Start by configuring the network card that interfaces to the other computers on you network
# ifconfig ethX ip
where ethX is the network card and ip is your desired server ip address (Usually 192.168.0.1 is used)
Then configure the NAT as follows
# iptables -t nat -A POSTROUTING -o ethX -j MASQUERADE
where ethX is the network card that the Internet is coming from
# echo 1 > /proc/sys/net/ipv4/ip_forward
Install dnsmasq and ipmasq using the following command
# apt-get install dnsmasq ipmasq
Restart dnsmasq using the following command
# /etc/init.d/dnsmasq restart
Reconfigure ipmasq to start after networking has been started
# dpkg-reconfigure ipmasq
Start by configuring the network card that interfaces to the other computers on you network
# ifconfig ethX ip
where ethX is the network card and ip is your desired server ip address (Usually 192.168.0.1 is used)
Then configure the NAT as follows
# iptables -t nat -A POSTROUTING -o ethX -j MASQUERADE
where ethX is the network card that the Internet is coming from
# echo 1 > /proc/sys/net/ipv4/ip_forward
Add the line “net.ipv4.ip_forward = 1″ to /etc/sysctl.conf
# gedit /etc/sysctl.conf
Reboot your system is optional.
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