explanation of IP addresses and network masks If you change the LAN IP address you may need to update the DHCP configuration so that the addresses that the DHCP server dynamica...

Страница 55: ...rmanent follow the instructions on page 46 to commit them Configuring the USB Interface IP Address 1 If the LAN Configuration page is not already displaying click the LAN tab If the USB Configuration table does not display below the LAN Configuration table then your system does not support a USB connection Contact your ISP for assistance 2 In the USB Configuration table enter the IP Address and Ne...

Страница 56: ...m your change and your connection will remain active 6 If necessary reconfigure your USB PC so that its IP address places it in the same subnet as the new IP address of the USB interface See Quick Start Part 2 Configuring Your Computers for instructions 7 Log into Web Configuration by typing the new USB interface IP address in your Web browser s address location box 8 If you want the changes to be...

Страница 57: ...t Modem Router uses to communicate via the ATM based network with the telephone company central office equipment f The higher level protocol interface s operate on top of the ATM VC interface The higher level interface handles the protocols needed to log onto and exchange data with the ISP s access server ISPs can use several different protocols including the Point to Point Protocol PPP Ethernet o...

Страница 58: ...ription Interface The name of the ATM interface to which these VC properties apply The ATM interface names identify the type of traffic that can be supported such as data or voice Internet data services typically use an AAL5 type interface Vpi Vci and Mux Type These settings identify a unique ATM data path for communication between your ADSL ADSL2 Ethernet Modem Router and your ISP Max Proto per A...

Страница 59: ...ays Figure 16 ATM VC Interface Modify Page 2 Enter the new VPI and VCI values select the MUX type or change the maximum number of protocols that the VC can carry as directed by your ISP 3 Click 4 On the confirmation page click to return to the ATM VC Configuration page 5 If you want the changes to be permanent follow the instructions on page 46 to commit them If you already have defined a higher l...

Страница 60: ...SP and select the mux type from the drop down list 4 In the Max Proto per AAL5 text box enter the number of higher level protocols PPP EoA and IPoA that the ISP indicated that you will need to configure to operate over this VC For many users only one is required 5 Click 6 When the confirmation page displays click to return to the ATM VC Configuration page The new interface should now display in th...

Страница 61: ...er of two types PPP over ATM PPPoA and PPP over Ethernet PPPoE Although to the end user they function similarly the ISP s network may be configured to handle only one protocol type Furthermore an ISP may not use the PPP protocol at all instead offering EoA type connections described on page 67 Contact your ISP before changing the preconfigured WAN interface type Viewing Your Current PPP Configurat...

Страница 62: ... which this PPP data is sent The VC identifies the physical path the data takes to reach your ISP Interface Sec Type The type of firewall protections that are in effect on the interface public private or DMZ o A public interface connects to the Internet PPP interfaces are typically public Packets received on a public interface are subject to the most restrictive set of firewall protections defined...

Страница 63: ...NS When set to Enable the DNS address learned through the PPP connection will be distributed to clients of the device s DHCP server This option is useful only when the ADSL ADSL2 Ethernet Modem Router is configured to act as a DHCP server for your LAN When set to Disable LAN hosts will use the DNS address es specified in the DHCP pool see Configuring DHCP Server on page 95 and specified in the DNS...

Страница 64: ...The PPP interface has been manually disabled and cannot currently be used It can only be used after being manually returned to the Start state o Start On Data The PPP connection will be established automatically whenever data is sent to the interface e g when a LAN user attempts to use the Internet and will time out whenever the interface is idle for a specified amount of time Service Name This fe...

Страница 65: ...cified on the PPP Configuration page o Auth Failure The ISP could not authorize the connection based on the user name and or password provided o PADT Recvd The ISP issued a special packet type to terminate the PPP connection o VC down The Virtual Circuit between the device and the ISP is down o Internal failure A system software failure occurred DNS The IP address of the DNS server located with yo...

Страница 66: ...ype you want to create PPPoA or PPPoE and whether other WAN interface types have already been configured EoA or IPoA Contact your ISP for assistance 1 From the PPP Configuration Page click The PPP Interface Add page displays Figure 20 PPP Interface Add Page 2 Select a PPP interface name from the drop down list and then enter or select data for each field The fields are defined in the tables on pag...

Страница 67: ...ed connection with the ISP which uses the IP protocol to exchange data See Chapter 6 Configuring the System Operating Mode for more information on bridged and routed Internet connections Before creating an EoA interface or modifying the default settings contact your ISP to determine which type of protocol they use Note PPP and EoA Bridged Internet connections must use an EoA WAN interface Routed I...

Страница 68: ...est level they are associated with a physical port the WAN port This field should reflect an interface name defined in the next lower level of software over which the EoA interface will operate This will be an ATM VC interface such as aal5 0 Config IP Address and Netmask The IP address and network mask you want to assign to the interface If the interface will be used for bridging with your ISP and...

Страница 69: ...ions to add an EoA interface 1 Click the WAN tab and then click EOA in the task bar 2 Click The EoA Interface Add page displays Figure 22 EoA Interface Add Page 3 Select one of the predefined interface names from the EoA Interface drop down list 4 From the Interface Sec Type drop down list select the level of IP Firewall to be used on this interface as defined on page 68 5 In the Lower Interface f...

Страница 70: ...ridged connection then deselect this field 9 In the Gateway IP Address field enter the address of your ISP s access server 10 Click A confirmation page displays to confirm your changes 11 Click to return to the EoA page and view the new interface in the table f If the interface will be used to provide only a routed connection to your ISP skip to step 16 f If the interface will be used to provide a...

Страница 71: ...terface will be capable of handling both bridged and routed data packets 14 Click the Bridging Enable Disable link The System Mode page displays Figure 24 System Mode Page You can also access the System Mode page from the task bar in the Home tab 15 Click the Bridging Enabled radio button if not already selected and then click A page will briefly display to confirm your changes and will return you...

Страница 72: ...Sec Type The type of security protections in effect on the interface public private or DMZ o A public interface connects to the Internet IPoA interfaces are typically public Packets received on a public interface are subject to the most restrictive set of firewall protections defined in the software o A private interface connects to your LAN such as the Ethernet interface Packets received on a pri...

