mol osX & net

[francesco]

Hi, i've configured mol to run osX 10.1.4...
I've configured the network with the sheep module...
i can ping and be ping'ed (in darwin) and i can telnet TO darwin...
but I CANNOT telnet, ftp... everything but ping, trace, DNS... FROM darwi=
n...

looking at tcpdump from darwin i see it can send packets, but do not rece=
ive=20
replyes....

looking at the tcpdump from linux i see those packets that cannot be deli=
vered=20
to osX... it seems linux to catch those packets as soon as they arrive...

hints?

thanks,
  francesco.