NetComm NB750 User Manual
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NetComm NB750 User Manual

NetComm NB750 User Manual

Load balancing router
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Summary of Contents for NetComm NB750

  • Page 2: Table Of Contents

    Special IP Assignment..39 3.11 Advance ... 40 3.11.1 Remote Configure ... 40 3.11.2 Virtual Server / VPN Pass Through /ALG options ... 41 3.11.3 DMZ Host ... 43 3.11.4 Multi-NAT ... 45 NB750 Load Balancing Router User Guide YML817 Rev1...
  • Page 3 Save & Reset ... 58 Appendix A: TCP/IP Protocol Port Number List ... 59 Appendix B: Load Balancing Router Specification ... 60 Appendix C: Cable Information ... 65 Appendix D: Registration and Warranty Information ... 67 NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 4: Chapter 1. Introduction

    ADSL modem or CABLE modem, so the user can download or upload data at high speed. The NB750 provides one LAN port to connect to a computer via a cable. You can also connect the LAN port to a HUB/SWITCH device to extend the amount of connection devices/users if necessary.

  • Page 5: Package Contents

    1 x Network cable with RJ-45 connectors for LAN connection When you open your package, make sure all of the above items are included and not damaged. If any components are missing or damaged, please contact NetComm immediately. NB750 Load Balancing Router User Guide...

  • Page 6: Hardware

    LEDs POWER ALARM WAN1 / WAN2 LAN 10M/100M Indication Power on Power off System not working Normal operation Linked Flash Data Transmitting Disconnected or undetected Linked Flash Data Transmitting Disconnected or undetected NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 7: Rear Panel View

    Factory Reset: 1.2.3 Hardware Load Default If you need to reset the NB750 to factory default values or load the latest configuration file, please follow the description step by step to load the factory default settings or latest configuration file for the device.

  • Page 8: Features

    1.3 Features 1.3.1 Software Feature In order to meet different application usage, you can configure this router in any of three different working modes: 1. Gateway mode 2. Router mode 3. Basic NAT mode (NAT Table up to 5000 entries)
  • Page 9 DMZ Host Multi-NAT IP Binding Load Balance Dynamic DNS Mail Alert Time Zone System Log Mac Address Clone Configure Proxy Routing protocol DOD (PPPoE) Bandwidth Usage Control NB750 Load Balancing Router User Guide YML817 Rev1 Mode Gateway Router Basic NAT...

  • Page 10: Factory Default Value

    URL Filtering Advance Remote Config Virtual Server DMZ Host Multi-NAT IP Binding DDNS Proxy Mail Alert Time Zone System Log MAC Address Clone Value Default Enable Internet Dynamic IP X (Some items) NB750 Load Balancing Router User Guide Disable YML817 Rev1...
  • Page 11 Administration Password Backup & Restore Load Factory Default Display Save & Reset NB750 Load Balancing Router User Guide YML817 Rev1 Load Default...

  • Page 12: How To Configure Router

    This equipment provides three working modes for various usages. In order to set the proper parameters in each function/mode, you can follow this flow chart before you start to configure the router. NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 13: Chapter 2. Connection

    CHAPTER 2. CONNECTION Connection Diagram The NB750 provides one LAN port connected to your network devices such as a PC, HUB or SWITCH via a RJ45 cable. Using a HUB/SWITCH allows more PCs to connect to the NB750. WAN ports are used to connect your ADSL or CABLE Modem to the broadband ISP.

  • Page 14: Prepare Computer Tcp/Ip Environment

    5. If Internet Protocol (TCP/IP) does not display as an installed component, click Add… 6. In the Select Network Component Type dialog box, select Protocol, and then click Add… 7. Select Microsoft in the Manufacturers box. NB750 Load Balancing Router User Guide YML817 Rev1...
  • Page 15 11. In the TCP/IP Properties dialog box, click the IP Address tab. 12. Click the radio button labelled Obtain an IP address automatically. 13. Click OK twice to confirm and save your changes. You will be prompted to restart Windows. 14. Click Yes. NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 16: Chapter 3 Configuration

    Routing Table • Access Control • • Load Balance • Advance • Administration • Firmware Update • Save & Reset The welcome page and various configuration menus are displayed overleaf. Figure 1 Login NB750 Load Balancing Router User Guide YML817 Rev1...
  • Page 17 You can select various functions listed in the left-hand side of the Welcome display. You are advised to change your password immediately. Advice on managing your password can be found in the section 3.12.1. NB750 Load Balancing Router User Guide YML817 Rev1 Figure 2 Welcome...

