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VPN via L2TP, error 768

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  • VPN via L2TP, error 768


    I configured VPN server on my windows 2k3 machine and after installing certificate's on both server and client machine i got this error (VPN Error 768 - The connection attempt failed because of failure to encrypt data ). I also mention that when i tried to setup connection using pre-shared key i got similiar errror. Any idea what can i do with it ?

    Thanks in advance for any help.

  • #2
    Re: VPN via L2TP, error 768

    did you set up the VPN connection in windows?

    there are several areas of the VPN settings that need to be checked out.

    go to network connections and right click on the VPN connection icon. go to the security tab and select "advanced."

    from the drop down, select "optional encryption" this will allow it to connect without encryption. you can fix that later...

    and the MSCHAP version... i will assume your using 2, but you can check the other boxes as needed.

    now try the VPN connection.

    does it give the same error?
    its easier to beg forgiveness than ask permission.
    Give karma where karma is due...


    • #3
      Re: VPN via L2TP, error 768

      i did this and encounter another error:

      Error: 789 "The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer"

      Another question is do i have to open other ports on firewall for L2TP connection than for PPTP ?