Build your own VPN app

Or use VpnHood's parts in any .NET application. It is open source, and every part is a NuGet package.

Build your VPN app Browse the libraries

Build your VPN app

Start from the template: a repository that holds only your app, for Android, iOS, Windows and Linux. A Debug build connects to our sample server.

VpnHood Client Architecture

A head over three layers, the UI, the app's logic and the VPN engine, which meet at two contracts. Replace any layer on its own.

using var adapter = new WinTunVpnAdapter(new WinVpnAdapterSettings {
    AdapterName = "MyVpn",
    Blocking = false
});
adapter.PacketReceived += (_, ipPacket) => {
    Console.WriteLine($"{ipPacket.SourceAddress} -> {ipPacket.DestinationAddress}, {ipPacket.Protocol}");
    ipPacket.Dispose();
};
await adapter.Start(new VpnAdapterOptions {
    SessionName = "My VPN",
    VirtualIpNetworkV4 = IpNetwork.Parse("10.255.0.2/24"),
    IncludeNetworks = IpNetwork.All
}, cancellationToken);

Use the networking libraries

Open a TUN adapter and handle its packets in a few lines; the Linux, Android and iOS adapters take the same calls. IP packets, a user-space TCP stack, QUIC and proxies too, for any .NET application.

Use any part of VpnHood

Four layers of NuGet packages, from networking libraries that need no VPN to the screens of a finished app. Each part's page says what you can build with it.

NetworkingStandalone .NET libraries for the network layer a VPN is built on.

VPN CoreThe VPN itself: the client and server engines, the tunnel between them, and the parts that decide where traffic goes and who may connect.

App LogicEverything a VPN app does below its screens, the same on every platform.

App UIThe app's screens and the hosts that run them, from a phone to a desktop service.

Looking for a type? Search at the top of the page, or open the API reference. The source is on GitHub, and every package is on NuGet.