  • Page 18: Work Mode

    Note: Once you have selected the “Work Mode” and click “OK”, you will need to power off the NB750 by unplugging the power adapter and then powering it on again for the settings to take effect. Figure 3 Work Mode...
  • Page 19 DMZ Host Multi-NAT IP Binding Load Balance Dynamic DNS Mail Alert Time Zone System Log Mac Address Clone Configure Proxy Routing protocol DOD (PPPoE) Bandwidth Usage Control NB750 Load Balancing Router User Guide YML817 Rev1 Mode Gateway Router Basic NAT...

  • Page 20: System Status

    Shows the information of MAC Address, IP Address, and Subnet Mask on each or all WAN ports. Version of software and its release date. Shows the information of MAC Address and IP Address. NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 21: Data Monitor

    Accumulated packets in each WAN port Data Counter Usage: Example: WAN1 usage% = WAN1 total packets NB750 Load Balancing Router User Guide YML817 Rev1 Figure 5 Data Monitor % of total packet sent through each WAN port (WAN1+WAN2) total packets...
  • Page 22 When the counter reaches its upper limit (4294967K) it will reset from 0 automatically. List current user detail NAT data. Update data monitor table to display newest data Reset Data Counter. Data will accumulate again from zero. NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 23: Wan Configuration

    If the Health Check is enabled, the NB750 will check the ADSL link automatically to ascertain whether or not the link is alive. Should the link fail, the NB750 will switch packets to another existing link (except TCP packet). The router will switch back to the ADSL link as soon as possible.
  • Page 24 DOD function is enabled or not. WAN SPEED: you need to enter the speed of each WAN port (in Load Balance Traffic Mode or Bandwidth Usage Control), otherwise the NB750 will not work properly. WAN Link Mode: You can choose the WAN port work mode with an ADSL modem •...

  • Page 25: Dynamic Ip Connect To Cable Modem

    0. This default value lets the NB750 remain connected all the time unless disconnected by the user manually, or by the ISP. If you define the period as 3, the NB750 will automatically be disconnected after idling for 3 minutes.

  • Page 26: Static Ip/Leased Dsl Type

    If you select [Static IP/Leased DSL], you will need to input the IP Address, Subnet Mask, Primary DNS, Secondary DNS and Gateway provided by your ISP. The picture below is an example of a static IP’s settings. Figure 8 Static IP NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 27: Bandwidth Usage Control

    Protocol: Port: Usage: The percentage of Protocol usage cannot exceed 100% for each WAN port. The NB750 provides another 4-user self-defined port number for easy use. Just fill in the port number for each protocol. NB750 Load Balancing Router User Guide...

  • Page 28: Configure Lan&Dhcp

    You can choose whether or not to use a Dynamic Host Configuration Protocol (DHCP) server. DHCP allows the NB750 to dynamically assign IP addresses to network devices. Dynamic IP assignment alleviates the need for the network administrator to maintain and monitor IP address assignments.

  • Page 29: Routing Table

    (Domain A), and the other connected to another Server (Domain B). Users need to set the static routing path in the NB750 to let it recognize that there is another domain in this area. These settings enable the packets from Domain A to reach the destination in Domain B via the gateway configured in the NB750.

  • Page 30: Current Table

    3.7.2 Current Table This display shows the valid routing paths in the NB750. Users can view the information about current routing paths. Figure 13 Routing Table NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 31: Access Control

    3.8 Access Control 3.8.1 Local IP Filtering (Gateway Mode only) The NB750 allows you to restrict access by either blocking or allowing outgoing IP packets by protocol (port number). You may restrict some IP’s to perform limited protocols or allow them to execute partial protocols.

  • Page 32: Remote Ip Filtering (Gateway Mode Only)

    Port and IP address can accept digits 0-9, “,” and “-“ only. 3.8.2 Remote IP Filtering (Gateway Mode only) The NB750 allows you to restrict user access using the Remote IP Filter function. You may restrict some destination IP addresses.

  • Page 33: Intrusion Security

    Tick Enable option to enable this feature. You can add users in the authorization list. Simply click Add button and then fill in the MAC address and IP address. The NB750 checks MAC addresses and IP addresses of any access. If both addresses match, the access is passed.
  • Page 34 * Some viruses use the “PING” command to attack a network. The NB750 can be defined to accept or reject the “PING” command from WAN or LAN. Function IP Fragments Checking IP Address spoofing Oversized Ping Port Scan TCP SYN Flooding (WAN)

  • Page 35: Url Filtering

    UDP Flooding (WAN) UDP Flooding (LAN) 3.8.5 URL Filtering Besides restricting users by local/destination IP, the NB750 also provides you with access restriction for users by URL. You may restrict some URL addresses that are not allowed to be reached.

