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IP5020
Internet Access Server
User's Guide
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P/N: 9590C50101
FCC Statement:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation.
CE Marking Warning
This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. Copyright (c) 2000. All Rights Reserved. Document Version: 1.1
All trademarks and trade names are the properties of their respective owners.
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TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION ....................................................................... 1 IP5020 Features........................................................................................... 1 LAN Features ......................................................................................... 1 Internet Access Features......................................................................... 1 Configuration & Management ............................................................... 2 Advanced Functions............................................................................... 2 Security Features .................................................................................... 2 Package Contents ........................................................................................ 3 IP5020 Internet Access Server ................................................................... 3 Components............................................................................................ 3 LED Table.............................................................................................. 4 DIP Switches.......................................................................................... 4 CHAPTER 2 INSTALLATION ........................................................................ 6 Procedure..................................................................................................... 6 Requirements.......................................................................................... 6 Procedure ............................................................................................... 6 CHAPTER 3 CONFIGURATION .................................................................... 7 Overview ...................................................................................................... 7 Configuration Program .............................................................................. 8 Preparation ............................................................................................. 8 Connecting to the IP5020....................................................................... 8 Home Screen................................................................................................ 9 LAN Port Configuration .......................................................................... 10 Data - LAN Port ................................................................................... 10 WAN Port Configuration ......................................................................... 12 Direct Connection Screen..................................................................... 12 PPPoE Screen....................................................................................... 14 Status Screens............................................................................................ 15 WAN Status - Direct Connection ........................................................ 15 WAN Status - PPPoE .......................................................................... 16 Device/LAN Status Screen................................................................... 18 CHAPTER 4 PC CONFIGURATION............................................................ 20 www..com If you have a Router ................................................................................. 20 If you use DHCP ....................................................................................... 20 No Router, no DHCP ................................................................................ 20 IP Address ............................................................................................ 20 Network Mask...................................................................................... 20 Gateway................................................................................................ 20 DNS (Domain Name Server) Address ................................................. 21 Operation - Internet Access ..................................................................... 21 Accessing AOL .......................................................................................... 21 CHAPTER 5 DHCP.......................................................................................... 22 Overview .................................................................................................... 22 What DHCP Does ..................................................................................... 22 Checking if your PC uses DHCP ............................................................. 23 Checking your DHCP Server................................................................... 24 Using the IP5020's DHCP Server ............................................................ 25 To Configure your PCs to use DHCP .................................................. 25 CHAPTER 6 ROUTING.................................................................................. 27 Overview .................................................................................................... 27 IP5020 Configuration ............................................................................... 27 Routing Table Data .............................................................................. 27 i
Router Configuration ............................................................................... 28 Local Router......................................................................................... 28 Other Routers on the Local LAN ......................................................... 28 Routing Example....................................................................................... 29 For the IP5020's Routing Table............................................................ 29 For Router A's Default Route............................................................... 29 For Router B's Default Route ............................................................... 29 CHAPTER 7 DEVICE OPTIONS .................................................................. 30 Overview .................................................................................................... 30 Device Password........................................................................................ 30 NAT (Network Address Translation)...................................................... 31 CHAPTER 8 ADVANCED INTERNET ........................................................ 32 Overview .................................................................................................... 32 Advanced Internet Screen ........................................................................ 32 Special Applications.................................................................................. 33 Special Applications Screen................................................................. 33 Using a Special Application................................................................. 33 Configuration Data (from Service Provider)........................................ 34 Virtual Servers .......................................................................................... 35 IP Address seen by Internet Users........................................................ 35 Types of Virtual Servers ...................................................................... 35 Virtual Server Configuration................................................................ 36 User Defined Virtual Servers ............................................................... 37 Connecting to the Virtual Servers ........................................................ 38 Using this Device as a Virtual Web Server.......................................... 38 Exposed Computer.................................................................................... 39 Configuring the Exposed Computer..................................................... 39 Data ...................................................................................................... 39 CHAPTER 9 ACCESS CONTROL ................................................................ 41 Overview .................................................................................................... 41 Security Groups ........................................................................................ 42 Operations ............................................................................................ 42 Data ...................................................................................................... 43 Workstations ............................................................................................. 44 Operations ............................................................................................ 44 www..com Data ...................................................................................................... 44 Administrator Defined Filters.................................................................. 45 Data ...................................................................................................... 45 APPENDIX A TROUBLESHOOTING.......................................................... 47 Overview .................................................................................................... 47 General Problems...................................................................................... 47 Internet Access .......................................................................................... 47 APPENDIX B SPECIFICATIONS ................................................................. 49 IP5020 Internet Access Server ................................................................. 49
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Internet
This Chapter provides an overview of the IP5020's features and capabilities. Congratulations on the purchase of your new IP5020 Internet Access Server. The IP5020 will allow multiple LAN users to share an Internet user account, via an DSL or Cable modem. Once the IP5020 is installed and configured, the Internet is just a click away.
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Figure 1: Office to Internet Alternatively, the IP5020 Internet Access Server can be used to connect your local LAN to a remote LAN or WAN, via the IP5020's WAN port.
IP5020 Features
The IP5020 incorporates many advanced features, carefully designed to provide sophisticated functions while being easy to use.
LAN Features
* Dual Ethernet www..comports. The IP5020 has 2 Ethernet ports. One (the LAN port) is used to connect to your local LAN. The other (the WAN port) is used to connect to an external LAN, WAN or the Internet. (Internet access requires an DSL or Cable modem.) dynamic IP address to PCs and other devices upon request. The IP5020 can act as a DHCP Server for devices on your local LAN. *
*
DHCP Server Support. Dynamic Host Configuration Protocol provides a
DHCP Client Support. On the WAN port, the IP5020 can act as a DHCP
Client. This allows the use of dynamic IP Addresses on the "External LAN" or WAN.
*
Multi Segment LAN Support. LANs containing one or more segments
are supported, via the IP5020's built-in static routing table. If NAT (Network Address Translation) is disabled, the IP5020 will function as a static router.
Internet Access Features
*
Shared Internet Access. All users on the LAN can access the Internet
through the IP5020, using only a single external IP Address. The local (invalid) IP Addresses are hidden from external sources. This process is called NAT (Network Address Translation). 1
IP5020 User Guide
*
PPPoE Support. Connect to your ISP using PPPoE (PPP over Ethernet),
if your ISP uses this method.
