internet connection sharing between two computers using crossover cable

farnell_mark · 06-04-2005, 05:14 PM

I have two computers installed with Debian Sarge. The first computer has two ethernet ports and one of the port is connected to an ADSL modem. The other ethernet port of the first computer is connected to the second computer via a crossover ethernet cable. The first computer can have access to the internet but not the second computer.

In Debian Sarge, how should I set both computer up so that the second computer can share the internet access as well as the printer service of the first computer? (the first computer is connected to a printer via the USB port, has both CUPS server and client installed and can print successfully)

Thanks!

Mark

acid_kewpie · 06-04-2005, 05:44 PM

you essentially need to enable ipforwarding. personally i would suggest using a firewall configuration tool todo this for you, such as firestarter. you can also do it yourself with just a couple of lines, which i *think* are:

Code:

echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE