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Configuring NetGuardian via USB Craft Port

Problem: Unable to configure NetGuardian IPA via USB craft port


NetGuardian 480



In order to use the NetGuardian’s web interface, you’ll first have to configure the unit’s IP address, subnet mask, and default gateway.  To do this, you must establish a physical connection to your NetGuardian and configure the unit using the TTY interface.


This “techno knowledge” paper will help you if:

q You’re attempting to install the driver for your NetGuardian

q You need to identify the NetGuardian’s emulated COM port

q You’re having trouble configuring the unit using HyperTerminal





Quick Reference Chart

(For details, review the troubleshooting checklist, starting on the next page)


Quick Reference Chart






Troubleshooting Checklist


1 Connect the NetGuardian to a PC using a USB cable


q Connect the NetGuardian’s USB craft port to any computer with a terminal emulator such as HyperTerminal.  (All Windows-based PCs should have HyperTerminal.)


USB Cable to NetGuardian


Note: Make sure you’re using a standard USB A-B cable.  This is the same cable commonly used for connecting a printer to a PC.  If you don’t have the proper USB cable, you can order one directly from DPS Telecom.



2  Install the NetGuardian’s USB Driver on your PC


q You should see a “Found New Hardware” message.


Found New Hardware


q Click the “Found New Hardware” message to launch the “Found New Hardware Wizard.


Found New Hardware Wizard


q Select “Install from a list or specific location (Advanced)”


q Click “Next >”


Found New Hardware Wizard


q Select “Search for the best driver in these locations”


q Insert your NetGuardian Resource Disk into your PC



q Click “Browse”


Browse for File


q In the “Browse for File” prompt, select the Driver folder of your NetGuardian 480 G3 Resource Disk and click “OK”.   


q You should see a message requiring you to confirm the installation of a new “USB Communications Port”


Found New Hardware Wizard


q Click “Finish” to close the wizard.



3 Now that the driver has been installed, a new COM port is being emulated on your PC.  To connect to the NetGuardian using HyperTerminal, you must first Use Windows Device Manager to Confirm the Identity of the New “Virtual” COM Port.


q Right-click the “My Computer” icon on your desktop or in your start menu (depending on your version of windows and other properties).


q Select “Manage”


Manage My Computer


q Click “Device Manager” in the left pane of the Computer Management window


Device Manager


q Expand the “Ports (COM & LPT)” section in the right pane.  Look for USB Communications Port (COMx).  Note the number of the COM port (COM3 in the example above).


4 Now that you know which COM port to use, it’s time to Connect to the NetGuardian using HyperTerminal.  You may use other terminal emulation software if you choose, but this Techno Knowledge Paper focuses on HyperTerminal.


q Click on the Start menu > select Programs > Accessories > Communications > HyperTerminal.


Start Menu HyperTerminal




q At the Connection Description screen, enter a name for this connection.  You may also select an icon.  The name and icon do not affect your ability to connect to the unit.


Connection Description



q At the Connect To screen, use the drop-down menu to select the COM port you found earlier in the Device Manager.


Connect to COM port



q Select the following COM Port Options:

o Bits per second: 9600

o Data bits: 8

o Parity: None

o Stop bits: 1

o Flow control: None


q Click Apply


q Once connected, you will see a blank, white HyperTerminal screen.  Press Enter.




q You will be prompted for the user name and password.  Enter admin for the Login and dpstelecom for the password.


Note: If you don’t receive a prompt for the Login and Password, return to step two to confirm the COM port being used for the NetGuardian. 



5 The NetGuardian’s main menu will appear.  Here you can Configure the NetGuardian’s IP Address Using HyperTerminal.


IP Adress using HyperTerminal



q Type C for C)onfig, then E for E)thernet


q Configure the unit’s IP Address, subnet mask, and default gateway.


Configure settings


q Press ESC to return to the main menu. 


q When asked if you’d like to save your changes, type Y for Y)yes


q Reboot your NetGuardian to save its new configuration.


Now you’re ready to finish configuring the NetGuardian via LAN using the web interface.  For help regarding the web interface, see your NetGuardian manual.



If you continue having trouble, please contact DPS Telecom tech support at (559) 454-1600 or support@dpstele.com.