Configuration & Management
* *
Easy Setup. Use your WEB browser from anywhere on the LAN for
configuration.
Remote Management. The IP5020 can be managed from a workstation
anywhere on the LAN, using a WEB browser.
Advanced Functions
* * *
Virtual Servers. This feature allows Internet users to access Internet servers on your LAN. The required setup is quick and easy. User-Defined Virtual Servers. Internet users can access non-standard
Internet Servers on your LAN by using this feature.
Special Internet Applications. Internet applications such as Internet
Videoconferencing, Telephony, Games Servers, and other special-purpose Servers are supported.
*
Exposed Computer. One (1) PC on your local LAN can be exposed to the
Internet. This allows unrestricted 2-way communication between this PC and servers or users on the Internet.
Security Features
* * *
Configuration Data. Optional password protection is provided to prevent
unauthorized users from modifying the configuration.
Access Control Features. The LAN Administrator can limit Internet and E-Mail access by individual workstations.
Firewall Protection. All incoming data packets are monitored and all incoming server requests are filtered, thus protecting your network from www..com malicious attacks from external sources. (This protection is lost if NAT is disabled.)
)LUHZDOO3URWHFWLRQ The firewall protection provided by the IP5020 is an intrinsic side effect of NAT (Network Address Translation). All users on the LAN share a single external IP address. From the external viewpoint, there is no network, only a single device. For internal users, the IP5020 acts as a "transparent proxy server", translating the multiple internal IP addresses into a single external IP address. For external requests, any attempt to connect to local resources are blocked. The IP5020 will not "reverse translate" from a global IP address to a local IP address. This type of "natural" firewall provides an impregnable barrier against malicious attacks.
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Introduction
Package Contents
The following items should be included: * * * * The IP5020 Unit Power Adapter Quick Installation Guide CD-ROM containing the on-line manual.
If any of the above items are damaged or missing, please contact your dealer as soon as possible.
IP5020 Internet Access Server
Data/Status (LAN)
Data (WAN)
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Components
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LED Link Indicator (WAN Port) WAN port (10BaseT) LAN port (Auto-sensing 10/100BaseT) LED Link Indicator (LAN Port) Reset Button
Flashes when data is transmitted or received. Connect the 10BaseT cabling (RJ45 connector) for the External LAN, WAN, or DSL/Cable Modem here. Connect the LAN cable (RJ45 connectors) from this port to a 10BaseT or 100BaseT hub. Flashes when data is transmitted or received. Used to reset (reboot) the IP5020.
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IP5020 User Guide
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Power port (12V) WAN Data LED
Connect the power adapter here. This will flash during normal operation, when data is transmitted or received through the WAN port. During normal operation, this will flash in Green. Orange indicates an error. See the following LED Table for more information. Refer to DIP Switches on page 4.
LAN Data/Status LED DIP switches
LED Table
The Data/Status LED will flash in GREEN during normal operation, as data is transmitted or received through the LAN port. YELLOW indicates an error. Possible LED states are shown below. LAN Data/Status LED On (Orange, then Green) On (Green) Flashing (Green) WAN Data LED On Description Normal start up (power ON) sequence.
On Flashing
Idle. Normal Operation. The Data/Status LED will flash when data is transmitted or received through the LAN port. The Data LED will flash when data is transmitted or received through the WAN port. Hardware error. Contact your dealer for technical support.
Flashing
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Green, Orange, Green, ...
DIP Switches
DIP Switch Setting Description Normal Operation DHCP Server function disabled. Restore Default IP Address and clear Password (See below) Normal Operation.
A B C D
1=off 2=off 1=off 2=on 1=on 2=off 1=on 2=on
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Introduction
Restore Default IP Address and Clear Password
If the IP5020's IP Address or password is lost, the following procedure can be used to recover from this situation. 1. Turn the power to the IP5020 OFF. 2. Set the DIP switches to position "C" in the table above. 3. Turn the power to the IP5020 ON. 4. Operate DIP switch 1 in the following sequence (you have 15 seconds to complete the sequence): * * 5. OFF ON
* OFF The IP5020 will now reset, and the Yellow LED flash. The following changes will have been made. (Other configuration data is unchanged.) * * IP Address set to its default value of 192.168.0.1 Network Mask set to 255.255.255.0
6.
* The password cleared (no password). You can now connect to the IP5020 and make any configuration changes required.
If the DIP switches are simply left at position "C", the IP5020 will function normally.
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This Chapter explains how to install the IP5020 in your LAN.
Procedure
This section explains how to install the IP5020 Internet Access Server in your existing TCP/IP network.
Requirements
* * Ethernet Network employing 10BaseT and the TCP/IP protocol. For Internet Access, an DSL or Cable modem, and an Internet Access account with a local ISP (Internet Service Provider).
Procedure
1. Choose an Installation Site
Select a suitable place on the network to install the IP5020.
2. Connect LAN Cable
Connect a 10BaseT cable from a Hub on your LAN to the LAN port on the IP5020.
3. Connect WAN Cable
Connect the 10BaseT cable from the external LAN, WAN, or DSL/Cable modem to the WAN port on the IP5020.
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4. Connect Power Adapter
Connect the IP5020's power adapter to the IP5020 and power it ON. Only use the power adapter provided. Using a different one may cause hardware damage.
5. Check the LEDs
When the IP5020 is powered On, the Data/Status LED should flash Orange, then turn Green. If it stays Orange, there is a hardware problem. For more information on the LEDs, refer to LED on page 4.
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This Chapter provides details of the configuration process.
Refer to: Chapter 4: PC Configuration Chapter 5: DHCP Chapter 6: Routing Chapter 7: Device Options Chapter 8: Advanced Internet Features
Overview
This chapter describes the configuration and checking of the LAN and WAN ports. PCs on your local LAN may also require configuration. For details, see Chapter 4 - PC Configuration. Also, if you are using DHCP, please read Chapter 5 DHCP. Other IP5020 configuration may also be required, depending on which features and functions of the IP5020 you wish to use. Use the table below to locate detailed instructions for the required functions. To Do this: Configure PCs on your internal LAN. Use DHCP on the internal LAN Configure the IP5020 and routers for a LAN which has 1 or more routers. Set a password for the IP5020, or disable NAT (Network Address Translation). Use any of the following features: * * * Special Internet Applications Virtual Servers Exposed Computer Chapter 9: Access Control
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Limit Internet Access by individual workstations
Where use of a certain feature requires that PCs or other LAN devices be configured, this is also explained in the relevant chapter.