Страница 73: ...P is enabled this address serves as a request to the remote computer s DHCP server which may assign another address Gateway Address The external IP address that the ADSL ADSL2 Ethernet Modem Router communicates with via the IPoA interface to gain access to the Internet This is typically an ISP server Status A green or red ball will display to indicate that the interface is currently up or down res...

Страница 74: ...nother address if necessary 4 From the Interface Sec Type drop down list select the level of firewall security for the interface Public Private or DMZ see page 72 for definitions 5 In the RFC 1577 field click the Yes radio button if the interface complies with the IETF specification RFC 1577 and click 6 If the remote IPoA computer provides a DHCP server you can click the Enable radio button in the...

Страница 75: ...The IPoA Map Information page displays Figure 27 IPoA Interface Map Page 12 From the Lower Interface drop down list select the ATM VC interface you want to map the IPoA interface to and then click 13 Click to return to the IPoA Configuration page 14 If you want the changes to be permanent follow the instructions on page 46 to commit them To view all IPoA to ATM VC interface mappings click at the b...

Страница 76: ...to devices such as network interface cards that enable computers to connect to networks The bridge determines which hardware IDs are connected on each side of the bridge and stores these associations in its bridge forwarding table For example when the Ethernet Modem Router is acting as a bridge it learns to associate the hardware IDs of each of your LAN computers with its LAN interface e g eth 0 o...

Страница 77: ...s with its MAC address When a PC initiates communication through the router outside the network the router sends out IP packets to the Internet on behalf of the PC revealing only the PC s IP address As IP packets are received in response the router reconciles the IP address with the PCs MAC address and sends Ethernet MAC layer packets on the network for the PC to claim Because they use a standardi...

Страница 78: ...uting f When the Bridging setting is enabled and at least one LAN or WAN interface is IP enabled then the system mode will display as Routing and Bridging f When the Bridging setting is enabled and no interfaces are IP enabled then the device is considered to be in Bridging Mode Note however that in this case you would not be able to access Web Configuration without being IP enabled the Ethernet i...

Страница 79: ...rface for forwarding through the device s other bridgeable interfaces If an interface is not bridgeable it can only forward IP packets assuming the interface has been IP enabled Note If you create a LAN or WAN interface it must be IP enabled bridge enabled or both An interface that has no IP address and is not made bridgeable will not pass any data Follow these instructions to specify which interf...

Страница 80: ...system but is no longer capable of performing bridging Enabling Bridging Mode After you have created bridgeable interfaces you must enable the bridging service on the system as a whole 1 Click the Home tab and then click System Mode in the task bar The System Mode page displays Figure 31 System Mode Page You can also access the System Mode page from Bridging page Click any of the links that displa...

Страница 81: ...ace can also be used but they are rarely used in customer settings See Chapter 5 for instructions o If an EoA interfaces is created an IP address should be assigned to it Or the interface should be configured to receive an IP address through DHCP o For PPP interfaces IP information is assigned when the link is negotiated o For either type of WAN interface the Default Gateway check box is normally ...

Страница 82: ...m Router can also continue to provide certain IP based services to your LAN such as DHCP server and DNS relay f Both the LAN eth 0 and or usb 0 and the WAN interfaces eoa 0 are enabled for bridging See Making Interfaces Bridgeable Bridge Enabled on page 79 f The bridging service is enabled See Enabling Bridging Mode on page 80 f The ISP should provide setup instructions for the LAN PC s which may ...

Страница 83: ... path the bridging path may be able to use the same interface Check with your ISP f Bridging is enabled on the LAN interface eth 0 and or usb 0 and on the EoA interface to be used for the bridging path If separate interfaces are created for the bridging and routing paths then enable bridging only on the EoA interface to be used for bridging See Making Interfaces Bridgeable Bridge Enabled on page 7...

Страница 84: ...his ability may not however be desirable for all users due to security concerns and bandwidth constraints If this is the case WAN to WAN bridging should be disabled Follow this procedure to enable or disable WAN to WAN bridging 1 Click the Bridging tab 2 In the interface table select all WAN interfaces and any others on which you want to perform bridging and click 3 Click the WAN to WAN bridging E...

Страница 85: ...nt indicating a bridge deployment then the modem automatically switches to bridging mode by stopping its own PPPoE client causing PPPoE packets to be bridged from the LAN side 3 Otherwise no PPPoE traffic is detected the modem continues to operate as before in bridging mode non PPPoE traffic as well as routing mode Follow these instructions to enable Bridge Router AutoSense 1 Ensure that both a PP...

Страница 86: ...both use the same IP address Working with your ISP follow this procedure to enable ZIPB mode 1 Ensure that your PCs are configured to accept IP information assigned by a DHCP server See Quick Start Part 2 Configuring Your Computers for instructions 2 Ensure that at least one PPPoE or PPPoA interface has been created on the Ethernet Modem Router See Chapter 5 for instructions The Status field for t...

Страница 87: ...uring the System Operating Modes 87 8 Click A page displays briefly to confirm the change and the System Mode page redisplays 9 If you want the changes to be permanent follow the instructions on page 46 to commit them ...

Страница 88: ......

Страница 89: ...89 Part 3 Routing and IP Related Features ...

Страница 90: ...rotocol describes how to configure the Ethernet Modem Router s DHCP server and DHCP relay agent to dynamically assign IP information to your LAN PCs f Chapter 9 Configuring DNS Server Addresses describes how to specify the IP addresses for the Domain Name Servers that your LAN will use when accessing the Internet f Chapter 10 Configuring IP Routes describes how to create rules that specify the dev...

Страница 91: ... Mask and interface names IF Name for each of its IP enabled interfaces The listed IP addresses may include f The IP address of the device s LAN Ethernet port called eth 0 See Chapter 4 for instructions on configuring this address f The IP address of the device s USB interface named usb 0 See Chapter 4 for instructions on configuring this address f The IP address of the WAN ADSL line interface whi...

