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SonicWALL, Inc.


NetExtender

Using NetExtender

The following sections describe how to use NetExtender:

User Prerequisites

Windows clients must meet the following prerequisites in order to install NetExtender:

Internet Explorer Prerequisites

It is recommended that you add the URL or domain name of your SSL-VPN server to Internet Explorer's trusted sites list. This will simplify the process of installing NetExtender and logging in, by reducing the number of security warnings you will receive. To add a site to Internet Explorer's trusted sites list, complete the following procedure:

  1. In Internet Explorer, go to Tools > Internet Options.
  2. Click on the Security tab.
  3. Click on the Trusted Sites icon and click on the Sites... button to open the Trusted sites window.


  4. Enter the URL or domain name of your SSL-VPN server in the Add this Web site to the zone field and click Add.
  5. Click OK in the Trusted Sites and Internet Options windows.

User Configuration Tasks

SonicWALL NetExtender is a software application that enables remote users to securely connect to the remote network. With NetExtender, remote users can virtually join the remote network. Users can mount network drives, upload and download files, and access resources in the same way as if they were on the local network.

Installing NetExtender Using the Mozilla Firefox Browser

To use NetExtender for the first time using the Mozilla Firefox browser, perform the following:

  1. To launch NetExtender, first log in to the SSL-VPN portal.
  2. Click the NetExtender button.
  3. The first time you launch NetExtender, it will automatically install the NetExtender stand-alone application on your computer. If a warning message is displayed in a yellow banner at the top of your Firefox banner, click the Edit Options... button.
  4. The Allowed Sites - Software Installation window is displayed, with the address of the Virtual Office server in the address window. Click Allow to allow Virtual Office to install NetExtender, and click Close.
  5. Return to the Virtual Office window and click NetExtender again.
  6. The Software Installation window is displayed. After a five second countdown, the Install Now button will become active. Click it.
  7. NetExtender is installed as a Firefox extension.
  8. When NetExtender completes installing, the NetExtender Status window displays, indicating that NetExtender successfully connected.

By default, closing the window (clicking on the x icon in the upper right corner of the window) will not close the NetExtender session, but will minimize it to the system tray for continued operation. To configure NetExtender to disconnect when you close the NetExtender window, see the "Configuring NetExtender Preferences" section.

  1. Review the following table to understand the fields in the NetExtender Status window.
    Field
    Description

    Status

    Indicates what operating state the NetExtender client is in, either Connected or Disconnected.

    Server

    Indicates the name of the server to which the NetExtender client is connected.

    Client IP

    Indicates the IP address assigned to the NetExtender client.

    Sent

    Indicates the amount of traffic the NetExtender client has transmitted since initial connection.

    Received

    Indicates the amount of traffic the NetExtender client has received since initial connection.

    Duration

    The amount of time the NetExtender has been connected, expressed as days, hours, minutes, and seconds.

  2. Additionally, a balloon icon in the system tray appears, indicating NetExtender has successfully installed.
  3. The NetExtender icon is displayed in the task bar.

Installing NetExtender Using the Internet Explorer Browser

To use NetExtender for the first time using the Internet Explorer browser, perform the following:

  1. To launch NetExtender, first log in to the SSL-VPN portal.
  2. Click the NetExtender button.
  3. The first time you launch NetExtender, it will automatically install the NetExtender stand-alone application on your computer. The NetExtender installer window opens.
  4. If an older version of NetExtender is installed on the computer, the NetExtender launcher will remove the old version and then install the new version.
  5. If the following warning message is displayed, click Continue Anyway. SonicWALL testing has verified that NetExtender is fully compatible with Windows XP and 2000.
  6. When NetExtender completes installing, the NetExtender Status window displays, indicating that NetExtender successfully connected.

Launching NetExtender Directly from Your Computer

In SonicWALL SSL-VPN releases 1.5, 2.0, and later, you can launch NetExtender directly from your computer without first navigating to the SSL-VPN portal. To launch NetExtender, complete the following procedure:

  1. Navigate to Start > All Programs.
  2. Select the SonicWALL SSL-VPN NetExtender folder, and then click on SonicWALL SSL-VPN NetExtender. The NetExtender login window is displayed.
  3. The IP address of the last SSL-VPN server you connected to is displayed in the SSL-VPN Server field. To display a list of recent SSL-VPN servers you have connected to, click on the arrow.
  4. Enter your username and password.
  5. The last domain you connected to is displayed in the Domain field.
  6. Check the Connect automatically when service starts checkbox to have NetExtender automatically connect when you log on to Windows.
  7. Check the Remember password checkbox to preserve your password. This can be a security risk and should not be enabled if there is a chance that other people could use your computer to access sensitive information on the network.

Configuring NetExtender Preferences

Complete the following procedure to configure NetExtender preferences:

  1. Right click on the icon in the task bar and click on Preferences... The NetExtender Preferences window is displayed.
  2. The Connection Profiles tab displays the SSL-VPN connection profiles you have used, including the IP address of the SSL-VPN server, the domain, and the username.
  3. To delete a profile, highlight it by clicking on it and then click the Remove buttons. Click the Remove All buttons to delete all connection profiles.
  4. The Settings tab allows you to customize the behavior of NetExtender.
  5. To instruct NetExtender to automatically connect to an SSL-VPN server when NetExtender is launched, check the Automatically Connect with Connection Profile checkbox and select the IP address of the server from the pull-down menu of SSL-VPN servers.
  6. To instruct NetExtender to automatically start when you log on to Windows, check the Automatically start NetExtender UI checkbox in the When I log in to my computer section.
  7. To instruct NetExtender to display the NetExtender window when it connects after Windows logs on, check the Display NetExtender UI checkbox.
  8. Check the Minimize to the tray icon when NetExtender window is closed checkbox in the When I'm Using NetExtender UI section to have the NetExtender icon displayed in the system tray when you close the NetExtender window.
  9. To instruct NetExtender to disconnect when you close the NetExtender window, check the Disconnect an Active Connection checkbox in the When I exit NetExtender UI section.
  10. Select the Disconnect an active connection checkbox in the When I exit NetExtender UI section to have NetExtender disconnect when you close the NetExtender window.