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IP5020 User Guide
Configuration Program
The IP5020 contains a HTTP server. This enables you to connect to it, and configure it, using your Web Browser. Most Browsers should work, provided they support HTML tables and forms.
Preparation
Before attempting to configure the IP5020, please check the following: * * Since configuration uses the LAN connection, the IP5020 must be installed and powered ON. If the IP5020's default IP Address (192.168.0.1) is already used by another device, the other device must be turned OFF until the IP5020 is allocated a new IP Address during configuration.
Connecting to the IP5020
To establish a connection from your PC to the device: 1. Start your WEB browser. 2. In the Address box, enter "HTTP://" and the IP Address of the IP5020, as in the following example: HTTP://192.168.0.1 3. You should then see the Home screen. Select the desired option from the navigation bar.
If you can't connect
If the IP5020 does not respond, check the following: * * * The IP5020 is properly installed, LAN connections are OK, and it is powered ON. Ensure that your PC and the IP5020 are on the same network segment. (If you don't have a router, this must be the case.) Ensure that your PC is using an IP Address within the range 192.168.0.2 to 192.168.0.254 and thus compatible with the IP5020's default IP Address of 192.168.0.1. Also, check that the Network Mask is set to 255.255.255.0 In Windows, the IP Address can be checked by using Control Panel-Network to check the Properties for the TCP/IP protocol.
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Configuration
Password
If a password has be set for the device, you will be prompted for the password, as shown below.
Figure 3: Password Dialog * * Leave the "User Name" blank. Enter the password for this device, if one has been set.
If no password has been set, this dialog will not appear. Instead, you will immediately see the Home screen, which contains helpful information for first-time users.
Navigation & Data Input
Most screens contain a navigation bar on the left of the screen allows you to move about. You can also use the "Back" button on your Browser.
Changing to another screen without clicking "Save" does NOT save any changes you may have made. HTML uses "forms based input"; you must submit (save) the form or your data will be ignored.
Home Screen
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The Home screen is shown below. No data can be input from this screen.
Figure 4: Home Screen
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IP5020 User Guide
Note that the navigation bar contains a Help button. Context-sensitive help is available from each screen. From this screen, the Help file provides links to all help files.
LAN Port Configuration
To configure the LAN port, select Device - LAN Port. You will see a screen like the example below.
Figure 5: LAN Port
Data - LAN Port
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For most users, the default values for these fields should be satisfactory.
Data - Internal LAN
Device IP Address IP address for the IP5020. Use the default value of 192.168.0.1 unless the address is already in use or your LAN is using a different IP address range. In the latter case, use an IP Address from within the range used by your LAN. The default value 255.255.255.0 is standard for small (class "C") networks. For other networks, use the Network Mask for the LAN segment to which the IP5020 is attached. i.e. the same value as the PCs on that LAN segment.
Network Mask
Data - DHCP Server
A DHCP (Dynamic Host Configuration Protocol) server provides a valid IP address (and the Gateway and DNS addresses) to a DHCP client (PC or device) upon request. The IP5020 can act as a DHCP server. 10
Configuration
To use this feature: * * The IP5020 must be configured with the following data. The PCs must be configured to act a DHCP clients. This procedure is explained in Chapter 5 - DHCP. Operation If Enabled, the IP5020 will function as a DHCP server. The default value is Enabled. If you already have a DHCP Server, this must be DISABLED. Start IP Address Finish IP Address The IP Start Address and IP Finish Address fields set the values used by the DHCP server. This range also determines the number of DHCP clients supported. (Maximum number of clients is 253.) DNS (Domain Name Server) IP Addresses Enter at least 1 DNS. Your ISP should recommend a DNS. If they don't, you can copy the public DNS entry from DNS (3) to DNS (1) Multiple DNS entries should be entered in the order you want them accessed. (The first available DNS will be used.)
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IP5020 User Guide
WAN Port Configuration
Data on the WAN port screen is used to identify this device to the remote LAN. The IP Address seen by the remote LAN is different to the IP Address on the local LAN. To configure the WAN port, first select the appropriate connection type (Direct Connection or PPPoE) on the Device screen (below) and then click the "Configure" button.
Figure 6: Device Screen Tip: If your connection documentation does not refer to PPPoE, select Direct Connection.
Direct Connection Screen
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Figure 7: WAN Port - Fixed Connection
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Configuration
* * Note that if IP Address entries are shown when DHCP Client is selected, then these values were supplied by the DHCP server on the remote LAN. The Retrieve Defaults button will recover the default Device Name and clear the other items. After clicking this button, you must click Save to restore the default values to the IP5020.
Data - WAN Port
Device Name Used for identification. Normally, there is no need to change the default name, but if your ISP requests that you use a particular name, enter it here. This name will be provided to, and recorded by, the remote DHCP Server. If your ISP asks for the Network Adapter Address, Physical Address, Hardware Address, or MAC Address for the PC the DSL/Cable modem is connected to, provide this value. Leave this enabled if you want the IP5020 to be allocated an IP Address by the DHCP server on the remote LAN, WAN, or ISP account. If this is enabled, the IP Address information below is NOT required. Select this if using a fixed IP Address. If this option is selected, the following data must be entered. * IP Address. If connecting to an ISP, this is the address allocated by the ISP. If connecting to another LAN, this must be a valid address on the external LAN. Network Mask This must be compatible with the IP Address above Gateway IP Address The address of the router or gateway, either on the external LAN, or supplied by your ISP.
Hardware (MAC) Address
DHCP Client
Fixed IP Address
* *
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IP5020 User Guide
PPPoE Screen
Figure 8: WAN Port - PPPoE These settings must be correct in order to complete the remote connection. This data is provided by your ISP (Internet Service Provider).
