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HotBrick LB-2 User Manual

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Load Balancer LB-2
User’s Guide
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TABLE OF CONTENTS
1: INTRODUCTION ..............................................................................................................................1
2: BASIC SETUP..................................................................................................................................8
3: ADVANCED PORT SETUP............................................................................................................19
4: ADVANCED SETUP.......................................................................................................................25
Advanced Features ....................................................................................................................39
5: SECURITY MANAGEMENT ……………………………………………………………………………..42
Block URL ...................................................................................................................................42
Access Filter ...............................................................................................................................44
Session Limit ..............................................................................................................................46
Firewall Exception ……………………………………………………………………………….…… 47
6: QOS CONFIGURATION ………………………………………………………………………………….48
Overview ………………………………………………………………………………………………...48
QoS Setup ...................................................................................................................................48
Policy Configuration...................................................................................................................49
7: MANAGEMENT ASSISTANT ........................................................................................................51
Admin Password ........................................................................................................................56
Upgrade Firmware......................................................................................................................57
8: ADVANCED LAN CONFIGURATION ………………………………………………………………...58
Existing DHCP Server ………………………………………………………………………………...58
Routing........................................................................................................................................58
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9: OPERATION AND STATUS .........................................................................................................61
APPENDIX A SPECIFICATIONS.......................................................................................................67
APPENDIX B WINDOWS TCP/IP SETUP .........................................................................................68
APPENDIX C TROUBLESHOOTING.................................................................................................74
Copyright 2004. All Rights Reserved. Document Version: 1.3 All trademarks and trade names are the properties of their respective owners.
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1: Introduction

Congratulations on the purchase of your new HotBrick Load Balancer LB-2. The Load Balancer provides Shared Broadband Internet Access for all LAN users.
Figure 1: LB-2

Internet Features

• Shared Broadband Internet Access All LAN users can access the Internet through the Load Balancer LB-2, by sharing one (1) or two
(2) Broadband modems and connections.
• High-Performance Dual Modem Support The Load Balancer LB-2 has two (2) WAN ports, allowing connection of two (2) Broadband
modems. This gives twice the bandwidth of a single modem. Flexible configuration allows each port to use a different type of modem and connection method. Also, you can determine how the Internet traffic is shared between the 2 modems.
• Supports all common Connection Methods All popular DSL and Cable Modems and connection methods are supported, including Fixed IP,
Dynamic IP, PPPoE, and PPTP.
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• PPPoE Session Management Multiple PPPoE sessions are supported and you can choose to “map” sessions to individual PCs
if desired.
• Multiple IP Address Support If your ISP allocates you multiple IP addresses, these are also supported and you can “map” IP
addresses to individual PCs if desired.
• Special Applications This feature allows you to use some non-standard applications, where the port number used for
the response is different to the port number used by the sender.
• Virtual Servers This feature allows Internet users to access Internet servers on your LAN. For standard servers
such as Web, FTP or E-Mail servers, only the IP address of the server PC is required. You can also define you own Server types if required.
• Multiple DMZ A "DMZ" PC will receive incoming connection requests, which would otherwise be blocked. For
each IP address allocated by your ISP, a separate "DMZ" PC can be specified. So if your ISP has given you multiple IP addresses, you can have multiple “DMZ” PCs. Each “DMZ” PC has unrestricted 2-way Internet access, providing the ability to run programs that are otherwise incompatible with NAT routers like the Load Balancer.
• Access Filter The network Administrator can use the Access Filter to gain fine control over the Internet access
and applications available to LAN users. Five (5) user groups are available, and each group can have different access rights.
• Block URL Use this feature to block access to undesirable Web sites by LAN users. You can even have
different settings for different groups of PCs.
• Session Limit With Session Limit feature, if the numbers of new sessions for system exceed the maximum in
the sampling time, any new session in the system will be drop.
• Firewall Exception With firewall exception, the packets will not be processed by firewall or NAT module, but be
processed directly by system protocol stack.
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Other Features

• 4-Port Switching Hub The Load Balancer LB-2 incorporates a 4-port 10 /100BaseT switching hub, making it easy to
create or extend your LAN.
• DHCP Server Support Dynamic Host Configuration Protocol provides a dynamic IP address to PCs and other devices
upon request. The Load Balancer LB-2 can act as a DHCP Server for devices on your local LAN.
• Multi Segment LAN Support LANs containing one or more segments are supported, via the Load Balancer's built-in static
routing table.
• ARP proxy The ARP proxy feature allows you to assign an external (Internet) IP address to the Load
Balancer's LB-2 LAN port. This allows Servers on your LAN to have external (Internet) IP addresses.
• Easy Setup Use your favorite WEB browser for configuration.
• Remote Management The Load Balancer LB-2 can be managed from any PC on your LAN. And, if the Internet
connection exists, it can also (optionally) be configured via the Internet.
• Password - protected Configuration Optional password protection is provided to prevent unauthorized users from modifying the
configuration data and settings.
• HTTP Firmware Upgrade and backup The web management feature allows you to use HTTP upgrade new firmware and backup
system configuration from local or even from remote site. As long as you enable “Remote upgrade” and “Remote web-based setup” from Advanced feature web page.
• Email Alert It will send a warning email to the system administrator, if one of the WAN ports was
disconnected when both WAN ports are enabled.
• Syslog It can generate real time system information on the web page or a particular machine. It is useful
to monitor the device.
• QoS Configuration.
This function will make some specified packets with higher priority for pass-through. Especially you use real-time applications like Internet phone, video conference, etc.
• UPnP To “Enable” UpnP (Universal Plug & Play), the load balancer will become one of the network
devices. It is useful to discovery and control network devices, such as Internet gateway.
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Package Contents

The following items should be included:
• The Load Balancer LB-2 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 immediately.

Physical Details

Front Panel

Operation of the Front Panel LEDs is as follows:
LAN
LINK/ACT
10M/100M
WAN
LINK/ACT
10M/100M
System
Power
ON – Physical connection or data in/out. OFF – No physical connection. ON – The corresponding LAN port is using 100BaseT. OFF – 10BaseT connection on the corresponding LAN port or no connection.
ON – Physical connection to the Broadband modem on WAN port 1/2 established. OFF – No physical connection on WAN port 1/2. ON – Physical connection using 100BaseT on WAN port 1/2 established. OFF – 10BaseT connection or no connection on WAN port 1/2.
OFF – No power. ON – Normal Operation
Status
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OFF – Normal operation. ON – Firmware not loaded or Hardware error. Blinking – Data in/out
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Also, some Status and Error conditions are indicated by combinations of LEDs, as shown below
LED Action Condition
WAN1 LINK/ACT & 10M/100M LEDs flash alternatively. Firmware Download in progress. WAN1 LINK/ACT & 10M/100M LEDs flash concurrently. MAC address not assigned. WAN1 LINK/ACT & 10M/100M LEDs solid On SDRAM error WAN2 LINK/ACT & 10M/100M LEDs solid On Timer/Interrupt error LAN1 LINK/ACT & 10M/100M LEDs solid On LAN/WAN error
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Rear Panel Load Balancer LB-2

Figure 2: Rear Panel LB-2
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DC 5V WAN 2 Reset Button
LAN Ports
Connect the supplied power adapter here. Connect the 2 When pressed and released, the Load Balancer will reboot (restart) within 1
second. It resets to default over 3 seconds. Connect the PCs to these ports. Both 10BaseT and 100BaseT connections can
be used simultaneously.
nd
Broadband Modem here, if available.
Note:
Any port will automatically operate as an "Uplink" port if required. Just use a normal LAN cable to connect to a normal port on another hub.
WAN 1
Connect the primary Broadband Modem here.
Default Settings
When the Load Balancer LB-2 has finished booting, all configuration settings will be set to the factory defaults, including:
• IP Address set to its default value of 192.168.1.1, with a Network Mask of 255.255.255.0
• DHCP Server is enabled
• User Name: admin
• Password cleared (no password)
TFTP Download
This setting should be used only if your Load Balancer is unusable, and you wish to restore it by downloading new firmware. Follow this procedure:
1. Power On the Load Balancer LB-2.
2. Use the supplied Windows utility or a TFTP client program applies the new firmware. If using the supplied Windows TFTP program, the screen will look like the following example.
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Figure 3: Windows TFTP utility LB-2
• Enter the name of the firmware upgrade file on your PC, or click the "Browse" button to locate
the file.
• Enter the LAN IP address of the Load Balancer LB-2 in the "Server IP" field.
• Click "Download" to send the file to the Load Balancer LB-2.
3. When downloading is finished. It should then work normally, using the default settings.
Note:
The supplied Windows TFTP utility also allows you to perform three (3) other operations:
• Save the current configuration settings to your PC (use the "Upload" button).
• Restore a previously-saved configuration file to the Load Balancer LB-2 (use the "Download"
button).
• Set the Load Balancer LB-2 to its default values (use the "Set to Default" button).
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2: Basic Setup

Overview

Basic Setup of your HotBrick Load Balancer LB-2 involves the following steps:
1. Attach the HotBrick Load Balancer LB-2 to one (1) PC, and configure it for your LAN.
2. Install your HotBrick Load Balancer LB-2 in your LAN, and connect the Broadband Modem or Modems.
3. Configure your HotBrick Load Balancer LB-2 for Internet Access.
4. Configure PCs on your LAN to use the Load Balancer.