Страница 92: ...s a packet is a collection of data that has been bundled for transmission You will not typically need to view this data but you may find it helpful when working with your ISP to diagnose network and Internet data transmission problems To view global IP statistics click on the IP Address Table page Figure 33 shows the IP Global Statistics page Figure 33 IP Global Statistics Page To display updated ...

Страница 93: ... an IP address or you specified that it will receive IP information dynamically automatically If you chose to have the information assigned dynamically then you configured your PCs as DHCP clients that will accept IP addresses assigned from a DCHP server such as the Ethernet Modem Router The DHCP server draws from a defined pool of IP addresses and leases them for a specified amount of time to you...

Страница 94: ...the Internet f If your ISP performs the DCHP server function for your network then you can configure the device as a DHCP relay agent When a computer logs onto the network the Ethernet Modem Router contacts the ISP for the necessary IP information which it relays back to the computer f If you have another PC or device on your network already performing the DHCP server function then you can configu...

Страница 95: ...hat can be assigned to your LAN PCs connected via the Ethernet port and to a USB connected computer as long you have assigned to the USB and Ethernet interfaces static IP addresses that place them in the same subnet See Appendix A for an explanation of subnets For example assume you assigned the following addresses to the Ethernet and USB interfaces Ethernet interface eth 0 IP address 192 168 1 25...

Страница 96: ...y over the Ethernet and USB interfaces Adding DHCP Server Address Pools Follow these instructions to create an IP address pool 1 Log into Web Configuration click the LAN tab and then click DHCP Server in the task bar The DHCP Server Configuration page displays Figure 34 DHCP Configuration Page Depending on your pre configured settings the table may display up to two address pools each in a row or ...

Страница 97: ...ndix A You can use the network mask to distinguish which pool of addresses should be distributed to a particular subnet as explained on page 95 Domain Name A user friendly name that refers to the subnet that includes the addresses in this pool This is used for reference only Gateway Address The address of the default gateway for computers that receive IP addresses from this pool If no value is spe...

Страница 98: ...s pool display the DHCP Server Configuration page and click the icons in the corresponding row in the address pool table f To delete an IP address pool click then submit and commit your changes f To view details on an IP address pool click A page displays with the same information that you entered when you added the pool f To modify the pool click The DHCP Server Pool Modify page displays Figure 3...

Страница 99: ...s similar to that shown in Figure 37 Figure 37 DHCP Server Address Table Page The DHCP Server Address Table lists any IP addresses that are currently leased to your computers For each leased address the table lists the following information Field Description IP Address The address that has been leased from the pool Netmask The network mask associated with the leased address This identifies the net...

Страница 100: ...on your operating system For detailed instructions see Quick Start Part 2 Configuring Your Computers for instructions Next you specify the IP address of the DHCP server and select the interfaces on your network that will be using the relay service 2 Log into the Web Configuration click the LAN tab and then click DHCP Relay in the task bar The DHCP Relay Configuration page displays Figure 38 DHCP R...

Страница 101: ...opriate DHCP mode to activate your DHCP relay or DHCP server settings Follow these instructions to set the DHCP mode 1 Click the LAN tab and then click DHCP Mode in the task bar The DHCP Configuration page displays Figure 39 DHCP Configuration Page 2 From the DHCP Mode drop down list choose DHCP Server DHCP Relay or None If you choose none your LAN computers must be configured with static IP addre...

Страница 102: ......

Страница 103: ...Ps typically provide primary and secondary DNS addresses and may provide additional addresses Your LAN PCs learn these DNS addresses in one of the following ways f Statically If your ISP provides you with their DNS server addresses you can assign them to each PC by modifying the PCs IP properties f Dynamically from a DHCP pool You can configure the DHCP Server feature on the ADSL2 Ethernet Modem R...

Страница 104: ...s advantageous in that you will not need to reconfigure the PCs or the ADSL2 Ethernet Modem Router if the ISP changes their DNS addresses f Configured on the ADSL Ethernet Modem Router You can use the device s DNS feature to specify the ISP s DNS addresses If the device also uses a PPP interface with the Use DNS property enabled then these configured addresses can be used in addition to the two ad...

Страница 105: ...e table then an alert will display in the System Log window see the Admin tab System Log page You can specify the interval in minutes between each DNS poll message in the DNS Relay Poll Timeout text box d Click the Enable radio button and then click 3 If you want the changes to be permanent follow the instructions on page 46 to commit them Note DNS addresses that are assigned to LAN PCs prior to e...

Страница 106: ... the middle set of three numbers and connect to a more localized switchboard that handles numbers with that prefix This final switchboard can then look at the last four digits of the phone number to open a connection with the person or company you dialed In comparison when your computer initiates communication over the Internet such as viewing a web page connecting to an web server the data it sen...

Страница 107: ...e devices provides a good next hop because no such route has been defined then that device will forward the data to its default gateway Eventually a high level device using a predefined IP route will be able to forward the data along a path to its destination Do I need to define IP routes Most users do not need to define IP routes On a typical small home or office LAN the existing routes that set ...

Страница 108: ...able To view the Ethernet Modem Router s routing table click the Routing tab The IP Route page displays by default Figure 41 IP Route Table Page The IP Route Table displays a row for each existing route These include routes that were predefined on the device routes you may have added and routes that the device has identified automatically through communication with other devices The routing table ...

Страница 109: ... its final destination is that shown in the destination column IFName Displays the name of the interface on the device through which data is forwarded to the specified next hop Route Type Indicates whether the route is direct or indirect In a direct route the source and destination computers are on the same network and the router attempts to directly deliver the data to the computer In an indirect...

Страница 110: ...y for your LAN enter 0 0 0 0 in both the Destination and Netmask fields Enter your ISP s IP address in the Gateway NextHop field Note that you cannot specify the interface name route type or route origin These parameters are used only for routes that are identified automatically as the device communicates with other routing devices For routes you create the routing table displays system default va...

Страница 111: ...te locations such as the computers telecommuters use Using RIP each device sends its routing table to its closest neighbor every 30 seconds The neighboring device in turn passes the information on to its next neighbor and so on until all devices in the autonomous network have the same set of routes When should you configure RIP Most small home or office networks do not need to use RIP they have on...

Страница 112: ...table listing interfaces on which the protocol is currently running The first time you open this page the table may be empty 2 If necessary change the Age and Update Time values These are global settings for all interfaces that use RIP f Age is the amount of time in seconds that the device s RIP table will retain each route that it learns from adjacent computers f Update Time specifies how frequen...

Страница 113: ...e will use when it sends its route information to other devices The Receive Mode setting indicates the RIP version s in which information must be passed to the Ethernet Modem Router in order for it to be accepted into its routing table RIP version 1 is the original RIP protocol Select RIP1 if you have devices that communicate with this interface that understand RIP version 1 only RIP version 2 is ...

Страница 114: ...m the RIP Configuration page you can click to view statistics on attempts to send and receive route table data over RIP enabled interfaces on the Ethernet Modem Router Figure 44 RIP Global Statistics Page You can click to reset all statistics to zero and to display any newly accumulated data ...

Страница 115: ...115 Part 4 Security Features ...

Страница 116: ...public Internet address to be shared among multiple PCs on your LAN This chapter explains how to configure NAT rules of various types f Chapter 13 Configuring Firewall Settings describes the protections available in the embedded firewall and how to enable and disable them f Chapter 14 Configuring Filters and Blocking Protocols describes how to create filters that allow or disallow various types of...

Страница 117: ...e IP address Or you define a pool of private IP addresses for dynamic assignment to your computers as described in Chapter 8 On the Ethernet Modem Router you set up a NAT rule to specify that whenever one of your computers communicates with the Internet that is it sends and receives IP data packets its private IP address which is referenced in each packet will be replaced by the LAN s public IP ad...

Страница 118: ...puter NAT rules such as these provide several benefits f They eliminate the need for purchasing multiple public IP addresses for computers on your LAN You can make up your own private IP addresses at no cost and then have them translated to the public IP address when your computers access the Internet f They provide a measure of security for you LAN by enabling you to assign private IP addresses a...

Страница 119: ...ration page contains the following elements f The NAT Options drop down list which provides access to the NAT Configuration page and Global Information table shown by default and in Figure 45 the NAT Rule Configuration page see Figure 47 and the NAT Translations page see Figure 49 f Enable Disable radio buttons which allow you to turn on or off the NAT feature f The NAT Global Information table wh...

Страница 120: ...lose Wait When in the establishing state the session will timeout if no packets are received for the time specified in TCP Def Timeout UDP Timeout sec Same as TCP Idle Timeout but for UDP based communication sessions ICMP Timeout sec Same as TCP Idle Timeout but for ICMP based communication sessions GRE Timeout sec Same as TCP Idle Timeout but for GRE based communication sessions ESP Timeout sec S...

Страница 121: ...twork Address Translation 121 Figure 46 NAT Rule Global Statistics Page The table provides basic information for each NAT rule you have set up You can click to restart the accumulation of the statistics at their initial values ...

Страница 122: ... these fields refer to the instructions for adding rules pages 125 through 134 From the NAT Rule Configuration page you can click to add a new rule or use the icons in the right column to delete or view details on a rule To view data on how often a specific NAT rule has been used click in the Action s column A page displays similar to the one shown in Figure 48 Figure 48 NAT Rule Statistics Page T...

Страница 123: ... NAT rule was invoked from the rule definition Protocol The IP protocol used by the data packets that are undergoing translations from the rule definition Example TCP UDP ICMP Alg Type The Application Level Gateway ALG if any that was used to enable this NAT translation ALGs are special settings that certain applications require in order to work while NAT is enabled NAT Direction The direction Ins...

Страница 124: ...to which the private IP address was translated In Address The private IP address that was translated Out Address The IP address of the outside destination web ftp site etc In Out Packets The number of incoming and outgoing IP packets that have been translated in this translation session In Ports The actual port number corresponding to the LAN computer Out Ports The port number associated with the ...

Страница 125: ...s used in your default configuration The NAPT flavor translates private source IP addresses to a single public IP address The NAPT rule also translates the source port numbers to port numbers that are defined on the NAT Global Configuration page see page 119 The introduction to NAT on page 117 describes how the NAPT rule works 1 Click the NAT tab and then select NAT Rule Entry from the NAT Options...

Страница 126: ... Address To fields type the starting and ending IP addresses respectively of the range of private address you use on your network that you want to be translated You can specify that data from all LAN addresses should be translated by typing 0 zero in each From field and 255 in each To field Or type the same address in both fields if the rule only applies to one computer 7 In the Global Address Fro...

Страница 127: ... a packet containing a request for access to your Web server The packet header contains the public address for your LAN as the destination IP address and a destination port number of 80 Because you have set up an RDR rule for incoming packets with destination port 80 the device recognizes the data as a request for Web server access The device changes the packet s destination address to the private...

Страница 128: ...y be used for load balancing whereby traffic is distributed among several redundant servers to help ensure efficient network performance These addresses should correspond to private addresses already in use on your network either assigned statically to your PCs or assigned dynamically using DHCP as discussed in Quick Start Part 2 Configuring Your Computers 5 In the Global Address From and Global A...

Страница 129: ...vailable is configured to use a non standard port number for the type of traffic it receives type the non standard port number in the Local Port field This option translates the standard port number in packets destined for your LAN computer to the non standard number you specify For example if your Web server uses non standard port 2000 but you expect incoming data packets to refer to standard por...

Страница 130: ...ce on which this rule will be effective 3 Select a protocol to which this rule applies or choose ANY This selection specifies which type of Internet communication will be subject to this translation rule You can select ALL if the rule applies to all data Or select TCP UDP ICMP or a number from 1 255 that represents the Internet Assigned Numbers Authority IANA specified protocol number 4 In the Loc...

Страница 131: ...Filter flavor extends the capability of the Basic rule Refer to The Basic Rule on page 130 for a general description You can use the Filter rule if you want an address translation to occur only when your LAN computers initiate access to specific destinations The destinations can be identified by their IP addresses port type which identifies it as a FTP or Web server for example or both Figure 54 s...