Data - PPPoE Screen
Account/User Name Password Verify Password IP Address provided by ISP
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The name of the Internet account provided by your ISP. Enter the password for the above account. Re-enter the password, to ensure it is correct. Normally, this is Dynamic; use this setting if your ISP's data does not mention an IP Address. If your ISP did provide an IP Address, select Fixed and enter the value they provided. Normally, this should be Enabled. If disabled, you must use the Connect button on the Status screen to establish a connection. If an connection is inactive for longer than this time period, it will be terminated. * Save - save any data you have entered on this screen. Remember to save before changing to another screen. Cancel - cancel any data you have entered since the last "Save" operation.
Connect on Demand
Idle Time-out Buttons
*
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Configuration
Status Screens
Clicking Status on the menu bar will take you to the WAN Status screen. The screen shown will depend on whether you are using a Fixed Connection or PPPoE. In either case the screen contains a hyperlink to jump to the Device/LAN Status screen.
WAN Status - Direct Connection
Figure 9: WAN Status - Direct Connection
Data
Physical Address IP Address www..com The "Hardware" address of this device, as seen by other devices on the external LAN or WAN The IP Address of this device, as seen by devices on the WAN. (This device has 2 IP Addresses; one for the local LAN, and another for the WAN port.) The Network Mask for the above IP Address. IP address of the Router/Gateway on the External LAN or WAN. Displays "Enabled" or "Disabled", indicating whether this device is acting as a DHCP client on the external LAN or WAN. * Reconnect - use this button if the connection seems to have been lost, and no data is being transferred. (This button has no effect unless acting as a DHCP Client.) Refresh - Update the data on screen.
Network Mask Default Gateway DHCP Client
Buttons
*
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IP5020 User Guide
WAN Status - PPPoE
Figure 10: WAN Status - PPPoE
Data
Physical Address IP Address The hardware address of this device. The IP Address of this device, as seen by devices on the WAN. (This device has 2 IP Addresses; one for the local LAN, and another for the WAN port.) The Network Mask for the above IP Address. This indicates whether or not the connection is currently established. If the connection does not exist, the Connect button can be used to establish a connection. If the connection currently exists, the Disconnect button can be used to break the connection.
Network Mask
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PPPoE Link Status
Log
* * * The Connection Log shows status messages relating to the existing connection. The most common messages are listed in the table below. The Clear Log button will restart the Log, while the Refresh button will update the messages shown on screen. Message Connect on Demand Manual connection 16 Description Connection attempt has been triggered by the "Connect on Demand" setting. Connection attempt started by the "Connect" button.
Configuration
Reset physical connection Connecting to remote server Remote Server located Start PPP PPP up successfully Idle time-out reached Disconnecting Preparing line for connection attempt. Attempting to connect to the the ISP's server. ISP's Server has responded to connection attempt. Attempting to login to ISP's Server and establish a PPP connection. Able to login to ISP's Server and establish a PPP connection. The connection has been idle for the time period specified in the "Idle Time-out" field. The connection will now be terminated. The current connection is being terminated, due to either the "Idle Time-out" above, or "Disconnect" button being clicked. ISP's Server did not respond. This could be a Server problem, or a problem with the link to the Server. Unable to establish a PPP connection with the ISP's Server. This could be a login problem (name or password) or a Server problem. The existing connection has been lost. This could be caused by a power failure, link failure, or Server failure. The data received from the ISP's Server could not be processed. This could be caused by data corruption (from a bad link), or the Server using a protocol which is not supported by this device.
Error: Remote Server not found Error: PPP Connection failed Error: Connection to Server lost Error: Invalid or unknown packet type
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Buttons and Links
* * * * * Connect - If not connected, establish a connection to your ISP. Disconnect - If connected to your ISP, hang up the connection. Clear Log - Delete all data currently in the Log. This will make it easier to read new messages. Refresh - Contact this device and update the Log data. Device/LAN Status - Use this link to jump to the "Device/LAN Status" screen.
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IP5020 User Guide
Device/LAN Status Screen
The Device/LAN Status screen can be reached via the Device/LAN status hyperlink on the WAN Status screen. An example screen is shown below.
Figure 11: Status Screen
Device
Firmware Version Hardware ID Network Address www..com Translation Version of the firmware (embedded software, including this program) which is currently installed. The hardware ID of this device, used by the manufacturer. This will display "Enabled" or "Disabled".
LAN Port
Physical Address IP Address Network Mask DHCP Server The "Hardware" address of this device, as seen by other devices on the Internal LAN. The IP Address of this device, as seen by other devices on the Internal LAN. The Network Mask for the IP Address above. This shows the status of the DHCP Server function. The value will be "Enabled" or "Disabled".
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Configuration
DHCP Table
This table will be empty unless the DHCP Server function is being used. If it is being used, this table lists the devices on the local LAN which have been allocated IP Addresses by the DHCP server function. Only IP Addresses in use will be listed. IP Address Physical Address Status The IP Address which has been allocated by the DHCP server to the other device. The Physical Address (Hardware Address) of the device which has been allocated a IP Address. Possible Status values are "Leased" (the IP Address is allocated to the device shown) or "Reserved" (the IP Address is not available).
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This Chapter details the PC Configuration required on the local ("Internal") LAN.
If you have a Router
If your If your LAN contains 1 or more Routers, do NOT change any TCP/IP settings on your PCs unless advised to do so by your LAN Administrator.
The Router itself must be configured. Refer to Chapter 6 - Routing for details.
If you use DHCP
If you are already using DHCP, no PC configuration is required. However, you should check the DHCP Server configuration, as described in Checking your DHCP Server on page 24. Also, the DHCP Server function in the IP5020 should be turned OFF. This setting is on the Internal LAN Port screen. If you are not using DHCP, but wish to do so, refer to Using the IP5020's DHCP Server on page 25.
No Router, no DHCP
If your LAN is NOT using DHCP and does NOT contain a router, check the following settings for each PC:
IP Address www..com
Ensure that the IP Address for each PC is unique, and is from the same address range as the IP5020's Device IP Address, as set on the LAN Port screen. For example, if the IP5020 uses the default IP Address (192.168.0.1) and Network Mask (255.255.255.0), the PCs must use addresses from 192.168.0.2 to 192.168.0.254.
Network Mask
All PCs, and the IP5020, need to be using the same value for the Network Mask. The default value is 255.255.255.0. On the IP5020, this value is set on the LAN Port screen.
Gateway
Set the Default Gateway Address to the IP5020's IP address (Device IP Address, as set on the LAN Port screen). The default IP Address is 192.168.0.1.