Requirements

• One (1) or two (2) DSL or Cable modems, each with an Internet Access account with an ISP.
• Network cables. Use standard 10/100BaseT network (UTP) cables with RJ45 connectors
• TCP/IP network protocol must be installed on all PCs.

Procedure

1: Configuring the Load Balancer LB-2 for your LAN

1. Use a standard LAN cable to connect your PC to any Hub port on the Load Balancer.
2. Connect the power adapter and power up the Load Balancer LB-2. Only use the power adapter provided; using a different one may cause hardware damage.
3. Start your PC. If your PC is already running, restart it. It will then obtain an IP address from the Load Balancer LB-2.
4. Start your WEB browser.
5. In the Address or Location box enter:
HTTP://192.168.1.1
6. You will be prompted for the User Name and password, as shown below.
Figure 4: Password Dialog
7. Enter admin for the "User Name" and leave the "Password" blank.
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• The "User Name" is always admin
• You can and should set a password, using the following Admin Password screen.
No Response ?
• Is your PC using a Fixed IP address ? If so, you must configure your PC to use an IP address within the range 192.168.1.2 to
192.168.1.254, with a Network Mask of 255.255.255.0. See Appendix B – Windows TCP/IP Setup for details.
• Check that the Load Balancer LB-2 is properly installed, LAN connection is OK, and it is powered ON.
8. After the login, you will then see the Admin Password screen, as shown below. Assign a password by entering it in the "Password" and "Verify Fields.
Figure 5: Home Screen (Admin Password) LB-2
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(
9. Select LAN & DHCP from the menu. You will see a screen like the example below.
Figure 6: LAN & DHCP
10. Ensure these settings are suitable for your LAN:
• The default settings are suitable for many situations.
• See the following table for details of each setting.
11. Save your data, then go to Step 2, Installing the Load Balancer LB-2 in your LAN.
Settings – LAN & DHCP
IP Address
Subnet Mask
IP address for the Load Balancer LB-2, as seen from the local LAN. Use the default value unless the address is already in use or your LAN is using a different IP address range. In the latter case, enter an unused 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 Subnet Mask for the LAN segment to which the Load Balancer LB-2 is attached (the same value as the PCs on that LAN segment).
DHCP Server Configuration
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• DHCP Server Setup - If Enabled, the Load Balancer LB-2 will allocate IP Addresses to PCs (DHCP clients) on your LAN when they start up. The default and recommended value is "Enable".
Windows systems, by
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default, act as DHCP clients. This setting is called Obtain an IP address automatically.)
• DHCP Server Setup - If you are already using a DHCP Server, the DHCP Server setting must be Disabled, and the existing DHCP server must be set to provide the IP address of the Load Balancer LB-2 as the Default Gateway.
• Client Lease Time – It is a finite period of time for a DHCP server lease an IP address to a client..
• Client Default DNS – An IP address of the default DNS server for the client requesting DHCP service.
DHCP IP Address Range
ARP Proxy
DHCP Client List
• Offered Range fields set the values used by the DHCP server when allocating IP Addresses to DHCP clients. This range also determines the number of DHCP clients supported.
• Free Entries indicates how many DHCP entries are not currently allocated, and still available.
Enable this ONLY if the LAN port has an IP address in the same address range as the WAN port(s). This means that all PCs using this Gateway must have valid fixed external (Internet) IP addresses.
If enabled, enter the IP address range used on your LAN.
This table shows the IP addresses which have been allocated by the DHCP Server function. For each address which has been allocated, the following information is shown.
• Name – The "hostname" of the PC. In some cases, this may not be known.
• MAC Address – The physical address (network adapter address) of the PC.
• IP Address – The IP address allocated to this PC.
• Type – Indicates IP address to be dynamic or static.
• Status – If Dynamic, the IP address was allocated by this DHCP Server.
If Sniffed, the IP address was detected by examining the LAN, rather than allocated by the DHCP Server. In this case, the Name is usually not known.
• Time Left – The time expired since which IP address is leased.
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2. Installing the HotBrick Load Balancer LB-2 in your LAN

Figure 7: Installation Diagram LB-2
1. Ensure the HotBrick Load Balancer LB-2 and the DSL/Cable modem are powered OFF. Leave the modem or modems connected to their data line.
2. Connect the Broadband modem or modems to the Load Balancer LB-2.
• If using only one (1) Broadband modem, connect it to the "WAN 1" port.
• Use the cable supplied with your DSL/Cable modem. If no cable was supplied, use a
standard cable.
3. Use standard LAN cables to connect PCs to the Switching Hub ports on the Load Balancer.
• Both 10BaseT and 100BaseT connections can be used simultaneously.
• If you need to connect the Load Balancer LB-2 to another Hub, just use a standard LAN cable
to connect any port on the Load Balancer LB-2 to a standard port on another hub. Any LAN port on the Load Balancer LB-2 will automatically act as an "Uplink" port when required.
4. Power Up
• Power on the Cable or DSL modem or modems.
• Connect the supplied power adapter to the Load Balancer LB-2 and power up.
5. Check the LEDs
• The Power LED should be ON.
• The WAN – Link LED should be ON, if the corresponding WAN port is connected to a
broadband modem.
• The Error LED will flash during start up, but will then turn off. If it stays on, there is an error
condition.
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• For each PC connected to the LAN ports, the corresponding LAN LED (either 10 or 100)
should be ON.

3. Configuring the HotBrick Load Balancer LB-2 for Internet Access

Select Primary Setup from the menu, to see a screen like the example below.
• Configure WAN 1 and/or WAN 2 as required.
• For any of the following situations, refer to Chapter 3: Advanced Port Setup for any further
configuration, which may be required.
• Using both ports
• Multiple IP addresses on either port
• Multiple PPPoE sessions
• PPTP connection method
Figure 8: Primary Setup Screen LB-2
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Settings – Primary Setup
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Connection Mode
Connection Type
Select the appropriate setting:
• Enable – Select this if you have connected a broadband modem to this port.
• Disable – Select this if there is no broadband modem connected to this port.
• Backup – Use this if you have a broadband modem on each port, and wish to normally use only one. Select Enable for the primary port, and Backup for the secondary port. The Backup port will only be used if the primary port fails.
Check the data supplied by your ISP, and select the appropriate option.
• Static IP – Select this if your ISP has provided a Fixed or Static IP address. Then enter the data into the Address Info fields.
• Dynamic IP – Select this if your ISP provides an IP address automatically, when you connect. You can ignore the Address Info fields.
• PPPoE – Select this if your ISP uses this method. (Usually, your ISP will provide some PPPoE software. This software is no longer required, and should not be used.) If this method is selected, you must complete the PPPoE dialup fields.
Note:
Address Info
PPPoE / PPTP Dialup
DNS
If using the PPTP connection method, select Static IP or Dynamic IP, as appropriate, according to the IP address method used by your ISP.
This is for Static IP users only. Enter the address information provided by your ISP. If your ISP provided multiple IP address, you can use the Multi-DMZ screen to assign the additional IP addresses.
This is for PPPoE and PPTP users only.
• Enter the Username and Password provided by your ISP.
• If using PPTP, enable the PPTP Connection checkbox, and enter the IP
address of the PPTP server.
• Host name (Optional For PPPoE),This field is used by a Host to uniquely associate an access concentrator to a particular Host request.
Note:
There are additional PPPoE/PPTP options on the Port Options screen. To use multiple PPPoE sessions on either port, configure the Advanced
PPPoE screen. If using a Fixed IP address, you MUST enter at least 1 DNS address.
If using Dynamic IP or PPPoE, DNS information is optional.
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Optional
Setup of the HotBrick Load Balancer LB-2 is now complete. PCs on your LAN must now be configured. See the following section for details.
• Host name – This is required by some ISPs. If your ISP provided a Host Name, enter it here. Otherwise, you can use the default value.
• Domain name – This is required by some ISPs. If your ISP provided a Domain Name, enter it here. Otherwise, you can use the default value.
• MAC address – Some ISP's record your MAC address (also called "Physical address" or "Network Adapter address"). If so, you can enter the MAC address expected by your ISP in this field. Otherwise, this should be left at the default value.
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4: Configure PCs on your LAN

Overview
For each PC, the following may need to be configured:
• TCP/IP network settings
• Internet Access configuration
TCP/IP Settings
If using the default Load Balancer LB-2 settings, and the default Windows 95/98/ME/2000/XP TCP/IP settings, no changes need to be made. Just start (or restart) your PC.
• By default, the Load Balancer LB-2 will act as a DHCP Server, automatically providing a suitable IP Address (and related information) to each PC when the PC boots.
• For all non-Server versions of Windows, the default TCP/IP setting is to act as a DHCP client. In Windows, this is called Obtain an IP address automatically. Just start (or restart) your PC and it will obtain an IP address from the Load Balancer LB-2.
• If using fixed IP addresses on your LAN, or you wish to check your TCP/IP settings, refer to Appendix B – Windows TCP/IP Setup.
Internet Access
To configure your PCs to use the Load Balancer LB-2 for Internet access, follow this procedure:
For Windows 9x/2000
1. Select Start Menu - Settings - Control Panel - Internet Options.
2. Select the Connection tab, and click the Setup button.
3. Select "I want to set up my Internet connection manually, or I want to connect through a local area network (LAN)" and click Next.
4. Select "I connect through a local area network (LAN)" and click Next.
5. Ensure all of the boxes on the following Local area network Internet Configuration screen are unchecked.
6. Check the "No" option when prompted "Do you want to set up an Internet mail account now?".
7. Click Finish to close the Internet Connection Wizard. Setup is now completed.
For Windows XP
1. Select Start Menu - Control Panel - Network and Internet Connections.
2. Select Set up or change your Internet Connection.
3. Select the Connection tab, and click the Setup button.
4. Cancel the pop-up "Location Information" screen.
5. Click Next on the "New Connection Wizard" screen.
6. Select "Connect to the Internet" and click Next.
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7. Select "Set up my connection manually" and click Next.
8. Check "Connect using a broadband connection that is always on" and click Next.
9. Click Finish to close the New Connection Wizard. Setup is now completed.
Accessing AOL
To access AOL (America On Line) through the Load Balancer LB-2, 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 "Load Balancer LB-
2".
• Click Edit Location. Select TCP/IP for the Network field. (Leave the Phone Number blank.)
• Click Save, then OK.
Configuration is now complete.
• Before clicking "Sign On", always ensure that you are using the "Load Balancer LB-2" location.

Macintosh Clients

From your Macintosh, you can access the Internet via the Load Balancer LB-2. The procedure is as follows.
1. Open the TCP/IP Control Panel.
2. Select Ethernet from the Connect via pop-up menu.
3. Select Using DHCP Server from the Configure pop-up menu. The DHCP Client ID field can be left blank.
4. Close the TCP/IP panel, saving your settings.
Note:
If using manually assigned IP addresses instead of DHCP, the required changes are:
• Set the Router Address field to the Load Balancer’s LB-2 IP Address.
• Ensure your DNS settings are correct.

Linux Clients

To access the Internet via the Load Balancer LB-2, it is only necessary to set the Load Balancer LB-2 as the "Gateway", and ensure your Name Server settings are correct.
Ensure you are logged in as "root" before attempting any changes.
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Fixed IP Address
By default, most Unix installations use a fixed IP Address. If you wish to continue using a fixed IP Address, make the following changes to your configuration.
• Set your Default Gateway to the IP Address of the Load Balancer LB-2.
• Ensure your DNS (Name server) settings are correct.
To act as a DHCP Client (recommended)
The procedure below may vary according to your version of Linux and X -windows shell.
1. Start your X Windows client.
2. Select Control Panel - Network
3. Select the "Interface" entry for your Network card. Normally, this will be called "eth0".
4. Click the Edit button, set the "protocol" to "DHCP", and save this data.
5. To apply your changes Use the "Deactivate" and "Activate" buttons, if available. OR, restart your system.
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3: Advanced Port Setup

Overview

• Port Options contains some options, which can be set on either or both WAN ports. For most situations, the default values are satisfactory.
• Load Balance screen is only functional if you are using both WAN ports. It allows you to determine the proportion of WAN traffic sent through each port.
• Advanced PPPoE setup is required if you wish to use multiple sessions on one or both of the WAN ports. It can also be used to manually connect or disconnect a PPPoE session. Otherwise, this screen can be ignored.
• Advanced PPTP setup is required if using the PPTP connection method.

Port Options

Figure 9: Port Options
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Settings – Port Options
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Connection Validation
PPPoE / PPTP Connection Options
• Health Check – Disable will not do Alive Indicator Check. By default health check is enable. Health checking is performing an ICMP echo request and HTTP packets to the specific destination that could be either: 1. Name or IP Address user specified in the “Alive Indicator” input box or gateway of WAN interface if “Alive Indicator” input box is left blank.
• Alive Indicator – This is the IP address used to check if the WAN connection is operating. The Load Balancer LB-2 will contact this system to check if the WAN connection is working. Change this address if you wish. Default is the gateway IP. Note: This is not used for PPPoE connections.
• MTU – The Maximum Transmission Unit is used when determining the packet size to be used on the WAN interface. Normally, this does not need to be changed, but if your ISP advises you to use a particular MTU, enter it here.
• Auto Dialup – If set to Enable a connection will be established whenever outgoing WAN traffic is detected. If not Enabled, you must establish a connection manually.
• Auto Disconnect – This determines when an idle connection will be terminated. Enter the required time period.
• Echo Time – This determines how often an Echo request is sent to the PPPoE server. The Echo request is used to determine if the connection is still valid. Normally, there is no need to change the default value.
Transparent Bridge Option
• Echo Retry – The number of time the Echo request will be sent, if there is no response to the first request. Normally, there is no need to change the default value.
• Bridge Mode – If set to Enable, this WAN port doesn’t use NAT & Load Balance function when LAN/WAN IP have the real IP addresses on the same network segment.
• Traffic Management –
Strict Binding : traffic from bridge hosts(eg.
transparent to wan1) can only go thru that specified wan(eg. wan1) interface.
Loose Binding : traffic from bridge hosts(eg.
transparent to wan1) can go thru alternative wan(eg. wan2) interface when binded interface (eg. wan1) is down, it's acting like a fail over mechanism for transparent bridge mode.
Balancing :
Traffic from bridge hosts(eg. transparent to wan1) can
Load
go thru either wan(eg. wan1 or wan2) interface based on loading mechanism specified in the load balance section, it's acting like a load balancing mechanism for transparent bridge mode.
• ARP Table – ARP table is used by the device to determine the bridge hosts’ location ( eg, inside/outside wan and which wan) its’ size can be adjusted if needed.
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Load Balance

This screen is only operational if using Internet connections on both WAN ports.
Figure 10: Load Balance
These settings are only functional if using both WAN ports. If using both WAN ports, these settings determine the proportion of traffic sent over each port.
Settings – Load Balance
Load Balance Configuration
• Enable – Use this to enable your Load Balance settings. Unless this is checked, the other settings on this screen have no effect.
• Balance Type – Select the desired option:
• Bytes rx+tx – Traffic is measured by Bytes.
• Packets rx+tx – Traffic is measured by Packets.
• Sessions established – Traffic is measured by Sessions.
• Loading Share on WAN 1 – Enter the percentage (%) of traffic to be sent
over WAN 1. If one WAN port connection has greater bandwidth than the other, the one with the greater bandwidth should be given a higher percentage of traffic than the other.
Click the "Update" button to save your changes.
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NAT Statistics
Interface Statistics
Buttons
This section displays the current data about WAN 1 and WAN 2. You can use this information to help you "fine-tune" the settings above.
This section displays cumulative statistics. Use the "Restart Counters" button to restart these counters when required.
• Update – Save the settings on this screen.
• Refresh – Update the data on screen.
• Restart Counters – Restart the counters used in the "Interface Statistics"
section.
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Advanced PPPoE

The screen is required in order to use multiple PPPoE sessions on the same WAN port. It can also be used to manually connect or disconnect a PPPoE session.
Settings – Advanced PPPoE
WAN Port PPPoE Session
WAN IP Account
Action
Connection Status
Select the desired Port and Session, then click the "Select" button. The data for the selected Port/Session will then be displayed in the WAN IP Account section.
• User Name – Enter the PPPoE user name assigned by your ISP.
• Password – Enter the PPPoE password assigned by your ISP.
• Verify Password – Re-enter the PPPoE password assigned by your ISP.
• IP Address – If you have a fixed IP address, enter if here. Otherwise, this
field should be left at 0.0.0.0.
• Host Name – This field is used by a Host to uniquely associate an access concentrator to a particular Host request.
Use the "Connect" and "Disconnect" buttons to establish or terminate a connection on this session, if required.
This displays the current connection status for each session.
Figure 11: Advanced PPPoE
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Advanced PPTP

This screen is only useful if using the PPTP connection method.
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Settings – Advanced PPTP
WAN Port
WAN IP Account
Action
Connection Status
Select the desired Port, then click the "Select" button. The data for the selected Port will then be displayed in the WAN IP Account section.
• User Name – The PPTP user name (login name) assigned by your ISP.
• Password – The PPTP password associated with the User Name above.
This is assigned by your ISP, and used to login to the PPTP Server.
• Verify Password – Re-enter the PPTP password assigned by your ISP.
• Server IP Address – Enter the IP address of the PPTP Server, as
provided by your ISP.
• Static IP Address – If you have a fixed IP address, enter if here. Otherwise, this field should be left at 0.0.0.0.
Use the "Connect" and "Disconnect" buttons to establish or terminate a connection on this session, if required.
This displays the current connection status.
Figure 12: Advanced PPTP
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4: Advanced Setup

Overview

The following advanced features are provided.
• Host IP Setup
• Virtual Servers
• Custom Virtual Server
• Special Applications
• Dynamic DNS
• Multi DMZ
• Advanced Features
• UPnP
This chapter contains details of the configuration and use of each of these features.

