network-manager-vpnc doesn't work with networks using NULL encryption

[Ali Sabil]

Binary package hint: network-manager-vpnc

Network Manager fails to connect to a network using the NULL cipher while using the command line vpnc client works correctly using:
vpnc --enable-no-encryption

NetworkManager should ask the user to confirm if he agrees on using the NULL cipher (and also allow remembering the choice) for the network being used and if the user agrees tries to connect again using the --enable-no-encryption flag.

[Ali Sabil (asabil)]

The attached patch fixes the problem in a very trivial manner (note that this is the same behavior as cisco-vpnclient)

[Mathieu Trudel-Lapierre (cyphermox)]

I've also looked at this issue and wrote a patch that adds an option in the configuration window for the VPN connection to enable/disable allowing null encryption. It also obviously works for exporting to pcf (as a X-NM flag, though) and importing. I couldn't test it on an actual vpn tunnel though, but maybe this week I will be able to. I'm very confident it would work since the options are in the vpnc documentation.

The attached patches fixes the problem by adding a checkbox in the configuration dialog and activating the required parameters when the call is passed to vpnc. I'm sorry for the format, it's the copy that would go as patch 04 in cdbs -- means you also need to have the other ubuntu patches applied.

[Mathieu Trudel-Lapierre (cyphermox)]

It seems that the patch I had previously submitted was missing a part. This new attachment addresses the issue.

I'll try to generate a debdiff tonight if I have a chance, or tomorrow.

[Ali Sabil (asabil)]

The patch works perfectly now, I have been using it for over a week without any glitch.

[Mathieu Trudel-Lapierre (cyphermox)]

The attached debdiff should fix the issue, as mentioned before, by adding an option to allow null encryption from the vpn configuration dialog. The patch has also been submitted upstream (bug #507530).

[Luca Falavigna (dktrkranz)]

For your reference: http://bugzilla.gnome.org/show_bug.cgi?id=507530.

[Launchpad Janitor (janitor)]

This bug was fixed in the package network-manager-vpnc - 0.6.4svn2422-0ubuntu5

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network-manager-vpnc (0.6.4svn2422-0ubuntu5) hardy; urgency=low

  * Add use NULL encryption option (LP: #148468)

 -- Mathieu Trudel <email address hidden> Thu, 17 Jan 2008 18:50:48 -0500