This section explains how to install Debian GNU/Linux on a computer without an Ethernet card, but with just a remote gateway computer attached via a Null-Modem cable (also called Null-Printer cable). The gateway computer should be connected to a network that has a Debian mirror on it (e.g. to the Internet).
In the example in this appendix we will set up a PLIP connection using a gateway connected to the Internet over a dial-up connection (ppp0). We will use IP addresses 192.168.0.1 and 192.168.0.2 for the PLIP interfaces on the target system and the source system respectively (these addresses should be unused within your network address space).
The PLIP connection set up during the installation will also be available after the reboot into the installed system (see Kabanata 7, Booting Into Your New Debian System).
Before you start, you will need to check the BIOS configuration (IO base address and IRQ) for the parallel ports of both the source and target systems. The most common values are
A target computer, called target, where Debian will be installed.
System installation media; see Bahagi 2.4, “Installation Media”.
Another computer connected to the Internet, called source, that will function as the gateway.
A DB-25 Null-Modem cable. See the PLIP-Install-HOWTO for more information on this cable and instructions how to make your own.
The following shell script is a simple example of how to configure the source computer as a gateway to the Internet using ppp0.
#!/bin/sh # We remove running modules from kernel to avoid conflicts and to # reconfigure them manually. modprobe -r lp parport_pc modprobe parport_pc io=
7modprobe plip # Configure the plip interface (plip0 for me, see dmesg | grep plip) ifconfig
192.168.0.1netmask 255.255.255.255 up # Configure gateway modprobe iptable_nat iptables -t nat -A POSTROUTING -o
ppp0-j MASQUERADE echo 1 > /proc/sys/net/ipv4/ip_forward
Boot the installation media. The installation needs to be run in expert mode; enter
expert at the boot prompt. If you need to set parameters for kernel modules, you also need to do this at the boot prompt. For example, to boot the installer and set values for the “io” and “irq” options for the parport_pc module, enter the following at the boot prompt:
Below are the answers that should be given during various stages of the installation.
plip-modules option from the list; this will make the PLIP drivers available to the installation system.
If target does have a network card, a list of driver modules for detected cards will be shown. If you want to force
debian-installer to use plip instead, you have to deselect all listed driver modules. Obviously, if target doesn't have a network card, the installer will not show this list.
Because no network card was detected/selected earlier, the installer will ask you to select a network driver module from a list. Select the
Auto-configure network with DHCP: No
Name server addresses: you can enter the same addresses used on source (see