> It mean your packet traversed the prerouting nat eth1, and so on. > > I would put 3 log messages, at "prerouting nat eth1", "forward", and > "postrouting nat". If your packet is seen at postrouting then it should be > successfully forwarded. > > I noticed that your packet's outbound interface is ppp0. However, I recall > your > MASQUERADE rule had "--out-interface eth0". Perhaps this is the cause and > your > packet is not masqueraded? Try a simple "iptables -A POSTROUTING -t nat -j > MASQUERADE" without qualifiers. > > Other things to try. Use ethereal to sniff eth1, and eth0/ppp0. Is there > traffic? > > Chinh > Hi Chinh, thank you very much again, I'll try your suggestions tonight.