Hi Olli,

Olli wrote:
[...]
> I had a big problem. I was not able to try points 1,2,4 because
> tcpdump does not go to the background. I tryed to use a second
> terminal but I didn't know how to get (under Linux: ALT + F1,F2, ...).

What's the exact error message? My tcpdump runs fine in the background:

tcpdump ... > tcpdump.out &

  Guenther