Страница 132: ...rting and ending address that identify the range of public IP addresses to translate your private addresses to Or type the same address in both fields if you also specified a single address in step 4 6 In the Destination Address From To fields specify a destination address or range if you want this rule to apply only to outbound traffic to the address or range If you enter only the network ID port...

Страница 133: ...e external access to a LAN device They do not provide the same level of security as RDR rules because RDR rules also reroute incoming packets based on the port ID Bimap rules do not account for the port number and therefore allow external access regardless of the destination port type specified in the incoming packet Figure 55 shows the fields used to establish a Bimap rule Figure 55 NAT Rule Add ...

Страница 134: ...y rule number 5 then you can create a Pass rule with an ID number from 1 to 4 Follow these instructions to add a Pass rule see steps 1 4 under The NAPT rule on page 125 for detailed instructions corresponding to steps 1 and 2 below 1 Display the NAT Rule Add Page select PASS as the Rule Flavor and enter a Rule ID 2 Select the interface on which this rule will be effective 3 In the Local Address Fr...

Страница 135: ...cious accesses to your LAN You can also specify how to monitor attempted attacks and who should be automatically notified Configuring Global Firewall Settings Follow these instructions to configure global firewall settings 1 Log into Web Configuration click the Services tab and then click Firewall in the task bar The Firewall Configuration page displays Figure 57 Firewall Configuration Page ...

Страница 136: ...ess o Land Attack Sending packets that use the same address as the source and destination address o Ping of Death Illegal IP packet length DoS Protection Click the Enable radio button to use the following denial of service protections o SYN DoS o ICMP DoS o Per host DoS protection Max Half open TCP Connection Sets the percentage of concurrent IP sessions that can be in the half open state In ordin...

Страница 137: ...ed firewall violations Type the addresses in standard internet e mail address format e g jxsmith onecompany com The e mail message will contain the time of the violation the source address of the computer responsible for the violation the destination IP address the protocol being used the source and destination ports and the number violations occurring the previous 30 minutes If the ICMP protocol ...

Страница 138: ...tom of the Firewall Configuration page The Firewall Blacklisted Hosts page displays Figure 58 Firewall Blacklisted Hosts Page The table displays the following information for each entry Field Description Host IP Address The IP address of the computer that sent the packet s that caused the violation Reason A short description of the type of violation If the packet violated an IP filter rule the cus...

Страница 139: ...ctivity they can also be complex and generally require an advanced understanding of IP protocols f The bridge filter feature is similar to the IP filter feature but operates at a lower protocol level While IP filter rules act on IP data packets known as layer 3 data bridge filter rules act on Ethernet and similar packets often referred to as layer 2 or MAC layer data f The blocked protocols featur...

Страница 140: ...s the criteria established in a rule the packet can either be accepted forwarded towards its destination or denied discarded depending on the action specified in the rule Viewing Your IP Filter Configuration To view your current IP filter configuration log into Web Configuration click the Services tab and then click IP Filter in the task bar The IP Filter Confirmation page displays Figure 59 IP Fi...

Страница 141: ...face are subject to the most restrictive set of firewall protections defined in the software Typically the global setting for public interfaces is Deny so that all accesses to your LAN initiated from external computers are denied discarded at the public interface except for those allowed by a specific IP filter rule o A private interface connects to your LAN such as the Ethernet interface Packets ...

Страница 142: ...an IP filter rule you set various criteria that must be met in order for the rule to be invoked Use these instructions to add a new IP filter rule Also refer to the examples on page 147 1 On the IP Filter Configuration page click The IP Filter Rule Add page displays Figure 60 IP Filter Rule Add Page ...

Страница 143: ...he examples on page 147 for suggestions on choosing the appropriate interface for various rule types In Interface The interface from which packets must have been forwarded to the interface specified in the previous selection This option is valid only for the outgoing direction Log Option When Enabled is selected a log entry will be created on the system each time this rule is invoked The log entry...

Страница 144: ... rule to be invoked on packets containing any any source IP address lt any source IP address that is numerically less than the specified address lteq any source IP address that is numerically less than or equal to the specified address gt any source IP address that is numerically greater than the specified address eq any source IP address that is numerically equal to the specified address neq any ...

Страница 145: ...ntify the type of traffic that the computer or server can handle and are specified by the Internet Assigned Numbers Authority IANA For example port number 80 indicates a Web server 21 indicates an FTP server You can choose a port type by name from the drop down lists or if not available in the list specify the IANA port number in the text boxes Select Any other port if this criteria will not be us...

Страница 146: ...will be applied to packets whether or not they contain fragments assuming that they match the other criteria IP Option Pkt Determines whether the rule should apply to IP packets that have options specified in their packet headers o Yes The rule will be applied only to packets that contain header options o No The rule will be applied only to packets that do not contain header options o Ignore Defau...

Страница 147: ...w the instructions on page 46 to commit them IP filter rule examples Example 1 Blocking a specific computer on your LAN from accessing Web servers on the Internet 1 Add a new rule for outgoing packets on the ppp 0 interface from any incoming interface this would include the eth 0 and usb 0 interfaces for example 2 Specify the source IP address of the computer you want to block 3 Specify the Protoc...

Страница 148: ...ets were accepted or denied Display the IP Filter Configuration page and then click in the row corresponding to the rule The IP Filter Rule Statistics page displays Figure 61 IP Filter Rule Statistics Page You can click to reset the count to zero and to display newly accumulated data Managing Current IP Filter Sessions When two computers communicate using the IP protocol an IP session is created f...

Страница 149: ...CP UDP IGMP etc I F The interface on which the IP filter rule is effective IP Address The IP addresses involved in the communication The first one shown is the initiator of the communication Port The hardware addresses of the ports involved in the communication In Out Rule Index The number of the IP filter rule that applies to this session assigned when the rule was created In Out Action The actio...

Страница 150: ...es specify which bits of the packet are to be examined and what criteria those bits must meet in order to qualify as a match for the rule When a packet matches a rule it can either be accepted forwarded towards its destination or denied discarded depending on the action specified in the rule Note Bridge filters can be used when the unit is configured in either bridge or router mode Configuring Glo...

