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vpnhood / VpnHood

Undetectable Fast Portable VPN
GNU Lesser General Public License v2.1
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Split Tunneling by Apps & Countries #159

Closed ErcinDedeoglu closed 1 year ago

ErcinDedeoglu commented 1 year ago

Hello, I'm looking for this feature which is mentioned in README: Split Tunneling by Apps & Countries

But when I checked the Windows Client, it doesn't have this option. (by Apps) I am looking for the same option as ProxyCap app is doing.

I appreciate any help you can provide.

bobvhood commented 1 year ago

Hi, App filtering is impossible in windows, and you can see this feature on Android Devices. If you find any packet filtering on windows that support App, please share it with us :)

ErcinDedeoglu commented 1 year ago

Hi @bobvhood, I appreciate your fast reply. I checked lots of examples and tried reverse engineer some of them. The most famous is Proxifier and ProxyCap, which are doing App level redirection.

As I understand, Proxifier is doing DLL injection to change communication during the advantage of Ws2_32.dll. I tried this and working well on my cases. But the critical side is it's doing DLL injection and memory editing of remote processes. This means Windows Memory Integrity and other antivirus software can be recognized as malware. And also can face other problems like "anti-debugger".

But ProxyCap has a different approach, and it's working great. Which technique are they using? Do you have an idea?

b14aa178 commented 1 year ago

ProxyCap and Proxifier etc use something like NetfilterSDK