That
entails the following:
Creating the floppy??”You??™ll need a computer with a floppy drive to which you can
write raw data. That machine should be running Linux (KNOPPIX should work fine if
you don??™t have a Linux already installed).
Running the firewall??”For this, you want a computer that can boot from a floppy disk
and have two network interfaces. That computer can have as little power as a discarded
486 machine. In the example, the firewall computer will have a dial-up modem to connect
to the Internet and an Ethernet card to connect it to your LAN (although a better
and simpler way is to have an Ethernet connection to the Internet that can basically turn
on automatically in most cases).
And, of course, you need a floppy disk.
The computer with which you create the floppy disk and the computer on which you run it may
be the same computer (but doesn??™t have to be).
You need to know the Linux driver name for your Ethernet cards before you run the procedure
to create your firewall floppy. If you don??™t know what it is, I recommend starting
KNOPPIX on your machine and then using the lsmod and lspci commands to determine the driver
names for your Ethernet cards (they should have been autodetected). Use modinfo if you are not
sure if the driver name is the right one (for example, modinfo 8139too).
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