  • Page 36: Qos

    Download speed. Upload speed. Which WAN you want the allocation to use. (Do not use this option to specify which WAN to use for this user.) NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 37: Load Balance

    The session in each WAN can be numbered from 1 to 100. The suggested number is 1 ~ 10. If rate is 1:1 for each WAN port, the NB750 function will act like Session mode NB750 Load Balancing Router User Guide...
  • Page 38 Dynamic Traffic Mode: The NB750 will find the lowest loading WAN port to transmit and receive data automatically. You need to enter the correct ADSL/CABLE WAN speed. The NB750 checks the available bandwidths in all WAN ports periodically then assigns the next session to a WAN port according to current situations and the speed settings in all WANs.

  • Page 39: Special Application

    Some Internet WEB servers do not grant access to multi WAN addresses. These WEB servers may also use dynamic IP addresses. In this case, the NB750 can let you define a dedicated port number to go to a dedicated WAN port. The dedicated port is used to access these special WEB Servers.

  • Page 40: Advance

    To access the NB750 from the LAN: Type 192.168.1.1 in the URL field of your browser. To access the NB750 from the Internet: Type the WAN port IP address in the URL field. The NB750 provides easy access to the Internet via “Dynamic IP” & “Dynamic port”.

  • Page 41: Virtual Server / Vpn Pass Through /Alg Options

    LAN, this function can help you to do this. The NB750 includes a global port & local port mapping function. You can easily configure an internal server with the same port number mapping on to a WAN IP with a different port number.
  • Page 42 Supposing you want to have four servers providing FTP, HTTP, Mail and Telnet services, you must enter four virtual servers and enable them. If users key in ftp://203.74.94.30, the NB750 will send the data of FTP protocol to the server of 192.168.1.10.

  • Page 43: Dmz Host

    Virtual Server Host will be mapped into this internal DMZ host. For example, if your WAN1 uses a PPPoE connection to obtain a public IP address, the NB750 will let a data packet with the destination address pointing to WAN1 pass through into the DMZ Host when the port number of the packet does not exist in Virtual Server Host table.
  • Page 44 WAN IPs, you can assign which WAN IP corresponds to which IP on your LAN. This assignment will allow most protocols to access the assigned IP on the LAN. The following figure is an example. Figure 30 Multi-DMZ example NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 45: Multi-Nat

    (Total 10 LAN IP can be defined). After configuring multiple NAT functions, it will act like you have a virtual router connected to the NB750 LAN port and then all traffic between each LAN IP domain will send and receive through the NB750. It will provide following benefit: •...

  • Page 46: Ip Binding (Protocol Route Control)

    The packet of specific protocol port number will be restricted The protocol port number starts from 0 and goes to 65535. You can decide what range of port numbers will be restricted. If you enter: NB750 Load Balancing Router User Guide YML817 Rev1...
  • Page 47 Start port Blank Packet type belonging to protocol 21(FTP) and going to any Internet Host will be restricted to designated WAN1. NB750 Load Balancing Router User Guide YML817 Rev1 all packets will be restrict to dedicated WAN port blank all packets will be restrict to dedicated WAN port...

  • Page 48: Ddns (Gateway Mode / Basic Nat Mode Only)

    You need to apply for a free DNS domain name from www.dyndns.org. The NB750 will update the WAN IP address to DDNS’s database once a WAN port is connected to the Internet if the DDNS function is enabled. Internet users can find the NB750 via this domain name.

  • Page 49: Mail Alert (Gateway Mode / Basic Nat Mode Only)

    Send by Direct send: Mail server forward: Example: The “log record” is 50. When the condition happens 50 times, the NB750 will send 50-log messages together to the Receiver. “log record” range : 10~150. NB750 Load Balancing Router User Guide...

  • Page 50: Time (Gateway Mode / Basic Nat Mode Only)

    Otherwise the new time server setting will be lost after the reboot. The PC can be used to synchronize the NB750 to the time set in the configuration of the PC. This is for temporary use especially if neither time server is unavailable. Once the reboot occurs, the NB750 will try to synchronize to a time server again.

  • Page 51: System Log

    3.11.10 System Log When the NB750 powers on, it will show all the records, such as WAN port up/down, WAN IP address, the obtained time, DDNS current corresponding WAN IP address and so forth. You can use the page saving function of your browser to save the log details.
  • Page 52 Set WAN PORT MAC Address Equal PC MAC Address Duplicate the MAC address to the MAC address in each WAN port. Remove all Ethernet cables on the NB750 LAN port except for the PC you want to clone. Then press OK when you are ready.

  • Page 53: Administration

    OK. The password will be changed to the new one after the re-boot. “Password length can up to 30 alphanumeric characters (case sensitive)” WE ADVISE YOU TO CHANGE THE NB750 PASSWORD AND KEEP IT IN A SAFE PLACE AFTER YOU RECEIVE THE NB750 AND FINISH ALL THE ROUTER PARAMETER SETTINGS.

