tun device

Hi,

I created a tunnel device using the kernel supported function tun_open.
Then I assigned an ip address to tun0 using ifconfig tun0 192.168.0.10.

I want to read now the plain ip packets, but how can I do this?
In my test program I have

while(1)
{
readn_t(fd_tun,buf,100,timeout); //read with timeout
printf("tun:%s\n",buf);
}

I never receive any data from the tun device.

Do I have to listen on the fd socket for incoming connects? Or How can I set
the tun device to accept every connect request?

when I do ssh 192.168.0.10 it says connection refused (Port 22).

regards,
Benjamin

Benjamin Menküc wrote:
> Hi,
>
> I created a tunnel device using the kernel supported function tun_open.
> Then I assigned an ip address to tun0 using ifconfig tun0 192.168.0.10.
>
> I want to read now the plain ip packets, but how can I do this?
> In my test program I have
>
> while(1)
> {
> readn_t(fd_tun,buf,100,timeout); //read with timeout
> printf("tun:%s\n",buf);
> }
>
> I never receive any data from the tun device.
>
> Do I have to listen on the fd socket for incoming connects? Or How can I set
> the tun device to accept every connect request?
>
> when I do ssh 192.168.0.10 it says connection refused (Port 22).
>

You have to route / port forward the incoming packets
to the network end of the tunnel device.

--

Tauno Voipio
tauno voipio (at) iki fi

Hi Tauno,

how do I do that?

route add something?

regards,
Benjamin