> You could check if IP-forwaring is enables on node 12: > "cat /proc/sys/net/ipv4/ip_forward" > > If the answer is "0" you enable IP-forwarding with: > "echo 1 > /proc/sys/net/ipv4/ip_forward" i had already checked that, and it's ok. I'm afraid it's a iptables problem. i'm gonna check my rules Thanx for your help. Thomas