Simple VPN with go-libp2p-vpn

This is an example that quickly shows how to use the go-libp2p-vpn stack.

The app will start a local TUN interface and wait for a connection to the peer on the /vpn/tun/1.0.0 protocol.

After connecting, the VPN is fully established.

Build

From the libp2p-vpn directory run the following:

> cd libp2p-vpn
> go build

First create two private keys, it will print the respective peer IDs:

> ./libp2p-vpn keygen -f peer1
peer ID: Qm..Ana
> ./libp2p-vpn keygen -f peer2
peer ID: Qm..Bob

On Mac, in a terminal do:

> sudo ./libp2p-vpn run -f peer1 -l /ip4/127.0.0.1/tcp/10000 -p /ip4/127.0.0.1/tcp/10001/p2p/Qm..Bob -t 10.0.0.1,10.0.0.2

then from another terminal:

> sudo ./libp2p-vpn run -f peer2 -l /ip4/127.0.0.1/tcp/10001 -p /ip4/127.0.0.1/tcp/10000/p2p/Qm..Ana -t 10.0.0.2,10.0.0.1