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Error and Self Diagnoses

Tuesday, 01 March 2011

Open Virtual Network Device Error!

Basic knowledge: Each VPN-X program should use one virtual network device (named “vpn-x”) with administrator role.

vpnx_advanced_18

Ask yourself following questions before report us this is a bug:

  • Are you the administrator user or user with administrator/root role on this platform/OS?

    Tips: Windows Vista (or above, such as Windows 7)
    user should use administrator role to run VPN-X (just click the right button on the VPN-X shortcut link, and you will see the menu).

    Mac OS X users should not care about it, because VPN-X can help you to detect the user role.

    Linux users should use command “sudo” or root role to launch the VPN-X server or client.
  • Do you have enough virtual devices for each VPN-X program?

    Windows users: By default, VPN-X Windows installer will help you install a virtual network device on Windows.

  • Mac OS X users:
    Please refer to “Understand VPN-X” section.

    Linux users:
  • Please refer to “Understand VPN-X” section


VPN-X client always reports “Can't connect to VPN-X server, and report time out error!

There are two methods to check whether your VPN-X server is on the Internet, or can be accessed by client

  • Method 1: Using Telnet to check Please run the following command from a remote machine (Please don't run this command in the same network of VPN-X server. You should run it at another place or network ):

    telnet <your vpn-x server public/internet IP> 25000

    You can find the public IP from the VPN-X server status panel or visit this page http://checkip.dyndns.com from VPN-X server machine.

    For example:
    telnet 74.125.127.100 25000

    If you got a response from the VPN server side, then you can access your VPN-X from anywhere. In other words, your VPN-X server is on the Internet.

    This method can’t detect UDP protocol. If you want to check UDP, please use method 2

  • Method 2: Using VPN-X client to check the network status

    Input public IP of VPN-X and port, corresponding protocol, and random user name and password.

    You can find the public IP from VPN-X server status panel or visit this page http://checkip.dyndns.com from VPN-X server machine.

    By default:

    Port 25000, the protocol can be UDP or TCP
    Port 25443, the protocol should be TCP(TLS/SSL)


    After filling in all of these with a random password and user name, please click the login button. If you receive a password or user name error dialog, congratulations! Your VPN-X server is on the Internet/public. You can use the correct user name and password to login. If you receive a timeout error dialog, the VPN-X server is not on the Internet/public.
Last Updated Friday, 11 March 2011
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