[Linphone-users] Windows Linphone, VPN and Zfone

[Dr. C.E. Frieler]

I have a dream of being able to communicate securely using the components  
listed in the subject.
But I am having a bear of a time getting it to work. Everything was  
working between the two target laptops with Windows Linphone and Zfone  
while I was on a single LAN, even with the VPN active.
  Now that we are on different NAT'd subnets, I realize it was only  
working because it was bypassing the VPN. I need to understand how to  
configure the connections to use the VPN channel.

I uninstalled Zfone to reduce the complexity and set "hosts" entries and  
SIP identities on both systems to the best of my understanding. No Joy.....

Is there a "HowTo" somewhere that covers this?
Is there anyone that has gotten Linphone to work through a VPN?
If so, could you detail the steps? If the steps are for Linux, can someone  
map them onto the Windows interface and configuration options?

Thanks for the help, Cliff