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PC/LAN Configuration
DNS (Domain Name Server) Address
This should match the DNS address entered into the DNS IP Address field on the LAN Port screen.
Operation - Internet Access
If you are using the IP5020 for Internet access: * * Ensure that the DSL modem, Cable modem, or other permanent connection is functional. Configure your Browser and E-Mail client to use Internet Access via the LAN, rather than a Dial-up connection. In Windows 95, select Start Menu Accessories - Internet Tools. The Wizard called Get on the Internet or Connection Wizard can be used to set or change your Internet access method. Then simply use your Browser, FTP client, or other Internet client to connect to the desired Internet site.
*
Accessing AOL
To access AOL (America On Line) through the IP5020, the AOL for Windows software must be configured to use TCP/IP network access, rather than a dial-up connection. The configuration process is as follows: * * * * Start the AOL for Windows communication software. Ensure that it is Version 2.5, 3.0 or later. This procedure will not work with earlier versions. Click the Setup button. Select Create Location, and change the location name from "New Locality" to "IP5020". Click Edit Location. Select TCP/IP for the Network field. (Leave the Phone Number blank.) Configuration is now complete. * Before clicking "Sign On", always ensure that you are using the "IP5020" location.
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This Chapter covers the use of DHCP, using either an existing DHCP Server or the IP5020's DHCP Server function.
Overview
If your (internal) LAN does not use DHCP, and you do not wish to use DHCP, you can ignore this chapter.
What DHCP Does
A DHCP (Dynamic Host Configuration Protocol) server allocates a valid IP address to a DHCP client (PC or device) upon request. * * * * The client request is normally made when the client device boots. The DHCP Server provides the Gateway and DNS addresses to the client, as well as allocating an IP Address. Windows 95 includes all the software required to act as a DHCP client. The IP5020 can act as a DHCP server.
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DHCP
Checking if your PC uses DHCP
Under Windows 95, you can check if your PC is acting as a DHCP client by using the following procedure. For other operating systems, check your system documentation. 1. Select Control Panel - Network. You should see a screen like the following:
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Figure 12: Network Configuration 2. 3. Select the TCP/IP protocol for your network card. Click on the Properties button. You should then see a screen like the following.
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IP5020 User Guide
Figure 13: IP Address (Win 95) 4. If the radio button for "Obtain an IP address automatically" is checked, as shown above, then your PC is acting as a DHCP client.
Checking your DHCP Server
If you already have a DHCP Server:
* * Check that the DHCP Server function in the IP5020 is Disabled. This setting is on the LAN Port screen. Check your DHCP Server, and ensure that: * IP Address assigned to the IP5020 (Device IP Address, set on the LAN Port screen) is compatible with the Address range used by the DHCP Server. Network Mask matches the value entered on the IP5020's LAN Port screen.
* *
DNS IP Address matches the value entered on the IP5020's LAN Port screen. www..com * Gateway is set correctly. This depends on whether or not you have a router installed on your LAN, as shown by the following table. Set the Default Gateway Address to the IP address (Device IP Address, set on the LAN Port screen) assigned to the IP5020. The default IP Address is 192.168.0.1. Do not change the Default Gateway Address. Instead, the router must be configured as explained in Chapter 6 - Routing.
No Router
Router
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DHCP
Using the IP5020's DHCP Server
To use the IP5020's built-in DHCP Server function: * * Ensure that the IP5020's DHCP Server is Enabled, and the other DHCP data is correct. (Check the Internal LAN Port screen). Configure your PCs to act as DHCP clients, as described below.
To Configure your PCs to use DHCP
Your PCs must be configured to act as DHCP clients. For Windows 95, the procedure is detailed below. For other operating systems, check your system documentation.
Windows 95 DHCP Client Setup
1. Select Control Panel - Network. You should see a screen like the following:
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Figure 14: Network Configuration 2. 3. Select the TCP/IP protocol for your network card. Click on the Properties button. You should then see a screen like the following.
25
IP5020 User Guide
Figure 15: IP Address (Win 95) 4. 5. Click on the radio button "Obtain an IP address automatically", as shown above. This sets the DHCP client ON. Click on the Gateway tab. The Default Gateway Address should be left blank. The DHCP server will provide this information. Click on the DNS Configuration tab The DNS (Domain Name Server) should be "Enabled" but the fields can be left blank. The DHCP server will provide this information also.
6.
To reserve an IP Address for a particular DHCP client, so that it always receives the same IP Address, refer to Workstations on page 44.
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This Chapter explains the Routing features of the IP5020.
Overview
While the IP5020 includes a standard (static) routing table, this feature can be completely ignored if you do not have a router in your LAN. If you DO have a router, it is necessary to configure BOTH the Router and the Routing table in the IP5020 correctly, as described in the following sections.
See page 29 for an example of configuring both the IP5020 and the Router.
IP5020 Configuration
The routing table is accessed by the Routing link on the navigation bar. An example screen is shown below.
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Figure 16: Routing Screen
Routing Table Data
An entry in the routing table is required for each LAN segment on your Network, other than the segment to which this device is attached. The data in the Routing Table is as follows.
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IP5020 User Guide
Destination IP Address The network address of the remote LAN segment. For standard class "C" LANs, the network address is the first 3 fields of this Destination IP Address. The 4th (last) field can be left at 0. The Network Mask used on the remote LAN segment. For class "C" networks, the standard Network Mask is 255.255.255.0 The IP Address of the Router on the LAN segment to which this device is attached. (NOT the router on the remote LAN segment.) Select the appropriate interface - LAN (Internal LAN) or WAN (External LAN or WAN) from the drop-down list. The number of routers which must be traversed to reach the remote LAN segment. The default value is 1.
Network Mask
Gateway IP Address Interface Metric
Router Configuration
It is essential that all IP packets for devices not on the local LAN be passed to the IP5020, so that they can be forwarded to the external LAN, WAN, or Internet To achieve this, the local LAN must be configured to use the IP5020 as the Default Route or Default Gateway.