Host IP Setup

This feature is used in the following situations:
• You have Multi-Session PPPoE, and wish to bind each session to a particular PC on your LAN.
• You wish to use the Access Filter feature. This requires that each PC be identified by using the
Host IP Setup screen.
• You wish to have different Block URL settings for different PCs. This requires that each PC be identified by using the Host IP Setup screen. (You do not have to use the Host IP feature to apply the same Block URL settings to all PCs.)
• You wish to reserve a particular (LAN) IP address for a particular PC on your LAN. This allows the PC to use DHCP (Windows calls this "Obtain an IP address automatically") while gaining the benefits of a fixed IP address. The PC's IP address will never change, so it can be provided to other people and applications.
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Settings – Host IP Setup
Host Network Identity
This section identifies each Host (PC)
• Host List – When adding a new Host, ignore this list. To edit an existing entry, select it from the list, and click the "Select" button. The data fields will then be updated with data for the selected entry.
• Host name – Enter a suitable name. Generally, you should use the "Hostname" (computer name) defined on the Host itself.
• MAC Address – Also called Physical Address or Network Adapter Address. Enter the MAC address of this host.
• Select Group – Select the group you wish to put this host into.
• Reserve in DHCP – Select Enable to reserve a particular (LAN) IP address
for a particular PC on your LAN. This allows the PC to use DHCP (Windows calls this "obtain an IP address automatically") while having an IP address which never changes.
Figure 13 Host IP Setup
• Reserved IP – Enter the IP address you wish to reserve, if the setting above is Enable. Otherwise, ignore this field.
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Host Network Binding
Buttons
Host & Group List
• Bind WAN port/Session – Select Enable if you wish to associate this PC with a particular PPPoE Session. All traffic for that PC will then use the selected PPPoE port and session.
• Binding Method – Suppose your PC is bound to WAN1 port, now you are selecting “Strict Binding”. If WAN1 port is disconnected, your packets cannot go out through WAN2 port, if WAN2 port is still alive. If you are selecting “Loose Binding” then when WAN1 port is disconnected, your packets will automatically go to WAN2, if WAN2 is alive.
• Select WAN Port/Select PPPoE session – If the setting above is Enable, select the desired Port and Session. Otherwise, ignore these settings.
Note: Multiple PPPoE sessions are defined on the Advanced PPPoE screen.
• Add – Use this to add a new entry to the database, using the data shown on screen.
• Delete – Click this to delete the selected entry.
• Update – Use this to update the selected entry, after making the desired
changes.
• Reset – Reverse any changes you have made since loading the data from the Load Balancer.
This table shows the current bindings.
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Virtual Servers

This feature allows you to make Servers on your LAN accessible to Internet users. Normally, Internet users would not be able to access a server on your LAN because:
• Your Server's IP address is only valid on your LAN, not on the Internet.
• Attempts to connect to devices on your LAN are blocked by the firewall in the Load Balancer.
The "Virtual Server" feature solves these problems and allows Internet users to connect to your servers, as illustrated below.
Figure 14: Virtual Servers
Note that, in this illustration, both Internet users are connecting to the same IP Address, but using different protocols.

Connecting to the Virtual Servers

Once configured, anyone on the Internet can connect to your Virtual Servers. They must use the Load Balancer's Internet IP Address (the IP Address allocated by your ISP). e.g.
http://205.20.45.34 ftp://205.20.45.34
• To Internet users, all virtual Servers on your LAN have the same IP Address. This IP Address is allocated by your ISP.
• This address should be static, rather than dynamic, to make it easier for Internet users to connect to your Servers. However, you can use the Dynamic DNS feature (explained later in this chapter)
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to allow users to connect to your Virtual Servers using a URL, instead of an IP Address. e.g.
HTTP://my_domain_name.dyndns.org FTP://my_domain_name.dyndns.org
Settings – Virtual Server
Enable Server Type
LAN IP Address
Use this to Enable or Disable each Virtual server as required. Select the desired Server type. If the type of Server you wish to use is not listed,
use the Custom Virtual Server screen to define your own type. Enter the IP address of the PC on your LAN which is running the required Server
software. Each PC should have a fixed IP address, or have a reserved IP address. (See the
Host IP section earlier in this chapter for details on reserving an IP address.)
Figure 15 Virtual Server
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Custom Virtual Servers

This screen allows you to define your own Server types, for situations when the desired Server type is not listed on the Virtual Servers screen.
Figure 16 Custom Virtual Servers
Settings – Custom Virtual Servers
Select Custom Server Name
Custom Server Configuration
Server List
If creating a new entry, ignore this list. To edit an existing entry, select it, and then click the "Select" button.
The screen will update with data for the selected entry. This data defines the Custom Virtual Server:
• Server Name – Enter a suitable name for this server.
• State – Use this to Enable or Disable the server as required.
• Server IP – Enter the IP address of the PC on you LAN which is
running the required Server software. Each PC should have a fixed IP address, or have a reserved IP address. (See the Host IP section earlier in this Chapter for details on reserving an IP address.) Each PC must be running the appropriate Server software.
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• Protocol Type – Select the network protocol used by this sever type.
• LAN Port Range – Enter the range of port number used for outgoing traffic from this Server. If only a single port is required, enter it in both fields.
• WAN Port Range - – Enter the range of port number used for incoming traffic to this Server. If only a single port is required, enter it in both fields
• Interface Binding – This selection allows the severs binding WAN1 port or WAN2 port, or even both WAN1 and WAN2 ports together.
Buttons
Custom Virtual Server List
• Add – Create a new Special Application entry.
• Delete – Delete the selected entry.
• Update – Save any changes you have made to the current entry.
• Cancel – Cancel any changes you have made since the last save
operation.
This table shows details of all Custom Virtual Servers which have been defined.
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Special Applications

If you use Internet applications which have non-standard connections or port numbers, you may find that they do not function correctly because they are blocked by the firewall in the Load Balancer. In this case, you can define the application as a "Special Application" in order to make it work.
Note that the terms "Incoming" and "Outgoing" on this screen refer to traffic from the client (PC) viewpoint
Figure 17 Special Applications
Settings – Special Applications
Select Special Application Name Select Name Item
Special Application Configuration
This lists any special applications, which are currently defined.
• If adding a new Special Application, ignore this list. Just enter your data in the Special Application Configuration section, and click the "Add" button.
• To edit an existing entry, select it from this list, and click the "Select" button. The data for the selected application will then be displayed in the Special Application Configuration section. Make any required changes, and then click the "Update" button.
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Enable Name Outgoing Protocol
Outgoing Port Range
Incoming Protocol
Incoming Port Range
Buttons
Special Application List
Use this to Enable or Disable this Special Application as required. Enter a descriptive name to identify this Special Application. Select the protocol used by this application, when sending data to the
remote server or PC. Enter the beginning and end of the range of port numbers used by the
application server, for data you send. If the application uses a single port number, enter it in both fields.
Select the protocol used by this application, when receiving data from the remote server or PC.
Enter the beginning and end of the range of port numbers used by the application server, for data you receive. If the application uses a single port number, enter it in both fields.
• Add – Create a new Special Application entry.
• Delete – Delete the selected entry.
• Update – Save any changes you have made to the current entry.
• Cancel – Cancel any changes you have made since the last save
operation.
This shows details of all Special Applications which are currently defined.