Страница 151: ...hose specifically accepted by a bridge filter rule Do not select CallMgt option it is for manufacturer use only Adding Bridge Filter Rules Adding and enabling a new bridge filter rule is a multi step process f First you add the rule which defines general information such as the rule number the direction of traffic it applies to and the action to be taken when a match is detected f Next you add one...

Страница 152: ...erface criteria is set to ppp 0 then the In Interface could be set to usb 0 This specifies that the rule applies only to packets passed from the USB computer through the router s PPP interface This option is valid only for rules defined for the outgoing direction Action Specifies what the rule will do to a packet when the packet matches the rule criteria The action can be Accept forward to destina...

Страница 153: ...ent from the main rule number The bridge filter processes subrules in sequential order if a packet fails to match the criteria of any subrule then the rule will not be invoked and bridge filter processing will continue to the next rule Offset The number of bits into a packet starting from a designated location where the subrule comparison should begin Offset from The location in a Layer 2 packet w...

Страница 154: ... in both fields otherwise enter a value only in the Lower Value field 7 When you are finished entering criteria and are ready to make this subrule effective you can click the Enable radio button at the top of the Bridge Filter Subrule Add page and then click You could also leave it disabled and edit the subrule to enable it later A page displays to confirm your changes 8 Click to return to the Bri...

Страница 155: ...ter Rule Example The following instructions create a rule for preventing Telnet access to the device from a specific WAN interface 1 Add rule 100 with the following settings f Interface ppp 0 f Direction Incoming f Action Accept 2 Click the Enable radio button at the top of the Bridge Filter Rule Add page and then click 3 Add subrule 1 with the following settings f Offset 2 f Offset from TCP Heade...

Страница 156: ...are preconfigured by the ISP these rules and related statistics can be viewed but not otherwise accessed via the Web based interface Viewing Rule Statistics You can view statistics for each rule and total statistics for all rules f To view statistics for an individual rule click in the corresponding Action s column on the Bridge Filter Configuration page The Bridge Filter Rule Stats page reports t...

Страница 157: ... the Services tab and then click Blocked Protocols in the task bar The Blocked Protocols page displays Figure 66 Blocked Protocols Page WARNING Blocking certain protocols may disrupt or disable your network communication or Internet access If you are unfamiliar with how your network or Internet connection uses these protocols contact your ISP before disabling The following list describes each of t...

Страница 158: ...k Packet Exchange A networking protocol used on Novell Netware based LANs BPDU Bridge Protocol Data Unit BPDUs are data messages that are exchanged across the switches between LANs that are connected by a bridge BPDU packets contain information on ports addresses priorities and costs and are exchanged across bridges to detect and eliminate loops in a network ARP Address Resolution Protocol Compute...

Страница 159: ...159 Part 5 Administrative Tasks and System Monitoring ...

Страница 160: ...ing System Status and Performing Diagnostics describes how to view information on system events and DSL line performance how to run the diagnostic utility to troubleshoot system problems and how to use the ping and traceroute utilities f Chapter 17 Upgrading the Software explains how to upgrade the system by uploading new software files f Chapter 18 Modifying Port Settings describes how to change ...

Страница 161: ...the following privilege levels to each additional login f Root level privileges enable users to modify all the features available in Web Configuration The default login has root level privileges f Intermediate level privileges enable users to change their own passwords They can also change the PPP interface username and password and the ATM VC interface values Note however that Intermediate users ...

Страница 162: ...haracters but cannot contain spaces or special characters The password can also be up to 128 characters Be sure to retype the password in the Confirm Password text box exactly as before including lowercase and uppercase characters 4 Click 5 If you want the changes to be permanent follow the instructions on page 46 to commit them You cannot change or delete the default login To delete a subsequentl...

Страница 163: ...nect to your ISP described in Chapter 5 1 From the User Configuration page click next to the login whose password you want to modify The User Config Modify page displays Figure 69 User Config Modify Page 2 Type your current password in the Old Password text box 3 Type your new password in both the New Password and Confirm New text boxes The password can be up to 128 ASCII characters long When logg...

Страница 164: ... Figure 70 Management Control Page The table on this page provides a check box to enable or disable HTTP i e Web browser based access to the configuration program through the WAN port In the Inactivity TimeOut text box you can specify a length of time in minutes after which external access will be blocked assuming that there is no access during that time If you want your changes to be in effect th...

Страница 165: ... defined as having either read only or read write privileges The data stored in the MIB includes the standard items defined for the SNMP protocol and custom items defined by the ISP The MIB contents are preconfigured by the ISP and cannot be managed via the Web based interface A complete SNMP setup includes the following items f A management station equipped with an SNMP manager client that enable...

Страница 166: ... SNMP Host Add Page 2 Enter the IP address of the host computer you want to add and click A page displays briefly to confirm the addition and the SNMP Add Host page redisplays 3 Continue adding hosts as required and click when done The newly added hosts now have access to the MIB with the privilege level associated with the community Viewing Hosts To view all hosts and the communities to which the...

Страница 167: ...roblems in the functioning of the system Viewing the Alarm Table To display the Alarm page log into the Web Configuration click the Admin tab and then click Alarm in the task bar The Alarm page is shown in Figure 73 Figure 73 Alarm Page Each row in the table displays the time and date that an alarm occurred the type of alarm and a brief statement indicating its cause You can click on the Refresh R...

Страница 168: ...essarily represent unexpected or improper functioning and is not captured by the system traps that create alarms This information accumulates and displays in a system log window To view the system log click the Admin tab and then click System Log in the task bar Figure 74 System Log page You can click to display a Windows File Download dialog box that enables opening or saving the contents of the ...

Страница 169: ...rop down list which you can configure In the DSL Status table the Operational Status setting displays a red orange or green ball to indicate that the DSL line is idle starting up or up and running respectively You can click to end the DSL connection To restart the connection you can click Although you generally will not need to view the remaining data it may be helpful when troubleshooting connect...