Local Router
The local router is the Router installed on the same LAN segment as the IP5020. This router requires that the Default Route is the IP5020 itself. Typically, routers have a special entry for the Default Route. It should be configured as follows. Destination IP Address Network Mask
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Normally 0.0.0.0, but check your router documentation. Normally 0.0.0.0, but check your router documentation. The IP Address of the IP5020. 1
Gateway IP Address Metric
Other Routers on the Local LAN
Other routers on the local LAN must use the IP5020's Local Router as the Default Route. The entries will be the same as the IP5020's local router, with the exception of the Gateway IP Address. * * For a router with a direct connection to the IP5020's local Router, the Gateway IP Address is the address of the IP5020's local router. For routers which must forward packets to another router before reaching the IP5020's local router, the Gateway IP Address is the address of the intermediate router.
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Routing
Routing Example
R o ute r A
(1 9 2 .1 6 8 .1 .8 0 ) (1 9 2 .1 6 8 .0 .1 0 0 )
S e g m e nt 1
(1 9 2 .1 6 8 .1 .xx)
S e g m e nt 0
(1 9 2 .1 6 8 .0 .xx)
R o ute r B
(1 9 2 .1 6 8 .1 .9 0 ) (1 9 2 .1 6 8 .2 .7 0 )
IP 5 0 2 0
(1 9 2 .1 6 8 .0 .1 )
S e g m e nt 2
(1 9 2 .1 6 8 .2 .xx)
Figure 17: Routing Example For the LAN shown above, with 2 routers and 3 LAN segments, the required entries would be as follows.
For the IP5020's Routing Table
The IP5020 requires 2 entries as follows. Entry 1 (Segment 1) Destination IP Address Network Mask Gateway IP Address Entry 2 (Segment 2) Destination IP Address Network Mask
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192.168.1.0 255.255.255.0 (Standard Class C) 192.168.0.100 (IP5020's local Router)
192.168.2.0 255.255.255.0 192.168.0.100
Gateway IP Address
For Router A's Default Route
Destination IP Address Network Mask Gateway IP Address 0.0.0.0 0.0.0.0 192.168.0.1 (IP5020's IP Address)
For Router B's Default Route
Destination IP Address Network Mask Gateway IP Address 0.0.0.0 0.0.0.0 192.168.1.80 (IP5020's local router)
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Overview
This Chapter details the options available on the IP5020's "Device Options" screen.
The Device screen is reached by selecting the Device on the navigation bar, then Device Options The options available on this screen are: * * Password NAT (Network Address Translation)
An example screen is shown below.
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Figure 18: Device Options Screen
Device Password
Once a password is entered, it is required in order to change the device configuration. Passwords are case sensitive and can be up to 8 alphanumeric characters (no spaces or punctuation). To create or change the password, enter the required password in both the New Password and Verify Password input fields.
When prompted for the password, leave the "User Name" blank. If the password is lost, a DIP switch setting is available to clear the password. See the DIP Switch table on page 4 for details.
30
Routing
NAT (Network Address Translation)
NAT allows PCs on your LAN to use a local (internal) IP Address which is invalid on the Internet NAT ensures that the local IP Addresses are invisible to external sources. Use the following to determine whether or nor you need NAT. * * * If using this device for Internet access, NAT must be left On unless PCs on your LAN have valid external IP Addresses. If this device is not being used to provide shared Internet access, NAT is not normally required. If NAT is disabled, the IP5020 will act as a static router, and the Advanced Internet features (Virtual Servers, Special Applications, and Exposed Computer) are no longer available. If NAT is disabled, the Firewall protection provided by the IP5020 is lost.
*
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This Chapter explains how to use the IP5020's "Advanced Internet" features.
Overview
For situations where the IP5020 is being used to provide shared Internet access, the following advanced features are provided. * * * Special Applications Virtual Servers Exposed Computer
This chapter contains details of the configuration and use of each of these features.
Advanced Internet Screen
This screen provides access to the advanced Internet features, and provides a convenient overview and control center. An sample screen is shown below.
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Figure 19: Advanced Internet Screen On this screen, you can enable any required feature. By default, all features are disabled.
32
Advanced Internet
Special Applications
This feature is only required if you wish to use Internet applications which require 2-way communication, multiple connections, or combined TCP/UDP connections. Examples of such applications are Internet Videoconferencing, Telephony, Games Servers, and other special-purpose Servers. Generally, you will become aware of the need for this feature when an Internet application is unable to function correctly.
At any time, only one (1) PC can use each Special Application.
Special Applications Screen
This screen can be reached by selecting Advanced Internet - Special Applications. An example screen is shown below.
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Figure 20: Special Applications Screen
Using a Special Application
* * Ensure that Special Applications has been enabled on the Advanced Internet screen. Configure the Special Applications screen as required.
Configuration data must be obtained from the Service/Application provider. If an application still cannot function correctly, try using the "Exposed Computer" feature.
Some Special Applications have been defined not enabled. 33
IP5020 User Guide
* To Enable a defined Application Select it from the drop-down list Click "Get Data" Check the Enable checkbox Click "Update" To Disable a defined Application As above, but uncheck the Enable checkbox. To Delete a defined Application Select it from the drop-down list, Click "Delete" To Modify (Edit) a defined Application Select it from the drop-down list, Click "Get Data" Make any desired changes Click "Update" To Create a new Application Click "Clear Form" Enter the required data, as described below Click "Add" To List all Applications Click "List All"
* *
*
*
*
Configuration Data (from Service Provider)
This data must be obtained from the service provider. Name Enable Enter a descriptive name to identify this application entry. Use this to Enable or Disable support for this application, as required.
Outgoing Control Protocol The protocol (TCP or UDP) used when you connect to the special application service. of the range of port numbers used by the application server, for data you send to it. If the application uses a single port number, enter it in both the "Start" and "Finish" fields. The end of the range of port numbers used by the application server, for data you send.
Port Range: The www..com beginning Start
Port Range: Finish
Incoming Data Protocol Port Range: Start The protocol (TCP or UDP) used when the application or service sends data to you. The beginning of the range of port numbers used by the application server when data is sent to you. If the application uses a single port number, enter it in both the "Start" and "Finish" fields. The end of the range of port numbers used by the application server, when data is sent to you.
Port Range: Finish
34
Advanced Internet
Virtual Servers
This feature allows you to make a server on your LAN accessible to Internet users. Normally, Internet users would not be able to access a server on your LAN because: * * Your Server does not have a valid external IP Address. Attempts to connect to devices on your LAN are blocked by the firewall in this device.