Using a Special Application on your PC

• Once the Special Applications screen is configured correctly, you can use the application on your PC normally. Remember that only one (1) PC can use each Special application at any time.
• Also, when 1 PC is finished using a particular Special Application, there may need to be a "Time­out" period before another PC can use the same Special Application.
• If an application still cannot function correctly, try using the "DMZ" feature, if possible.
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Dynamic DNS

Dynamic DNS is very useful when combined with the Virtual Server feature. It allows Internet users to connect to your Virtual Servers using a URL, rather than an IP Address.
This also solves the problem of having a dynamic IP address. With a dynamic IP address, your IP address may change whenever you connect to your ISP, which makes it difficult to connect to you.
You must register for the Dynamic DNS service. The Load Balancer supports 2 types of service providers:
• Standard client, available at http://www.dyndns.org Other sites may offer the same service, but can not be guaranteed to work.
• TZO at http://www.tzo.com
• 3322 is available in China at http://www.3322.org

To use the Dynamic DNS feature

1. Register for the service from your preferred service provider.
2. Follow the service provider's procedure to have a Domain Name (Host name) allocated to you.
3. Configure the Dynamic DNS screen, as described below.
4. The Load Balancer will then automatically update your IP Address recorded by the Dynamic DNS service provider.
5. From the Internet, users will now be able to connect to your Virtual Servers (or DMZ PC) using your Domain name.
Figure 18 Dynamic DNS
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Settings – Dynamic DNS
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Dynamic DNS Service
WAN Port Binding
TZO Custom Dynamic DNS Service
Standard Client or 3322
Use this to Enable/Disable the Dynamic DNS feature, and select the required service provider.
• Disable – Dynamic DNS is not used.
• TZO – Select this to use the TZO service (www.tzo.com). You must configure
the TZO section of this screen.
• Standard Client – Select this to use the standard service (from www.dyndns.org or other provider). You must configure the Standard Client section of this screen.
• 3322(in China) – This is available in China. It is similar to “Standard client”
• Select the WAN port on which the Dynamic DNS is used.
• The "Force Update" button will update your record on the Dynamic DNS
Server immediately.
If you have registered for this service, complete these fields.
• Key – Enter your Key, as recorded on the TZO Web site.
• E-mail – Enter your E-mail address, as recorded on the TZO Web site.
• Domain – Enter the domain name allocated to you by TZO.
If you have registered for this service, complete these fields.
• User Name – Enter the user name recorded by the service provider.
Additional Standard Client or 3322 Settings
• Password – Enter the password recorded by the service provider.
• Verity Password – Re-enter the password above.
• Server – Enter the name or IP address of the service provider's Server.
• Host Name - Enter the domain name allocated to you by the service provider.
These options are available if using the standard client.
• Enable Wildcard – If selected, traffic sent to sub-domains (of your Domain name) will also be forwarded to you.
• Enable backup MX – If enabled, you must enter the Mail Exchanger address below.
• Mail Exchanger – If the setting above is enabled, enter the address of the backup Mail Exchanger.
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Multi DMZ

This feature allows each WAN port IP address to be associated with one (1) computer on your LAN. All outgoing traffic from that PC will be associated with that WAN port IP address. Any traffic sent to that IP address will be forwarded to the specified PC, allowing unrestricted 2-way communication between the "DMZ PC" and other Internet users or Servers.
Note:
The "DMZ PC" is effectively outside the Firewall, making it more vulnerable to attacks. For this reason, you should only enable the DMZ feature when required
Figure 19 Multi DMZ
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Settings – Multi DMZ
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Enable Name
For Static IP Public IP address
Private IP Address (LAN)
For Dynamic IP WAN Session
Private IP Address (LAN)
Use this to enable or disable the DMZ setting, as required. Enter a name to assist you to remember this setting. This name has no effect
on the operation.
Enter the WAN port (Internet) IP address you wish to associate to a PC. This IP address must have been allocated to you by your ISP.
Enter the IP address of the PC you wish to associate with this WAN port IP address. This IP address should be fixed, or reserved. (See the Host IP section for details on reserving an IP address.)
Select the desired WAN port.
• Select "DHCP" if the IP address on this WAN port is dynamically assigned. You can only select assign one (1) Private (LAN) IP address to each port.
• If using multi-session PPPoE, select the desired PPPoE session. These sessions are defined on the Advanced PPPoE screen. You can assign one (1) one (1) Private (LAN) IP address to each PPPoE session.
Enter the IP address of the PC you wish to associate with this WAN port IP address. This IP address should be fixed, or reserved. (See the Host IP section for details on reserving an IP address.)
Access Group
Direction
You can decide the users to have the authority of using DMZ, by define the groups.
For DMZ, you can allow inbound, outbound only, or both inbound and outbound both.
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UPnP

With UPNP (Universal Plug & Play) function, it can easily setup and configure an entire network, enable discovery and control of networked devices and services.
Figure 20 UPnP
Settings – UPnP
UPnP Option
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If you Enable UPnP, then this two wan router will become one of the entire local network. You can find out there is an icon show up on network neighborhood on the window XP OS.
Every time you add a new network device with port mapping, The new network device will appear on the mapping list.
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Advanced Features

This screen allows you to change some advanced settings:
• NAT – NAT (Network Address Translation) is the technology which allows a number of LAN PCs to share one (1) Internet IP address. These settings rarely need to be changed.
• Remote Access Configuration – This feature allows you to manage the Load Balancer via the Internet. You can restrict access to a specified IP address or address range.
• External Filters Configuration – These settings determine whether or not the Load Balancer should respond to ICMP (ping) requests received from the WAN port.
• Interface Binding – Use these to ensure that certain traffic is sent by a particular WAN port, and thereby a particular ISP account. These settings are only useful if using both WAN ports.
Protocol & Port Binding – This allows you binding WAN1 or WAN2 ports by selecting TCP/UDP protocol.
Settings – Advanced Features
NAT Configuration
• NAT Routing – NAT (Network Address Translation) is the technology which allows one (1) WAN (Internet) IP address to be used by many LAN users.
• If you disable NAT, Internet access is only possible if all PCs are
configured with valid Internet IP addresses. (The Load Balancer needs 2 addresses, 1 for the LAN port, and 1 for the WAN port.)
• Generally, NAT is disabled only when you wish to use the Load Balancer
as a Static Router.
• TCP Timeout – Enter the desired value to use on both WAN ports. The default is 300.
• UDP Timeout – Enter the desired value to use on both WAN ports. The default is 120.
• TCP Window Limit – Enter the desired value to use on both WAN ports. The default is 0 (no limit).
• TCP MSS Limit – Enter the required MSS (Maximum Segment Size) to use on both WAN ports. The default is 0 (no limit).,
• Disable Port Translation – Enter the desired port range of all packets which aren’t translated via WAN port.
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Session Persistency (Protocol, Port Range)
Enabled Session 1 Session 2 Session 3 Session 4 Session 5 Session 6
BOTH BOTH BOTH BOTH BOTH BOTH
0
0 0
~
0 0
~
0 0
~
0 0
~
0 0
~
0
~
Session Persistency – Some Internet applications (notably secure web sites, gaming sites) would need several established sessions to make a successful transaction (or connection) and most likely they expect all sessions would be coming from the same source (IP address). Multiple-Wan devices by default (without any binding rules set) would handle all the traffic using load balance algorithm, sessions would be distributed and passed over all available wan interfaces and thus when connecting against those applications or web sites this is breaking its rule (same source) and would create problems (something like slow connection, web pages not fully loaded etc) . Session binding rule is implemented to avoid such situation, it indexes all the traffic from each host within LAN side and instruct them going through one specific (dynamically selected) wan interface during host’s active period and as the result problem is avoided when communicating with those applications.
a)Enable – Enable Checkbox will enable Session Persistency mechanism. b) Users can use pull-down menu to select TCP, UDP or both protocols for the Internet . c) Port range – User an define port number range to decide the traffic sessions, and maintain on that
WAN IP port . For example, if the port range is 2903 ~ 2923, that means only the port number from 2903 to 2923 will keep the sessions accordance for a WAN port.
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Remote Access Configuration
• Remote Upgrade – If enabled, you can use the supplied Windows program to remotely upgrade the Firmware. If not enabled, upgrades must be performed by a PC on the LAN.
• Remote Web-based setup - – If enabled, access to the Web-based interface is available via the Internet. (See below for details.) If not enabled, access is only available to PCs on the LAN.
• Port – The port number used when connecting remotely. See below for details.
• Allowed IP range – Remote access is only available to the IP addresses entered here.
• Leaving these fields blank will allow access by all PCs.
• These addresses must be Internet IP addresses, not addresses on the
local LAN.
• To specify a single address, enter it in both fields.
• IDENT Port – Port 113 is associated with the Internet's (Identification /
Authentication) service. When a client program in your computer contacts a remote server for services such as POP, IMAP, SMTP, that remote server sends back a query to the "Ident" server running in many systems listening for these queries on port 113. This means that port 113 is often probed by attackers as a rich source of your personal information. By default it is “Disable”.
External Filters Configuration
Dynamic Routing
DNS Loopback
These settings determine whether or not the Load Balancer should respond to ICMP (ping) requests received from the WAN port.
• Block Selected packet types – This acts as "master" switch. If checked, the selected packet types are blocked. Otherwise, they are accepted.
• Echo Request, Timestamp Request, … Select the packet types you wish to block, using the checkboxes.
• RIP v2 – This acts as “master” switch. If enabled, the selected WAN or LAN will run RIPv1/v2, otherwise they don’t have RIP function.
• LAN, WAN1, WAN2 – If enabled, any WAN or LAN can execute RIP function.
When you have some servers on LAN and their domain names have already registered on public DNS. To avoid DNS loop back problem, please enter the following fields.
• Domain Name – Enter the domain name specified by you for local host/server.
• Private IP – Enter the private IP address of your local host/server.
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Interface Binding
Protocol & Port Binding
SMTP (Simple Mail Transport Protocol) Binding
Unless you are using E-mail accounts from different ISPs on each port, you can ignore these settings.
Some ISPs configure their E-mail Servers so they will not accept E-mail from IP addresses not allocated by themselves. If you are using accounts from different ISPs, sending E-mail over the wrong port may result in non-acceptance of the mail. In this case, you can use these settings to correct the problem.
• Enable - If enabled, the port you specify below will be used for all outgoing SMTP traffic. If not enabled, either port will be used.
• WAN 1 / WAN 2 – Select the desired port.
Protocol and Port Binding
Use these settings if you wish to ensure that particular traffic is sent by a particular WAN port, and thereby a particular ISP account.
• Enable - Enable or disable each item as required.
• Source IP - IP address of source which packets are sent from.
• Destination IP – IP address of destination which packets are sent to.
• Subnet Mask – With subnet mask other than 255.255.255.255, you can
make a IP sub-network as your destination.
• Protocol - Select the protocol used by the traffic you wish to configure.
• Port Range - Enter the beginning and end of the port range used by the traffic
you wish to configure. If only a single port is used, enter the port number in both fields.
• WAN - Select the port you wish this traffic to use.
Using Remote Web-based Setup
To connect to the Load Balancer from a remote PC via the Internet:
1. Ensure that both your PC and the Load Balancer are connected to the Internet.
2. Start your Web Browser.
3. In the "Address" bar, enter "HTTP://" followed by the Internet IP Address of the Load Balancer. If the port number is not 80, the port number is also required. (After the IP Address, enter ":" followed by the port number.) e.g.
HTTP://123.123.123.123:8080
• This example assumes the WAN IP Address is 123.123.123.123, and the port number is 8080.
• If using the Dynamic DNS feature, you can connect using the domain name allocated to you.
e.g.
HTTP://my_domain_name.dyndns.org:8080
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5: Security Management

