Re: [Openvpn-devel] understanding of tun and vpn

2013-06-04 Thread Davide Brini
On Tue, 4 Jun 2013 12:15:30 +0200, wen lui wrote: > let me explain my understanding on tun/tap >[snip] Sorry, but what does all this have to do with OpenVPN development? -- D.

[Openvpn-devel] understanding of tun and vpn

2013-06-04 Thread wen lui
let me explain my understanding on tun/tap tun device is related to a file descriptor fd : fd=open("/dev/net/tun",O_RDWR) when I write to this fd, write(fd, packet,..) tun device deliver this packet to kernel TCP/IP stack when kernel TCP/IP stack send a packet to tun device I can read from the f