The "Virtual Server" feature solves these problems and allows Internet users to connect to your servers, as illustrated below.
1 9 2 .1 6 8 .0 .1 (I n t er n a l L AN P or t )
W eb S erver (1 9 2 .1 6 8 .0 .1 0 )
Internet Acess S erver
2 0 3 .7 0 .2 1 2 .5 2 (E xt e r n a l L AN P or t )
FT P S erver (1 9 2 .1 6 8 .0 .2 0 )
In tern et
R em ote P C U sing W eb Server
R em ote P C U sing FTP S erver
(http ://2 03.7 0.2 12.52)
(ftp ://20 3.7 0.2 12.5 2)
Figure 21: Virtual Servers
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IP Address seen by Internet Users
Note that, in this illustration, both Internet users are connecting to the same IP Address, but using different protocols. To Internet users, all virtual Servers on your LAN have the same IP Address. This IP Address is the IP Address on the External LAN Port screen. This address should be static, rather than dynamic, to make it easier for Internet users to connect to your Servers.
Types of Virtual Servers
The IP5020 supports two (2) types of Virtual Servers: * * Pre-defined - Standard server types. The only data required is the IP Address of the server on your LAN. User-defined - Non-standard servers. You must provide additional information about the server.
Note that the TOTAL number of Virtual Servers which can be used is 10.
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IP5020 User Guide
Virtual Server Configuration
The Virtual Server screen is reached by the Advanced Internet - Virtual Server link. An example screen is shown below.
Figure 22: Virtual Server Screen. Simply select the Server type or types you wish to use, enter the IP Address of the server on your LAN, and click "Save".
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Advanced Internet
User Defined Virtual Servers
If the type of Server you wish to use is not listed on the Virtual Server screen, you can define it using this feature. The screen for this function is reached by selecting Advanced Internet - User Defined Virtual Servers. An example screen is shown below.
Figure 23: User Defined Virtual Servers This database operates in the same way as the other databases: * To Create a new Server Click "Clear Form" Enter the required data (See next section) Click "Add" To Modify (Edit) a defined Server Select it from the drop-down list, Click "Get Data" Make any desired changes. Note that you can "Enable" and "Disable" a Server using this process. Click "Update" To Delete a defined Server Select it from the drop-down list, Click "Delete" To List all Servers Click "List All"
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*
*
*
Configuration Data
Name Enable IP Address Enter a descriptive name to identify this Server entry. Use this to Enable or Disable support for this Server, as required. The IP Address of the PC on your LAN which is running the Server software. 37
IP5020 User Guide
Protocol Internal Port Number External Port Number Select the protocol (TCP or UDP) used by the Server. Enter the port number used by the Server to connect to clients. The port number used by clients when connecting to the Server. This is normally the same as the Internal Port Number. If it is different, this device will perform a "mapping" or "translation" function, allowing you to configure the server to use one port address, while clients use a different port address
Connecting to the Virtual Servers
Once configured, anyone on the Internet can connect to your Virtual Servers. They must enter the IP Address shown in the IP Address on the External LAN Port screen as the destination. e.g.
http://203.70.212.52
Using this Device as a Virtual Web Server
It is possible to configure the IP5020 itself as a Virtual Web Server. Once this is done, you can configure this device through the Internet. For the remote PC, the destination IP Address is the IP Address shown on the External LAN Port screen. Upon connecting to the IP5020, you will be prompted for the device password.
Ensure that a password has been set!
To make the IP5020 a Virtual Web Server: * * * Enable Virtual Server on the Advanced Internet screen Enable Web Server on the Virtual Servers screen. Enter the Device IP Address (from the Internal LAN Port screen) as the IP Address of the Web Server.
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Advanced Internet
Exposed Computer
This feature, if enabled, allows one (1) computer on your LAN to be exposed to all users on the Internet, allowing unrestricted 2-way communication between the "Exposed Computer" and other Internet users or Servers. * Internet users will see the PC as having the IP Address shown on the External LAN Port screen of this device. (This is the same IP Address used by the Virtual Servers.) Any Internet user who knows this address can connect to the Exposed Computer. (What happens after connection depends on what software both computers are using).
*
This allows connection to special-purpose servers which require proprietary client software, or 2-way user connections such as Video-conferencing, which requires both users to run special software.
To allow unrestricted access, the Firewall in this device is disabled, creating a security risk.
* *
You should use this feature only if the "Special Applications" feature is insufficient to allow an application to function correctly. This feature should be turned ON only when needed, and left OFF the rest of the time.
Configuring the Exposed Computer
Select Advanced Internet from the navigation bar, then Exposed Computer. You will see a screen like the following:
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Figure 24: Exposed Computer Screen
Data
The only data required is the LAN IP Address. Enter the IP Address of the PC on your LAN which will become the "Exposed Computer".
Checking
39
IP5020 User Guide
Once configured and enabled, the Exposed Computer should respond to a "ping" from any PC connected to the Internet. The "ping" command can be entered in the Run dialog, as follows: ping ip_address Where ip_address is the IP Address shown on the External LAN Port screen of this device.
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This Chapter explains how to configure and use the IP5020's "Access Control" feature.
Overview
The Access Control feature allows administrators to restrict Internet Access by individual workstations. The process uses "Packet Filtering" to block or discard data packets. By default, no packets are blocked or discarded. To use this feature: * Set the desired restrictions on the "Everyone" group. By default, all PCs are in the "Everyone" group unless explicitly moved to another group, using the Workstation screen. Set the desired restrictions on the other groups ("Group 1", "Group 2", etc ) as needed. For each Workstation you wish to move from the "Everyone" group, enter their details on the Workstation screen, and assign them to the desired group
* *
You can limit Internet access for ALL PCs without entering ANY workstation data. Simply apply the desired restrictions to the "Everyone" group.
It is also possible to define your own packet filters, and use these filters in addition to the pre-defined filters. Defining your own filters is optional.
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IP5020 User Guide
Security Groups
The Security Groups screen is reached from the Access Control link on the navigation bar. An example screen is shown below.
Figure 25: Security Groups Screen
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Note that the Security groups are pre-named "Everyone", "Group 1", "Group 2", "Group 3", and "Group 4".