Overview

• Block URL It can block specific website by configure IP address, URL or Key words
• Access filter You can block all Internet access or select block well-known port or block user
define ports by groups.
• Session Limit It can eliminate users access Internet, and send email alert to the administrator. If the device detect new sessions that is exceed the maximum sampling time.
• Firewall Exception It can eliminate users access Internet, and send email alert to the administrator. If the device detect new sessions that is exceed the maximum sampling time.

Block URL

This feature allows you to block access to undesirable Web sites. You can block by URL, IP address, or Keyword. You can also have different blocking settings for different groups of PCs.
• In operation, every URL is searched to see if it matches or contains any of the URL or keywords entered here. Then, after a DNS lookup determines the IP address of the requested site, the site's IP address is checked against IP address entries on this screen.
• Note that a single IP address may host many Web sites. Entering the IP address on this screen will block all Web sites hosted on that IP address.
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Settings – Block URL
Access Group
Block Internet Access
This allows you have different blocking rules for different Groups of PCs.
• All PCs (users) are in the Default Group unless moved to another group on the Host IP screen.
• If you want the same restrictions to apply to everyone, select Default for the Group. In this case, there is no need to enter any Hosts on the Host IP screen.
• If you wish to apply different restrictions on different Groups, select the desired Group, and click the "Select" button. The screen will update with data for the selected Group.
• Enable/Disable – Use this to Enable or Disable each setting, as required.
• Block URL/IP/Keyword – Enter the URL, IP address or keyword you wish
to block.
Figure 22 Block URL
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Access Filter

The network Administrator can use the Access Filter to gain fine control over the Internet access and applications available to LAN users.
• Five (5) user groups are available, and each group can have different access rights.
• All PCs (users) are in the Default group, unless assigned to another group on the Host IP screen.
Figure 23: Access Filter
Settings – Block URL
Setup Access Group
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This allows you have different access rights for different Groups of PCs.
• If you want the same restrictions to apply to everyone, select Default for the Group. In this case, there is no need to enter any Hosts on the Host IP screen.
• If you wish to apply different restrictions on different Groups, select the desired Group, and click the "Select" button. The screen will update with data for the selected Group.
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Filter Setting
Block Well-known ports
User-defined Ports to Block
Select the desired option for this Group:
• No filtering – Nothing is blocked, Internet access is not restricted.
• Block All Access – Everything is blocked, Internet access is not
available.
• Block selected items – Items selected on this screen are blocked. You can block well known services by using the checkboxes, or define your own filters.
Select the services you wish to block. The current group will not be able to use any services which are checked.
This section is optional. It allows you to define your own filters if required. For each filter, the following information is required.
• Name – Enter a meaningful name for this filter.
• TPC/UDP Packets – Select either TCP or UDP, depending on
which protocol is used by the service you wish to block.
• Port No. Range – Enter the range of port numbers used by the service you wish to block. If only a single port is required, enter it in both fields.
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Session Limit

This new feature allows to drop the new sessions from both WAN and LAN side. If the new
sessions number are exceed the maximum sessions in a sampling time.
Session Limit
Sampling Time
Maximum of Total New session
Maximum of New Sessions for Host
Maximum of Dropped New Sessions for Host
Pause Time
Figure 24: Session Limit
The period to count the new session. Only those new sessions occurred in the most recently sampling time were be count for limit checking.(Default is 400 mil-sec)
If the number of new sessions for system exceed the maximum in the Sampling Time. Any new sessions in the system will be dropped. (Default: 65535 session/sec)
If the number of new sessions for the host exceeds the maximum in the sampling time. Any new session of the host will be dropped. (Default: session/sec)
If the number of dropped new sessions for the host exceeds the Maximum in the sampling time, any new session of the host will be dropped for the pause time.
Within the pause time, no new session of the suspended host could be served by system.( Default is 5 minutes)
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Firewall Exception

System Firewall Exception Rules: The rules with which any received packets is complied, the packets will not processed by Firewall or NAT module, but to be processed directly by system protocol stack.
Firewall Exception
Enable Interface
Protocol
Foreign Port Range
Device Port Range
Figure 25: Firewall Exception
The check box can allow you enable or disable firewall exception. You can select LAN, WAN1, WAN2 or ALL interfaces to be process by
the system protocol stack. If you enable check box. There are six protocols (UDP/TCP/ICMP/GRE/ESP/AH) to choose to let
packets directly process by the system protocol stack. Select foreign port number range directly process by system protocol
stack. If enable check box. Select device port number range directly process by system protocol
stack. If enable check box.
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6: QoS Configuration

Overview

The Load Balancer provides QoS, which supports the high quality of network service. Because it will classify outgoing packets based on some policies defined by users, make some real-time applications to get better response or performance.

QoS Setup

The following web page management are guiding you how to setup QoS and make QoS work.
Figure 26 QoS Setup
Data – QoS Setup.
QoS Feature
48
Enable QoS – This will allow users enable QoS function.
• Queuing Method – The methods that how you manage your queue.” Priority queuing”. It is one of the first queuing variations to be wildly implemented.
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IP TOS ( Type of Service) Feature
• Process TOS Field –An 8 bits field in the IP packet header designed to contain values indicating how each packet should be handled in the network. If you choose "enable" then it will enable this function to process IP Type of Service field.
• Overwrite policy priority – Choose “yes” to set the priority of TOS field in IP packet overwrite the priority defined in policy configuration

Policy Configuration

When you use QoS, you must define some policies to make some packets to have higher priority to pass through.
Figure 27 Policy Configuration
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Data – Policy Configuration.
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Network Admission Policy
This section identifies each policy
• Policy Name List – When adding a new Policy, ignore this list. To edit an existing entry, select it from the list, and click the "Select" button. The data fields will then be updated with data for the selected entry.
• Policy Name – Enter a suitable name. Generally, you should use the "Policy Name" for the network traffic.
• Source Address – Define the source address of packets here. It has two types like IP address or MAC address. If you select IP address, you can define IP address range, otherwise define up to four MAC addresses.
• Destination Address – Define the destination address of packets here. The explanation is as the same as above.
• Protocol Type – The field defines traffic packet type, i.e. IP,TCP and UDP.
• Source Port – Define the source port of packets here.
• Destination Port – Define the destination port of packets here.
• Priority Queue – It defines a packet if it meets all conditions defined above, it
will be serviced with some priority level.
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7: Management Assistant

Overview

The following advanced features are provided.
• SNMP
• Email Alert
• SNMP
• Syslog
• Upgrade Firmware
This chapter contains details of the configuration and use of each of these features.