Страница 170: ...us table displays settings preconfigured by the product manufacturer or your ISP f The Config Data table lists various types of error and defects measurements found on the DSL line You cannot modify this data From the DSL Status page you can also click to display DSL line performance statistics Figure 77 DSL Statistics Page ...

Страница 171: ...the previous day At the bottom of the page the Detailed Interval Statistic table displays links you can click on to display detailed data for each 15 minute interval in the past 24 hours For example when you click on 1 4 data displays for the 16 intervals 15 minutes each that make up the previous 4 hours Figure 78 shows an example Figure 78 DSL Interval Statistics Page ...

Страница 172: ...he task bar The Diagnostics page displays Figure 79 Diagnostics Page 2 From the WAN Interface drop down list select the name of the WAN interface you want to test 3 Click The diagnostics utility runs a series of test to check whether the device s connections are up and working This takes only a few seconds and the results for each test are displayed on screen Pass Fail or Skipped A test may be ski...

Страница 173: ...s page provides a utility for executing ping Follow these steps 1 Display the WAN tab click Diagnostics in the task bar and click at the bottom of the Diagnostics page The Diagnostics Ping page displays Figure 80 Diagnostics Ping Page 2 In the Dest IP Address text boxes type the IP address of the computer you want to ping Or in the Dest Hostname text box type the domain name of the target site suc...

Страница 174: ...s with an ICMP message indicating that the packet has been discarded The receipt of this message enables the Ethernet Modem Router to determine f that the ping UDP packets reached the initial router and f the packet s approximate time in transit The traceroute utility then sends out packets with a TTL of 2 The First router that receives the packet reduces the TTL to 1 and routes the packet to the ...

Страница 175: ... needed Field Description Probe Message Type The traceroute can use ping UDP messages to conduct the traceroute Some routers in the path may not support one or the other method Try one and if not working try the other No of Probes per TTL The number of redundant packets that will be sent in each transmission to account for packets dropped due to connection or server problems Maximum hops The maxim...

Страница 176: ...stination it is dropped and the computer replies with an error message This error message is used to identify the completion of the traceroute This field specifies the invalid UDP port number to use This field is not used if the Probe Message Type is ping 4 Click to begin the trace The results display in the window at the bottom of the page and include the IP address of each router or computer rea...

Страница 177: ... Configuration to upload the file from the CD ROM drive or your PC s hard drive or shared network drive to system flash f On remote ISP server You can use Web Configuration download the file and load it to system flash Upgrading Using an Image Stored Locally Follow this procedure if you have obtained an updated image from your ISP and stored the file on your PC CD ROM or other media 1 Insert the m...

Страница 178: ...grade file is available by downloading from your ISP Contact your ISP to obtain the server and logon information required 1 Log into Web Configuration click the Admin tab and then click Remote Image Upgrade in the task bar The Remote Image Upgrade page displays Figure 83 Remote Image Upgrade Page Note If the page does not display a table as shown in Figure 83 but displays only the Upload button sk...

Страница 179: ...ements This configuration data becomes part of the software image You can extract configuration data from the software image and save it on your PC as a text file If you later change the system configuration but then want to revert to the previous settings you can load the configuration file back to the system This feature may be especially useful when you receive an image upgrade file from your I...

Страница 180: ...le click A Windows dialog box will display to enable you to select the file which must be named commitedcfg cfg from your PC or network Double click the file and then click The following message displays while the file is being uploaded Loading New Software Please do not interrupt the upgrade process The system will reboot soon Please open a new browser window to continue browsing When the system ...

Страница 181: ...rnet Modem Router s Port Numbers In some cases you may want to assign non standard port numbers to the HTTP and Telnet servers that are embedded on the Ethernet Modem Router The following scenario is one example in which changing the HTTP port number may be necessary You have an externally visible Web server on your LAN with a NAT rule RDR flavor that redirects incoming HTTP packets to that Web se...

Страница 182: ...t numbers contact them before making any changes here Follow these steps to modify port settings 1 Log into Web Configuration click the Admin tab and then click Port Settings in the task bar The Port Settings page is shown in Figure 85 Figure 85 Port Settings Page 2 Type the new port number s in the appropriate text box es and click The default port numbers are shown in Figure 85 You can enter non...

Страница 183: ...discovered that connection is used for the current session and the VPI VCI values are remembered for initial use the next time the modem starts up Autodetect Modes Autodetect can be used to establish PPPoE PPPoA IPoA 1577 and EoA connections and can be configured in either of two modes bridging mode and routing mode These modes are specific to the Autodetect feature and are configured in addition ...

Страница 184: ...valid connection until the modem is rebooted 5 Click A warning message will display to inform you that the current configuration will be lost 6 Click The modem will reboot and the Web interface will be temporarily unavailable Upon reboot Autodetect will begin searching for a valid VC and will create a PPP an EoA or an IPoA interface on your modem corresponding to the type of interface detected on ...

Страница 185: ...phone numbers For example a 7 digit telephone number starts with a 3 digit prefix that identifies a group of thousands of telephone lines and ends with four digits that identify one specific line in that group Similarly IP addresses contain two kinds of information f Network ID Identifies a particular network within the Internet or intranet f Host ID Identifies a particular computer or device on t...

Страница 186: ...determined easily from field1 field1 1 126 Class A field1 128 191 Class B field1 192 223 Class C field1 values not shown are reserved for special uses f A host ID can have any value except all fields set to 0 or all fields set to 255 as those values are reserved for special uses Subnet masks Definition mask A mask looks like a regular IP address but contains a pattern of bits that tells what parts...

Страница 187: ...he two extra bits in field4 can have four values 00 01 10 11 so there are four subnets Each subnet uses the remaining six bits in field4 for its host IDs ranging from 0 to 63 Note Sometimes a subnet mask does not specify any additional network ID bits and thus no subnets Such a mask is called a default subnet mask These masks are Class A 255 0 0 0 Class B 255 255 0 0 Class C 255 255 255 0 These ar...

