问题
I'm developing sort of VPN application and need virtual network interface (aka TUN/TAP). Is there any such driver available for windows ?
The only one I know of is OpenVPN, but it is GPLed and thus AFAIK can't be used in closed-source app.
If there's no ready solution, I'd appreciate some estimation on how complicated is it to code such beast myself (and possibly some direction on where to start).
I found this similar question, but it dated back 2008.
回答1:
Found this one: wodVPN - claims to come with a virtual network adapter.
回答2:
Try AnyTun. http://www.anytun.org/
It looks like a solid tunnel driver available both on Linux and Windows, and claims to be freely redistributable.
If you do not find it to work, or something like it, I would agree with your first commenter - get a quick session with a lawyer to review the legal contract for the one you found... or even better, just call their sales department - they may say yes without legal worries.
Building the beast, as you say, is likely to be a pain. I've not done it, so I can't give a solid estimate, but it seems wise to avoid.
来源：https://stackoverflow.com/questions/8525577/virtual-network-interface-for-windows