Internal routing

[Kevin Cheng]

Hi,   I have a problem regrading the debian linux (kernel 2.3) internal routing. I have 2 NICs installed on my machine, one to the local LAN and the other one to the internet. I should have all the things setup correctly, like ipconfig and route... I can ping the outside world and the local LAN computers from my machine while I can also ping the 2 NICs' IP in my machine from the local LAN's  computers. The strange thing is that I CANNOT ping the outside world from the local network. I have already ensure the ipforwarding is on. (set to 1)    I have no clue on this. Could anyone help me out on this? Thanx a lot.     Kevin