  • Page 54: Load Factory Default

    file. Click OK after selection. The NB750 will restart automatically. Default Button Option This option is used to define Default button on the back panel of the NB750. • Load Default: press Default button and hold for 2 seconds, the factory default configuration will be loaded.

  • Page 55: Firmware Update

    The NB750 allows you to easily update the embedded firmware. We will occasionally provide new firmware on the web site to help you updating the firmware of your NB750. Follow the procedure to update your firmware after downloading the new code.
  • Page 56 OK. Figure 45 Fill in Server Name and File Name You will see the process of the update. After finishing the update procedure, you must reboot the NB750 to run new code. NB750 Load Balancing Router User Guide YML817 Rev1...
  • Page 57 Here we take v105.exe as the example of new version file. Click Search to find the IP of the NB750. The IP address of the NB750 is 192.168.1.1 (default value). Click Update to update the firmware. NB750 Load Balancing Router User Guide...

  • Page 58: Save & Reset

    3.14 Save & Reset In order to save the configuration changes that have been made to the NB750, you must save them to the NB750’s Flash memory. If you do not save the changes, the configuration settings will be lost in the event of a power loss or system reboot.

  • Page 59: Appendix A: Tcp/Ip Protocol Port Number List

    Appendix A: TCP/IP Protocol Port Number List Protocol Service TELNET SMTP TFTP GOTHER FINGER HTTP POP3 NNTP IMAP SNMP WAIS NB750 Load Balancing Router User Guide YML817 Rev1 Port no. Protocol Service LADP HTTPS RLOGIN SYSLOG TALK AFPOWERTCP Net-Meeting L2TP...

  • Page 60: Appendix B: Load Balancing Router Specification

    Internet services by automatically routing data to an active connection. The NB750 provides one LAN port to connect to a computer via a cable. You can also connect the LAN port with a HUB/SWITCH device to extend amount of connections/users if necessary.
  • Page 61 Out-bound Load Balance Protocol VPN pass through Routing Protocol Dynamic DNS Working mode Security NB750 Load Balancing Router User Guide YML817 Rev1 Provide 3 working modes - Session - Weight round robin - Dynamic Traffic - TCP/IP, UDP - ARP, BOOTP...

  • Page 62: Mail Alert

    - HTTP web based download /TFTP - Backup the configuration file into PC - Restore the saved configuration file into the device - Configure Router through Internet NB750 Load Balancing Router User Guide - Support both direct sending and Mail Server forwarding YML817 Rev1...
  • Page 63 Special IP assignment Special Port assignment VoIP pass through Protocol Bandwidth Control System data monitor NB750 Load Balancing Router User Guide YML817 Rev1 - Up to 2 WAN port - WAN port can connect to different IP domain gateway - Up to 2 WAN port...
  • Page 64 - -10 ~ 60 C (storage) - 180mm(W)*160mm(D)*50 mm(H) - Under 600g - 10 ~ 95% RH - +/- 4 KV - CE /FCC NB750 Load Balancing Router User Guide - LAN users can use WAN IP to reach virtual server YML817 Rev1...

  • Page 65: Appendix C: Cable Information

    If you are unsure about which cable to use or which socket to connect it to, please refer to the hardware installation section in this manual. If you are still not sure about cable connections, please contact a professional computer technician or NetComm for further advice. RJ-45 Network Ports RJ-45 Network Ports can connect any networking devices that use a standard LAN interface, such as a Hub/Switch Hub or Router.

  • Page 66: Straight And Crossover Cable Configuration

    Straight-Through Cabling Cross-Over Cabling Note: To prevent loss of signal, make sure that the length of any twisted-pair connection does not exceed 100 metres. Figure 3 Wire Becomes Figure 4 Wire Becomes NB750 Load Balancing Router User Guide YML817 Rev1...

  • Page 67: Appendix D: Registration And Warranty Information

    Guide. However some products have an extended warranty option (please refer to your packaging). To be eligible for the extended warranty you must supply the requested warranty information to NetComm within 30 days of the original purchase by registering on-line via the NetComm web site at: www.netcomm.com.au...

  • Page 68: Customer Information

    NetComm. Failure to do so may cause damage to this product, fire or result in personal injury.

  • Page 69: Limitations Of Warranty

    The warranty is automatically voided if: 1. You, or someone else, use the product, or attempts to use it, other than as specified by NetComm; 2. The fault or defect in your product is the result of a voltage surge subjected to the product either by the way of power supply or communication line, whether caused by thunderstorm activity or any other cause(s);...

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