Making a Linux box as Simple router and Firewall

 Scenario:1 One Linux Box as a firewall having 2 Lan cards or 1 lan card and one internet modem connection.2. eth0 –> Connected to Broadband. IP is 192.168.1.2  in case of dialup it can be “ppp0”3. eth1 –> Connected to Local LAN IP is 192.168.2.1Note: In case of broadband your default gateway should be IP…