Operations
* To Define a Security Group: Select the group from the drop-down box, then enter the required data. If necessary, click Clear Form to remove the existing information shown on screen. Click the Save button when finished. To Change Access for an Existing Group: Select the group from the drop-down box, click Get Data to view their information, then change any fields you wish. Click Save when finished. To Assign Workstations to a Security Group All Workstations are automatically in the "Everyone" group. Use the Workstations screen to move them to another group if required.
*
*
42
Access Control
Data
The following data is required.
Internet Access for this Group
There are 3 options: * * * No restrictions - No packets are blocked. Use this to create an "Unlimited Access" group, or to temporarily remove restrictions from a group. Block all Access - Groups members cannot access the Internet at all. Use this to create the most restrictive group. Use Packet Filter Table below - Use this to define intermediate levels of access. Using the Packet Filter table gives you fine control over Internet access.
Packet Filter Table
Simply select the items you wish to block. You can choose from the pre-defined filters in the Applications to Block column, or your own filters in the TCP Packets to Discard and UPD Packets to Discard column. Applications to Block TCP Packets to Discard Any items checked will be blocked. Users will not be able to use the application. This lists any TCP filters you have defined on the Administrator Defined Filters screen. If no filters have been defined, this is empty. Multiple items can be selected (or deselected) by holding down the Ctrl key while selecting items. Selected items can NOT be accessed by members of this group.
This lists any UDP filters you have defined on the Administrator Defined Filters screen. If no filters have been defined, this is empty. Multiple items can be selected (or deselected) by holding down the Ctrl key while selecting items. www..com Selected items can NOT be accessed by members of this group. UDP Packets to Discard
If you have not defined your own filters, but wish to do so, refer to "Administrator Defined Filters" on page 45.
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IP5020 User Guide
Workstations
The Workstations screen is reached from the Access Control link on the navigation bar. An example screen is shown below.
Figure 26: Workstations Screen Note that the drop-down box lists all Workstations previously entered. If none have been entered, this box will be empty.
Operations
* To Add a New Workstation: Ignore the drop-down box, click the Clear Form button, and enter the Workstation details in the fields provided. Click Add when finished.
To Delete an Existing Workstation: Select the Workstation from the drop-down box, click Get Data to view the www..comconfirm that this is the correct Workstation, then click the information and Delete button. * To Change an Existing Workstation's Details: Select the Workstation from the drop-down box, click Get Data to view their information, then change any fields you wish. Click Update when finished. To Generate a List of all Workstations: Just click on the List All button.
*
*
Data
Workstation Name Network Adapter Address Enter a name to identify this workstation. Hardware address for this workstation. You can use the Windows "Winipcfg" program or your LAN management program to find this address.
44
Access Control
Reserve entry in DHCP Table Check this if you wish to reserve an IP address for this workstation. This is useful if you have to provide the IP Address for other programs or users. If this is left unchecked, the following entry can be ignored. Reserved IP Address This relates to the entry above. Enter the reserved address here. This MUST be within the range used by the DHCP server (set on the Device - Internal LAN Port screen). Select the security group for this workstation. If you only wish to reserve an IP Address, and are not using the security (access control) features, simply leave this at "Everyone".
Security Group
Administrator Defined Filters
The Administrator Defined Filters screen is reached from the Access Control link on the navigation bar. An example screen is shown below.
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Figure 27: Administrator Defined Filters This screen allows you to define packet filters. When you define security groups, on the "Security Groups" screen, you can select from any filters defined here, as well as the pre-defined filters.
Data
TCP Packets
Define the packets you wish to be filtered out, by entering the following data. Name Enter a descriptive name for this entry. 45
IP5020 User Guide
Port No. Enter an integer representing the Port Number for this type of packet. A Network Analyzer or Packet Sniffer can be used to determine the correct port number.
UDP Packets
Define the packets you wish to be filtered out, by entering the following data. Name Port No. Enter a descriptive name for this entry. Enter an integer representing the Port Number for this type of packet. A Network Analyzer or Packet Sniffer can be used to determine the correct port number.
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Overview
$
This Appendix covers the most likely problems and their solutions.
This chapter covers some common problems that may be encountered while using the IP5020 and some possible solutions to them. If you follow the suggested steps and the IP5020 still does not function properly, contact your dealer for further advice.
General Problems
Problem 1: Solution 1: Can't connect to the IP5020 to configure it. Check the following: * * The IP5020 is properly installed, LAN connections are OK, and it is powered ON. Ensure that your PC and the IP5020 are on the same network segment. (If you don't have a router, this must be the case.)
Ensure that your PC is using an IP Address within the range 192.168.0.2 to 192.168.0.254 and thus compatible with the IP5020's default IP Address of 192.168.0.1. Also, the Network Mask should be set to 255.255.255.0 to match the IP5020. In Windows, you can check these settings by using Control Panel-Network to check the Properties for the TCP/IP www..com protocol.
*
Internet Access
Problem 1: Solution 1: When I enter a URL or IP address I get a time out error. A number of things could be causing this. Try the following troubleshooting steps. * Check if other PCs work. If they do, ensure that your workstations IP settings are correct (IP address, Network Mask, Default gateway and DNS). If the PCs are configured correctly, but still not working, check the IP5020. Ensure that it is connected and ON. Connect to it and check its settings. (If you can't connect to it, check the LAN and power connections.) If the IP5020 is configured correctly, check your Internet connection (DSL/Cable modem etc) to see that it is working correctly.
*
*
Problem 2:
Some applications do not run properly when using the IP5020. 47
IP5020 User Guide
Solution 2: The IP5020 processes the data passing through it, so it is not transparent. Use the Special Applications feature to allow the use of Internet applications which do not function correctly. If this does solve the problem you can use the Exposed Computer function. This should work with almost every application, but: * * * It is a security risk, since the firewall is disabled. Only one (1) PC can use this feature. When the Exposed Computer feature is being used, the Special Applications and Virtual Server features should be disabled.
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IP5020 Internet Access Server
Model No.: Dimensions Operating Temperature Storage Temperature Network Protocol: Network Interface: IP5020
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120mm(W) * 93mm(D) * 30mm(H) 0 C to 40 C -10 C to 70 C TCP/IP 2 Ethernet: 1 * 10/100BaseT (RJ45) 1 * 10BaseT (RJ45) 2 12 V DC
LEDs External Power Adapter
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