Страница 188: ...ss over type cable to a stand alone PC If you connected the device to an ordinary hub port not Uplink you must use a straight through cable To check hold the connectors at each end of the cable side by side with the plastic spring facing down Looking at the wires from left to right if the first second third and sixth wires are the same color on the two connectors then it is a straight through type...

Страница 189: ...tivity with your ISP s DNS server Web Configuration Program I forgot lost my Web Configuration user ID or password If you have not changed the password from the default try using admin as both the user ID and password Otherwise you can reset the device to the default configuration by pressing the Reset button on the back panel of the device three times using a pointed object such as a pen tip Then...

Страница 190: ...ater bandwidth for supporting simultaneous users and a higher maximum speed 802 1x An IEEE protocol that specifies a sequence of messages and responses for authentication exchanges occur among ends user stations attempting to log on to a network the network node that handles such requests and an authentication server that stores user authentication data See also authentication server and RADIUS ac...

Страница 191: ...ications technology that can send different types of data over the same medium DSL is a broadband technology broadcast To send data to all computers on a network DHCP Dynamic Host Configuration Protocol DHCP automates address assignment and management When a computer connects to the LAN DHCP assigns it an IP address from a shared pool of IP addresses after a specified time limit DHCP returns the a...

Страница 192: ...et filtering and Network Address Translation services FTP File Transfer Protocol A program used to transfer files between computers connected to the Internet Common uses include uploading new or updated files to a web server and downloading files from a web server hop When you send data through the Internet it is sent first from your computer to a router and then from one router to another until i...

Страница 193: ...al Area Network A network limited to a small geographic area such as a home office or small building LED Light Emitting Diode An electronic light emitting device The indicator lights on the front of the Ethernet Modem Router are LEDs MAC address Media Access Control address The permanent hardware address of a device assigned by its manufacturer MAC addresses are expressed as six pairs of character...

Страница 194: ...n IP address is online It can also be used to reveal the IP address for a given domain name port A physical access point to a device such as a computer or router through which data flows into and out of the device PPP Point to Point Protocol A protocol for serial data transmission that is used to carry IP and other protocol data between your ISP and your computer The WAN interface on the Ethernet ...

Страница 195: ...ed to the rest of the parent network but they are treated as though they were on a separate network See also network mask subnet mask A mask that defines a subnet See also network mask supplicant In the 802 1x protocol a device that attempts to log on to a network by providing authentication information which is compared to information stored on an authentication server TCP IP Transmission Control...

Страница 196: ...rom the user to the Internet USB Universal Serial Bus A serial interface that lets you connect devices such as printers scanners etc to your computer by simply plugging them in The Ethernet USB combo router is equipped with a USB interface for connecting to a stand alone PC VC Virtual Circuit A connection from your ADSL2 Ethernet Modem Router to your ISP VCI Virtual Circuit Identifier Together wit...

Страница 197: ...ridge filters 150 Bridge forwarding table 76 Bridgeable interfaces 79 82 83 85 Bridged Internet connection configuring 82 Bridge Router AutoSense BRAS 85 Bridges overview 76 Bridging 191 special features 84 Broadband 191 Broadcast 191 Commit Reboot page 46 Computers configuring IP information 22 Configuration Manager overview 38 troubleshooting 189 Data packet 117 Date and time changing 43 Default...

Страница 198: ...Modem Setup Wizard Welcome page 28 DSL Parameters page 170 DSL Statistics page 170 DSL Status page 169 Dynamically assigned IP addresses 93 EOA defined 67 EOA interface 91 EOA Interface Add page 69 EOA page 67 Eth 0 interface defined 36 Ethernet defined 192 Ethernet cable 20 straight through vs crossover 188 Features 17 Filter NAT flavor 131 Filtering rule 192 Firewall 192 settings 136 Firewall Bl...

Страница 199: ... IP information configuring on LAN computers 22 IP Route Add page 110 IP Route Table page 108 IP routes adding 110 manually configuring 108 type 109 IP Routes defined 106 IPoA Interface Add page 74 IPoA Interface Global Map page 75 IPoA Interface Map page 75 IPoA page 72 ISP 193 LAN 193 LAN Configuration page 53 LAN interface configuring multiple 92 LAN IP address 51 53 specifying 52 viewing 91 LA...

Страница 200: ...ork classes 186 Network ID 185 Network interface card 17 Network mask 194 in DHCP address table 99 Network mask 186 NIC 194 Notational conventions 14 Operating mode scenarios 81 Operating modes as displayed in the System View table 78 overview 76 ZIPB 86 Packet 194 Packets filtering 140 Pages Alarm 167 ATM VC Add 59 60 ATM VC Configuration 58 Autodetect 184 Backup Restore Config 179 Blocked Protoc...

Страница 201: ...stics 122 NAT Translations 123 NAT Translations Details 124 Port Settings 182 PPP Detail 64 PPP Configuration 61 PPP Interface Add 66 Quick Configuration 33 Remote Image Upgrade 178 RIP Configuration 112 RIP Global Statistics 114 SNMP Host Add 166 System Log 168 System Mode 80 System Modify 44 User Config Add 162 User Config Modify 163 User Configuration 161 Parts checking for 18 PASS NAT flavor 1...

Страница 202: ...rades 177 Stateful inspection 145 Static IP addresses 27 Statically assigned IP addresses 93 Storing an image 179 Submitting vs committing 46 Subnet 195 defined 97 Subnet mask See Network mask Subnet masks 186 System Modify page 44 System Log page 168 System Mode page 80 System requirements for Configuration Manager 38 System requirements 17 TCP IP 195 Telnet port modifying address 181 Testing set...

Страница 203: ... 196 WAN interface configuring multiple 92 IP address 91 WAN to WAN bridging configuring 84 Web browser requirements 17 Web browser requirements 38 Web browsers compatible versions 38 Windows NT configuring IP information 26 ZIPB mode configuring 86 ...

Страница 204: ...ET PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE THE CUSTOMER S SOLE REMEDY SHALL BE AT TRENDNET S OPTION REPAIR OR REPLACEMENT THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TRENDNET NEITHER ASSUME...

Страница 205: ...Index 205 ...

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