SNMP

This section is only useful if you have SNMP (Simple Network Management Protocol) software on your PC. If you have SNMP software, you can use a standard MIB II file with the Load Balancer.
Figure 28 SNMP
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Settings – SNMP
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System Information
Trap Targets
• Contact Person – The name of the person responsible for this device.
• Device name – The name of the Load Balancer.
• Physical Location – The location of the Load Balancer.
Enter the IP address of any targets (PCs running SNMP software) to which you want traps to be sent. All traps are level 1.

Email Alert

This feature will send an warning Email, inform system administrator that one of the WAN ports was disconnected.
Email Alert – You can choose to enable or disable it to send a warning email. Email Sender Address – It is an email address which will send the warning email. Email (SMTP) Server Address – It is an email server address the warning email will be sent to. Email Recipient Address – It is an email address of system administrator the email will be sent to.
Figure 29 Email Alert
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Settings – Email Alert
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Email Alert
Email Sender Address
Email (SMTP) Server Address
Email Recipient Address
Excessive Ping Notification
• Enable – This will enable email alert to send an warning email when WAN port was disconnected.
• Disable – This will disable email alert not to send an warning email when WAN port was disconnected.
Email Sender Address- It is an email address that sends a warning email to a recipient. Inform that a recipient checks if there is any problem on WAN ports or not. Email (SMTP) Server Address - It is an email sever a warning email will be sent to. If you are enabled email alert. For example: mail.domain.com. Email(SMTP) server user name – This is the user name of email sender for authentication (optional). Email(SMTP)server password - This is the user password
It is an email sever a warning email will be sent to. If you are enabled email alert. For example: mail.domain.com
It is an email address a warning email will be sent to. Usually it is system administrator email address. For example: admin@mail.domain.com
This feature is useful to prevent ICMP attack from WAN or LAN. It will drop the packets if the ping times are excessive the threshold value. It will send email to the administrator, if email is enabled.
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Syslog

This feature can send real time system information on the web page or to the specified PC.
Syslog Configuration – Syslog Configuration allow you where to send system information to other machine or not. There are up to three machines you can choose to send your system log.
Message Status– Messages send only keep when “keep send message” checked. Currently we keep last 100 messages in the RAM area, they will clear when reboot or power off.
Figure 30 Syslog
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Syslog Configuration
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Syslog Global
Keep Sent Messages
Syslog Server
• Enable – Set to “enable”, if you want to send system log messages to other machine.
• Enable – Checked this, if you want to keep sent messages,otherwise the sent messages will be deleted.
• IP address: Up to 3 syslog servers can be used.
• Enable: You can enable or disable each server temporarily.
• Port: If your syslog server does not use the default port, you can change
it.
• Log Priority Level: The syslog messages are divided into 8 levels, from Emergency to Debug level. The lower level, the less messages will be generated. Emergency is the lowest priority level, and Debug is the highest one.
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Admin Password

The password screen allows you to assign a password to the Load Balancer.
Figure 31: Admin Password Screen
Enter the desired password, re-enter it in the Verify Password field, then save it. When you connect to the Load Balancer with your Browser, you will be prompted for the password
when you connect, as shown below.
Figure 32: Password Dialog
• Enter "Admin" for the User Name.
• Enter the password for the Load Balancer, as set on the Admin Password screen above.
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Upgrade Firmware

This Upgrade Firmware Screen allows you to upgrade firmware or backup system configuration by using HTTP upgrade.
Figure 33: Firmware Upgrade Screen
You can backup your system configuration by press “save” button of Save System Configuration.
It will save the system configuration for you. (Notice: You have to refresh the browser after you saved the system configuration file)
You also can do firmware upgrade by input the correct password and the file name of your
firmware. Remember do not Reset or Restart the device while update new firmware, because it may cause system to crash.
i
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8: Advanced LAN Configuration

Overview

These screens and settings are provided to deal with non-standard situations, or to provide additional options for advanced users.

Existing DHCP Server

If your LAN already has a DHCP Server, and you wish to continue using it, the following configuration is required.
• The DHCP Server function in the Load Balancer must be disabled. This setting is on the LAN & DHCP screen.
• Your DHCP Server must be configured to provide the Load Balancer's LAN IP address as the "Default Gateway".
• Your DHCP Server must provide correct DNS addresses to the PCs.

Routing

This section is only relevant if your LAN has other Routers or Gateways.
• If you don't have other Routers or Gateways on your LAN, you can ignore the Static Routing page completely.
• If your LAN has other Gateways and Routers, you must configure the Static Routing screen as described below. You also need to configure the other Routers.
Figure 34: Static Routing
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1
Note:
If there is an entry or entries in the Routing table with an Index of zero ( 0 ), these are System entries. You can not modify or delete these entries.
Settings – Static Routing
Entry Index
Network Address
Netmask
Gateway
Interface
Metric
• If adding a new entry, ignore this field.
• To edit an existing entry, select it from the list, and click the "Select" button.
The screen will then update with the data for the selected entry.
• If the Index is 0, this is a System entry which you can neither delete nor modify.
The network address of the remote LAN segment. For standard class "C" LANs, the network address is the first 3 fields of the Destination IP Address. The 4th (last) field can be left at 0.
The Network Mask for the remote LAN segment. For class "C" networks, the default mask is 255.255.255.0
The IP Address of the Gateway or Router which the Load Balancer must use to communicate with the destination above. (NOT the router attached to the remote segment.)
Select the correct interface, usually "LAN". The "WAN" interface is only available if NAT (Network Address Translation) is disabled.
The number of "hops" (routers) to pass through to reach the remote LAN segment. The shortest path will be used.

Configuring Other Routers on your LAN

All traffic for devices not on the local LAN must be forwarded to the Load Balancer, so that they can be forwarded to the Internet. This is done by configuring other Routers to use the Load Balancer as the Default Route or Default Gateway, as illustrated by the example below.

Static Routing - Example

Segment
(192.168.2.xx)
(192.168.2.90)
(192.168.2.80)
Router B
(192.168.3.70)
(192.168.1.100)
Router A
Segment 2
(192.168.3.xx)
Figure 35 Routing Example
(192.168.1.1)
Segment 0
(192.168.1.xx)
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For the Load Balancer Gateway's Routing Table
For the LAN shown above, with 2 routers and 3 LAN segments, the Load Balancer requires 2 entries as follows.
Entry 1 (Segment 1)
Destination IP Address
Network Mask 255.255.255.0 Gateway IP Address 192.168.1.100 Interface LAN Metric 2
Entry 2 (Segment 2)
Destination IP Address
Network Mask 255.255.255.0 (Standard Class C) Gateway IP Address 192.168.1.100 Interface LAN Metric 3
For Router A's Default Route
Destination IP Address
192.168.2.0
192.168.3.0
0.0.0.0
Network Mask 0.0.0.0 Gateway IP Address 192.168.1.1 Metric 2
For Router B's Default Route
Destination IP Address
Network Mask 0.0.0.0 Gateway IP Address 192.168.2.80 Interface LAN Metric 3
0.0.0.0
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9: Operation and Status

Operation

Once both the Load Balancer and the PCs are configured, operation is automatic. However, there are some situations where additional Internet configuration may be required: Refer to Chapter 4 - Advanced Features for further details.

System Status

Use the System Status link on the main menu to view this screen.
Figure 36: System Status
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Data – System Status
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WAN Information
LAN Information
• Connection Status – Current status – either "Connected" or "Not connected".
• Connection Type – The type of connection used – DHCP, Fixed IP, PPPoE,
or PPTP.
• "Force Renew" button– Only available if using a dynamic IP address (DHCP). Clicking this button will perform a DHCP "Renew" transaction with the ISP's DHCP server. This will extend the period for which the current WAN IP address is allocated to you.
• IP Address – The IP address of the Load Balancer, as seen from the Internet. This IP Address is allocated by the ISP (Internet Service Provider)
• Subnet Mask – The Network Mask (Subnet Mask) for the IP Address above.
• Domain Name IP Address – The address of the current DNS (Domain Name
Server.
• MAC Address – The MAC (physical) address of the Load Balancer, as seen from the Internet.
• IP Address – The LAN IP Address of the Load Balancer.
• Subnet Mask – The Network Mask (Subnet Mask) for the IP Address above.
• MAC Address – The MAC (physical) address of the Load Balancer, as seen
from the local LAN.
Device Information
Device Statistics
• DHCP Server – The status of the DHCP Server function - either "Enabled" or "Disabled".
• Firmware Version – Version of the Firmware currently installed.
• NAT – Status of the NAT feature – either “Enable” or “Disable”.
• Load Balance – Status of the Load Balance feature – either “Enable” or
“Disable”.
• Virtual Server – Status of the Virtual Server feature – either "Enabled" or "Disabled".
• Special Applications – Status of the Special Applications feature – either "Enabled" or "Disabled".
• DMZ – Status of the DMZ feature – either "Enabled" or "Disabled".
• Block URL – Status of the Block URL feature – either “Enable” or “Disable”.
• Hardware ID – The manufacturers ID for this particular device.
• System UpTime – The time since the system of a device was last
reinitialized.
• CPU Usage – The current usage percentage of CPU.
• Memory Usage – The current usage percentage of Memory (Heap & Queue).
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Buttons
• Refresh – Update the data on screen.
• Restart – Restart (reboot) the Load Balancer.
• Restore Factory Defaults – This will delete all existing settings, and restore
the factory default settings. See below for details.

