It is impossible to prevent a program from leaking the internal IP address, if the program has been designed to do so. It is not possible even in theory. Any program installed on a PC, Mac, Android and probably also iOS can obtain the internal IP address from the operating system, encrypt it and send it to wherever it would be sending it.
One way to work around the leaking would be to use private addresses in the home network by setting up a NAT on the home router. This way the programs still would be able to get the local IP address of the computer. But since it is a private IP address and not the one provided for example by the ISP, it is not routed on the Internet as it is used only in private networks. The device would not be able to get the real IP address from the router and leak that.
Web browsers should be configured to prevent them from leaking the internal IP address to any web site that happens to request it. Instructions can be found here: https://community.f-secure.com/t5/F-Secure/Can-Freedome-block-WebRTC-IP/ta-p/77583.
Your help is appreciated!
Reading your reply has really made me feel nervous. I didn't know that apps are so easily able to leak my real IP address even if I'm running FreedomE VPN.
Would "Exiting" apps like Dropbox, Skype and Evernote 5minutes before I "Turn on" the FreedomE VPN app prevent them from leaking my real IP address?
We really do not know how those apps work and what information they may submit to their servers and under what conditions.
Laksh, your reply is much appreciated!
This is still a problem I haven't been able to solve.
Currently, it takes me a long time to prepare to start using FreedomE VPN as I need to manually "exit" my apps like Dropbox, Evernote and so on.
Is there a way I can do this faster?
I have my Freedome at home on autostart.
I can't be 100% sure but it seems that it starts really early. Way before my Steam Client, Chat Programms etc...
If the problematic programm have a windows service. Maybe try the delayed start option in the services dialog of windows.
Good question, I was thinking somethng similar. I would try auto-starting and auto-connecting Freedome at start. Also consider going into the Windows Task Manager and delaying the start-up of Dropbox, one drive and any other app you want to start after hopefully the VPN is connected.
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