Apparently sometimes Viscosity disables the option to save credentials into Keychain and even reinstalling the application does not bring it back.
What is the trick to re-enable them?
How to enable option to save credentials in Viscosity VPN
Networkvpn
Related Solutions
It should not be necessary to "uninstall", "unload", or "quit" Tunnelblick to make your issue go away.
In some situations, where the OpenVPN configuration itself is faulty (and it sounds like yours is), you might need to have Tunnelblick "Reset the primary interface after disconnecting". You can do that by selecting the configuration(s) you wish to modify in Tunnelblick's "VPN Details…" window, then clicking the "Advanced" button and putting a check in the corresponding checkbox.
For further Tunnelblick support, you should use the Tunnelblick Discussion Group at
https://groups.google.com/forum/#!forum/tunnelblick-discuss
Before you post to that group, please read
After some extensive testing the only solution I got to work is a VM setup.
- Setup the NordVPN GUI client or Tunnelblick and connect to the Swedish VPN-server (preferably with an openvpn connection). Often VPN-providers use a NAT firewall - which means you are first connected to an internal network. You can get the network with
ifconfig. In your above example that's a 10.0.0.0/8 network (10.250.250.88 --> 10.250.250.1 netmask 0xff000000). Check that all network traffic is sent to the VPN provider. - Download and install a type-2 hypervisor like VirtualBox or Parallels Desktop
Set up the NAT network of the hypervisor with different network settings than the internal network of the VPN provider, your own network and your school's network.
Examples:
Parallels:
VirtualBox:
Possible networks may be private networks in 172.16.0.0/12 (e.g. 172.18.8.0/24)
- Create a new VM hull and attach it to this NAT network.
- Install a familiar OS (e.g OS X 10.9-10.11) in this VM
- Set up a VPN connection in the VM to your school's VPN server in Sweden in the VPN in System Preferences -> Network, shut down the VM and quit the hypervisor.
- Connect to NordVPN in the non-virtualized OS
- Start the VM
- Connect to the school's VPN server in the virtualized OS
tested with a Parallels VM (OS X 10.11) and a private VPN server (Cisco IPSec) and an iMac (OS X 10.9) and VyprVPN (OpenVPN)
Best Answer
While Viscosity support refused to answer the question and stated that reinstallation is needed, I was able to find this trick after a bit of digging: