Public bug reported:
I needed to connect to a Cisco VPN. I imported a pcf file, but after
that the VPN failed. After testing with the vpnc commandline client it
seems that the VPN concentrator is configured for 1DES and that vpnc
disables that by default (which is good).
The error from vpnc
------------------------------------------------
vpnc: peer selected (single) DES as "encryption" method.
This algorithm is considered too weak today
If your vpn concentrator admin still insists on using DES
use the "--enable-1des" option
------------------------------------------------
The setting as described in the manpage.
------------------------------------------------
--enable-1des
enables weak single DES encryption
conf-variable: Enable Single DES
------------------------------------------------
After setting the option to enable single DES the VPN worked.
Then I went to the network manager settings: VPN->Advanced->Encryption
Method and I changed it to 'Weak'. Then it VPN worked.
What I expect if I connect to a 1DES Cisco VPN with the default settings is:
- NetworkManager detects that the encryption method doesn't match and gives an
error like "Encryption method mismatch: Local=Strong Remote=Weak, Go to
advanced settings to change it" (Or a warning like "Remote VPN is configured
for weak encryption: Continue or Abort?")
** Affects: network-manager-vpnc (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1190886
Title:
VPN fails if remote uses DES
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