Restore Factory Defaults

When the "Restore Factory Defaults" button on the Status screen above is clicked, the following screen is displayed.
Figure 37: Restore Factory Defaults
If the "Restore Default Value" button on this screen is clicked:
• ALL of your settings will be erased.
• The default IP address, password and ALL other settings will be restored to the factory default
values.
• The DCHP server function will be enabled. These changes may mean that the current connection is invalid, and you will have to re-connect to
the Load Balancer using its default IP address (192.168.1.1).
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WAN Status

Use the WAN Status link on the main menu to view this screen.
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Data – System Status
NAT Statistics
Interface Statistics
This section displays data for each WAN port.
• Connection status – This will display either Connected or Not Connected.
• Default Loading Share - The default traffic loading between the WAN ports.
• Current Loading Share – The current traffic loading between the WAN ports.
• Current Loading – The number of sessions, Bytes and Packets currently
being processed on each port.
• Current Bandwidth – The current Download and Upload speeds on each WAN port.
• "Check NAT Detail" will display the NAT Status screen, described below.
This section displays cumulative statistics. Use the "Restart Counter" button to restart these counters when required.
Figure 38 WAN Status
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NAT Status

This screen is displayed when you click the "Check NAT Detail" button on the WAN Status screen.
Data – NAT Status
LAN IP Info
Active WAN IP Info
NAT Timeouts TCP Prosperity
NAT Traffic
Figure 39 NAT Status
• IP Address – The LAN IP Address of the Load Balancer.
• Mask Address – The Network Mask (Subnet Mask) for the IP Address
above.
There is one (1) row for each active connection. For each connection, the following data is shown.
• IP Address – The WAN (Internet) IP Address of the Load Balancer.
• Mask Address – The Network Mask (Subnet Mask) for the IP Address
above This displays the current timeout values for TCP and UDP connections. This displays the MSS (Maximum Segment Size) and Maximum Windows
size for TCP packets. This section displays statistics for both outgoing (LAN to Internet) and
Incoming (Internet to Local) traffic.
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NAT Connections
Errors
Misc.
This displays the current number of active connections. For further details, click the "View Connection" list button.
Statistics are displayed for Checksum errors, number of retries, and number of bad packets.
This displays the total IP packets and reserved address.
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Appendix A
Specifications
Model Load Balancer Dimensions 245mm (W) x 137mm (D) x 30mm (H)
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Operating Temperature
Storage Temperature
Network Protocol:
Network Interface:
LEDs 8 LAN
External Power Adapter
0° C to 40° C
-10° C to 70° C
TCP/IP
6 Ethernet: 4 * 10/100BaseT (RJ45) auto-Switching Hub ports for LAN devices 2 * 10/100BaseT (RJ45) for WAN
4 WAN 1 Status 1 Power
5 V 1.5A DC
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.
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Appendix B
Windows TCP/IP Setup
Overview TCP/IP Settings
If using the default Load Balancer settings, and the default Windows 95/98/ME/2000 TCP/IP settings, no changes need to be made.
• By default, the Load Balancer will act as a DHCP Server, automatically providing a suitable IP Address (and related information) to each PC when the PC boots.
• For all non-Server versions of Windows, the default TCP/IP setting is to act as a DHCP client.
• If you wish to check your TCP/IP settings, the procedure is described in the following sections.
• If your LAN has a Router, the LAN Administrator must re-configure the Router itself. Refer to
Chapter 5 – Advanced LAN Setup for details.

Checking TCP/IP Settings - Windows 9x/ME:

1. Select Control Panel - Network. You should see a screen like the following:
Figure 40: Network Configuration
2. Select the TCP/IP protocol for your network card.
3. Click on the Properties button. You should then see a screen like the following.
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Figure 41: IP Address (Win 95)
Ensure your TCP/IP settings are correct, as follows:
Using DHCP
To use DHCP, select the radio button Obtain an IP Address automatically. This is the default Windows settings.
Restart your PC to ensure it obtains an IP Address from the Load Balancer.
Using "Specify an IP Address"
If your PC is already configured, check with your network administrator before making the following changes:
• If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the DNS address or addresses provided by your ISP, then click OK.
• On the Gateway tab, enter the Load Balancer's IP address in the New Gateway field and click Add, as shown below. (Your LAN administrator can advise you of the IP Address they assigned to
the Load Balancer.)
Figure 42: Gateway Tab (Win 95/98)
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• On the DNS Configuration tab, ensure Enable DNS is selected. If the DNS Server Search Order list is empty, enter the DNS address provided by your ISP in the fields beside the Add button, then click Add.
Figure 43: DNS Tab (Win 95/98)

Checking TCP/IP Settings - Windows 2000:

1. Select Control Panel - Network and Dial-up Connection.
2. Right click the Local Area Connection icon and select Properties. You should see a screen like the following:
Figure 44: Network Configuration (Win 2000)
3. Select the TCP/IP protocol for your network card.
4. Click on the Properties button. You should then see a screen like the following.
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Figure 45: TCP/IP Properties (Win 2000)
5. Ensure your TCP/IP settings are correct:
Using DHCP
To use DHCP, select the radio button obtain an IP Address automatically. This is the default Windows settings.
Restart your PC to ensure it obtains an IP Address from the Load Balancer.
Using a fixed IP Address ("Use the following IP Address")
If your PC is already configured, check with your network administrator before making the following changes:
• Enter the Load Balancer's IP address in the Default gateway field and click OK. (Your LAN administrator can advise you of the IP Address they assigned to the Load Balancer.)
• If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the DNS address or addresses provided by your ISP, then click OK.
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Checking TCP/IP Settings - Windows XP:

1. Select Control Panel - Network Connection.
2. Right click the Local Area Connection and choose Properties. You should see a screen like the following:
Figure 46: Network Configuration (Windows XP)
3. Select the TCP/IP protocol for your network card.
4. Click on the Properties button. You should then see a screen like the following.
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Figure 47: TCP/IP Properties (Windows XP)
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5. Ensure your TCP/IP settings are correct.
Using DHCP
To use DHCP, select the radio button obtain an IP Address automatically. This is the default Windows settings.
Restart your PC to ensure it obtains an IP Address from the Load Balancer.
Using a fixed IP Address ("Use the following IP Address")
If your PC is already configured, check with your network administrator before making the following changes.
• Enter the Load Balancer's IP address in the Default gateway field and click OK. (Your LAN administrator can advise you of the IP Address they assigned to the Load Balancer.)
• If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the DNS address or addresses provided by your ISP, then click OK.
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Appendix C
Troubleshooting

Overview

This chapter covers some common problems that may be encountered while using the Load Balancer and some possible solutions to them. If you follow the suggested steps and the Load Balancer still does not function properly, contact your dealer for further advice.

General Problems

Problem 1: Can't connect to the Load Balancer to configure it. Solution 1:
Check the following:
• The Load Balancer is properly installed, LAN connections are OK, and it is powered ON.
• Ensure that your PC and the Load Balancer are on the same network segment. (If you don't have a router, this must be the case.)
• If your PC is set to "Obtain an IP Address automatically" (DHCP client), restart it.
• If your PC uses a Fixed (Static) IP address, ensure that it is using an IP Address within the range 192.168.1.2 to 192.168.1.254 and thus compatible with the Load Balancer’s default IP Address of 192.168.1.1. Also, the Network Mask should be set to 255.255.255.0 to match the Load Balancer. In Windows, you can check these settings by using Control Panel-Network to check the Properties for the TCP/IP protocol.

Internet Access

Problem 1: When I enter a URL or IP address I get a time out error. Solution 1:
A number of things could be causing this. Try the following troubleshooting steps.
• Check if other PCs work. If they do, ensure that your PCs IP settings are correct. If using a Fixed (Static) IP Address, check the Network Mask, Default gateway and DNS as well as the IP Address.
• If the PCs are configured correctly, but still not working, check the Load Balancer. 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 Load Balancer 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 Load Balancer. Solution 2:
The Load Balancer processes the data passing through it, so it is not transparent.
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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 DMZ function. This should work with most applications, but:
• It is a security risk, since the firewall is disabled for the DMZ PC.
• Only one (1) PC can use this feature.
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