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  • tun0 available for VirtualBox client?

    From Markus Robert Kessler@2:250/1 to All on Sun Jun 13 16:36:57 2021
    Hi all,

    first: reason for asking this here is, that the behaviour of VirtualBox
    seems to heavily depend on the target for which this is packaged.

    I have to set the parameters of VirtualBox in the way that (vpnc) tun0 is available for the client OS which is booted from VirtualBox.
    Unfortunately, none of the tricks from stackoverflow etc., like "activate
    IP forwarding" and so on, worked.

    Any idea how to get this to work?

    Thanks for any hint!

    Best regards,

    Markus

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  • From David W. Hodgins@2:250/1 to All on Sun Jun 13 19:11:53 2021
    On Sun, 13 Jun 2021 11:36:57 -0400, Markus Robert Kessler <[email protected]> wrote:

    Hi all,

    first: reason for asking this here is, that the behaviour of VirtualBox
    seems to heavily depend on the target for which this is packaged.

    I have to set the parameters of VirtualBox in the way that (vpnc) tun0 is available for the client OS which is booted from VirtualBox.
    Unfortunately, none of the tricks from stackoverflow etc., like "activate
    IP forwarding" and so on, worked.

    Any idea how to get this to work?

    I suspect, with vpnc running on the host that the vbox guest network will have to use bridged networking to see the tun0 network interface. I've never tried it
    though, and have very limited experience with using a vpn.

    Regards, Dave Hodgins

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  • From Markus Robert Kessler@2:250/1 to All on Tue Jun 15 23:26:42 2021
    On Sun, 13 Jun 2021 14:11:53 -0400 David W. Hodgins wrote:

    On Sun, 13 Jun 2021 11:36:57 -0400, Markus Robert Kessler <[email protected]> wrote:

    Hi all,

    first: reason for asking this here is, that the behaviour of VirtualBox
    seems to heavily depend on the target for which this is packaged.

    I have to set the parameters of VirtualBox in the way that (vpnc) tun0
    is available for the client OS which is booted from VirtualBox.
    Unfortunately, none of the tricks from stackoverflow etc., like
    "activate IP forwarding" and so on, worked.

    Any idea how to get this to work?

    I suspect, with vpnc running on the host that the vbox guest network
    will have to use bridged networking to see the tun0 network interface.
    I've never tried it though, and have very limited experience with using
    a vpn.

    Hi Dave, thanks for answering.

    Well, using bridged mode, I was fully surprised to NOT see tun0 in the
    list of interfaces, just eth0 ("enps..."). There was no working route
    through the VPN tunnel.

    But, finally I selected NAT-mode for the client, established a VPNC
    connection on the host machine (mga7-x64) and the remote target was
    reachable.

    I still don't know, why, but it works...

    Thanks again,
    best regards,

    Markus

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    Please reply to group only.
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