Configuring NetExtender Connection Scripts

SonicWALL SSL-VPN release 2.0 provides users with the ability to run batch file scripts when NetExtender connects and disconnects. The scripts can be used to map or disconnect network drives and printers, launch applications, or open files or websites. To configure NetExtender Connection Scripts, perform the following tasks.

  1. Right click on the icon in the task bar and click on Preferences... The NetExtender Preferences window is displayed.
  2. Click on Connection Scripts.
  3. To enable the script that runs when NetExtender connects, select the Automatically execute the batch file "NxConnect.bat" checkbox.
  4. To enable the script that runs when NetExtender disconnects, select the Automatically execute the batch file "NxDisconnect.bat" checkbox.
  5. To hide either of the console windows, select the appropriate Hide the console window checkbox. If this checkbox is not selected, the DOS console window will remain open after the script runs.

Configuring Batch File Commands

NetExtender Connection Scripts can support any valid commands. For more information on batch files, see the following Wikipedia entry: http://en.wikipedia.org/wiki/.bat. The following tasks provide an introduction to some commonly used batch file commands.

  1. To configure the script that runs when NetExtender connects, click the Edit "NxConnect.bat" button. The NxConnect.bat file is displayed.
  2. To configure the script that runs when NetExtender disconnects, click the Edit "NxDisconnect.bat" button. The NxConnect.bat file is displayed.
  3. By default, the NxConnect.bat file contains examples of commands that can be configured, but no actual commands. Too add commands, scroll to the bottom of the file.
  4. To map a network drive, enter a command in the following format:
  5. net use drive-letter\\server\share password /user:Domain\name 
    

For example to if the drive letter is z, the server name is engineering, the share is docs, the password is 1234, the user's domain is eng and the username is admin, the command would be the following:

net use z\\engineering\docs 1234 /user:eng\admin 
  1. To disconnect a network drive, enter a command in the following format:
  2. net use drive-letter: /delete 
    

For example, to disconnect network drive z, enter the following command:

net use z: /delete 
  1. To map a network printer, enter a command in the following format:
  2. net use LPT1 \\ServerName\PrinterName /user:Domain\name 
    

For example, if the server name is engineering, the printer name is color-print1, the domain name is eng, and the username is admin, the command would be the following:

net use LPT1 \\engineering\color-print1 /user:eng\admin 
  1. To disconnect a network printer, enter a command in the following format:
  2. net use LPT1 /delete 
    
  3. To launch an application enter a command in the following format:
  4. C:\Path-to-Application\Application.exe 
    
  5. For example, to launch Microsoft Outlook, enter the following command:
  6. C:\Program Files\Microsoft Office\OFFICE11 
    
  7. To open a website in your default browser, enter a command in the following format:
  8. start http://www.website.com 
    
  9. To open a file on your computer, enter a command in the following format:
  10. C:\Path-to-file\myFile.doc 
    
  11. When you have finished editing the scripts, save the file and close it.

Disconnecting NetExtender

To disconnect NetExtender, perform the following steps:

  1. Right click on the NetExtender icon in the system tray to display the NetExtender icon menu.
  2. Click the Disconnect option.
  3. Wait several seconds. The NetExtender session disconnects.

You can also disconnect by double clicking on the NetExtender icon to open the NetExtender window and then clicking the Disconnect button.

Instruct NetExtender to Uninstall After Exit

To have NetExtender automatically uninstall when you exit your NetExtender session, right click on the NetExtender icon, select Uninstall After Exit, and click Yes.

Uninstalling NetExtender

The NetExtender utility is automatically installed on your computer. To remove NetExtender, click on Start > All Programs, click on SonicWALL SSL-VPN NetExtender, and then click on Uninstall.

Viewing NetExtender Information from the System Tray

The following sections describe the NetExtender information that can be displayed from the system tray, including connection details, the NetExtender log, and route information.

Displaying Connection Information

You can display connection information by mousing over the NetExtender icon in the system tray. You can also display this information by right clicking on the NetExtender icon and clicking on System Status.

Viewing the NetExtender Log

The NetExtender log contains details about session establishment, termination, and other events. To display the NetExtender log, right click on the NetExtender icon and click on Log and then View Log... in the system tray menu.The log is stored as the file NetExtender.dbg in the directory
C:\Program Files\SonicWALL\SSL-VPN\NetExtender.

To clear the contents of the NetExtender log, click on Log and then Clear Log in the system tray menu.

Displaying Route Information

To display the routes that NetExtender has installed on your system, right click on the NetExtender icon and click the Route Information option in the system tray menu. The system tray menu displays all installed routes and their associated subnet masks.


www.SonicWALL.com
SonicWALL, Inc.
http://www.sonicwall.com
1160 Bordeaux Drive
Sunnyvale, CA 94089-1209
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