Here's the situation (it's pretty common) :
We've got an intranet at home, and one PC which is running Linux (of course :-) and which has two network cards : one connected to a cable modem, one connected to the hub of our intranet. There is no problem with the connection to the internet, this all works fine, but I can't seem to ping to or from the PC with 2 cards to/from any other PC in the network.
The idea of course is to do IP masquerading, but that's not the question here. Question is : From my gateway PC, why can I ping to any Internet address, but not to any of the intranet computers ? Do I have to install a route daemon (if so, how ?) or is there another problem ?
The hardware all works fine, 'cause in Windows I can ping any address on the Internet as well as on the intranet.
FYI : When I ping, I get the message 'Destination host unreachable' and when I telnet from the gateway to another intranet-PC, it says 'No route to host'.
I hope someone can help me as it is pretty urgent.